* [PATCH v12 00/20] Automatic Disk Unlock with TPM2
@ 2024-04-19 8:30 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 01/20] posix_wrap: tweaks in preparation for libtasn1 Gary Lin via Grub-devel
` (19 more replies)
0 siblings, 20 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
GIT repo for v12: https://github.com/lcp/grub2/tree/tpm2-unlock-v12
This patch series is based on "Automatic TPM Disk Unlock"(*1) posted by
Hernan Gatta to introduce the key protector framework and TPM2 stack
to GRUB2, and this could be a useful feature for the systems to
implement full disk encryption.
To support TPM 2.0 Key File format(*2), patch 1~5,7 are grabbed from
Daniel Axtens's "appended signature secure boot support" (*3) to import
libtasn1 into grub2. Besides, the libtasn1 version is upgraded to
4.19.0 instead of 4.16.0 in the original patch.
Patch 6 fixes a potential buffer overrun in libtasn1.
(https://gitlab.com/gnutls/libtasn1/-/issues/49)
Patch 8 adds the document for libtasn1 and the steps to upgrade the
library.
Patch 9~13 are Hernan Gatta's patches with the follow-up fixes and
improvements:
- Converting 8 spaces into 1 tab
- Merging the minor build fix from Michael Chang
- Replacing "lu" with "PRIuGRUB_SIZE" for grub_dprintf
- Adding "enable = efi" to the tpm2 module in grub-core/Makefile.core.def
- Rebasing "cryptodisk: Support key protectors" to the git master
- Removing the measurement on the sealed key
- Based on the patch from Olaf Kirch <OKir@suse.com>
- Adjusting the input parameters of TPM2_EvictControl to match the order
in "TCG TPM2 Part3 Commands"
- Declaring the input arguments of TPM2 functions as const
- Resending TPM2 commands on TPM_RC_RETRY
- Adding checks for the parameters of TPM2 commands
- Packing the missing authorization command for TPM2_PCR_Read
- Tweaking the TPM2 command functions to allow some parameters to be
NULL so that we don't have to declare empty variables
- Only enabling grub-protect for "efi" since the TPM2 stack currently
relies on the EFI TCG2 protocol to send TPM2 commands
- Using grub_cpu_to_be*() in the TPM2 stack instead of grub_swap_bytes*()
which may cause problems in big-indian machines
- Changing the short name of "--protector" of "cryptomount" from "-k" to
"-P" to avoid the conflict with "--key-file"
- Supporting TPM 2.0 Key File Format besides the raw sealed key
- Adding the external libtasn1 dependency to grub-protect to write the
TPM 2.0 Key files
- Extending the TPM2 TSS stack to support authorized policy
Patch 14 implements the authorized policy support.
Patch 15 implements the missing NV index mode. (Thanks to Patrick Colp)
Patch 16 improves the 'cryptomount' command to fall back to the
passphrase mode when the key protector fails to unlock the encrypted
partition. (Another patch from Patrick Colp)
Patch 17 and 18 fix the potential security issues spotted by Fabian Vogt.
Patch 19 and 20 implement the TPM key unsealing testcases.
To utilize the TPM2 key protector to unlock the encrypted partition
(sdb1), here are the sample steps:
1. Add an extra random key for LUKS (luks-key)
$ dd if=/dev/urandom of=luks-key bs=1 count=32
$ sudo cryptsetup luksAddKey /dev/sdb1 luks-key --pbkdf=pbkdf2
2. Seal the key
$ sudo grub-protect --action=add \
--protector=tpm2 \
--tpm2key \
--tpm2-keyfile=luks-key \
--tpm2-outfile=/boot/efi/boot/grub2/sealed.tpm
3. Unseal the key with the proper commands in grub.cfg:
tpm2_key_protector_init --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
cryptomount -u <SDB1_UUID> -P tpm2
(*1) https://lists.gnu.org/archive/html/grub-devel/2022-02/msg00006.html
(*2) https://www.hansenpartnership.com/draft-bottomley-tpm2-keys.html
(*3) https://lists.gnu.org/archive/html/grub-devel/2021-06/msg00044.html
v12:
- Fixing typos and indentation
- Removing the unused TPM commands: TPM2_HashSequenceStart,
TPM2_SequenceUpdate, and TPM2_SequenceComplete,
- Following the TCG EK templates to set the parameters of SRK
- Removing ECC_BN_P256 and ECC_BN_P638 from the SRK algorithm list since
those two algorithms are not mentioned in the TCG EK templates
- Updating the help messages of the tpm2 module and grub-protect
- Removing the unnecessary NULL checks
- Adding the manpage for grub-protect
- Replacing grub_crypto_hash() with TPM2_Hash() in grub-protect to
support SHA384 PCR banks
- Using 'swtpm chardev' to start swtpm instead of 'swtpm_cuse' since
some distros may not build swtpm with cuse
- Adding a new testcase without specifying the SRK type to test the
default SRK settings
- Amending tpm2_test to remove the duplicate error checking code
- Silencing the tpm2-tools commands in tpm2_test
- Fixing the exit trap of tpm2_test to removing the working directory
on success
v11:
- https://lists.gnu.org/archive/html/grub-devel/2024-04/msg00052.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v11
- Adding the missing default: handlers in grub-core/tpm2/mu.c
- Updating the help messages and commit messages to reflect the change
of the default SRK algorithm (RSA2048 -> ECC_NIST_P256)
- Adding the testcase for the NV index mode
v10:
- https://lists.gnu.org/archive/html/grub-devel/2024-04/msg00019.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v10
- Fixing the coverity issues: CID 435775, CID 435771, CID 435770, CID
435769, CID 435767, CID 435761
https://lists.gnu.org/archive/html/grub-devel/2024-02/txtKIuUb5lf3O.txt
- Fixing the potential memory leak (CID 435775)
- Removing the unnecessary grub_protect_get_grub_drive_for_file() from
util/grub-protect.c (CID 435771)
- Using the grub_tpm2_mu_TPM2B_*_Unmarshal functions to unmarshal the
TPM2B structs instead of a generic grub_tpm2_mu_TPM2B_Unmarshal
(CID 435770)
- Fixing Null pointer dereference (CID 435769)
- Adding bound checks to grub_tpm2_mu_TPML_DIGEST_Unmarshal()
(CID 435767)
- Improving the check for the return value of ftell() (CID 435761)
- Adding a quick fix for CID 435762
- Removing the empty ending line in tests/asn1_test.in
- Fixing docs/grub-dev.texi and updating the libtasn1 patches in
grub-core/lib/libtasn1-patches/
- Merging all the TPM2 TSS stack patches into one to reduce the total
patch number
- Switching the default asymmetric algorithm from RSA2048 to
TPM_ECC_NIST_P256 for the faster key generation
- Adding the fallback SRK templates to try a few more SRK types in case
grub2 failed to associate the sealed key with the SRK in the persistent
handle or the default SRK
- Improving the test script to add tests for the persistent handle and
the fallback SRKs
v9:
- https://lists.gnu.org/archive/html/grub-devel/2024-02/msg00007.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v9
- Introducing c-ctype.h to posix_wrap and implementing strncat
- Adding the descriptive comments to the disabled code in libtasn1
- Replacing strcat with the bound-checked _asn1_str_cat in libtasn1 and
including c-ctype.h directly
- Integrating the asn1 testcases into "functional_test"
- Updating the libtasn1 patches mentioned in the documentation
- Moving the key protector to a module
- Amending configure.ac to enable/disable grub-protect
- Fixing an timeout issue in the tpm2_test script by feeding the config
through stdin
v8:
- https://lists.gnu.org/archive/html/grub-devel/2024-01/msg00013.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v8
- Introducing TPM device support to grub-emu and adding the TPM key
unsealing testcase
v7:
- https://lists.gnu.org/archive/html/grub-devel/2023-11/msg00127.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v7
- Stopping reading SRK from the well-known persistent handle (TPM2_SRK_HANDLE,
i.e. 0x81000001) by default since the persistent handle may be created
by other OS and causes unsealing failure due to SRK mismatching
- The user now has to specify the persistent handle with "--srk"
explicitly.
- Utilizing grub_error() to print more error messages
- Unifying the format of the error messages from TPM2 commands
v6:
- https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00026.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v6
- Supporting more SRK types than RSA2048 and ECC_NIST_P256
- Documenting SHA512 as the supported PCR bank type in the tpm2
protector
- Removing the redundant error message for grub_tpm2_protector_srk_get()
since it may overwrite the real error message.
- Updating the supported SRK types and PCR bank types in grub-protect
- Removing the unused type: TPM2_ECC_CURVE
v5:
- https://lists.gnu.org/archive/html/grub-devel/2023-08/msg00113.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v5
- Rebasing to the latest git HEAD and improving the commit messages
- Implementing authorized poilcy support
- Implementing NV index mode
- Improving the 'cryptomount' command to fall back to the passphrase
mode when the key protector fails to unlock the encrypted partition
- Fixing the potential security issues
v4:
- https://lists.gnu.org/archive/html/grub-devel/2023-04/msg00104.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v4
- Improving the error condition checks in cryptodisk.c
- Moving the code to unseal with the standalone policy sequence below
the code for authpolicy sequence
- The standalone policy sequence was mistakenly prepended to to the
authpolicy sequence with grub_list_push() while it should be
appended.
- Pushing the error messages from the authpolicy sequence into the
grub_error stack so that we can list all errors from the sequence
- Improving the error messages in the TPM2 protector
- Amending the calculation of the max string lengths of 'Policy',
'CommandCode' and 'CommandPolicy'
- Skipping the error path in grub_tpm2key_get_authpolicy_seq() on
success to avoid freeing the authpolicy sequence
v3:
- https://lists.gnu.org/archive/html/grub-devel/2023-04/msg00055.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v3
- Adding the document for libtasn1
- Improving the error condition checks
ex: "if (!ptr)" ==> "if (ptr == NULL)"
"if (err)" ==> "if (err != GRUB_ERR_NONE)"
"if (rc)" ==> "if (rc != TPM_RC_SUCCESS)"
- Supporting the "TPMPolicy" and "TPMAuthPolicy" sequence in the TPM 2.0
key File
- Refactoring the key recover function to support "TPMPolicy" and
"TPMAuthPolicy" sequence
- Using TPMS_PCR_SELECTION_SelectPCR() to set the PCR bit mask
- Also dropping TPM2_PCR_TO_SELECT() and TPM2_PCR_TO_BIT() which are
not necessary anymore
- Removing the redundant variable, 'crd', from
grub_cryptodisk_scan_device_real()
- Fixing the spaces/tabs in cryptodisk.c
- Fixing the comment format in cryptodisk.h
- Adding the defensive check for "cargs->protectors" in
grub_cryptodisk_scan_device()
- Improving 'grub-protect' for the better support of TPM 2.0 Key File
- Adding more comments
v2:
- https://lists.gnu.org/archive/html/grub-devel/2023-03/msg00094.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock-v2
v1:
- https://lists.gnu.org/archive/html/grub-devel/2023-02/msg00130.html
- GIT repo: https://github.com/lcp/grub2/tree/tpm2-unlock
Daniel Axtens (6):
posix_wrap: tweaks in preparation for libtasn1
libtasn1: import libtasn1-4.19.0
libtasn1: disable code not needed in grub
libtasn1: changes for grub compatibility
libtasn1: compile into asn1 module
asn1_test: test module for libtasn1
Gary Lin (7):
libtasn1: fix the potential buffer overrun
libtasn1: Add the documentation
tpm2: Support authorized policy
cryptodisk: wipe out the cached keys from protectors
diskfilter: look up cryptodisk devices first
tpm2: Enable tpm2 module for grub-emu
tests: Add tpm2_test
Hernan Gatta (5):
key_protector: Add key protectors framework
tpm2: Add TPM Software Stack (TSS)
key_protector: Add TPM2 Key Protector
cryptodisk: Support key protectors
util/grub-protect: Add new tool
Patrick Colp (2):
tpm2: Implement NV index
cryptodisk: Fallback to passphrase
.gitignore | 2 +
Makefile.util.def | 37 +
configure.ac | 30 +
docs/grub-dev.texi | 28 +
docs/man/grub-protect.h2m | 4 +
grub-core/Makefile.am | 1 +
grub-core/Makefile.core.def | 48 +
grub-core/disk/cryptodisk.c | 183 +-
grub-core/disk/diskfilter.c | 35 +-
grub-core/disk/key_protector.c | 78 +
grub-core/kern/emu/main.c | 11 +-
grub-core/kern/emu/misc.c | 51 +
...asn1-disable-code-not-needed-in-grub.patch | 320 +++
...tasn1-changes-for-grub-compatibility.patch | 135 +
...sn1-fix-the-potential-buffer-overrun.patch | 35 +
grub-core/lib/libtasn1/COPYING | 16 +
grub-core/lib/libtasn1/README.md | 98 +
grub-core/lib/libtasn1/lib/coding.c | 1433 ++++++++++
grub-core/lib/libtasn1/lib/decoding.c | 2503 +++++++++++++++++
grub-core/lib/libtasn1/lib/element.c | 1109 ++++++++
grub-core/lib/libtasn1/lib/element.h | 42 +
grub-core/lib/libtasn1/lib/errors.c | 103 +
grub-core/lib/libtasn1/lib/gstr.c | 74 +
grub-core/lib/libtasn1/lib/gstr.h | 50 +
grub-core/lib/libtasn1/lib/int.h | 220 ++
grub-core/lib/libtasn1/lib/parser_aux.c | 1178 ++++++++
grub-core/lib/libtasn1/lib/parser_aux.h | 172 ++
grub-core/lib/libtasn1/lib/structure.c | 1227 ++++++++
grub-core/lib/libtasn1/lib/structure.h | 46 +
grub-core/lib/libtasn1_wrap/wrap.c | 26 +
grub-core/lib/posix_wrap/c-ctype.h | 114 +
grub-core/lib/posix_wrap/limits.h | 1 +
grub-core/lib/posix_wrap/stdlib.h | 8 +
grub-core/lib/posix_wrap/string.h | 21 +
grub-core/lib/posix_wrap/sys/types.h | 1 +
.../tests/asn1/CVE-2018-1000654-1_asn1_tab.h | 32 +
.../tests/asn1/CVE-2018-1000654-2_asn1_tab.h | 36 +
grub-core/tests/asn1/CVE-2018-1000654.c | 58 +
grub-core/tests/asn1/Test_overflow.c | 134 +
grub-core/tests/asn1/Test_simple.c | 205 ++
grub-core/tests/asn1/Test_strings.c | 142 +
grub-core/tests/asn1/asn1_test.c | 49 +
grub-core/tests/asn1/asn1_test.h | 44 +
grub-core/tests/asn1/object-id-decoding.c | 109 +
grub-core/tests/asn1/object-id-encoding.c | 114 +
grub-core/tests/asn1/octet-string.c | 199 ++
grub-core/tests/asn1/reproducers.c | 80 +
grub-core/tests/lib/functional_test.c | 1 +
grub-core/tpm2/args.c | 179 ++
grub-core/tpm2/buffer.c | 145 +
grub-core/tpm2/module.c | 1318 +++++++++
grub-core/tpm2/mu.c | 1168 ++++++++
grub-core/tpm2/tcg2-emu.c | 52 +
grub-core/tpm2/tcg2.c | 143 +
grub-core/tpm2/tpm2.c | 1048 +++++++
grub-core/tpm2/tpm2key.asn | 31 +
grub-core/tpm2/tpm2key.c | 443 +++
grub-core/tpm2/tpm2key_asn1_tab.c | 41 +
include/grub/cryptodisk.h | 16 +
include/grub/emu/misc.h | 5 +
include/grub/key_protector.h | 46 +
include/grub/libtasn1.h | 657 +++++
include/grub/tpm2/buffer.h | 65 +
include/grub/tpm2/internal/args.h | 51 +
include/grub/tpm2/internal/functions.h | 156 +
include/grub/tpm2/internal/structs.h | 768 +++++
include/grub/tpm2/internal/types.h | 403 +++
include/grub/tpm2/mu.h | 396 +++
include/grub/tpm2/tcg2.h | 34 +
include/grub/tpm2/tpm2.h | 34 +
include/grub/tpm2/tpm2key.h | 83 +
tests/asn1_test.in | 11 +
tests/tpm2_test.in | 311 ++
tests/util/grub-shell.in | 6 +-
util/grub-protect.c | 1378 +++++++++
75 files changed, 19588 insertions(+), 43 deletions(-)
create mode 100644 docs/man/grub-protect.h2m
create mode 100644 grub-core/disk/key_protector.c
create mode 100644 grub-core/lib/libtasn1-patches/0001-libtasn1-disable-code-not-needed-in-grub.patch
create mode 100644 grub-core/lib/libtasn1-patches/0002-libtasn1-changes-for-grub-compatibility.patch
create mode 100644 grub-core/lib/libtasn1-patches/0003-libtasn1-fix-the-potential-buffer-overrun.patch
create mode 100644 grub-core/lib/libtasn1/COPYING
create mode 100644 grub-core/lib/libtasn1/README.md
create mode 100644 grub-core/lib/libtasn1/lib/coding.c
create mode 100644 grub-core/lib/libtasn1/lib/decoding.c
create mode 100644 grub-core/lib/libtasn1/lib/element.c
create mode 100644 grub-core/lib/libtasn1/lib/element.h
create mode 100644 grub-core/lib/libtasn1/lib/errors.c
create mode 100644 grub-core/lib/libtasn1/lib/gstr.c
create mode 100644 grub-core/lib/libtasn1/lib/gstr.h
create mode 100644 grub-core/lib/libtasn1/lib/int.h
create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.c
create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.h
create mode 100644 grub-core/lib/libtasn1/lib/structure.c
create mode 100644 grub-core/lib/libtasn1/lib/structure.h
create mode 100644 grub-core/lib/libtasn1_wrap/wrap.c
create mode 100644 grub-core/lib/posix_wrap/c-ctype.h
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654-1_asn1_tab.h
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654-2_asn1_tab.h
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654.c
create mode 100644 grub-core/tests/asn1/Test_overflow.c
create mode 100644 grub-core/tests/asn1/Test_simple.c
create mode 100644 grub-core/tests/asn1/Test_strings.c
create mode 100644 grub-core/tests/asn1/asn1_test.c
create mode 100644 grub-core/tests/asn1/asn1_test.h
create mode 100644 grub-core/tests/asn1/object-id-decoding.c
create mode 100644 grub-core/tests/asn1/object-id-encoding.c
create mode 100644 grub-core/tests/asn1/octet-string.c
create mode 100644 grub-core/tests/asn1/reproducers.c
create mode 100644 grub-core/tpm2/args.c
create mode 100644 grub-core/tpm2/buffer.c
create mode 100644 grub-core/tpm2/module.c
create mode 100644 grub-core/tpm2/mu.c
create mode 100644 grub-core/tpm2/tcg2-emu.c
create mode 100644 grub-core/tpm2/tcg2.c
create mode 100644 grub-core/tpm2/tpm2.c
create mode 100644 grub-core/tpm2/tpm2key.asn
create mode 100644 grub-core/tpm2/tpm2key.c
create mode 100644 grub-core/tpm2/tpm2key_asn1_tab.c
create mode 100644 include/grub/key_protector.h
create mode 100644 include/grub/libtasn1.h
create mode 100644 include/grub/tpm2/buffer.h
create mode 100644 include/grub/tpm2/internal/args.h
create mode 100644 include/grub/tpm2/internal/functions.h
create mode 100644 include/grub/tpm2/internal/structs.h
create mode 100644 include/grub/tpm2/internal/types.h
create mode 100644 include/grub/tpm2/mu.h
create mode 100644 include/grub/tpm2/tcg2.h
create mode 100644 include/grub/tpm2/tpm2.h
create mode 100644 include/grub/tpm2/tpm2key.h
create mode 100644 tests/asn1_test.in
create mode 100644 tests/tpm2_test.in
create mode 100644 util/grub-protect.c
Range-diff against v11:
1: c1343113c = 1: c6a7b2a55 posix_wrap: tweaks in preparation for libtasn1
2: 1c60bdbbe = 2: c2dfb28d9 libtasn1: import libtasn1-4.19.0
3: 715f65934 = 3: f5c15acce libtasn1: disable code not needed in grub
4: d13793c21 = 4: 60cf41fa3 libtasn1: changes for grub compatibility
5: 8f7c3c3b2 = 5: ce32406ca libtasn1: fix the potential buffer overrun
6: 8515ccc24 = 6: 6410e21d8 libtasn1: compile into asn1 module
7: 24c129e64 = 7: a94e1b32c asn1_test: test module for libtasn1
8: 7a1aced55 = 8: 0e6041be0 libtasn1: Add the documentation
9: 957b048f2 ! 9: 386e4c04b key_protector: Add key protectors framework
@@ Commit message
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## grub-core/Makefile.am ##
@@ grub-core/Makefile.am: endif
@@ grub-core/disk/key_protector.c (new)
+grub_err_t
+grub_key_protector_register (struct grub_key_protector *protector)
+{
-+ if (protector == NULL || protector->name == NULL || grub_strlen(protector->name) == 0)
++ if (protector == NULL || protector->name == NULL || grub_strlen (protector->name) == 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ if (grub_key_protectors &&
10: cbeaf8472 ! 10: ba40ad414 tpm2: Add TPM Software Stack (TSS)
@@ Commit message
tpm2: Add TPM Software Stack (TSS)
A Trusted Platform Module (TPM) Software Stack (TSS) provides logic to
- compose, submit, and parse TPM commands and responses.
+ compose and submit TPM commands and parse reponses.
A limited number of TPM commands may be accessed via the EFI TCG2
protocol. This protocol exposes functionality that is primarily geared
@@ Commit message
Functions: TPM2_Create, TPM2_CreatePrimary, TPM2_EvictControl,
TPM2_FlushContext, TPM2_Load, TPM2_PCR_Read, TPM2_PolicyGetDigest,
TPM2_PolicyPCR, TPM2_ReadPublic, TPM2_StartAuthSession, TPM2_Unseal,
- TPM2_LoadExternal, TPM2_HashSequenceStart, TPM2_SequenceUpdate,
- TPM2_SequenceComplete, TPM2_Hash, TPM2_VerifySignature,
+ TPM2_LoadExternal, TPM2_Hash, TPM2_VerifySignature,
TPM2_PolicyAuthorize, TPM2_TestParms
Cc: Stefan Berger <stefanb@linux.ibm.com>
@@ grub-core/tpm2/tpm2.c (new)
+}
+
+TPM_RC
-+TPM2_HashSequenceStart (const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_AUTH *auth,
-+ const TPMI_ALG_HASH hashAlg,
-+ TPMI_DH_OBJECT *sequenceHandle,
-+ TPMS_AUTH_RESPONSE *authResponse)
-+{
-+ struct grub_tpm2_buffer in;
-+ struct grub_tpm2_buffer out;
-+ TPMI_DH_OBJECT sequenceHandleTmp;
-+ TPMS_AUTH_RESPONSE authResponseTmp;
-+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
-+ TPM_RC responseCode;
-+ TPM_RC rc;
-+ grub_uint32_t parameterSize;
-+
-+ if (!auth)
-+ return TPM_RC_VALUE;
-+
-+ if (!sequenceHandle)
-+ sequenceHandle = &sequenceHandleTmp;
-+ if (!authResponse)
-+ authResponse = &authResponseTmp;
-+
-+ grub_memset (sequenceHandle, 0, sizeof (*sequenceHandle));
-+ grub_memset (authResponse, 0, sizeof (*authResponse));
-+
-+ /* Marshal */
-+ grub_tpm2_buffer_init (&in);
-+ if (authCommand)
-+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
-+ grub_tpm2_mu_TPM2B_Marshal (&in, auth->size, auth->buffer);
-+ grub_tpm2_buffer_pack_u16 (&in, hashAlg);
-+ if (in.error)
-+ return TPM_RC_FAILURE;
-+
-+ /* Submit */
-+ grub_tpm2_buffer_init (&out);
-+ rc = grub_tpm2_submit_command (tag, TPM_CC_HashSequenceStart, &responseCode, &in,
-+ &out);
-+ if (rc != TPM_RC_SUCCESS)
-+ return rc;
-+ if (responseCode != TPM_RC_SUCCESS)
-+ return responseCode;
-+
-+ /* Unmarshal */
-+ grub_tpm2_buffer_unpack_u32 (&out, sequenceHandle);
-+ if (tag == TPM_ST_SESSIONS)
-+ {
-+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
-+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal(&out, authResponse);
-+ }
-+ if (out.error)
-+ return TPM_RC_FAILURE;
-+
-+ return TPM_RC_SUCCESS;
-+}
-+
-+TPM_RC
-+TPM2_SequenceUpdate (const TPMI_DH_OBJECT sequenceHandle,
-+ const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_MAX_BUFFER *buffer,
-+ TPMS_AUTH_RESPONSE *authResponse)
-+{
-+ struct grub_tpm2_buffer in;
-+ struct grub_tpm2_buffer out;
-+ TPMS_AUTH_RESPONSE authResponseTmp;
-+ TPM_RC responseCode;
-+ TPM_RC rc;
-+ grub_uint32_t parameterSize;
-+
-+ if (!authCommand)
-+ return TPM_RC_VALUE;
-+
-+ if (!authResponse)
-+ authResponse = &authResponseTmp;
-+
-+ grub_memset (authResponse, 0, sizeof (*authResponse));
-+
-+ /* Marshal */
-+ grub_tpm2_buffer_init (&in);
-+ grub_tpm2_buffer_pack_u32 (&in, sequenceHandle);
-+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
-+ if (buffer)
-+ grub_tpm2_mu_TPM2B_Marshal (&in, buffer->size, buffer->buffer);
-+ else
-+ grub_tpm2_buffer_pack_u16 (&in, 0);
-+ if (in.error)
-+ return TPM_RC_FAILURE;
-+
-+ /* Submit */
-+ grub_tpm2_buffer_init (&out);
-+ rc = grub_tpm2_submit_command (TPM_ST_SESSIONS, TPM_CC_SequenceUpdate,
-+ &responseCode, &in, &out);
-+ if (rc != TPM_RC_SUCCESS)
-+ return rc;
-+ if (responseCode != TPM_RC_SUCCESS)
-+ return responseCode;
-+
-+ /* Unmarshal */
-+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
-+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal(&out, authResponse);
-+ if (out.error)
-+ return TPM_RC_FAILURE;
-+
-+ return TPM_RC_SUCCESS;
-+}
-+
-+TPM_RC
-+TPM2_SequenceComplete (const TPMI_DH_OBJECT sequenceHandle,
-+ const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_MAX_BUFFER *buffer,
-+ const TPMI_RH_HIERARCHY hierarchy,
-+ TPM2B_DIGEST *result,
-+ TPMT_TK_HASHCHECK *validation,
-+ TPMS_AUTH_RESPONSE *authResponse)
-+{
-+ struct grub_tpm2_buffer in;
-+ struct grub_tpm2_buffer out;
-+ TPM2B_DIGEST resultTmp;
-+ TPMT_TK_HASHCHECK validationTmp;
-+ TPMS_AUTH_RESPONSE authResponseTmp;
-+ TPM_RC responseCode;
-+ TPM_RC rc;
-+ grub_uint32_t parameterSize;
-+
-+ if (!authCommand)
-+ return TPM_RC_VALUE;
-+
-+ if (!result)
-+ result = &resultTmp;
-+ if (!validation)
-+ validation = &validationTmp;
-+ if (!authResponse)
-+ authResponse = &authResponseTmp;
-+
-+ grub_memset (result, 0, sizeof (*result));
-+ grub_memset (validation, 0, sizeof (*validation));
-+ grub_memset (authResponse, 0, sizeof (*authResponse));
-+
-+ /* Marshal */
-+ grub_tpm2_buffer_init (&in);
-+ grub_tpm2_buffer_pack_u32 (&in, sequenceHandle);
-+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
-+ if (buffer)
-+ grub_tpm2_mu_TPM2B_Marshal (&in, buffer->size, buffer->buffer);
-+ else
-+ grub_tpm2_buffer_pack_u16 (&in, 0);
-+ grub_tpm2_buffer_pack_u32 (&in, hierarchy);
-+
-+ if (in.error)
-+ return TPM_RC_FAILURE;
-+
-+ /* Submit */
-+ grub_tpm2_buffer_init (&out);
-+ rc = grub_tpm2_submit_command (TPM_ST_SESSIONS, TPM_CC_SequenceComplete,
-+ &responseCode, &in, &out);
-+ if (rc != TPM_RC_SUCCESS)
-+ return rc;
-+ if (responseCode != TPM_RC_SUCCESS)
-+ return responseCode;
-+
-+ /* Unmarshal */
-+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
-+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (&out, result);
-+ grub_tpm2_mu_TPMT_TK_HASHCHECK_Unmarshal (&out, validation);
-+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal(&out, authResponse);
-+ if (out.error)
-+ return TPM_RC_FAILURE;
-+
-+ return TPM_RC_SUCCESS;
-+}
-+
-+TPM_RC
+TPM2_Hash (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_MAX_BUFFER *data,
+ const TPMI_ALG_HASH hashAlg,
@@ include/grub/tpm2/internal/functions.h (new)
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
-+TPM2_HashSequenceStart (const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_AUTH *auth,
-+ const TPMI_ALG_HASH hashAlg,
-+ TPMI_DH_OBJECT *sequenceHandle,
-+ TPMS_AUTH_RESPONSE *authResponse);
-+
-+TPM_RC
-+TPM2_SequenceUpdate (const TPMI_DH_OBJECT sequenceHandle,
-+ const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_MAX_BUFFER *buffer,
-+ TPMS_AUTH_RESPONSE *authResponse);
-+
-+TPM_RC
-+TPM2_SequenceComplete (const TPMI_DH_OBJECT sequenceHandle,
-+ const TPMS_AUTH_COMMAND *authCommand,
-+ const TPM2B_MAX_BUFFER *buffer,
-+ const TPMI_RH_HIERARCHY hierarchy,
-+ TPM2B_DIGEST *result,
-+ TPMT_TK_HASHCHECK *validation,
-+ TPMS_AUTH_RESPONSE *authResponse);
-+
-+TPM_RC
+TPM2_Hash (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_MAX_BUFFER *data,
+ const TPMI_ALG_HASH hashAlg,
@@ include/grub/tpm2/internal/types.h (new)
+/* TPM_CC Constants */
+typedef grub_uint32_t TPM_CC;
+
-+#define TPM_CC_EvictControl ((TPM_CC) 0x00000120)
-+#define TPM_CC_CreatePrimary ((TPM_CC) 0x00000131)
-+#define TPM_CC_Create ((TPM_CC) 0x00000153)
-+#define TPM_CC_FlushContext ((TPM_CC) 0x00000165)
-+#define TPM_CC_ReadPublic ((TPM_CC) 0x00000173)
-+#define TPM_CC_StartAuthSession ((TPM_CC) 0x00000176)
-+#define TPM_CC_PolicyPCR ((TPM_CC) 0x0000017f)
-+#define TPM_CC_NV_Read ((TPM_CC) 0x0000014e)
-+#define TPM_CC_NV_ReadPublic ((TPM_CC) 0x00000169)
-+#define TPM_CC_GetCapability ((TPM_CC) 0x0000017a)
-+#define TPM_CC_PCR_Read ((TPM_CC) 0x0000017e)
-+#define TPM_CC_Load ((TPM_CC) 0x00000157)
-+#define TPM_CC_LoadExternal ((TPM_CC) 0x00000167)
-+#define TPM_CC_Unseal ((TPM_CC) 0x0000015e)
-+#define TPM_CC_PolicyGetDigest ((TPM_CC) 0x00000189)
-+#define TPM_CC_HashSequenceStart ((TPM_CC) 0x00000186)
-+#define TPM_CC_SequenceUpdate ((TPM_CC) 0x0000015c)
-+#define TPM_CC_SequenceComplete ((TPM_CC) 0x0000013e)
-+#define TPM_CC_Hash ((TPM_CC) 0x0000017d)
-+#define TPM_CC_VerifySignature ((TPM_CC) 0x00000177)
-+#define TPM_CC_PolicyAuthorize ((TPM_CC) 0x0000016a)
-+#define TPM_CC_TestParms ((TPM_CC) 0x0000018a)
++#define TPM_CC_EvictControl ((TPM_CC) 0x00000120)
++#define TPM_CC_CreatePrimary ((TPM_CC) 0x00000131)
++#define TPM_CC_Create ((TPM_CC) 0x00000153)
++#define TPM_CC_FlushContext ((TPM_CC) 0x00000165)
++#define TPM_CC_ReadPublic ((TPM_CC) 0x00000173)
++#define TPM_CC_StartAuthSession ((TPM_CC) 0x00000176)
++#define TPM_CC_PolicyPCR ((TPM_CC) 0x0000017f)
++#define TPM_CC_NV_Read ((TPM_CC) 0x0000014e)
++#define TPM_CC_NV_ReadPublic ((TPM_CC) 0x00000169)
++#define TPM_CC_GetCapability ((TPM_CC) 0x0000017a)
++#define TPM_CC_PCR_Read ((TPM_CC) 0x0000017e)
++#define TPM_CC_Load ((TPM_CC) 0x00000157)
++#define TPM_CC_LoadExternal ((TPM_CC) 0x00000167)
++#define TPM_CC_Unseal ((TPM_CC) 0x0000015e)
++#define TPM_CC_PolicyGetDigest ((TPM_CC) 0x00000189)
++#define TPM_CC_Hash ((TPM_CC) 0x0000017d)
++#define TPM_CC_VerifySignature ((TPM_CC) 0x00000177)
++#define TPM_CC_PolicyAuthorize ((TPM_CC) 0x0000016a)
++#define TPM_CC_TestParms ((TPM_CC) 0x0000018a)
+
+/* Hash algorithm sizes */
+#define TPM_SHA1_DIGEST_SIZE 20
11: d65a0631d ! 11: e40320b73 key_protector: Add TPM2 Key Protector
@@ Commit message
command set will be extended to support advanced features, such as
authorized policy, in the later commits.
+ Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
@@ grub-core/tpm2/args.c (new)
+ grub_strcasecmp (value, "ECC_NIST_P256") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
++ srk_type->nameAlg = TPM_ALG_SHA256;
++ srk_type->aes_bits = 128;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+ else if (grub_strcasecmp (value, "RSA") == 0 ||
+ grub_strcasecmp (value, "RSA2048") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
++ srk_type->nameAlg = TPM_ALG_SHA256;
++ srk_type->aes_bits = 128;
+ srk_type->detail.rsa_bits = 2048;
+ }
+ else if (grub_strcasecmp (value, "RSA3072") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
++ srk_type->nameAlg = TPM_ALG_SHA384;
++ srk_type->aes_bits = 256;
+ srk_type->detail.rsa_bits = 3072;
+ }
+ else if (grub_strcasecmp (value, "RSA4096") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
++ srk_type->nameAlg = TPM_ALG_SHA384;
++ srk_type->aes_bits = 256;
+ srk_type->detail.rsa_bits = 4096;
+ }
+ else if (grub_strcasecmp (value, "ECC_NIST_P384") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
++ srk_type->nameAlg = TPM_ALG_SHA384;
++ srk_type->aes_bits = 256;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P384;
+ }
+ else if (grub_strcasecmp (value, "ECC_NIST_P521") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
++ srk_type->nameAlg = TPM_ALG_SHA512;
++ srk_type->aes_bits = 256;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P521;
+ }
-+ else if (grub_strcasecmp (value, "ECC_BN_P256") == 0)
-+ {
-+ srk_type->type = TPM_ALG_ECC;
-+ srk_type->detail.ecc_curve = TPM_ECC_BN_P256;
-+ }
-+ else if (grub_strcasecmp (value, "ECC_BN_P638") == 0)
-+ {
-+ srk_type->type = TPM_ALG_ECC;
-+ srk_type->detail.ecc_curve = TPM_ECC_BN_P638;
-+ }
+ else if (grub_strcasecmp (value, "ECC_SM2_P256") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
++ srk_type->nameAlg = TPM_ALG_SM3_256;
++ srk_type->aes_bits = 128;
+ srk_type->detail.ecc_curve = TPM_ECC_SM2_P256;
+ }
+ else
@@ grub-core/tpm2/module.c (new)
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Comma-separated list of PCRs used to authorize key release "
-+ "(e.g., '7,11', default is 7."),
++ "e.g., '7,11'. (default: 7)"),
+ },
+ {
+ .longarg = "bank",
@@ grub-core/tpm2/module.c (new)
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Bank of PCRs used to authorize key release: "
-+ "SHA1, SHA256 (default), SHA384 or SHA512."),
++ "SHA1, SHA256, SHA384 or SHA512. (default: SHA256)"),
+ },
+ /* SRK-mode options */
+ {
@@ grub-core/tpm2/module.c (new)
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
-+ N_("Required in SRK mode, path to the key file in TPM 2.0 Key File Format "
-+ "to unseal using the TPM (e.g., (hd0,gpt1)/boot/grub2/secret.tpm)."),
++ N_("In SRK mode, path to the key file in the TPM 2.0 Key File format "
++ "to unseal using the TPM (e.g., (hd0,gpt1)/boot/grub2/sealed.tpm)."),
+ },
+ {
+ .longarg = "keyfile",
@@ grub-core/tpm2/module.c (new)
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
-+ N_("Required in SRK mode, path to the sealed key file to unseal using "
-+ "the TPM (e.g., (hd0,gpt1)/boot/grub2/sealed_key). "
-+ "Use '-tpm2key' instead"),
++ N_("In SRK mode, path to the key file in the raw format to unseal "
++ "using the TPM (e.g., (hd0,gpt1)/boot/grub2/sealed.key). "
++ "(Mainly for backward compatibility. Please use '--tpm2key'.)"),
+ },
+ {
+ .longarg = "srk",
@@ grub-core/tpm2/module.c (new)
+ .doc =
+ N_("In SRK mode, the type of SRK: RSA (RSA2048), RSA3072, "
+ "RSA4096, ECC (ECC_NIST_P256), ECC_NIST_P384, "
-+ "ECC_NIST_P521, ECC_BN_P256, ECC_BN_P638, and ECC_SM2_P256. "
-+ "(default is ECC_NIST_P256)"),
++ "ECC_NIST_P521, and ECC_SM2_P256. (default: ECC)"),
+ },
+ /* NV Index-mode options */
+ {
@@ grub-core/tpm2/module.c (new)
+ TPM_HANDLE tmp_handle = 0;
+
+ inPublic.publicArea.type = srk_type.type;
-+ inPublic.publicArea.nameAlg = TPM_ALG_SHA256;
++ inPublic.publicArea.nameAlg = srk_type.nameAlg;
+ inPublic.publicArea.objectAttributes.restricted = 1;
+ inPublic.publicArea.objectAttributes.userWithAuth = 1;
+ inPublic.publicArea.objectAttributes.decrypt = 1;
@@ grub-core/tpm2/module.c (new)
+ if (srk_type.type == TPM_ALG_RSA)
+ {
+ inPublic.publicArea.parameters.rsaDetail.symmetric.algorithm = TPM_ALG_AES;
-+ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = 128;
++ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = srk_type.aes_bits;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.rsaDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.rsaDetail.keyBits = srk_type.detail.rsa_bits;
@@ grub-core/tpm2/module.c (new)
+ else if (srk_type.type == TPM_ALG_ECC)
+ {
+ inPublic.publicArea.parameters.eccDetail.symmetric.algorithm = TPM_ALG_AES;
-+ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = 128;
++ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = srk_type.aes_bits;
+ inPublic.publicArea.parameters.eccDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.eccDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.eccDetail.curveID = srk_type.detail.ecc_curve;
@@ grub-core/tpm2/module.c (new)
+ Return values:
+ * GRUB_ERR_NONE: Everything is fine.
+ * GRUB_ERR_BAD_ARGUMENT: The SRK doesn't match. Try another one.
-+ * Other: Something goes wrong.
++ * Other: Something went wrong.
+*/
+static grub_err_t
+grub_tpm2_protector_srk_load (const grub_srk_type_t srk_type,
@@ grub-core/tpm2/module.c (new)
+ {
+ switch (srk_type.detail.ecc_curve)
+ {
-+ case TPM_ECC_NIST_P256:
-+ return "ECC_NIST_P256";
++ case TPM_ECC_NIST_P256:
++ return "ECC_NIST_P256";
+ }
+ }
+ else if (srk_type.type == TPM_ALG_RSA)
@@ grub-core/tpm2/module.c (new)
+ return "RSA2048";
+ case 3072:
+ return "RSA3072";
-+ case 4096:
-+ return "RSA4096";
+ }
+ }
+
@@ grub-core/tpm2/module.c (new)
+ grub_srk_type_t fallback_srks[] = {
+ {
+ .type = TPM_ALG_ECC,
++ .nameAlg = TPM_ALG_SHA256,
++ .aes_bits = 128,
+ .detail.ecc_curve = TPM_ECC_NIST_P256,
+ },
+ {
+ .type = TPM_ALG_RSA,
++ .nameAlg = TPM_ALG_SHA256,
++ .aes_bits = 128,
+ .detail.rsa_bits = 2048,
+ },
+ {
+ .type = TPM_ALG_RSA,
++ .nameAlg = TPM_ALG_SHA384,
++ .aes_bits = 256,
+ .detail.rsa_bits = 3072,
+ },
+ {
@@ grub-core/tpm2/module.c (new)
+ if (ctx->srk_type.type == TPM_ALG_ERROR)
+ {
+ ctx->srk_type.type = TPM_ALG_ECC;
++ ctx->srk_type.nameAlg = TPM_ALG_SHA256;
++ ctx->srk_type.aes_bits = 128;
+ ctx->srk_type.detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+ }
@@ grub-core/tpm2/tpm2key.c (new)
+ err = GRUB_ERR_NONE;
+
+error:
-+ if (type_oid)
-+ grub_free (type_oid);
-+
-+ if (empty_auth)
-+ grub_free (empty_auth);
++ grub_free (type_oid);
++ grub_free (empty_auth);
+
+ return err;
+}
@@ grub-core/tpm2/tpm2key.c (new)
+void
+grub_tpm2key_end_parsing (asn1_node tpm2key)
+{
-+ if (tpm2key)
-+ asn1_delete_structure (&tpm2key);
++ asn1_delete_structure (&tpm2key);
+ tpm2key = NULL;
+}
+
@@ grub-core/tpm2/tpm2key.c (new)
+ /* Limit the number of authPolicy elements to two digits (99) */
+ if (authpol_n > 100 || authpol_n < 1)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
-+ N_("Invalid number of autoPolicy elements"));
++ N_("Invalid number of authPolicy elements"));
+
+ /*
+ * Iterate the authPolicy elements backwards since grub_list_push() prepends
@@ include/grub/tpm2/internal/args.h (new)
+
+struct grub_srk_type
+{
-+ TPM_ALG_ID type;
++ TPMI_ALG_PUBLIC type;
++ TPMI_ALG_HASH nameAlg;
++ TPM_KEY_BITS aes_bits;
+ union {
+ TPM_KEY_BITS rsa_bits;
+ TPM_ECC_CURVE ecc_curve;
12: 0d9998ab2 ! 12: 7e1d2591d cryptodisk: Support key protectors
@@ Commit message
Signed-off-by: Michael Chang <mchang@suse.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Glenn Washburn <development@efficientek.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## Makefile.util.def ##
@@ Makefile.util.def: library = {
@@ grub-core/disk/cryptodisk.c: grub_cryptodisk_scan_device_real (const char *name,
+
+ cargs->key_data = cargs->key_cache[i].key;
+ cargs->key_len = cargs->key_cache[i].key_len;
-
-- ret = grub_cryptodisk_insert (dev, name, source);
-- if (ret != GRUB_ERR_NONE)
++
+ ret = cr->recover_key (source, dev, cargs);
+ if (ret != GRUB_ERR_NONE)
+ {
@@ grub-core/disk/cryptodisk.c: grub_cryptodisk_scan_device_real (const char *name,
+ cargs->protectors[i], source->name,
+ source->partition != NULL ? "," : "",
+ part != NULL ? part : N_("UNKNOWN"), dev->uuid);
-+ grub_free (part);
-+ continue;
++ grub_free (part);
++ continue;
++ }
++ else
++ {
++ ret = grub_cryptodisk_insert (dev, name, source);
++ if (ret != GRUB_ERR_NONE)
++ goto error;
++ goto cleanup;
+ }
-+ else
-+ {
-+ ret = grub_cryptodisk_insert (dev, name, source);
-+ if (ret != GRUB_ERR_NONE)
-+ goto error;
-+ goto cleanup;
-+ }
+ }
-+
+
+- ret = grub_cryptodisk_insert (dev, name, source);
+- if (ret != GRUB_ERR_NONE)
+ part = grub_partition_get_name (source->partition);
+ grub_error (GRUB_ERR_ACCESS_DENIED,
+ N_("no key protector provided a usable key for %s%s%s (%s)"),
13: 0ce5fc0e6 ! 13: 4fe88cae7 util/grub-protect: Add new tool
@@ Commit message
written in the key file, so there is no need to specify PCRs when
invoking tpm2_key_protector_init.
+ Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
@@ Makefile.util.def: program = {
+program = {
+ name = grub-protect;
++ mansection = 1;
+
++ common = grub-core/kern/emu/argp_common.c;
+ common = grub-core/osdep/init.c;
+ common = grub-core/tpm2/args.c;
+ common = grub-core/tpm2/buffer.c;
@@ configure.ac: echo grub-mount: Yes
echo starfield theme: Yes
echo With DejaVuSans font from $DJVU_FONT_SOURCE
+ ## docs/man/grub-protect.h2m (new) ##
+@@
++[NAME]
++grub-protect \- protect a disk key with a key protector
++[DESCRIPTION]
++grub-protect helps to pretect a disk encryption key with a specified key protector.
+
## util/grub-protect.c (new) ##
@@
+/*
@@ util/grub-protect.c (new)
+#include <string.h>
+#include <unistd.h>
+
-+#include <grub/crypto.h>
-+#include <grub/emu/getroot.h>
+#include <grub/emu/hostdisk.h>
+#include <grub/emu/misc.h>
+#include <grub/tpm2/buffer.h>
@@ util/grub-protect.c (new)
+ .arg = "FILE",
+ .flags = 0,
+ .doc =
-+ N_("Path to the TPM2 device (default is /dev/tpm0)."),
++ N_("Path to the TPM2 device. (default: /dev/tpm0)"),
+ .group = 0
+ },
+ {
@@ util/grub-protect.c (new)
+ .flags = 0,
+ .doc =
+ N_("Comma-separated list of PCRs used to authorize key release "
-+ "(e.g., '7,11', default is 7."),
++ "e.g., '7,11'. Please be aware that PCR 0~7 are used by the "
++ "firmware and the measurement result may change after a "
++ "firmware update (for baremetal systems) or a package "
++ "(OVMF/SeaBIOS/SLOF) update in the VM host. This may lead to"
++ "the failure of key unsealing. (default: 7)"),
+ .group = 0
+ },
+ {
@@ util/grub-protect.c (new)
+ .flags = 0,
+ .doc =
+ N_("Bank of PCRs used to authorize key release: "
-+ "SHA1, SHA256 (default), or SHA512."),
++ "SHA1, SHA256, SHA384, or SHA512. (default: SHA256)"),
+ .group = 0
+ },
+ {
@@ util/grub-protect.c (new)
+ .doc =
+ N_("The type of SRK: RSA (RSA2048), RSA3072, RSA4096, "
+ "ECC (ECC_NIST_P256), ECC_NIST_P384, ECC_NIST_P521, "
-+ "ECC_BN_P256, ECC_BN_P638, and ECC_SM2_P256. "
-+ "(default is ECC_NIST_P256)"),
++ "and ECC_SM2_P256. (default: ECC)"),
+ .group = 0
+ },
+ {
@@ util/grub-protect.c (new)
+ };
+ TPML_PCR_SELECTION pcr_sel_out = { 0 };
+ TPML_DIGEST pcr_values = { 0 };
-+ grub_uint8_t *pcr_digest;
++ TPM2B_DIGEST pcr_digest = { 0 };
+ grub_size_t pcr_digest_len;
-+ grub_uint8_t *pcr_concat;
++ TPM2B_MAX_BUFFER pcr_concat = { 0 };
+ grub_size_t pcr_concat_len;
+ grub_uint8_t *pcr_cursor;
-+ const gcry_md_spec_t *hash_spec;
+ TPM2B_NONCE nonce = { 0 };
+ TPM2B_ENCRYPTED_SECRET salt = { 0 };
+ TPMT_SYM_DEF symmetric = { 0 };
+ TPMI_SH_AUTH_SESSION session = 0;
-+ TPM2B_DIGEST pcr_digest_in = {
-+ .size = TPM_SHA256_DIGEST_SIZE,
-+ .buffer = { 0 }
-+ };
+ TPM2B_DIGEST policy_digest = { 0 };
+ grub_uint8_t i;
+ grub_err_t err;
@@ util/grub-protect.c (new)
+ {
+ case TPM_ALG_SHA1:
+ pcr_digest_len = TPM_SHA1_DIGEST_SIZE;
-+ hash_spec = GRUB_MD_SHA1;
+ break;
+ case TPM_ALG_SHA256:
+ pcr_digest_len = TPM_SHA256_DIGEST_SIZE;
-+ hash_spec = GRUB_MD_SHA256;
++ break;
++ case TPM_ALG_SHA384:
++ pcr_digest_len = TPM_SHA384_DIGEST_SIZE;
+ break;
+ case TPM_ALG_SHA512:
+ pcr_digest_len = TPM_SHA512_DIGEST_SIZE;
-+ hash_spec = GRUB_MD_SHA512;
+ break;
-+ /* Although SHA384 can be parsed by grub_tpm2_protector_parse_bank(),
-+ it's not supported by the built-in libgcrypt, and we won't be able to
-+ calculate the PCR digest, so SHA384 is marked as unsupported. */
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
-+ pcr_digest = grub_malloc (pcr_digest_len);
-+ if (!pcr_digest)
-+ {
-+ fprintf (stderr, _("Failed to allocate PCR digest buffer.\n"));
-+ return GRUB_ERR_OUT_OF_MEMORY;
-+ }
-+
+ pcr_concat_len = pcr_digest_len * args->tpm2_pcr_count;
-+ pcr_concat = grub_malloc (pcr_concat_len);
-+ if (pcr_concat == NULL)
++ if (pcr_concat_len > TPM_MAX_DIGEST_BUFFER)
+ {
-+ err = GRUB_ERR_OUT_OF_MEMORY;
-+ fprintf (stderr, _("Failed to allocate PCR concatenation buffer.\n"));
-+ goto exit1;
++ fprintf (stderr, _("PCR concatenation buffer not enough.\n"));
++ return GRUB_ERR_OUT_OF_RANGE;
+ }
+
-+ pcr_cursor = pcr_concat;
++ pcr_cursor = pcr_concat.buffer;
+ for (i = 0; i < args->tpm2_pcr_count; i++)
+ {
+ if (pcr_values.digests[i].size != pcr_digest_len)
@@ util/grub-protect.c (new)
+ fprintf (stderr,
+ _("Bad PCR value size: expected %" PRIuGRUB_SIZE " bytes but got %u bytes.\n"),
+ pcr_digest_len, pcr_values.digests[i].size);
-+ goto exit2;
++ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ grub_memcpy (pcr_cursor, pcr_values.digests[i].buffer, pcr_digest_len);
+ pcr_cursor += pcr_digest_len;
+ }
++ pcr_concat.size = pcr_concat_len;
+
-+ grub_crypto_hash (hash_spec, pcr_digest, pcr_concat, pcr_concat_len);
++ rc = TPM2_Hash (NULL, &pcr_concat, args->tpm2_bank, TPM_RH_NULL, &pcr_digest,
++ NULL, NULL);
++ if (rc != TPM_RC_SUCCESS)
++ {
++ fprintf (stderr, _("Failed to generate PCR digest (TPM2_Hash: 0x%x)\n"), rc);
++ return GRUB_ERR_BAD_DEVICE;
++ }
+
+ /* Start Trial Session */
+ nonce.size = TPM_SHA256_DIGEST_SIZE;
@@ util/grub-protect.c (new)
+ fprintf (stderr,
+ _("Failed to start trial policy session (TPM2_StartAuthSession: 0x%x).\n"),
+ rc);
-+ err = GRUB_ERR_BAD_DEVICE;
-+ goto exit2;
++ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* PCR Policy */
-+ memcpy (pcr_digest_in.buffer, pcr_digest, TPM_SHA256_DIGEST_SIZE);
-+
-+ rc = TPM2_PolicyPCR (session, NULL, &pcr_digest_in, &pcr_sel, NULL);
++ rc = TPM2_PolicyPCR (session, NULL, &pcr_digest, &pcr_sel, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to submit PCR policy (TPM2_PolicyPCR: 0x%x).\n"),
+ rc);
+ err = GRUB_ERR_BAD_DEVICE;
-+ goto exit3;
++ goto error;
+ }
+
+ /* Retrieve Policy Digest */
@@ util/grub-protect.c (new)
+ fprintf (stderr, _("Failed to get policy digest (TPM2_PolicyGetDigest: 0x%x).\n"),
+ rc);
+ err = GRUB_ERR_BAD_DEVICE;
-+ goto exit3;
++ goto error;
+ }
+
+ /* Epilogue */
+ *digest = policy_digest;
+ err = GRUB_ERR_NONE;
+
-+exit3:
++error:
+ TPM2_FlushContext (session);
+
-+exit2:
-+ grub_free (pcr_concat);
-+
-+exit1:
-+ grub_free (pcr_digest);
-+
+ return err;
+}
+
@@ util/grub-protect.c (new)
+ /* Create SRK */
+ authCommand.sessionHandle = TPM_RS_PW;
+ inPublic.publicArea.type = args->srk_type.type;
-+ inPublic.publicArea.nameAlg = TPM_ALG_SHA256;
++ inPublic.publicArea.nameAlg = args->srk_type.nameAlg;
+ inPublic.publicArea.objectAttributes.restricted = 1;
+ inPublic.publicArea.objectAttributes.userWithAuth = 1;
+ inPublic.publicArea.objectAttributes.decrypt = 1;
@@ util/grub-protect.c (new)
+ {
+ case TPM_ALG_RSA:
+ inPublic.publicArea.parameters.rsaDetail.symmetric.algorithm = TPM_ALG_AES;
-+ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = 128;
++ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = args->srk_type.aes_bits;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.rsaDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.rsaDetail.keyBits = args->srk_type.detail.rsa_bits;
@@ util/grub-protect.c (new)
+
+ case TPM_ALG_ECC:
+ inPublic.publicArea.parameters.eccDetail.symmetric.algorithm = TPM_ALG_AES;
-+ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = 128;
++ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = args->srk_type.aes_bits;
+ inPublic.publicArea.parameters.eccDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.eccDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.eccDetail.curveID = args->srk_type.detail.ecc_curve;
@@ util/grub-protect.c (new)
+ if (args->srk_type.type == TPM_ALG_ERROR)
+ {
+ args->srk_type.type = TPM_ALG_ECC;
-+ args->srk_type.detail.rsa_bits = TPM_ECC_NIST_P256;
++ args->srk_type.nameAlg = TPM_ALG_SHA256;
++ args->srk_type.aes_bits = 128;
++ args->srk_type.detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+
+ if (args->tpm2_bank == TPM_ALG_ERROR)
@@ util/grub-protect.c (new)
+ grub_util_biosdisk_init (NULL);
+
+ grub_init_all ();
-+ grub_gcry_init_all ();
+
+ grub_lvm_fini ();
+ grub_mdraid09_fini ();
@@ util/grub-protect.c (new)
+static void
+grub_protect_fini (void)
+{
-+ grub_gcry_fini_all ();
+ grub_fini_all ();
+ grub_util_biosdisk_fini ();
+}
14: 7e3dcf00f ! 14: 0593d5901 tpm2: Support authorized policy
@@ Commit message
--after \
--input sealed.key \
--output sealed.tpm \
- sign 0,2,4,7.9
+ sign 0,2,4,7,9
Then specify the key file and the key protector to grub.cfg in the EFI
system partition:
@@ Commit message
(*2) https://github.com/okirch/pcr-oracle
Signed-off-by: Gary Lin <glin@suse.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## grub-core/tpm2/module.c ##
@@ grub-core/tpm2/module.c: grub_tpm2_protector_policypcr (TPMI_SH_AUTH_SESSION session,
15: fe01fa1e8 ! 15: 8ef188c56 tpm2: Implement NV index
@@ Commit message
Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
Signed-off-by: Gary Lin <glin@suse.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## grub-core/tpm2/module.c ##
@@ grub-core/tpm2/module.c: static grub_err_t
16: dfe806dc0 ! 16: 462ad79ed cryptodisk: Fallback to passphrase
@@ Commit message
`grub_errno` is now set. Print the existing errors out first, before
proceeding with the passphrase.
+ Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
Signed-off-by: Gary Lin <glin@suse.com>
17: b9f27bfba ! 17: 1f78c792c cryptodisk: wipe out the cached keys from protectors
@@ Commit message
the attacker could dump the memory to retrieve the secret key. To defend
such attack, wipe out the cached key when we don't need it.
- Signed-off-by: Gary Lin <glin@suse.com>
Cc: Fabian Vogt <fvogt@suse.com>
+ Signed-off-by: Gary Lin <glin@suse.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## grub-core/disk/cryptodisk.c ##
@@ grub-core/disk/cryptodisk.c: grub_cryptodisk_clear_key_cache (struct grub_cryptomount_args *cargs)
18: b7eb5c903 = 18: 2952ceced diskfilter: look up cryptodisk devices first
19: 624a8583f ! 19: add1027ed tpm2: Enable tpm2 module for grub-emu
@@ Commit message
further test TPM key unsealing with grub-emu.
Signed-off-by: Gary Lin <glin@suse.com>
+ Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
## grub-core/Makefile.core.def ##
@@ grub-core/Makefile.core.def: module = {
20: ce096c966 ! 20: a149dab00 tests: Add tpm2_test
@@ Commit message
Based on the idea from Michael Chang.
Cc: Michael Chang <mchang@suse.com>
+ Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Gary Lin <glin@suse.com>
## Makefile.util.def ##
@@ tests/tpm2_test.in (new)
+ exit 99
+fi
+
++if ! grep -q tpm_vtpm_proxy /proc/modules && ! modprobe tpm_vtpm_proxy; then
++ echo "no tpm_vtpm_proxy support; cannot test tpm2."
++ exit 99
++fi
++
+if ! which swtpm >/dev/null 2>&1; then
+ echo "swtpm not installed; cannot test tpm2."
+ exit 99
@@ tests/tpm2_test.in (new)
+# Choose a low iteration number to reduce the time to decrypt the disk
+csopt="--type luks2 --pbkdf pbkdf2 --iter-time 1000"
+
-+tpm2devname="vtpm-test0"
+tpm2statedir=${tpm2testdir}/tpm
-+tpm2dev="/dev/${tpm2devname}"
++tpm2ctrl=${tpm2statedir}/ctrl
++tpm2log=${tpm2statedir}/logfile
+
+sealedkey=${tpm2testdir}/sealed.tpm
+
@@ tests/tpm2_test.in (new)
+
+# Shutdown the swtpm instance on exit
+cleanup() {
-+ if [ -e "$tpm2dev" ]; then
-+ swtpm_ioctl -s ${tpm2dev}
++ RET=$?
++ if [ -e "$tpm2ctrl" ]; then
++ swtpm_ioctl -s --unix ${tpm2ctrl}
+ fi
-+ if [ "${RET:-1}" -eq 0 ]; then
++ if [ "${RET}" -eq 0 ]; then
+ rm -rf "$tpm2testdir" || :
+ fi
+}
+trap cleanup EXIT INT TERM KILL QUIT
+
-+# Shutdown the previous swtpm instance if exists
-+if [ -c "${tpm2dev}" ]; then
-+ swtpm_ioctl -s ${tpm2dev}
-+fi
++mkdir -p ${tpm2statedir}
+
-+# Create the swtpm cuse instannce
-+swtpm_cuse -n ${tpm2devname} --tpm2 --tpmstate dir=${tpm2statedir}
++# Create the swtpm chardev instannce
++swtpm chardev --vtpm-proxy --tpmstate dir=${tpm2statedir} \
++ --tpm2 --ctrl type=unixio,path=${tpm2ctrl} \
++ --flags startup-clear --daemon > ${tpm2log}
+ret=$?
+if [ "$ret" -ne 0 ]; then
+ exit $ret
+fi
+
-+# Initialize swtpm device
-+swtpm_ioctl -i ${tpm2dev}
-+ret=$?
-+if [ "$ret" -ne 0 ]; then
-+ exit $ret
++tpm2dev=$(grep "New TPM device" ${tpm2log} | cut -d' ' -f 4)
++if [ -z "${tpm2dev}" ]; then
++ exit QUIT
++fi
++
++# Wait for tpm2 chardev
++wait=3
++while [ "${wait}" -gt 0 ]; do
++ if [ -c "${tpm2dev}" ]; then
++ break;
++ fi
++ sleep 1
++ ((wait--))
++done
++if [ "$wait" -le 0 ]; then
++ exit QUIT
+fi
+
+# Export the TCTI variable for tpm2-tools
+export TPM2TOOLS_TCTI="device:${tpm2dev}"
+
-+# Send the startup command
-+tpm2_startup -c
-+ret=$?
-+if [ "$ret" -ne 0 ]; then
-+ exit $ret
-+fi
-+
+# Extend PCR 0
+tpm2_pcrextend 0:sha256=$(sha256sum <<< "test0" | cut -d ' ' -f 1)
+ret=$?
@@ tests/tpm2_test.in (new)
+fi
+
+tpm2_seal_unseal() {
-+ local tpm2_alg="$1"
++ local srk_alg="$1"
+ local handle_type="$2"
+ local srk_test="$3"
+
-+ local grub_tpm2_alg=${tpm2_alg}
++ local grub_srk_alg=${srk_alg}
+
+ local extra_opt=""
+ local extra_grub_opt=""
@@ tests/tpm2_test.in (new)
+ extra_opt="--tpm2-srk=${persistent_handle}"
+ fi
+
++ if [ "${srk_alg}" != "default" ]; then
++ extra_opt="${extra_opt} --tpm2-asymmetric=${srk_alg}"
++ fi
++
+ # Seal the password with grub-protect
+ grub-protect ${extra_opt} \
+ --tpm2-device=${tpm2dev} \
+ --action=add \
+ --protector=tpm2 \
+ --tpm2key \
-+ --tpm2-asymmetric=${tpm2_alg} \
+ --tpm2-bank=sha256 \
+ --tpm2-pcrs=0,1 \
+ --tpm2-keyfile=${lukskeyfile} \
@@ tests/tpm2_test.in (new)
+
+ # Flip the asymmetric algorithm in grub.cfg to trigger fallback SRKs
+ if [ "${srk_test}" == "fallback_srk" ]; then
-+ if [[ "${tpm2_alg}" == RSA* ]]; then
-+ grub_tpm2_alg="ECC"
-+ elif [[ "${tpm2_alg}" == ECC* ]]; then
-+ grub_tpm2_alg="RSA"
++ if [[ "${srk_alg}" == RSA* ]]; then
++ grub_srk_alg="ECC"
++ elif [[ "${srk_alg}" == ECC* ]]; then
++ grub_srk_alg="RSA"
+ fi
+ fi
+
-+ if [ "${handle_type}" != "persistent" ]; then
-+ extra_grub_opt="-a ${grub_tpm2_alg}"
++ if [ "${grub_srk_alg}" != "default" ] && [ "${handle_type}" != "persistent" ]; then
++ extra_grub_opt="-a ${grub_srk_alg}"
+ fi
+
+ # Write the TPM unsealing script
@@ tests/tpm2_test.in (new)
+ --tpm2-evict
+ fi
+
-+ return $ret
++ if [ "$ret" -eq 0 ]; then
++ if ! grep -q "^${vtext}$" "$testoutput"; then
++ echo "error: test not verified [`cat $testoutput`]" >&2
++ exit 1
++ fi
++ else
++ echo "grub-emu exited with error: $ret" >&2
++ exit $ret
++ fi
+}
+
+tpm2_seal_unseal_nv() {
@@ tests/tpm2_test.in (new)
+ # Ref: https://github.com/tpm2-software/tpm2-tools/issues/1338#issuecomment-469689398
+
+ # Create the primary object
-+ tpm2_createprimary -C o -g sha256 -G ecc -c ${primary_file}
++ tpm2_createprimary -C o -g sha256 -G ecc -c ${primary_file} -Q
+ tpm2_flushcontext -t
+
+ # Create the policy object
+ tpm2_startauthsession -S ${session_file}
-+ tpm2_policypcr -S ${session_file} -l sha256:0,1 -L ${policy_file}
++ tpm2_policypcr -S ${session_file} -l sha256:0,1 -L ${policy_file} -Q
+ tpm2_flushcontext ${session_file}
+
+ # Seal the key into TPM
-+ tpm2_create -C ${primary_file} -u ${keypub_file} -r ${keypriv_file} -L ${policy_file} -i ${lukskeyfile}
++ tpm2_create -C ${primary_file} -u ${keypub_file} -r ${keypriv_file} -L ${policy_file} -i ${lukskeyfile} -Q
+ tpm2_flushcontext -t
+ tpm2_load -C ${primary_file} -u ${keypub_file} -r ${keypriv_file} -n ${name_file} -c ${sealing_ctx_file}
+ tpm2_flushcontext -t
-+ tpm2_evictcontrol -C o -c ${sealing_ctx_file} ${persistent_handle}
++ tpm2_evictcontrol -C o -c ${sealing_ctx_file} ${persistent_handle} -Q
+
+ # Write the TPM unsealing script
+ cat > ${tpm2testdir}/testcase.cfg <<EOF
@@ tests/tpm2_test.in (new)
+ --tpm2-srk=${persistent_handle} \
+ --tpm2-evict
+
-+ return $ret
++ if [ "$ret" -eq 0 ]; then
++ if ! grep -q "^${vtext}$" "$testoutput"; then
++ echo "error: test not verified [`cat $testoutput`]" >&2
++ exit 1
++ fi
++ else
++ echo "grub-emu exited with error: $ret" >&2
++ exit $ret
++ fi
+}
+
++tpm2_seal_unseal default transient no_fallback_srk
++
+tpm2_seal_unseal RSA transient no_fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal ECC transient no_fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal RSA persistent no_fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal ECC persistent no_fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal RSA transient fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal ECC transient fallback_srk
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
+tpm2_seal_unseal_nv
-+ret=$?
-+if [ "$ret" -eq 0 ]; then
-+ if ! grep -q "^${vtext}$" "$testoutput"; then
-+ echo "error: test not verified [`cat $testoutput`]" >&2
-+ exit 1
-+ fi
-+else
-+ echo "grub-emu exited with error: $ret" >&2
-+ exit $ret
-+fi
+
-+exit $ret
++exit 0
## tests/util/grub-shell.in ##
@@ tests/util/grub-shell.in: work_directory=${WORKDIR:-`mktemp -d "${TMPDIR:-/tmp}/grub-shell.XXXXXXXXXX"`} |
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply [flat|nested] 29+ messages in thread
* [PATCH v12 01/20] posix_wrap: tweaks in preparation for libtasn1
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 02/20] libtasn1: import libtasn1-4.19.0 Gary Lin via Grub-devel
` (18 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
- Define SIZEOF_UNSIGNED_LONG_INT, it's the same as
SIZEOF_UNSIGNED_LONG.
- Define WORD_BIT, the size in bits of an int. This is a defined
in the Single Unix Specification and in gnulib's limits.h. gnulib
assumes it's 32 bits on all our platforms, including 64 bit
platforms, so we also use that value.
- Provide strto[u]l[l] preprocessor macros that resolve to
grub_strto[u]l[l]. To avoid gcrypt redefining strtoul, we
also define HAVE_STRTOUL here.
- Implement c-ctype.h and the functions defined in the header.
- Implement strncat in string.h.
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/lib/posix_wrap/c-ctype.h | 114 +++++++++++++++++++++++++++
grub-core/lib/posix_wrap/limits.h | 1 +
grub-core/lib/posix_wrap/stdlib.h | 8 ++
grub-core/lib/posix_wrap/string.h | 21 +++++
grub-core/lib/posix_wrap/sys/types.h | 1 +
5 files changed, 145 insertions(+)
create mode 100644 grub-core/lib/posix_wrap/c-ctype.h
diff --git a/grub-core/lib/posix_wrap/c-ctype.h b/grub-core/lib/posix_wrap/c-ctype.h
new file mode 100644
index 000000000..5f8fc8ce3
--- /dev/null
+++ b/grub-core/lib/posix_wrap/c-ctype.h
@@ -0,0 +1,114 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2024 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_POSIX_C_CTYPE_H
+#define GRUB_POSIX_C_CTYPE_H 1
+
+#include <grub/misc.h>
+
+static inline bool
+c_isspace (int c)
+{
+ return !!grub_isspace (c);
+}
+
+static inline bool
+c_isdigit (int c)
+{
+ return !!grub_isdigit (c);
+}
+
+static inline bool
+c_islower (int c)
+{
+ return !!grub_islower (c);
+}
+
+static inline bool
+c_isascii (int c)
+{
+ return !(c & ~0x7f);
+}
+
+static inline bool
+c_isupper (int c)
+{
+ return !!grub_isupper (c);
+}
+
+static inline bool
+c_isxdigit (int c)
+{
+ return !!grub_isxdigit (c);
+}
+
+static inline bool
+c_isprint (int c)
+{
+ return !!grub_isprint (c);
+}
+
+static inline bool
+c_iscntrl (int c)
+{
+ return !grub_isprint (c);
+}
+
+static inline bool
+c_isgraph (int c)
+{
+ return grub_isprint (c) && !grub_isspace (c);
+}
+
+static inline bool
+c_isalnum (int c)
+{
+ return grub_isalpha (c) || grub_isdigit (c);
+}
+
+static inline bool
+c_ispunct (int c)
+{
+ return grub_isprint (c) && !grub_isspace (c) && !c_isalnum (c);
+}
+
+static inline bool
+c_isalpha (int c)
+{
+ return !!grub_isalpha (c);
+}
+
+static inline bool
+c_isblank (int c)
+{
+ return c == ' ' || c == '\t';
+}
+
+static inline int
+c_tolower (int c)
+{
+ return grub_tolower (c);
+}
+
+static inline int
+c_toupper (int c)
+{
+ return grub_toupper (c);
+}
+
+#endif
diff --git a/grub-core/lib/posix_wrap/limits.h b/grub-core/lib/posix_wrap/limits.h
index 26918c8a0..4be7b4080 100644
--- a/grub-core/lib/posix_wrap/limits.h
+++ b/grub-core/lib/posix_wrap/limits.h
@@ -41,5 +41,6 @@
#define LONG_MAX GRUB_LONG_MAX
#define CHAR_BIT 8
+#define WORD_BIT 32
#endif
diff --git a/grub-core/lib/posix_wrap/stdlib.h b/grub-core/lib/posix_wrap/stdlib.h
index f5279756a..14e4efdd0 100644
--- a/grub-core/lib/posix_wrap/stdlib.h
+++ b/grub-core/lib/posix_wrap/stdlib.h
@@ -64,4 +64,12 @@ abort (void)
grub_abort ();
}
+#define strtol grub_strtol
+
+/* for libgcrypt */
+#define HAVE_STRTOUL
+#define strtoul grub_strtoul
+
+#define strtoull grub_strtoull
+
#endif
diff --git a/grub-core/lib/posix_wrap/string.h b/grub-core/lib/posix_wrap/string.h
index 1adb450b5..b0c5928d2 100644
--- a/grub-core/lib/posix_wrap/string.h
+++ b/grub-core/lib/posix_wrap/string.h
@@ -84,6 +84,27 @@ memchr (const void *s, int c, grub_size_t n)
return grub_memchr (s, c, n);
}
+static inline char *
+strncat(char *dest, const char *src, grub_size_t n)
+{
+ const char *end;
+ char *str = dest;
+ grub_size_t src_len;
+
+ dest += grub_strlen (dest);
+
+ end = grub_memchr (src, '\0', n);
+ if (end != NULL)
+ src_len = (grub_size_t) (end - src);
+ else
+ src_len = n;
+
+ dest[src_len] = '\0';
+ grub_memcpy (dest, src, src_len);
+
+ return str;
+}
+
#define memcmp grub_memcmp
#define memcpy grub_memcpy
#define memmove grub_memmove
diff --git a/grub-core/lib/posix_wrap/sys/types.h b/grub-core/lib/posix_wrap/sys/types.h
index eeda543c4..2f3e86549 100644
--- a/grub-core/lib/posix_wrap/sys/types.h
+++ b/grub-core/lib/posix_wrap/sys/types.h
@@ -50,6 +50,7 @@ typedef grub_uint8_t byte;
typedef grub_addr_t uintptr_t;
#define SIZEOF_UNSIGNED_LONG GRUB_CPU_SIZEOF_LONG
+#define SIZEOF_UNSIGNED_LONG_INT GRUB_CPU_SIZEOF_LONG
#define SIZEOF_UNSIGNED_INT 4
#define SIZEOF_UNSIGNED_LONG_LONG 8
#define SIZEOF_UNSIGNED_SHORT 2
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 02/20] libtasn1: import libtasn1-4.19.0
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 01/20] posix_wrap: tweaks in preparation for libtasn1 Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 03/20] libtasn1: disable code not needed in grub Gary Lin via Grub-devel
` (17 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
Import a very trimmed-down set of libtasn1 files:
pushd /tmp
wget https://ftp.gnu.org/gnu/libtasn1/libtasn1-4.19.0.tar.gz
tar -xf libtasn1-4.19.0.tar.gz
popd
pushd grub-core/lib
rm -rf libtasn1
mkdir libtasn1
cp /tmp/libtasn1-4.19.0/{README.md,COPYING} libtasn1/
mkdir libtasn1/lib
cp /tmp/libtasn1-4.19.0/lib/{coding.c,decoding.c,element.c,element.h,errors.c,gstr.c,gstr.h,int.h,parser_aux.c,parser_aux.h,structure.c,structure.h} libtasn1/lib
cp /tmp/libtasn1-4.19.0/lib/includes/libtasn1.h ../../include/grub/
git add libtasn1/ ../../include/grub/libtasn1.h
popd
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
---
grub-core/lib/libtasn1/COPYING | 16 +
grub-core/lib/libtasn1/README.md | 98 +
grub-core/lib/libtasn1/lib/coding.c | 1425 +++++++++++++
grub-core/lib/libtasn1/lib/decoding.c | 2501 +++++++++++++++++++++++
grub-core/lib/libtasn1/lib/element.c | 1109 ++++++++++
grub-core/lib/libtasn1/lib/element.h | 42 +
grub-core/lib/libtasn1/lib/errors.c | 100 +
grub-core/lib/libtasn1/lib/gstr.c | 74 +
grub-core/lib/libtasn1/lib/gstr.h | 50 +
grub-core/lib/libtasn1/lib/int.h | 221 ++
grub-core/lib/libtasn1/lib/parser_aux.c | 1178 +++++++++++
grub-core/lib/libtasn1/lib/parser_aux.h | 172 ++
grub-core/lib/libtasn1/lib/structure.c | 1225 +++++++++++
grub-core/lib/libtasn1/lib/structure.h | 46 +
include/grub/libtasn1.h | 643 ++++++
15 files changed, 8900 insertions(+)
create mode 100644 grub-core/lib/libtasn1/COPYING
create mode 100644 grub-core/lib/libtasn1/README.md
create mode 100644 grub-core/lib/libtasn1/lib/coding.c
create mode 100644 grub-core/lib/libtasn1/lib/decoding.c
create mode 100644 grub-core/lib/libtasn1/lib/element.c
create mode 100644 grub-core/lib/libtasn1/lib/element.h
create mode 100644 grub-core/lib/libtasn1/lib/errors.c
create mode 100644 grub-core/lib/libtasn1/lib/gstr.c
create mode 100644 grub-core/lib/libtasn1/lib/gstr.h
create mode 100644 grub-core/lib/libtasn1/lib/int.h
create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.c
create mode 100644 grub-core/lib/libtasn1/lib/parser_aux.h
create mode 100644 grub-core/lib/libtasn1/lib/structure.c
create mode 100644 grub-core/lib/libtasn1/lib/structure.h
create mode 100644 include/grub/libtasn1.h
diff --git a/grub-core/lib/libtasn1/COPYING b/grub-core/lib/libtasn1/COPYING
new file mode 100644
index 000000000..e8b3628db
--- /dev/null
+++ b/grub-core/lib/libtasn1/COPYING
@@ -0,0 +1,16 @@
+LICENSING
+=========
+
+The libtasn1 library is released under the GNU Lesser General Public
+License (LGPL) version 2.1 or later; see [COPYING.LESSER](doc/COPYING.LESSER)
+for the license terms.
+
+The GNU LGPL applies to the main libtasn1 library, while the
+included applications library are under the GNU GPL version 3.
+The libtasn1 library is located in the lib directory, while the applications
+in src/.
+
+The documentation in doc/ is under the GNU FDL license 1.3.
+
+For any copyright year range specified as YYYY-ZZZZ in this package
+note that the range specifies every single year in that closed interval.
diff --git a/grub-core/lib/libtasn1/README.md b/grub-core/lib/libtasn1/README.md
new file mode 100644
index 000000000..b0305b93e
--- /dev/null
+++ b/grub-core/lib/libtasn1/README.md
@@ -0,0 +1,98 @@
+# Libtasn1 README -- Introduction information
+
+This is GNU Libtasn1, a small ASN.1 library.
+
+The C library (libtasn1.*) is licensed under the GNU Lesser General
+Public License version 2.1 or later. See the file COPYING.LIB.
+
+The command line tool, self tests, examples, and other auxilliary
+files, are licensed under the GNU General Public License version 3.0
+or later. See the file COPYING.
+
+## Building the library
+
+We require several tools to build the software, including:
+
+* [Make](https://www.gnu.org/software/make/)
+* [Automake](https://www.gnu.org/software/automake/) (use 1.11.3 or later)
+* [Autoconf](https://www.gnu.org/software/autoconf/)
+* [Libtool](https://www.gnu.org/software/libtool/)
+* [Texinfo](https://www.gnu.org/software/texinfo/)
+* [help2man](http://www.gnu.org/software/help2man/)
+* [Tar](https://www.gnu.org/software/tar/)
+* [Gzip](https://www.gnu.org/software/gzip/)
+* [bison](https://www.gnu.org/software/bison/)
+* [Texlive & epsf](https://www.tug.org/texlive/) (for PDF manual)
+* [GTK-DOC](https://www.gtk.org/gtk-doc/) (for API manual)
+* [Git](https://git-scm.com/)
+* [libabigail](https://pagure.io/libabigail/) (for abi comparison in make dist)
+* [Valgrind](https://valgrind.org/) (optional)
+
+The required software is typically distributed with your operating
+system, and the instructions for installing them differ. Here are
+some hints:
+
+Debian/Ubuntu:
+```
+sudo apt-get install make git autoconf automake libtool bison
+sudo apt-get install texinfo help2man gtk-doc-tools valgrind abigail-tools
+```
+
+PDF manual - Debian <= stretch:
+```
+sudo apt-get install texlive-generic-recommended texlive texlive-extra-utils
+```
+
+PDF manual - Debian >= buster:
+```
+sudo apt-get install texlive-plain-generic texlive texlive-extra-utils
+```
+
+The next step is to run autoreconf, ./configure, etc:
+
+```
+$ ./bootstrap
+```
+
+Then build the project normally:
+
+```
+$ ./configure
+$ make check
+```
+
+Happy hacking!
+
+
+## Manual
+
+The manual is in the `doc/` directory of the release.
+
+You can also browse the manual online at:
+
+ - https://www.gnu.org/software/libtasn1/manual/
+ - https://gnutls.gitlab.io/libtasn1/manual/
+ - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.html
+ - https://gnutls.gitlab.io/libtasn1/manual/libtasn1.pdf
+ - https://gnutls.gitlab.io/libtasn1/reference/
+ - https://gnutls.gitlab.io/libtasn1/reference/libtasn1.pdf
+
+
+## Code coverage report
+
+The coverage report is at:
+
+ - https://gnutls.gitlab.io/libtasn1/coverage
+
+
+## Issue trackers
+
+ - [Main issue tracker](https://gitlab.com/gnutls/libtasn1/issues)
+ - [oss-fuzz found issues](https://bugs.chromium.org/p/oss-fuzz/issues/list?q=libtasn1&can=2)
+
+
+## Homepage
+
+The project homepage at the gnu site is at:
+
+https://www.gnu.org/software/libtasn1/
diff --git a/grub-core/lib/libtasn1/lib/coding.c b/grub-core/lib/libtasn1/lib/coding.c
new file mode 100644
index 000000000..ea5bc370e
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/coding.c
@@ -0,0 +1,1425 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: coding.c */
+/* Description: Functions to create a DER coding of */
+/* an ASN1 type. */
+/*****************************************************/
+
+#include <int.h>
+#include "parser_aux.h"
+#include <gstr.h>
+#include "element.h"
+#include "minmax.h"
+#include <structure.h>
+
+#define MAX_TAG_LEN 16
+
+/******************************************************/
+/* Function : _asn1_error_description_value_not_found */
+/* Description: creates the ErrorDescription string */
+/* for the ASN1_VALUE_NOT_FOUND error. */
+/* Parameters: */
+/* node: node of the tree where the value is NULL. */
+/* ErrorDescription: string returned. */
+/* Return: */
+/******************************************************/
+static void
+_asn1_error_description_value_not_found (asn1_node node,
+ char *ErrorDescription)
+{
+
+ if (ErrorDescription == NULL)
+ return;
+
+ Estrcpy (ErrorDescription, ":: value of element '");
+ _asn1_hierarchical_name (node, ErrorDescription + strlen (ErrorDescription),
+ ASN1_MAX_ERROR_DESCRIPTION_SIZE - 40);
+ Estrcat (ErrorDescription, "' not found");
+
+}
+
+/**
+ * asn1_length_der:
+ * @len: value to convert.
+ * @der: buffer to hold the returned encoding (may be %NULL).
+ * @der_len: number of meaningful bytes of ANS (der[0]..der[der_len-1]).
+ *
+ * Creates the DER encoding of the provided length value.
+ * The @der buffer must have enough room for the output. The maximum
+ * length this function will encode is %ASN1_MAX_LENGTH_SIZE.
+ *
+ * To know the size of the DER encoding use a %NULL value for @der.
+ **/
+void
+asn1_length_der (unsigned long int len, unsigned char *der, int *der_len)
+{
+ int k;
+ unsigned char temp[ASN1_MAX_LENGTH_SIZE];
+#if SIZEOF_UNSIGNED_LONG_INT > 8
+ len &= 0xFFFFFFFFFFFFFFFF;
+#endif
+
+ if (len < 128)
+ {
+ /* short form */
+ if (der != NULL)
+ der[0] = (unsigned char) len;
+ *der_len = 1;
+ }
+ else
+ {
+ /* Long form */
+ k = 0;
+ while (len)
+ {
+ temp[k++] = len & 0xFF;
+ len = len >> 8;
+ }
+ *der_len = k + 1;
+ if (der != NULL)
+ {
+ der[0] = ((unsigned char) k & 0x7F) + 128;
+ while (k--)
+ der[*der_len - 1 - k] = temp[k];
+ }
+ }
+}
+
+/******************************************************/
+/* Function : _asn1_tag_der */
+/* Description: creates the DER coding for the CLASS */
+/* and TAG parameters. */
+/* It is limited by the ASN1_MAX_TAG_SIZE variable */
+/* Parameters: */
+/* class: value to convert. */
+/* tag_value: value to convert. */
+/* ans: string returned. */
+/* ans_len: number of meaningful bytes of ANS */
+/* (ans[0]..ans[ans_len-1]). */
+/* Return: */
+/******************************************************/
+static void
+_asn1_tag_der (unsigned char class, unsigned int tag_value,
+ unsigned char ans[ASN1_MAX_TAG_SIZE], int *ans_len)
+{
+ int k;
+ unsigned char temp[ASN1_MAX_TAG_SIZE];
+
+ if (tag_value < 31)
+ {
+ /* short form */
+ ans[0] = (class & 0xE0) + ((unsigned char) (tag_value & 0x1F));
+ *ans_len = 1;
+ }
+ else
+ {
+ /* Long form */
+ ans[0] = (class & 0xE0) + 31;
+ k = 0;
+ while (tag_value != 0)
+ {
+ temp[k++] = tag_value & 0x7F;
+ tag_value >>= 7;
+
+ if (k > ASN1_MAX_TAG_SIZE - 1)
+ break; /* will not encode larger tags */
+ }
+ *ans_len = k + 1;
+ while (k--)
+ ans[*ans_len - 1 - k] = temp[k] + 128;
+ ans[*ans_len - 1] -= 128;
+ }
+}
+
+/**
+ * asn1_octet_der:
+ * @str: the input data.
+ * @str_len: STR length (str[0]..str[*str_len-1]).
+ * @der: encoded string returned.
+ * @der_len: number of meaningful bytes of DER (der[0]..der[der_len-1]).
+ *
+ * Creates a length-value DER encoding for the input data.
+ * The DER encoding of the input data will be placed in the @der variable.
+ *
+ * Note that the OCTET STRING tag is not included in the output.
+ *
+ * This function does not return any value because it is expected
+ * that @der_len will contain enough bytes to store the string
+ * plus the DER encoding. The DER encoding size can be obtained using
+ * asn1_length_der().
+ **/
+void
+asn1_octet_der (const unsigned char *str, int str_len,
+ unsigned char *der, int *der_len)
+{
+ int len_len;
+
+ if (der == NULL || str_len < 0)
+ return;
+
+ asn1_length_der (str_len, der, &len_len);
+ memcpy (der + len_len, str, str_len);
+ *der_len = str_len + len_len;
+}
+
+
+/**
+ * asn1_encode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @str: the string data.
+ * @str_len: the string length
+ * @tl: the encoded tag and length
+ * @tl_len: the bytes of the @tl field
+ *
+ * Creates the DER encoding for various simple ASN.1 types like strings etc.
+ * It stores the tag and length in @tl, which should have space for at least
+ * %ASN1_MAX_TL_SIZE bytes. Initially @tl_len should contain the size of @tl.
+ *
+ * The complete DER encoding should consist of the value in @tl appended
+ * with the provided @str.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
+ unsigned int str_len, unsigned char *tl,
+ unsigned int *tl_len)
+{
+ int tag_len, len_len;
+ unsigned tlen;
+ unsigned char der_tag[ASN1_MAX_TAG_SIZE];
+ unsigned char der_length[ASN1_MAX_LENGTH_SIZE];
+ unsigned char *p;
+
+ if (str == NULL)
+ return ASN1_VALUE_NOT_VALID;
+
+ if (ETYPE_OK (etype) == 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ /* doesn't handle constructed classes */
+ if (ETYPE_CLASS (etype) != ASN1_CLASS_UNIVERSAL)
+ return ASN1_VALUE_NOT_VALID;
+
+ _asn1_tag_der (ETYPE_CLASS (etype), ETYPE_TAG (etype), der_tag, &tag_len);
+
+ asn1_length_der (str_len, der_length, &len_len);
+
+ if (tag_len <= 0 || len_len <= 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ tlen = tag_len + len_len;
+
+ if (*tl_len < tlen)
+ return ASN1_MEM_ERROR;
+
+ p = tl;
+ memcpy (p, der_tag, tag_len);
+ p += tag_len;
+ memcpy (p, der_length, len_len);
+
+ *tl_len = tlen;
+
+ return ASN1_SUCCESS;
+}
+
+/******************************************************/
+/* Function : _asn1_time_der */
+/* Description: creates the DER coding for a TIME */
+/* type (length included). */
+/* Parameters: */
+/* str: TIME null-terminated string. */
+/* der: string returned. */
+/* der_len: number of meaningful bytes of DER */
+/* (der[0]..der[ans_len-1]). Initially it */
+/* if must store the lenght of DER. */
+/* Return: */
+/* ASN1_MEM_ERROR when DER isn't big enough */
+/* ASN1_SUCCESS otherwise */
+/******************************************************/
+static int
+_asn1_time_der (unsigned char *str, int str_len, unsigned char *der,
+ int *der_len)
+{
+ int len_len;
+ int max_len;
+
+ max_len = *der_len;
+
+ asn1_length_der (str_len, (max_len > 0) ? der : NULL, &len_len);
+
+ if ((len_len + str_len) <= max_len)
+ memcpy (der + len_len, str, str_len);
+ *der_len = len_len + str_len;
+
+ if ((*der_len) > max_len)
+ return ASN1_MEM_ERROR;
+
+ return ASN1_SUCCESS;
+}
+
+
+/*
+void
+_asn1_get_utctime_der(unsigned char *der,int *der_len,unsigned char *str)
+{
+ int len_len,str_len;
+ char temp[20];
+
+ if(str==NULL) return;
+ str_len=asn1_get_length_der(der,*der_len,&len_len);
+ if (str_len<0) return;
+ memcpy(temp,der+len_len,str_len);
+ *der_len=str_len+len_len;
+ switch(str_len)
+ {
+ case 11:
+ temp[10]=0;
+ strcat(temp,"00+0000");
+ break;
+ case 13:
+ temp[12]=0;
+ strcat(temp,"+0000");
+ break;
+ case 15:
+ temp[15]=0;
+ memmove(temp+12,temp+10,6);
+ temp[10]=temp[11]='0';
+ break;
+ case 17:
+ temp[17]=0;
+ break;
+ default:
+ return;
+ }
+ strcpy(str,temp);
+}
+*/
+
+static void
+encode_val (uint64_t val, unsigned char *der, int max_len, int *der_len)
+{
+ int first, k;
+ unsigned char bit7;
+
+ first = 0;
+ for (k = sizeof (val); k >= 0; k--)
+ {
+ bit7 = (val >> (k * 7)) & 0x7F;
+ if (bit7 || first || !k)
+ {
+ if (k)
+ bit7 |= 0x80;
+ if (max_len > (*der_len))
+ der[*der_len] = bit7;
+ (*der_len)++;
+ first = 1;
+ }
+ }
+}
+
+/******************************************************/
+/* Function : _asn1_object_id_der */
+/* Description: creates the DER coding for an */
+/* OBJECT IDENTIFIER type (length included). */
+/* Parameters: */
+/* str: OBJECT IDENTIFIER null-terminated string. */
+/* der: string returned. */
+/* der_len: number of meaningful bytes of DER */
+/* (der[0]..der[ans_len-1]). Initially it */
+/* must store the length of DER. */
+/* Return: */
+/* ASN1_MEM_ERROR when DER isn't big enough */
+/* ASN1_SUCCESS if succesful */
+/* or an error value. */
+/******************************************************/
+static int
+_asn1_object_id_der (const char *str, unsigned char *der, int *der_len)
+{
+ int len_len, counter, max_len;
+ char *temp, *n_end, *n_start;
+ uint64_t val, val1 = 0;
+ int str_len = _asn1_strlen (str);
+
+ max_len = *der_len;
+ *der_len = 0;
+
+ if (der == NULL && max_len > 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ temp = malloc (str_len + 2);
+ if (temp == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+
+ memcpy (temp, str, str_len);
+ temp[str_len] = '.';
+ temp[str_len + 1] = 0;
+
+ counter = 0;
+ n_start = temp;
+ while ((n_end = strchr (n_start, '.')))
+ {
+ *n_end = 0;
+ val = _asn1_strtou64 (n_start, NULL, 10);
+ counter++;
+
+ if (counter == 1)
+ {
+ val1 = val;
+ }
+ else if (counter == 2)
+ {
+ uint64_t val0;
+
+ if (val1 > 2)
+ {
+ free (temp);
+ return ASN1_VALUE_NOT_VALID;
+ }
+ else if ((val1 == 0 || val1 == 1) && val > 39)
+ {
+ free (temp);
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ val0 = 40 * val1 + val;
+ encode_val (val0, der, max_len, der_len);
+ }
+ else
+ {
+ encode_val (val, der, max_len, der_len);
+ }
+ n_start = n_end + 1;
+ }
+
+ asn1_length_der (*der_len, NULL, &len_len);
+ if (max_len >= (*der_len + len_len))
+ {
+ memmove (der + len_len, der, *der_len);
+ asn1_length_der (*der_len, der, &len_len);
+ }
+ *der_len += len_len;
+
+ free (temp);
+
+ if (max_len < (*der_len))
+ return ASN1_MEM_ERROR;
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_object_id_der:
+ * @str: An object identifier in numeric, dot format.
+ * @der: buffer to hold the returned encoding (may be %NULL).
+ * @der_len: initially the size of @der; will hold the final size.
+ * @flags: must be zero
+ *
+ * Creates the DER encoding of the provided object identifier.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding was OK, %ASN1_VALUE_NOT_VALID
+ * if @str is not a valid OID, %ASN1_MEM_ERROR if the @der
+ * vector isn't big enough and in this case @der_len will contain the
+ * length needed.
+ **/
+int
+asn1_object_id_der (const char *str, unsigned char *der, int *der_len,
+ unsigned flags)
+{
+ unsigned char tag_der[MAX_TAG_LEN];
+ int tag_len = 0, r;
+ int max_len = *der_len;
+
+ *der_len = 0;
+
+ _asn1_tag_der (ETYPE_CLASS (ASN1_ETYPE_OBJECT_ID),
+ ETYPE_TAG (ASN1_ETYPE_OBJECT_ID), tag_der, &tag_len);
+
+ if (max_len > tag_len)
+ {
+ memcpy (der, tag_der, tag_len);
+ }
+ max_len -= tag_len;
+ der += tag_len;
+
+ r = _asn1_object_id_der (str, der, &max_len);
+ if (r == ASN1_MEM_ERROR || r == ASN1_SUCCESS)
+ {
+ *der_len = max_len + tag_len;
+ }
+
+ return r;
+}
+
+static const unsigned char bit_mask[] =
+ { 0xFF, 0xFE, 0xFC, 0xF8, 0xF0, 0xE0, 0xC0, 0x80 };
+
+/**
+ * asn1_bit_der:
+ * @str: BIT string.
+ * @bit_len: number of meaningful bits in STR.
+ * @der: string returned.
+ * @der_len: number of meaningful bytes of DER
+ * (der[0]..der[ans_len-1]).
+ *
+ * Creates a length-value DER encoding for the input data
+ * as it would have been for a BIT STRING.
+ * The DER encoded data will be copied in @der.
+ *
+ * Note that the BIT STRING tag is not included in the output.
+ *
+ * This function does not return any value because it is expected
+ * that @der_len will contain enough bytes to store the string
+ * plus the DER encoding. The DER encoding size can be obtained using
+ * asn1_length_der().
+ **/
+void
+asn1_bit_der (const unsigned char *str, int bit_len,
+ unsigned char *der, int *der_len)
+{
+ int len_len, len_byte, len_pad;
+
+ if (der == NULL)
+ return;
+
+ len_byte = bit_len >> 3;
+ len_pad = 8 - (bit_len & 7);
+ if (len_pad == 8)
+ len_pad = 0;
+ else
+ len_byte++;
+ asn1_length_der (len_byte + 1, der, &len_len);
+ der[len_len] = len_pad;
+
+ if (str)
+ memcpy (der + len_len + 1, str, len_byte);
+ der[len_len + len_byte] &= bit_mask[len_pad];
+ *der_len = len_byte + len_len + 1;
+}
+
+
+/******************************************************/
+/* Function : _asn1_complete_explicit_tag */
+/* Description: add the length coding to the EXPLICIT */
+/* tags. */
+/* Parameters: */
+/* node: pointer to the tree element. */
+/* der: string with the DER coding of the whole tree*/
+/* counter: number of meaningful bytes of DER */
+/* (der[0]..der[*counter-1]). */
+/* max_len: size of der vector */
+/* Return: */
+/* ASN1_MEM_ERROR if der vector isn't big enough, */
+/* otherwise ASN1_SUCCESS. */
+/******************************************************/
+static int
+_asn1_complete_explicit_tag (asn1_node node, unsigned char *der,
+ int *counter, int *max_len)
+{
+ asn1_node p;
+ int is_tag_implicit, len2, len3;
+ unsigned char temp[SIZEOF_UNSIGNED_INT];
+
+ if (der == NULL && *max_len > 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ is_tag_implicit = 0;
+
+ if (node->type & CONST_TAG)
+ {
+ p = node->down;
+ if (p == NULL)
+ return ASN1_DER_ERROR;
+ /* When there are nested tags we must complete them reverse to
+ the order they were created. This is because completing a tag
+ modifies all data within it, including the incomplete tags
+ which store buffer positions -- simon@josefsson.org 2002-09-06
+ */
+ while (p->right)
+ p = p->right;
+ while (p && p != node->down->left)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_TAG)
+ {
+ if (p->type & CONST_EXPLICIT)
+ {
+ len2 = strtol (p->name, NULL, 10);
+ _asn1_set_name (p, NULL);
+
+ asn1_length_der (*counter - len2, temp, &len3);
+ if (len3 <= (*max_len))
+ {
+ memmove (der + len2 + len3, der + len2,
+ *counter - len2);
+ memcpy (der + len2, temp, len3);
+ }
+ *max_len -= len3;
+ *counter += len3;
+ is_tag_implicit = 0;
+ }
+ else
+ { /* CONST_IMPLICIT */
+ if (!is_tag_implicit)
+ {
+ is_tag_implicit = 1;
+ }
+ }
+ }
+ p = p->left;
+ }
+ }
+
+ if (*max_len < 0)
+ return ASN1_MEM_ERROR;
+
+ return ASN1_SUCCESS;
+}
+
+const tag_and_class_st _asn1_tags[] = {
+ [ASN1_ETYPE_GENERALSTRING] =
+ {ASN1_TAG_GENERALSTRING, ASN1_CLASS_UNIVERSAL, "type:GENERALSTRING"},
+ [ASN1_ETYPE_NUMERIC_STRING] =
+ {ASN1_TAG_NUMERIC_STRING, ASN1_CLASS_UNIVERSAL, "type:NUMERIC_STR"},
+ [ASN1_ETYPE_IA5_STRING] =
+ {ASN1_TAG_IA5_STRING, ASN1_CLASS_UNIVERSAL, "type:IA5_STR"},
+ [ASN1_ETYPE_TELETEX_STRING] =
+ {ASN1_TAG_TELETEX_STRING, ASN1_CLASS_UNIVERSAL, "type:TELETEX_STR"},
+ [ASN1_ETYPE_PRINTABLE_STRING] =
+ {ASN1_TAG_PRINTABLE_STRING, ASN1_CLASS_UNIVERSAL, "type:PRINTABLE_STR"},
+ [ASN1_ETYPE_UNIVERSAL_STRING] =
+ {ASN1_TAG_UNIVERSAL_STRING, ASN1_CLASS_UNIVERSAL, "type:UNIVERSAL_STR"},
+ [ASN1_ETYPE_BMP_STRING] =
+ {ASN1_TAG_BMP_STRING, ASN1_CLASS_UNIVERSAL, "type:BMP_STR"},
+ [ASN1_ETYPE_UTF8_STRING] =
+ {ASN1_TAG_UTF8_STRING, ASN1_CLASS_UNIVERSAL, "type:UTF8_STR"},
+ [ASN1_ETYPE_VISIBLE_STRING] =
+ {ASN1_TAG_VISIBLE_STRING, ASN1_CLASS_UNIVERSAL, "type:VISIBLE_STR"},
+ [ASN1_ETYPE_OCTET_STRING] =
+ {ASN1_TAG_OCTET_STRING, ASN1_CLASS_UNIVERSAL, "type:OCT_STR"},
+ [ASN1_ETYPE_BIT_STRING] =
+ {ASN1_TAG_BIT_STRING, ASN1_CLASS_UNIVERSAL, "type:BIT_STR"},
+ [ASN1_ETYPE_OBJECT_ID] =
+ {ASN1_TAG_OBJECT_ID, ASN1_CLASS_UNIVERSAL, "type:OBJ_ID"},
+ [ASN1_ETYPE_NULL] = {ASN1_TAG_NULL, ASN1_CLASS_UNIVERSAL, "type:NULL"},
+ [ASN1_ETYPE_BOOLEAN] =
+ {ASN1_TAG_BOOLEAN, ASN1_CLASS_UNIVERSAL, "type:BOOLEAN"},
+ [ASN1_ETYPE_INTEGER] =
+ {ASN1_TAG_INTEGER, ASN1_CLASS_UNIVERSAL, "type:INTEGER"},
+ [ASN1_ETYPE_ENUMERATED] =
+ {ASN1_TAG_ENUMERATED, ASN1_CLASS_UNIVERSAL, "type:ENUMERATED"},
+ [ASN1_ETYPE_SEQUENCE] =
+ {ASN1_TAG_SEQUENCE, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+ "type:SEQUENCE"},
+ [ASN1_ETYPE_SEQUENCE_OF] =
+ {ASN1_TAG_SEQUENCE, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+ "type:SEQ_OF"},
+ [ASN1_ETYPE_SET] =
+ {ASN1_TAG_SET, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED, "type:SET"},
+ [ASN1_ETYPE_SET_OF] =
+ {ASN1_TAG_SET, ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED,
+ "type:SET_OF"},
+ [ASN1_ETYPE_GENERALIZED_TIME] =
+ {ASN1_TAG_GENERALIZEDTime, ASN1_CLASS_UNIVERSAL, "type:GENERALIZED_TIME"},
+ [ASN1_ETYPE_UTC_TIME] =
+ {ASN1_TAG_UTCTime, ASN1_CLASS_UNIVERSAL, "type:UTC_TIME"},
+};
+
+unsigned int _asn1_tags_size = sizeof (_asn1_tags) / sizeof (_asn1_tags[0]);
+
+/******************************************************/
+/* Function : _asn1_insert_tag_der */
+/* Description: creates the DER coding of tags of one */
+/* NODE. */
+/* Parameters: */
+/* node: pointer to the tree element. */
+/* der: string returned */
+/* counter: number of meaningful bytes of DER */
+/* (counter[0]..der[*counter-1]). */
+/* max_len: size of der vector */
+/* Return: */
+/* ASN1_GENERIC_ERROR if the type is unknown, */
+/* ASN1_MEM_ERROR if der vector isn't big enough, */
+/* otherwise ASN1_SUCCESS. */
+/******************************************************/
+static int
+_asn1_insert_tag_der (asn1_node node, unsigned char *der, int *counter,
+ int *max_len)
+{
+ asn1_node p;
+ int tag_len, is_tag_implicit;
+ unsigned char class, class_implicit =
+ 0, temp[MAX (SIZEOF_UNSIGNED_INT * 3 + 1, LTOSTR_MAX_SIZE)];
+ unsigned long tag_implicit = 0;
+ unsigned char tag_der[MAX_TAG_LEN];
+
+ is_tag_implicit = 0;
+
+ if (node->type & CONST_TAG)
+ {
+ p = node->down;
+ while (p)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_TAG)
+ {
+ if (p->type & CONST_APPLICATION)
+ class = ASN1_CLASS_APPLICATION;
+ else if (p->type & CONST_UNIVERSAL)
+ class = ASN1_CLASS_UNIVERSAL;
+ else if (p->type & CONST_PRIVATE)
+ class = ASN1_CLASS_PRIVATE;
+ else
+ class = ASN1_CLASS_CONTEXT_SPECIFIC;
+
+ if (p->type & CONST_EXPLICIT)
+ {
+ if (is_tag_implicit)
+ _asn1_tag_der (class_implicit, tag_implicit, tag_der,
+ &tag_len);
+ else
+ _asn1_tag_der (class | ASN1_CLASS_STRUCTURED,
+ _asn1_strtoul (p->value, NULL, 10),
+ tag_der, &tag_len);
+
+ *max_len -= tag_len;
+ if (der && *max_len >= 0)
+ memcpy (der + *counter, tag_der, tag_len);
+ *counter += tag_len;
+
+ _asn1_ltostr (*counter, (char *) temp);
+ _asn1_set_name (p, (const char *) temp);
+
+ is_tag_implicit = 0;
+ }
+ else
+ { /* CONST_IMPLICIT */
+ if (!is_tag_implicit)
+ {
+ if ((type_field (node->type) == ASN1_ETYPE_SEQUENCE) ||
+ (type_field (node->type) == ASN1_ETYPE_SEQUENCE_OF)
+ || (type_field (node->type) == ASN1_ETYPE_SET)
+ || (type_field (node->type) == ASN1_ETYPE_SET_OF))
+ class |= ASN1_CLASS_STRUCTURED;
+ class_implicit = class;
+ tag_implicit = _asn1_strtoul (p->value, NULL, 10);
+ is_tag_implicit = 1;
+ }
+ }
+ }
+ p = p->right;
+ }
+ }
+
+ if (is_tag_implicit)
+ {
+ _asn1_tag_der (class_implicit, tag_implicit, tag_der, &tag_len);
+ }
+ else
+ {
+ unsigned type = type_field (node->type);
+ switch (type)
+ {
+ CASE_HANDLED_ETYPES:
+ _asn1_tag_der (_asn1_tags[type].class, _asn1_tags[type].tag,
+ tag_der, &tag_len);
+ break;
+ case ASN1_ETYPE_TAG:
+ case ASN1_ETYPE_CHOICE:
+ case ASN1_ETYPE_ANY:
+ tag_len = 0;
+ break;
+ default:
+ return ASN1_GENERIC_ERROR;
+ }
+ }
+
+ *max_len -= tag_len;
+ if (der && *max_len >= 0)
+ memcpy (der + *counter, tag_der, tag_len);
+ *counter += tag_len;
+
+ if (*max_len < 0)
+ return ASN1_MEM_ERROR;
+
+ return ASN1_SUCCESS;
+}
+
+/******************************************************/
+/* Function : _asn1_ordering_set */
+/* Description: puts the elements of a SET type in */
+/* the correct order according to DER rules. */
+/* Parameters: */
+/* der: string with the DER coding. */
+/* node: pointer to the SET element. */
+/* Return: */
+/* ASN1_SUCCESS if successful */
+/* or an error value. */
+/******************************************************/
+static int
+_asn1_ordering_set (unsigned char *der, int der_len, asn1_node node)
+{
+ struct vet
+ {
+ int end;
+ unsigned long value;
+ struct vet *next, *prev;
+ };
+
+ int counter, len, len2;
+ struct vet *first, *last, *p_vet, *p2_vet;
+ asn1_node p;
+ unsigned char class, *temp;
+ unsigned long tag, t;
+ int err;
+
+ counter = 0;
+
+ if (type_field (node->type) != ASN1_ETYPE_SET)
+ return ASN1_VALUE_NOT_VALID;
+
+ p = node->down;
+ while (p && ((type_field (p->type) == ASN1_ETYPE_TAG) ||
+ (type_field (p->type) == ASN1_ETYPE_SIZE)))
+ p = p->right;
+
+ if ((p == NULL) || (p->right == NULL))
+ return ASN1_SUCCESS;
+
+ first = last = NULL;
+ while (p)
+ {
+ p_vet = malloc (sizeof (struct vet));
+ if (p_vet == NULL)
+ {
+ err = ASN1_MEM_ALLOC_ERROR;
+ goto error;
+ }
+
+ p_vet->next = NULL;
+ p_vet->prev = last;
+ if (first == NULL)
+ first = p_vet;
+ else
+ last->next = p_vet;
+ last = p_vet;
+
+ /* tag value calculation */
+ err = asn1_get_tag_der (der + counter, der_len - counter, &class, &len2,
+ &tag);
+ if (err != ASN1_SUCCESS)
+ goto error;
+
+ t = ((unsigned int) class) << 24;
+ p_vet->value = t | tag;
+ counter += len2;
+
+ /* extraction and length */
+ len2 = asn1_get_length_der (der + counter, der_len - counter, &len);
+ if (len2 < 0)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ counter += len + len2;
+
+ p_vet->end = counter;
+ p = p->right;
+ }
+
+ p_vet = first;
+
+ while (p_vet)
+ {
+ p2_vet = p_vet->next;
+ counter = 0;
+ while (p2_vet)
+ {
+ if (p_vet->value > p2_vet->value)
+ {
+ /* change position */
+ temp = malloc (p_vet->end - counter);
+ if (temp == NULL)
+ {
+ err = ASN1_MEM_ALLOC_ERROR;
+ goto error;
+ }
+
+ memcpy (temp, der + counter, p_vet->end - counter);
+ memcpy (der + counter, der + p_vet->end,
+ p2_vet->end - p_vet->end);
+ memcpy (der + counter + p2_vet->end - p_vet->end, temp,
+ p_vet->end - counter);
+ free (temp);
+
+ tag = p_vet->value;
+ p_vet->value = p2_vet->value;
+ p2_vet->value = tag;
+
+ p_vet->end = counter + (p2_vet->end - p_vet->end);
+ }
+ counter = p_vet->end;
+
+ p2_vet = p2_vet->next;
+ p_vet = p_vet->next;
+ }
+
+ if (p_vet != first)
+ p_vet->prev->next = NULL;
+ else
+ first = NULL;
+ free (p_vet);
+ p_vet = first;
+ }
+ return ASN1_SUCCESS;
+
+error:
+ while (first != NULL)
+ {
+ p_vet = first;
+ first = first->next;
+ free (p_vet);
+ }
+ return err;
+}
+
+struct vet
+{
+ unsigned char *ptr;
+ int size;
+};
+
+static int
+setof_compar (const void *_e1, const void *_e2)
+{
+ unsigned length;
+ const struct vet *e1 = _e1, *e2 = _e2;
+ int rval;
+
+ /* The encodings of the component values of a set-of value shall
+ * appear in ascending order, the encodings being compared
+ * as octet strings with the shorter components being
+ * padded at their trailing end with 0-octets.
+ * The padding octets are for comparison purposes and
+ * do not appear in the encodings.
+ */
+ length = MIN (e1->size, e2->size);
+
+ rval = memcmp (e1->ptr, e2->ptr, length);
+ if (rval == 0 && e1->size != e2->size)
+ {
+ if (e1->size > e2->size)
+ rval = 1;
+ else if (e2->size > e1->size)
+ rval = -1;
+ }
+
+ return rval;
+}
+
+/******************************************************/
+/* Function : _asn1_ordering_set_of */
+/* Description: puts the elements of a SET OF type in */
+/* the correct order according to DER rules. */
+/* Parameters: */
+/* der: string with the DER coding. */
+/* node: pointer to the SET OF element. */
+/* Return: */
+/* ASN1_SUCCESS if successful */
+/* or an error value. */
+/******************************************************/
+static int
+_asn1_ordering_set_of (unsigned char *der, int der_len, asn1_node node)
+{
+ int counter, len, len2;
+ struct vet *list = NULL, *tlist;
+ unsigned list_size = 0;
+ struct vet *p_vet;
+ asn1_node p;
+ unsigned char class;
+ unsigned i;
+ unsigned char *out = NULL;
+ int err;
+
+ counter = 0;
+
+ if (type_field (node->type) != ASN1_ETYPE_SET_OF)
+ return ASN1_VALUE_NOT_VALID;
+
+ p = node->down;
+ while (p && ((type_field (p->type) == ASN1_ETYPE_TAG) ||
+ (type_field (p->type) == ASN1_ETYPE_SIZE)))
+ p = p->right;
+ if (p == NULL)
+ return ASN1_VALUE_NOT_VALID;
+ p = p->right;
+
+ if ((p == NULL) || (p->right == NULL))
+ return ASN1_SUCCESS;
+
+ while (p)
+ {
+ list_size++;
+ tlist = realloc (list, list_size * sizeof (struct vet));
+ if (tlist == NULL)
+ {
+ err = ASN1_MEM_ALLOC_ERROR;
+ goto error;
+ }
+ list = tlist;
+ p_vet = &list[list_size - 1];
+
+ p_vet->ptr = der + counter;
+ p_vet->size = 0;
+
+ /* extraction of tag and length */
+ if (der_len - counter > 0)
+ {
+ err = asn1_get_tag_der (der + counter, der_len - counter, &class,
+ &len, NULL);
+ if (err != ASN1_SUCCESS)
+ goto error;
+ counter += len;
+ p_vet->size += len;
+
+ len2 = asn1_get_length_der (der + counter, der_len - counter, &len);
+ if (len2 < 0)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ counter += len + len2;
+ p_vet->size += len + len2;
+
+ }
+ else
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ p = p->right;
+ }
+
+ if (counter > der_len)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+
+ qsort (list, list_size, sizeof (struct vet), setof_compar);
+
+ out = malloc (der_len);
+ if (out == NULL)
+ {
+ err = ASN1_MEM_ERROR;
+ goto error;
+ }
+
+ /* the sum of p_vet->size == der_len */
+ counter = 0;
+ for (i = 0; i < list_size; i++)
+ {
+ p_vet = &list[i];
+ memcpy (out + counter, p_vet->ptr, p_vet->size);
+ counter += p_vet->size;
+ }
+ memcpy (der, out, der_len);
+ free (out);
+
+ err = ASN1_SUCCESS;
+
+error:
+ free (list);
+ return err;
+}
+
+/**
+ * asn1_der_coding:
+ * @element: pointer to an ASN1 element
+ * @name: the name of the structure you want to encode (it must be
+ * inside *POINTER).
+ * @ider: vector that will contain the DER encoding. DER must be a
+ * pointer to memory cells already allocated.
+ * @len: number of bytes of *@ider: @ider[0]..@ider[len-1], Initialy
+ * holds the sizeof of der vector.
+ * @ErrorDescription: return the error description or an empty
+ * string if success.
+ *
+ * Creates the DER encoding for the NAME structure (inside *POINTER
+ * structure).
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ * if @name is not a valid element, %ASN1_VALUE_NOT_FOUND if there
+ * is an element without a value, %ASN1_MEM_ERROR if the @ider
+ * vector isn't big enough and in this case @len will contain the
+ * length needed.
+ **/
+int
+asn1_der_coding (asn1_node_const element, const char *name, void *ider,
+ int *len, char *ErrorDescription)
+{
+ asn1_node node, p, p2;
+ unsigned char temp[MAX (LTOSTR_MAX_SIZE, SIZEOF_UNSIGNED_LONG_INT * 3 + 1)];
+ int counter, counter_old, len2, len3, move, max_len, max_len_old;
+ int err;
+ unsigned char *der = ider;
+ unsigned char dummy;
+
+ if (ErrorDescription)
+ ErrorDescription[0] = 0;
+
+ node = asn1_find_node (element, name);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ /* Node is now a locally allocated variable.
+ * That is because in some point we modify the
+ * structure, and I don't know why! --nmav
+ */
+ node = _asn1_copy_structure3 (node);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ max_len = *len;
+
+ if (der == NULL && max_len > 0)
+ {
+ err = ASN1_VALUE_NOT_VALID;
+ goto error;
+ }
+
+ counter = 0;
+ move = DOWN;
+ p = node;
+
+ while (1)
+ {
+
+ counter_old = counter;
+ max_len_old = max_len;
+ if (move != UP)
+ {
+ p->start = counter;
+ err = _asn1_insert_tag_der (p, der, &counter, &max_len);
+ if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+ goto error;
+ }
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_NULL:
+ max_len--;
+ if (der != NULL && max_len >= 0)
+ der[counter] = 0;
+ counter++;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_BOOLEAN:
+ if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+ {
+ counter = counter_old;
+ max_len = max_len_old;
+ }
+ else
+ {
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p,
+ ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ max_len -= 2;
+ if (der != NULL && max_len >= 0)
+ {
+ der[counter++] = 1;
+ if (p->value[0] == 'F')
+ der[counter++] = 0;
+ else
+ der[counter++] = 0xFF;
+ }
+ else
+ counter += 2;
+ }
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_INTEGER:
+ case ASN1_ETYPE_ENUMERATED:
+ if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+ {
+ counter = counter_old;
+ max_len = max_len_old;
+ }
+ else
+ {
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p,
+ ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+ if (len2 < 0)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ max_len -= len2 + len3;
+ if (der != NULL && max_len >= 0)
+ memcpy (der + counter, p->value, len3 + len2);
+ counter += len3 + len2;
+ }
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_OBJECT_ID:
+ if ((p->type & CONST_DEFAULT) && (p->value == NULL))
+ {
+ counter = counter_old;
+ max_len = max_len_old;
+ }
+ else
+ {
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p,
+ ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ len2 = max_len;
+ err =
+ _asn1_object_id_der ((char *) p->value,
+ der ? der + counter : &dummy, &len2);
+ if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+ goto error;
+
+ max_len -= len2;
+ counter += len2;
+ }
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ case ASN1_ETYPE_UTC_TIME:
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p, ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ len2 = max_len;
+ err =
+ _asn1_time_der (p->value, p->value_len,
+ der ? der + counter : &dummy, &len2);
+ if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+ goto error;
+
+ max_len -= len2;
+ counter += len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_OCTET_STRING:
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ case ASN1_ETYPE_BIT_STRING:
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p, ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+ if (len2 < 0)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ max_len -= len2 + len3;
+ if (der != NULL && max_len >= 0)
+ memcpy (der + counter, p->value, len3 + len2);
+ counter += len3 + len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_SEQUENCE:
+ case ASN1_ETYPE_SET:
+ if (move != UP)
+ {
+ p->tmp_ival = counter;
+ if (p->down == NULL)
+ {
+ move = UP;
+ continue;
+ }
+ else
+ {
+ p2 = p->down;
+ while (p2 && (type_field (p2->type) == ASN1_ETYPE_TAG))
+ p2 = p2->right;
+ if (p2)
+ {
+ p = p2;
+ move = RIGHT;
+ continue;
+ }
+ move = UP;
+ continue;
+ }
+ }
+ else
+ { /* move==UP */
+ len2 = p->tmp_ival;
+ p->tmp_ival = 0;
+ if ((type_field (p->type) == ASN1_ETYPE_SET) && (max_len >= 0))
+ {
+ err =
+ _asn1_ordering_set (der ? der + len2 : &dummy,
+ counter - len2, p);
+ if (err != ASN1_SUCCESS)
+ goto error;
+ }
+ asn1_length_der (counter - len2, temp, &len3);
+ max_len -= len3;
+ if (der != NULL && max_len >= 0)
+ {
+ memmove (der + len2 + len3, der + len2, counter - len2);
+ memcpy (der + len2, temp, len3);
+ }
+ counter += len3;
+ move = RIGHT;
+ }
+ break;
+ case ASN1_ETYPE_SEQUENCE_OF:
+ case ASN1_ETYPE_SET_OF:
+ if (move != UP)
+ {
+ p->tmp_ival = counter;
+ p = p->down;
+ while ((type_field (p->type) == ASN1_ETYPE_TAG)
+ || (type_field (p->type) == ASN1_ETYPE_SIZE))
+ p = p->right;
+ if (p->right)
+ {
+ p = p->right;
+ move = RIGHT;
+ continue;
+ }
+ else
+ p = _asn1_find_up (p);
+ move = UP;
+ }
+ if (move == UP)
+ {
+ len2 = p->tmp_ival;
+ p->tmp_ival = 0;
+ if ((type_field (p->type) == ASN1_ETYPE_SET_OF)
+ && (counter - len2 > 0) && (max_len >= 0))
+ {
+ err =
+ _asn1_ordering_set_of (der ? der + len2 : &dummy,
+ counter - len2, p);
+ if (err != ASN1_SUCCESS)
+ goto error;
+ }
+ asn1_length_der (counter - len2, temp, &len3);
+ max_len -= len3;
+ if (der != NULL && max_len >= 0)
+ {
+ memmove (der + len2 + len3, der + len2, counter - len2);
+ memcpy (der + len2, temp, len3);
+ }
+ counter += len3;
+ move = RIGHT;
+ }
+ break;
+ case ASN1_ETYPE_ANY:
+ if (p->value == NULL)
+ {
+ _asn1_error_description_value_not_found (p, ErrorDescription);
+ err = ASN1_VALUE_NOT_FOUND;
+ goto error;
+ }
+ len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+ if (len2 < 0)
+ {
+ err = ASN1_DER_ERROR;
+ goto error;
+ }
+ max_len -= len2;
+ if (der != NULL && max_len >= 0)
+ memcpy (der + counter, p->value + len3, len2);
+ counter += len2;
+ move = RIGHT;
+ break;
+ default:
+ move = (move == UP) ? RIGHT : DOWN;
+ break;
+ }
+
+ if ((move != DOWN) && (counter != counter_old))
+ {
+ p->end = counter - 1;
+ err = _asn1_complete_explicit_tag (p, der, &counter, &max_len);
+ if (err != ASN1_SUCCESS && err != ASN1_MEM_ERROR)
+ goto error;
+ }
+
+ if (p == node && move != DOWN)
+ break;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+ if (move == RIGHT)
+ {
+ if (p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ *len = counter;
+
+ if (max_len < 0)
+ {
+ err = ASN1_MEM_ERROR;
+ goto error;
+ }
+
+ err = ASN1_SUCCESS;
+
+error:
+ asn1_delete_structure (&node);
+ return err;
+}
diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
new file mode 100644
index 000000000..b9245c486
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/decoding.c
@@ -0,0 +1,2501 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: decoding.c */
+/* Description: Functions to manage DER decoding */
+/*****************************************************/
+
+#include <int.h>
+#include <parser_aux.h>
+#include <gstr.h>
+#include <structure.h>
+#include <element.h>
+#include <limits.h>
+#include <intprops.h>
+#include "c-ctype.h"
+
+#ifdef DEBUG
+# define warn() fprintf(stderr, "%s: %d\n", __func__, __LINE__)
+#else
+# define warn()
+#endif
+
+#define IS_ERR(len, flags) (len < -1 || ((flags & ASN1_DECODE_FLAG_STRICT_DER) && len < 0))
+
+#define HAVE_TWO(x) (x>=2?1:0)
+
+/* Decoding flags (dflags) used in several decoding functions.
+ * DECODE_FLAG_HAVE_TAG: The provided buffer includes a tag
+ * DECODE_FLAG_CONSTRUCTED: The provided buffer is of indefinite encoding (useful
+ * when no tags are present).
+ * DECODE_FLAG_LEVEL1: Internal flag to indicate a level of recursion for BER strings.
+ * DECODE_FLAG_LEVEL2: Internal flag to indicate two levels of recursion for BER strings.
+ * DECODE_FLAG_LEVEL3: Internal flag to indicate three levels of recursion for BER strings.
+ * This is the maximum levels of recursion possible to prevent stack
+ * exhaustion.
+ */
+
+#define DECODE_FLAG_HAVE_TAG 1
+#define DECODE_FLAG_CONSTRUCTED (1<<1)
+#define DECODE_FLAG_LEVEL1 (1<<2)
+#define DECODE_FLAG_LEVEL2 (1<<3)
+#define DECODE_FLAG_LEVEL3 (1<<4)
+
+#define DECR_LEN(l, s) do { \
+ l -= s; \
+ if (l < 0) { \
+ warn(); \
+ result = ASN1_DER_ERROR; \
+ goto cleanup; \
+ } \
+ } while (0)
+
+static int
+_asn1_get_indefinite_length_string (const unsigned char *der, int der_len,
+ int *len);
+
+static int
+_asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, unsigned char **str,
+ unsigned int *str_len, unsigned int *ber_len,
+ unsigned dflags);
+
+static int
+_asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, const unsigned char **str,
+ unsigned int *str_len, unsigned dflags);
+
+static void
+_asn1_error_description_tag_error (asn1_node node, char *ErrorDescription)
+{
+
+ Estrcpy (ErrorDescription, ":: tag error near element '");
+ _asn1_hierarchical_name (node, ErrorDescription + strlen (ErrorDescription),
+ ASN1_MAX_ERROR_DESCRIPTION_SIZE - 40);
+ Estrcat (ErrorDescription, "'");
+
+}
+
+/**
+ * asn1_get_length_der:
+ * @der: DER data to decode.
+ * @der_len: Length of DER data to decode.
+ * @len: Output variable containing the length of the DER length field.
+ *
+ * Extract a length field from DER data.
+ *
+ * Returns: Return the decoded length value, or -1 on indefinite
+ * length, or -2 when the value was too big to fit in a int, or -4
+ * when the decoded length value plus @len would exceed @der_len.
+ **/
+long
+asn1_get_length_der (const unsigned char *der, int der_len, int *len)
+{
+ unsigned int ans;
+ int k, punt, sum;
+
+ *len = 0;
+ if (der_len <= 0)
+ return 0;
+
+ if (!(der[0] & 128))
+ {
+ /* short form */
+ *len = 1;
+ ans = der[0];
+ }
+ else
+ {
+ /* Long form */
+ k = der[0] & 0x7F;
+ punt = 1;
+ if (k)
+ { /* definite length method */
+ ans = 0;
+ while (punt <= k && punt < der_len)
+ {
+ if (INT_MULTIPLY_OVERFLOW (ans, 256))
+ return -2;
+ ans *= 256;
+
+ if (INT_ADD_OVERFLOW (ans, ((unsigned) der[punt])))
+ return -2;
+ ans += der[punt];
+ punt++;
+ }
+ }
+ else
+ { /* indefinite length method */
+ *len = punt;
+ return -1;
+ }
+
+ *len = punt;
+ }
+
+ sum = ans;
+ if (ans >= INT_MAX || INT_ADD_OVERFLOW (sum, (*len)))
+ return -2;
+ sum += *len;
+
+ if (sum > der_len)
+ return -4;
+
+ return ans;
+}
+
+/**
+ * asn1_get_tag_der:
+ * @der: DER data to decode.
+ * @der_len: Length of DER data to decode.
+ * @cls: Output variable containing decoded class.
+ * @len: Output variable containing the length of the DER TAG data.
+ * @tag: Output variable containing the decoded tag (may be %NULL).
+ *
+ * Decode the class and TAG from DER code.
+ *
+ * Returns: Returns %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_tag_der (const unsigned char *der, int der_len,
+ unsigned char *cls, int *len, unsigned long *tag)
+{
+ unsigned int ris;
+ int punt;
+
+ if (der == NULL || der_len < 2 || len == NULL)
+ return ASN1_DER_ERROR;
+
+ *cls = der[0] & 0xE0;
+ if ((der[0] & 0x1F) != 0x1F)
+ {
+ /* short form */
+ *len = 1;
+ ris = der[0] & 0x1F;
+ }
+ else
+ {
+ /* Long form */
+ punt = 1;
+ ris = 0;
+ while (punt < der_len && der[punt] & 128)
+ {
+
+ if (INT_MULTIPLY_OVERFLOW (ris, 128))
+ return ASN1_DER_ERROR;
+ ris *= 128;
+
+ if (INT_ADD_OVERFLOW (ris, ((unsigned) (der[punt] & 0x7F))))
+ return ASN1_DER_ERROR;
+ ris += (der[punt] & 0x7F);
+ punt++;
+ }
+
+ if (punt >= der_len)
+ return ASN1_DER_ERROR;
+
+ if (INT_MULTIPLY_OVERFLOW (ris, 128))
+ return ASN1_DER_ERROR;
+ ris *= 128;
+
+ if (INT_ADD_OVERFLOW (ris, ((unsigned) (der[punt] & 0x7F))))
+ return ASN1_DER_ERROR;
+ ris += (der[punt] & 0x7F);
+ punt++;
+
+ *len = punt;
+ }
+
+ if (tag)
+ *tag = ris;
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_length_ber:
+ * @ber: BER data to decode.
+ * @ber_len: Length of BER data to decode.
+ * @len: Output variable containing the length of the BER length field.
+ *
+ * Extract a length field from BER data. The difference to
+ * asn1_get_length_der() is that this function will return a length
+ * even if the value has indefinite encoding.
+ *
+ * Returns: Return the decoded length value, or negative value when
+ * the value was too big.
+ *
+ * Since: 2.0
+ **/
+long
+asn1_get_length_ber (const unsigned char *ber, int ber_len, int *len)
+{
+ int ret;
+ long err;
+
+ ret = asn1_get_length_der (ber, ber_len, len);
+
+ if (ret == -1 && ber_len > 1)
+ { /* indefinite length method */
+ err = _asn1_get_indefinite_length_string (ber + 1, ber_len - 1, &ret);
+ if (err != ASN1_SUCCESS)
+ return -3;
+ }
+
+ return ret;
+}
+
+/**
+ * asn1_get_octet_der:
+ * @der: DER data to decode containing the OCTET SEQUENCE.
+ * @der_len: The length of the @der data to decode.
+ * @ret_len: Output variable containing the encoded length of the DER data.
+ * @str: Pre-allocated output buffer to put decoded OCTET SEQUENCE in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @str_len: Output variable containing the length of the contents of the OCTET SEQUENCE.
+ *
+ * Extract an OCTET SEQUENCE from DER data. Note that this function
+ * expects the DER data past the tag field, i.e., the length and
+ * content octets.
+ *
+ * Returns: Returns %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_octet_der (const unsigned char *der, int der_len,
+ int *ret_len, unsigned char *str, int str_size,
+ int *str_len)
+{
+ int len_len = 0;
+
+ if (der_len <= 0)
+ return ASN1_GENERIC_ERROR;
+
+ *str_len = asn1_get_length_der (der, der_len, &len_len);
+
+ if (*str_len < 0)
+ return ASN1_DER_ERROR;
+
+ *ret_len = *str_len + len_len;
+ if (str_size >= *str_len)
+ {
+ if (*str_len > 0 && str != NULL)
+ memcpy (str, der + len_len, *str_len);
+ }
+ else
+ {
+ return ASN1_MEM_ERROR;
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/*-
+ * _asn1_get_time_der:
+ * @type: %ASN1_ETYPE_GENERALIZED_TIME or %ASN1_ETYPE_UTC_TIME
+ * @der: DER data to decode containing the time
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put the textual time in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @flags: Zero or %ASN1_DECODE_FLAG_STRICT_DER
+ *
+ * Performs basic checks in the DER encoded time object and returns its textual form.
+ * The textual form will be in the YYYYMMDD000000Z format for GeneralizedTime
+ * and YYMMDD000000Z for UTCTime.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ -*/
+static int
+_asn1_get_time_der (unsigned type, const unsigned char *der, int der_len,
+ int *ret_len, char *str, int str_size, unsigned flags)
+{
+ int len_len, str_len;
+ unsigned i;
+ unsigned sign_count = 0;
+ unsigned dot_count = 0;
+ const unsigned char *p;
+
+ if (der_len <= 0 || str == NULL)
+ return ASN1_DER_ERROR;
+
+ str_len = asn1_get_length_der (der, der_len, &len_len);
+ if (str_len <= 0 || str_size < str_len)
+ return ASN1_DER_ERROR;
+
+ /* perform some sanity checks on the data */
+ if (str_len < 8)
+ {
+ warn ();
+ return ASN1_TIME_ENCODING_ERROR;
+ }
+
+ if ((flags & ASN1_DECODE_FLAG_STRICT_DER)
+ && !(flags & ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME))
+ {
+ p = &der[len_len];
+ for (i = 0; i < (unsigned) (str_len - 1); i++)
+ {
+ if (c_isdigit (p[i]) == 0)
+ {
+ if (type == ASN1_ETYPE_GENERALIZED_TIME)
+ {
+ /* tolerate lax encodings */
+ if (p[i] == '.' && dot_count == 0)
+ {
+ dot_count++;
+ continue;
+ }
+
+ /* This is not really valid DER, but there are
+ * structures using that */
+ if (!(flags & ASN1_DECODE_FLAG_STRICT_DER) &&
+ (p[i] == '+' || p[i] == '-') && sign_count == 0)
+ {
+ sign_count++;
+ continue;
+ }
+ }
+
+ warn ();
+ return ASN1_TIME_ENCODING_ERROR;
+ }
+ }
+
+ if (sign_count == 0 && p[str_len - 1] != 'Z')
+ {
+ warn ();
+ return ASN1_TIME_ENCODING_ERROR;
+ }
+ }
+ memcpy (str, der + len_len, str_len);
+ str[str_len] = 0;
+ *ret_len = str_len + len_len;
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_object_id_der:
+ * @der: DER data to decode containing the OBJECT IDENTIFIER
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put the textual object id in.
+ * @str_size: Length of pre-allocated output buffer.
+ *
+ * Converts a DER encoded object identifier to its textual form. This
+ * function expects the DER object identifier without the tag.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_object_id_der (const unsigned char *der, int der_len, int *ret_len,
+ char *str, int str_size)
+{
+ int len_len, len, k;
+ int leading, parsed;
+ char temp[LTOSTR_MAX_SIZE];
+ uint64_t val, val1, val0;
+
+ *ret_len = 0;
+ if (str && str_size > 0)
+ str[0] = 0; /* no oid */
+
+ if (str == NULL || der_len <= 0)
+ return ASN1_GENERIC_ERROR;
+
+ len = asn1_get_length_der (der, der_len, &len_len);
+
+ if (len <= 0 || len + len_len > der_len)
+ return ASN1_DER_ERROR;
+
+ /* leading octet can never be 0x80 */
+ if (der[len_len] == 0x80)
+ return ASN1_DER_ERROR;
+
+ val0 = 0;
+
+ for (k = 0; k < len; k++)
+ {
+ if (INT_LEFT_SHIFT_OVERFLOW (val0, 7))
+ return ASN1_DER_ERROR;
+
+ val0 <<= 7;
+ val0 |= der[len_len + k] & 0x7F;
+ if (!(der[len_len + k] & 0x80))
+ break;
+ }
+ parsed = ++k;
+
+ /* val0 = (X*40) + Y, X={0,1,2}, Y<=39 when X={0,1} */
+ /* X = val, Y = val1 */
+
+ /* check if X == 0 */
+ val = 0;
+ val1 = val0;
+ if (val1 > 39)
+ {
+ val = 1;
+ val1 = val0 - 40;
+ if (val1 > 39)
+ {
+ val = 2;
+ val1 = val0 - 80;
+ }
+ }
+
+ _asn1_str_cpy (str, str_size, _asn1_ltostr (val, temp));
+ _asn1_str_cat (str, str_size, ".");
+ _asn1_str_cat (str, str_size, _asn1_ltostr (val1, temp));
+
+ val = 0;
+ leading = 1;
+ for (k = parsed; k < len; k++)
+ {
+ /* X.690 mandates that the leading byte must never be 0x80
+ */
+ if (leading != 0 && der[len_len + k] == 0x80)
+ return ASN1_DER_ERROR;
+ leading = 0;
+
+ /* check for wrap around */
+ if (INT_LEFT_SHIFT_OVERFLOW (val, 7))
+ return ASN1_DER_ERROR;
+
+ val = val << 7;
+ val |= der[len_len + k] & 0x7F;
+
+ if (!(der[len_len + k] & 0x80))
+ {
+ _asn1_str_cat (str, str_size, ".");
+ _asn1_str_cat (str, str_size, _asn1_ltostr (val, temp));
+ val = 0;
+ leading = 1;
+ }
+ }
+
+ if (INT_ADD_OVERFLOW (len, len_len))
+ return ASN1_DER_ERROR;
+
+ *ret_len = len + len_len;
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_get_bit_der:
+ * @der: DER data to decode containing the BIT SEQUENCE.
+ * @der_len: Length of DER data to decode.
+ * @ret_len: Output variable containing the length of the DER data.
+ * @str: Pre-allocated output buffer to put decoded BIT SEQUENCE in.
+ * @str_size: Length of pre-allocated output buffer.
+ * @bit_len: Output variable containing the size of the BIT SEQUENCE.
+ *
+ * Extract a BIT SEQUENCE from DER data.
+ *
+ * Returns: %ASN1_SUCCESS on success, or an error.
+ **/
+int
+asn1_get_bit_der (const unsigned char *der, int der_len,
+ int *ret_len, unsigned char *str, int str_size,
+ int *bit_len)
+{
+ int len_len = 0, len_byte;
+
+ if (der_len <= 0)
+ return ASN1_GENERIC_ERROR;
+
+ len_byte = asn1_get_length_der (der, der_len, &len_len) - 1;
+ if (len_byte < 0)
+ return ASN1_DER_ERROR;
+
+ *ret_len = len_byte + len_len + 1;
+ *bit_len = len_byte * 8 - der[len_len];
+
+ if (*bit_len < 0)
+ return ASN1_DER_ERROR;
+
+ if (str_size >= len_byte)
+ {
+ if (len_byte > 0 && str)
+ memcpy (str, der + len_len + 1, len_byte);
+ }
+ else
+ {
+ return ASN1_MEM_ERROR;
+ }
+
+ return ASN1_SUCCESS;
+}
+
+/* tag_len: the total tag length (explicit+inner)
+ * inner_tag_len: the inner_tag length
+ */
+static int
+_asn1_extract_tag_der (asn1_node node, const unsigned char *der, int der_len,
+ int *tag_len, int *inner_tag_len, unsigned flags)
+{
+ asn1_node p;
+ int counter, len2, len3, is_tag_implicit;
+ int result;
+ unsigned long tag, tag_implicit = 0;
+ unsigned char class, class2, class_implicit = 0;
+
+ if (der_len <= 0)
+ return ASN1_GENERIC_ERROR;
+
+ counter = is_tag_implicit = 0;
+
+ if (node->type & CONST_TAG)
+ {
+ p = node->down;
+ while (p)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_TAG)
+ {
+ if (p->type & CONST_APPLICATION)
+ class2 = ASN1_CLASS_APPLICATION;
+ else if (p->type & CONST_UNIVERSAL)
+ class2 = ASN1_CLASS_UNIVERSAL;
+ else if (p->type & CONST_PRIVATE)
+ class2 = ASN1_CLASS_PRIVATE;
+ else
+ class2 = ASN1_CLASS_CONTEXT_SPECIFIC;
+
+ if (p->type & CONST_EXPLICIT)
+ {
+ if (asn1_get_tag_der
+ (der + counter, der_len, &class, &len2,
+ &tag) != ASN1_SUCCESS)
+ return ASN1_DER_ERROR;
+
+ DECR_LEN (der_len, len2);
+ counter += len2;
+
+ if (flags & ASN1_DECODE_FLAG_STRICT_DER)
+ len3 =
+ asn1_get_length_der (der + counter, der_len, &len2);
+ else
+ len3 =
+ asn1_get_length_ber (der + counter, der_len, &len2);
+ if (len3 < 0)
+ return ASN1_DER_ERROR;
+
+ DECR_LEN (der_len, len2);
+ counter += len2;
+
+ if (!is_tag_implicit)
+ {
+ if ((class != (class2 | ASN1_CLASS_STRUCTURED)) ||
+ (tag != strtoul ((char *) p->value, NULL, 10)))
+ return ASN1_TAG_ERROR;
+ }
+ else
+ { /* ASN1_TAG_IMPLICIT */
+ if ((class != class_implicit) || (tag != tag_implicit))
+ return ASN1_TAG_ERROR;
+ }
+ is_tag_implicit = 0;
+ }
+ else
+ { /* ASN1_TAG_IMPLICIT */
+ if (!is_tag_implicit)
+ {
+ if ((type_field (node->type) == ASN1_ETYPE_SEQUENCE) ||
+ (type_field (node->type) == ASN1_ETYPE_SEQUENCE_OF)
+ || (type_field (node->type) == ASN1_ETYPE_SET)
+ || (type_field (node->type) == ASN1_ETYPE_SET_OF))
+ class2 |= ASN1_CLASS_STRUCTURED;
+ class_implicit = class2;
+ tag_implicit = strtoul ((char *) p->value, NULL, 10);
+ is_tag_implicit = 1;
+ }
+ }
+ }
+ p = p->right;
+ }
+ }
+
+ if (is_tag_implicit)
+ {
+ if (asn1_get_tag_der
+ (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+ return ASN1_DER_ERROR;
+
+ DECR_LEN (der_len, len2);
+
+ if ((class != class_implicit) || (tag != tag_implicit))
+ {
+ if (type_field (node->type) == ASN1_ETYPE_OCTET_STRING)
+ {
+ class_implicit |= ASN1_CLASS_STRUCTURED;
+ if ((class != class_implicit) || (tag != tag_implicit))
+ return ASN1_TAG_ERROR;
+ }
+ else
+ return ASN1_TAG_ERROR;
+ }
+ }
+ else
+ {
+ unsigned type = type_field (node->type);
+ if (type == ASN1_ETYPE_TAG)
+ {
+ *tag_len = 0;
+ if (inner_tag_len)
+ *inner_tag_len = 0;
+ return ASN1_SUCCESS;
+ }
+
+ if (asn1_get_tag_der
+ (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+ return ASN1_DER_ERROR;
+
+ DECR_LEN (der_len, len2);
+
+ switch (type)
+ {
+ case ASN1_ETYPE_NULL:
+ case ASN1_ETYPE_BOOLEAN:
+ case ASN1_ETYPE_INTEGER:
+ case ASN1_ETYPE_ENUMERATED:
+ case ASN1_ETYPE_OBJECT_ID:
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ case ASN1_ETYPE_BIT_STRING:
+ case ASN1_ETYPE_SEQUENCE:
+ case ASN1_ETYPE_SEQUENCE_OF:
+ case ASN1_ETYPE_SET:
+ case ASN1_ETYPE_SET_OF:
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ case ASN1_ETYPE_UTC_TIME:
+ if ((class != _asn1_tags[type].class)
+ || (tag != _asn1_tags[type].tag))
+ return ASN1_DER_ERROR;
+ break;
+
+ case ASN1_ETYPE_OCTET_STRING:
+ /* OCTET STRING is handled differently to allow
+ * BER encodings (structured class). */
+ if (((class != ASN1_CLASS_UNIVERSAL)
+ && (class != (ASN1_CLASS_UNIVERSAL | ASN1_CLASS_STRUCTURED)))
+ || (tag != ASN1_TAG_OCTET_STRING))
+ return ASN1_DER_ERROR;
+ break;
+ case ASN1_ETYPE_ANY:
+ counter -= len2;
+ break;
+ case ASN1_ETYPE_CHOICE:
+ counter -= len2;
+ break;
+ default:
+ return ASN1_DER_ERROR;
+ break;
+ }
+ }
+
+ counter += len2;
+ *tag_len = counter;
+ if (inner_tag_len)
+ *inner_tag_len = len2;
+ return ASN1_SUCCESS;
+
+cleanup:
+ return result;
+}
+
+static int
+extract_tag_der_recursive (asn1_node node, const unsigned char *der,
+ int der_len, int *ret_len, int *inner_len,
+ unsigned flags)
+{
+ asn1_node p;
+ int ris = ASN1_DER_ERROR;
+
+ if (type_field (node->type) == ASN1_ETYPE_CHOICE)
+ {
+ p = node->down;
+ while (p)
+ {
+ ris =
+ _asn1_extract_tag_der (p, der, der_len, ret_len, inner_len,
+ flags);
+ if (ris == ASN1_SUCCESS)
+ break;
+ p = p->right;
+ }
+
+ *ret_len = 0;
+ return ris;
+ }
+ else
+ return _asn1_extract_tag_der (node, der, der_len, ret_len, inner_len,
+ flags);
+}
+
+static int
+_asn1_delete_not_used (asn1_node node)
+{
+ asn1_node p, p2;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ while (p)
+ {
+ if (p->type & CONST_NOT_USED)
+ {
+ p2 = NULL;
+ if (p != node)
+ {
+ p2 = _asn1_find_left (p);
+ if (!p2)
+ p2 = _asn1_find_up (p);
+ }
+ asn1_delete_structure (&p);
+ p = p2;
+ }
+
+ if (!p)
+ break; /* reach node */
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else
+ {
+ if (p == node)
+ p = NULL;
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == node)
+ {
+ p = NULL;
+ break;
+ }
+ if (p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+ }
+ return ASN1_SUCCESS;
+}
+
+static int
+_asn1_get_indefinite_length_string (const unsigned char *der,
+ int der_len, int *len)
+{
+ int len2, len3, counter, indefinite;
+ int result;
+ unsigned long tag;
+ unsigned char class;
+
+ counter = indefinite = 0;
+
+ while (1)
+ {
+ if (HAVE_TWO (der_len) && (der[counter] == 0)
+ && (der[counter + 1] == 0))
+ {
+ counter += 2;
+ DECR_LEN (der_len, 2);
+
+ indefinite--;
+ if (indefinite <= 0)
+ break;
+ else
+ continue;
+ }
+
+ if (asn1_get_tag_der
+ (der + counter, der_len, &class, &len2, &tag) != ASN1_SUCCESS)
+ return ASN1_DER_ERROR;
+
+ DECR_LEN (der_len, len2);
+ counter += len2;
+
+ len2 = asn1_get_length_der (der + counter, der_len, &len3);
+ if (len2 < -1)
+ return ASN1_DER_ERROR;
+
+ if (len2 == -1)
+ {
+ indefinite++;
+ counter += 1;
+ DECR_LEN (der_len, 1);
+ }
+ else
+ {
+ counter += len2 + len3;
+ DECR_LEN (der_len, len2 + len3);
+ }
+ }
+
+ *len = counter;
+ return ASN1_SUCCESS;
+
+cleanup:
+ return result;
+}
+
+static void
+delete_unneeded_choice_fields (asn1_node p)
+{
+ asn1_node p2;
+
+ while (p->right)
+ {
+ p2 = p->right;
+ asn1_delete_structure (&p2);
+ }
+}
+
+
+/**
+ * asn1_der_decoding2
+ * @element: pointer to an ASN1 structure.
+ * @ider: vector that contains the DER encoding.
+ * @max_ider_len: pointer to an integer giving the information about the
+ * maximal number of bytes occupied by *@ider. The real size of the DER
+ * encoding is returned through this pointer.
+ * @flags: flags controlling the behaviour of the function.
+ * @errorDescription: null-terminated string contains details when an
+ * error occurred.
+ *
+ * Fill the structure *@element with values of a DER encoding string. The
+ * structure must just be created with function asn1_create_element().
+ *
+ * If %ASN1_DECODE_FLAG_ALLOW_PADDING flag is set then the function will ignore
+ * padding after the decoded DER data. Upon a successful return the value of
+ * *@max_ider_len will be set to the number of bytes decoded.
+ *
+ * If %ASN1_DECODE_FLAG_STRICT_DER flag is set then the function will
+ * not decode any BER-encoded elements.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ * if @ELEMENT is %NULL, and %ASN1_TAG_ERROR or
+ * %ASN1_DER_ERROR if the der encoding doesn't match the structure
+ * name (*@ELEMENT deleted).
+ **/
+int
+asn1_der_decoding2 (asn1_node * element, const void *ider, int *max_ider_len,
+ unsigned int flags, char *errorDescription)
+{
+ asn1_node node, p, p2, p3;
+ char temp[128];
+ int counter, len2, len3, len4, move, ris, tlen;
+ struct node_tail_cache_st tcache = { NULL, NULL };
+ unsigned char class;
+ unsigned long tag;
+ int tag_len;
+ int indefinite, result, total_len = *max_ider_len, ider_len = *max_ider_len;
+ int inner_tag_len;
+ unsigned char *ptmp;
+ const unsigned char *ptag;
+ const unsigned char *der = ider;
+
+ node = *element;
+
+ if (errorDescription != NULL)
+ errorDescription[0] = 0;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ if (node->type & CONST_OPTION)
+ {
+ result = ASN1_GENERIC_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ counter = 0;
+ move = DOWN;
+ p = node;
+ while (1)
+ {
+ tag_len = 0;
+ inner_tag_len = 0;
+ ris = ASN1_SUCCESS;
+ if (move != UP)
+ {
+ if (p->type & CONST_SET)
+ {
+ p2 = _asn1_find_up (p);
+ len2 = p2->tmp_ival;
+ if (len2 == -1)
+ {
+ if (HAVE_TWO (ider_len) && !der[counter]
+ && !der[counter + 1])
+ {
+ p = p2;
+ move = UP;
+ counter += 2;
+ DECR_LEN (ider_len, 2);
+ continue;
+ }
+ }
+ else if (counter == len2)
+ {
+ p = p2;
+ move = UP;
+ continue;
+ }
+ else if (counter > len2)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ p2 = p2->down;
+ while (p2)
+ {
+ if ((p2->type & CONST_SET) && (p2->type & CONST_NOT_USED))
+ {
+ ris =
+ extract_tag_der_recursive (p2, der + counter,
+ ider_len, &len2, NULL,
+ flags);
+ if (ris == ASN1_SUCCESS)
+ {
+ p2->type &= ~CONST_NOT_USED;
+ p = p2;
+ break;
+ }
+ }
+ p2 = p2->right;
+ }
+ if (p2 == NULL)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+
+ /* the position in the DER structure this starts */
+ p->start = counter;
+ p->end = total_len - 1;
+
+ if ((p->type & CONST_OPTION) || (p->type & CONST_DEFAULT))
+ {
+ p2 = _asn1_find_up (p);
+ len2 = p2->tmp_ival;
+ if (counter == len2)
+ {
+ if (p->right)
+ {
+ p2 = p->right;
+ move = RIGHT;
+ }
+ else
+ move = UP;
+
+ if (p->type & CONST_OPTION)
+ asn1_delete_structure (&p);
+
+ p = p2;
+ continue;
+ }
+ }
+
+ if (type_field (p->type) == ASN1_ETYPE_CHOICE)
+ {
+ while (p->down)
+ {
+ ris =
+ extract_tag_der_recursive (p->down, der + counter,
+ ider_len, &len2, NULL, flags);
+
+ if (ris == ASN1_SUCCESS)
+ {
+ delete_unneeded_choice_fields (p->down);
+ break;
+ }
+ else if (ris == ASN1_ERROR_TYPE_ANY)
+ {
+ result = ASN1_ERROR_TYPE_ANY;
+ warn ();
+ goto cleanup;
+ }
+ else
+ {
+ p2 = p->down;
+ asn1_delete_structure (&p2);
+ }
+ }
+
+ if (p->down == NULL)
+ {
+ if (!(p->type & CONST_OPTION))
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+ else if (type_field (p->type) != ASN1_ETYPE_CHOICE)
+ p = p->down;
+
+ p->start = counter;
+ }
+
+ if ((p->type & CONST_OPTION) || (p->type & CONST_DEFAULT))
+ {
+ p2 = _asn1_find_up (p);
+ len2 = p2->tmp_ival;
+
+ if ((len2 != -1) && (counter > len2))
+ ris = ASN1_TAG_ERROR;
+ }
+
+ if (ris == ASN1_SUCCESS)
+ ris =
+ extract_tag_der_recursive (p, der + counter, ider_len,
+ &tag_len, &inner_tag_len, flags);
+
+ if (ris != ASN1_SUCCESS)
+ {
+ if (p->type & CONST_OPTION)
+ {
+ p->type |= CONST_NOT_USED;
+ move = RIGHT;
+ }
+ else if (p->type & CONST_DEFAULT)
+ {
+ _asn1_set_value (p, NULL, 0);
+ move = RIGHT;
+ }
+ else
+ {
+ if (errorDescription != NULL)
+ _asn1_error_description_tag_error (p, errorDescription);
+
+ result = ASN1_TAG_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+ else
+ {
+ DECR_LEN (ider_len, tag_len);
+ counter += tag_len;
+ }
+ }
+
+ if (ris == ASN1_SUCCESS)
+ {
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_NULL:
+ DECR_LEN (ider_len, 1);
+ if (der[counter])
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ counter++;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_BOOLEAN:
+ DECR_LEN (ider_len, 2);
+
+ if (der[counter++] != 1)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ if (der[counter++] == 0)
+ _asn1_set_value (p, "F", 1);
+ else
+ _asn1_set_value (p, "T", 1);
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_INTEGER:
+ case ASN1_ETYPE_ENUMERATED:
+ len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+ if (len2 < 0)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len3 + len2);
+
+ _asn1_set_value (p, der + counter, len3 + len2);
+ counter += len3 + len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_OBJECT_ID:
+ result =
+ asn1_get_object_id_der (der + counter, ider_len, &len2,
+ temp, sizeof (temp));
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+
+ tlen = strlen (temp);
+ if (tlen > 0)
+ _asn1_set_value (p, temp, tlen + 1);
+
+ counter += len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ case ASN1_ETYPE_UTC_TIME:
+ result =
+ _asn1_get_time_der (type_field (p->type), der + counter,
+ ider_len, &len2, temp, sizeof (temp) - 1,
+ flags);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+
+ tlen = strlen (temp);
+ if (tlen > 0)
+ _asn1_set_value (p, temp, tlen);
+
+ counter += len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_OCTET_STRING:
+ if (counter < inner_tag_len)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ ptag = der + counter - inner_tag_len;
+ if ((flags & ASN1_DECODE_FLAG_STRICT_DER)
+ || !(ptag[0] & ASN1_CLASS_STRUCTURED))
+ {
+ if (ptag[0] & ASN1_CLASS_STRUCTURED)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+ if (len2 < 0)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len3 + len2);
+
+ _asn1_set_value (p, der + counter, len3 + len2);
+ counter += len3 + len2;
+ }
+ else
+ {
+ unsigned dflags = 0, vlen, ber_len;
+
+ if (ptag[0] & ASN1_CLASS_STRUCTURED)
+ dflags |= DECODE_FLAG_CONSTRUCTED;
+
+ result =
+ _asn1_decode_simple_ber (type_field (p->type),
+ der + counter, ider_len, &ptmp,
+ &vlen, &ber_len, dflags);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, ber_len);
+
+ _asn1_set_value_lv (p, ptmp, vlen);
+
+ counter += ber_len;
+ free (ptmp);
+ }
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ case ASN1_ETYPE_BIT_STRING:
+ len2 = asn1_get_length_der (der + counter, ider_len, &len3);
+ if (len2 < 0)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len3 + len2);
+
+ _asn1_set_value (p, der + counter, len3 + len2);
+ counter += len3 + len2;
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_SEQUENCE:
+ case ASN1_ETYPE_SET:
+ if (move == UP)
+ {
+ len2 = p->tmp_ival;
+ p->tmp_ival = 0;
+ if (len2 == -1)
+ { /* indefinite length method */
+ DECR_LEN (ider_len, 2);
+ if ((der[counter]) || der[counter + 1])
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ counter += 2;
+ }
+ else
+ { /* definite length method */
+ if (len2 != counter)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+ move = RIGHT;
+ }
+ else
+ { /* move==DOWN || move==RIGHT */
+ len3 = asn1_get_length_der (der + counter, ider_len, &len2);
+ if (IS_ERR (len3, flags))
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+ counter += len2;
+
+ if (len3 > 0)
+ {
+ p->tmp_ival = counter + len3;
+ move = DOWN;
+ }
+ else if (len3 == 0)
+ {
+ p2 = p->down;
+ while (p2)
+ {
+ if (type_field (p2->type) != ASN1_ETYPE_TAG)
+ {
+ p3 = p2->right;
+ asn1_delete_structure (&p2);
+ p2 = p3;
+ }
+ else
+ p2 = p2->right;
+ }
+ move = RIGHT;
+ }
+ else
+ { /* indefinite length method */
+ p->tmp_ival = -1;
+ move = DOWN;
+ }
+ }
+ break;
+ case ASN1_ETYPE_SEQUENCE_OF:
+ case ASN1_ETYPE_SET_OF:
+ if (move == UP)
+ {
+ len2 = p->tmp_ival;
+ if (len2 == -1)
+ { /* indefinite length method */
+ if (!HAVE_TWO (ider_len)
+ || ((der[counter]) || der[counter + 1]))
+ {
+ result = _asn1_append_sequence_set (p, &tcache);
+ if (result != 0)
+ {
+ warn ();
+ goto cleanup;
+ }
+ p = tcache.tail;
+ move = RIGHT;
+ continue;
+ }
+
+ p->tmp_ival = 0;
+ tcache.tail = NULL; /* finished decoding this structure */
+ tcache.head = NULL;
+ DECR_LEN (ider_len, 2);
+ counter += 2;
+ }
+ else
+ { /* definite length method */
+ if (len2 > counter)
+ {
+ result = _asn1_append_sequence_set (p, &tcache);
+ if (result != 0)
+ {
+ warn ();
+ goto cleanup;
+ }
+ p = tcache.tail;
+ move = RIGHT;
+ continue;
+ }
+
+ p->tmp_ival = 0;
+ tcache.tail = NULL; /* finished decoding this structure */
+ tcache.head = NULL;
+
+ if (len2 != counter)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+ }
+ else
+ { /* move==DOWN || move==RIGHT */
+ len3 = asn1_get_length_der (der + counter, ider_len, &len2);
+ if (IS_ERR (len3, flags))
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+ counter += len2;
+ if (len3)
+ {
+ if (len3 > 0)
+ { /* definite length method */
+ p->tmp_ival = counter + len3;
+ }
+ else
+ { /* indefinite length method */
+ p->tmp_ival = -1;
+ }
+
+ p2 = p->down;
+ if (p2 == NULL)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ while ((type_field (p2->type) == ASN1_ETYPE_TAG)
+ || (type_field (p2->type) == ASN1_ETYPE_SIZE))
+ p2 = p2->right;
+ if (p2->right == NULL)
+ {
+ result = _asn1_append_sequence_set (p, &tcache);
+ if (result != 0)
+ {
+ warn ();
+ goto cleanup;
+ }
+ }
+ p = p2;
+ }
+ }
+ move = RIGHT;
+ break;
+ case ASN1_ETYPE_ANY:
+ /* Check indefinite lenth method in an EXPLICIT TAG */
+
+ if (!(flags & ASN1_DECODE_FLAG_STRICT_DER)
+ && (p->type & CONST_TAG) && tag_len == 2
+ && (der[counter - 1] == 0x80))
+ indefinite = 1;
+ else
+ indefinite = 0;
+
+ if (asn1_get_tag_der
+ (der + counter, ider_len, &class, &len2,
+ &tag) != ASN1_SUCCESS)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+
+ len4 =
+ asn1_get_length_der (der + counter + len2, ider_len, &len3);
+ if (IS_ERR (len4, flags))
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ if (len4 != -1) /* definite */
+ {
+ len2 += len4;
+
+ DECR_LEN (ider_len, len4 + len3);
+ _asn1_set_value_lv (p, der + counter, len2 + len3);
+ counter += len2 + len3;
+ }
+ else /* == -1 */
+ { /* indefinite length */
+ ider_len += len2; /* undo DECR_LEN */
+
+ if (counter == 0)
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+
+ result =
+ _asn1_get_indefinite_length_string (der + counter,
+ ider_len, &len2);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ DECR_LEN (ider_len, len2);
+ _asn1_set_value_lv (p, der + counter, len2);
+ counter += len2;
+
+ }
+
+ /* Check if a couple of 0x00 are present due to an EXPLICIT TAG with
+ an indefinite length method. */
+ if (indefinite)
+ {
+ DECR_LEN (ider_len, 2);
+ if (!der[counter] && !der[counter + 1])
+ {
+ counter += 2;
+ }
+ else
+ {
+ result = ASN1_DER_ERROR;
+ warn ();
+ goto cleanup;
+ }
+ }
+
+ move = RIGHT;
+ break;
+ default:
+ move = (move == UP) ? RIGHT : DOWN;
+ break;
+ }
+ }
+
+ if (p)
+ {
+ p->end = counter - 1;
+ }
+
+ if (p == node && move != DOWN)
+ break;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+ if ((move == RIGHT) && !(p->type & CONST_SET))
+ {
+ if (p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ _asn1_delete_not_used (*element);
+
+ if ((ider_len < 0) ||
+ (!(flags & ASN1_DECODE_FLAG_ALLOW_PADDING) && (ider_len != 0)))
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+
+ *max_ider_len = total_len - ider_len;
+
+ return ASN1_SUCCESS;
+
+cleanup:
+ asn1_delete_structure (element);
+ return result;
+}
+
+
+/**
+ * asn1_der_decoding:
+ * @element: pointer to an ASN1 structure.
+ * @ider: vector that contains the DER encoding.
+ * @ider_len: number of bytes of *@ider: @ider[0]..@ider[len-1].
+ * @errorDescription: null-terminated string contains details when an
+ * error occurred.
+ *
+ * Fill the structure *@element with values of a DER encoding
+ * string. The structure must just be created with function
+ * asn1_create_element().
+ *
+ * Note that the *@element variable is provided as a pointer for
+ * historical reasons.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ * if @ELEMENT is %NULL, and %ASN1_TAG_ERROR or
+ * %ASN1_DER_ERROR if the der encoding doesn't match the structure
+ * name (*@ELEMENT deleted).
+ **/
+int
+asn1_der_decoding (asn1_node * element, const void *ider, int ider_len,
+ char *errorDescription)
+{
+ return asn1_der_decoding2 (element, ider, &ider_len, 0, errorDescription);
+}
+
+/**
+ * asn1_der_decoding_element:
+ * @structure: pointer to an ASN1 structure
+ * @elementName: name of the element to fill
+ * @ider: vector that contains the DER encoding of the whole structure.
+ * @len: number of bytes of *der: der[0]..der[len-1]
+ * @errorDescription: null-terminated string contains details when an
+ * error occurred.
+ *
+ * Fill the element named @ELEMENTNAME with values of a DER encoding
+ * string. The structure must just be created with function
+ * asn1_create_element(). The DER vector must contain the encoding
+ * string of the whole @STRUCTURE. If an error occurs during the
+ * decoding procedure, the *@STRUCTURE is deleted and set equal to
+ * %NULL.
+ *
+ * This function is deprecated and may just be an alias to asn1_der_decoding
+ * in future versions. Use asn1_der_decoding() instead.
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ * if ELEMENT is %NULL or @elementName == NULL, and
+ * %ASN1_TAG_ERROR or %ASN1_DER_ERROR if the der encoding doesn't
+ * match the structure @structure (*ELEMENT deleted).
+ **/
+int
+asn1_der_decoding_element (asn1_node * structure, const char *elementName,
+ const void *ider, int len, char *errorDescription)
+{
+ return asn1_der_decoding (structure, ider, len, errorDescription);
+}
+
+/**
+ * asn1_der_decoding_startEnd:
+ * @element: pointer to an ASN1 element
+ * @ider: vector that contains the DER encoding.
+ * @ider_len: number of bytes of *@ider: @ider[0]..@ider[len-1]
+ * @name_element: an element of NAME structure.
+ * @start: the position of the first byte of NAME_ELEMENT decoding
+ * (@ider[*start])
+ * @end: the position of the last byte of NAME_ELEMENT decoding
+ * (@ider[*end])
+ *
+ * Find the start and end point of an element in a DER encoding
+ * string. I mean that if you have a der encoding and you have already
+ * used the function asn1_der_decoding() to fill a structure, it may
+ * happen that you want to find the piece of string concerning an
+ * element of the structure.
+ *
+ * One example is the sequence "tbsCertificate" inside an X509
+ * certificate.
+ *
+ * Note that since libtasn1 3.7 the @ider and @ider_len parameters
+ * can be omitted, if the element is already decoded using asn1_der_decoding().
+ *
+ * Returns: %ASN1_SUCCESS if DER encoding OK, %ASN1_ELEMENT_NOT_FOUND
+ * if ELEMENT is %asn1_node EMPTY or @name_element is not a valid
+ * element, %ASN1_TAG_ERROR or %ASN1_DER_ERROR if the der encoding
+ * doesn't match the structure ELEMENT.
+ **/
+int
+asn1_der_decoding_startEnd (asn1_node element, const void *ider, int ider_len,
+ const char *name_element, int *start, int *end)
+{
+ asn1_node node, node_to_find;
+ int result = ASN1_DER_ERROR;
+
+ node = element;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ node_to_find = asn1_find_node (node, name_element);
+
+ if (node_to_find == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ *start = node_to_find->start;
+ *end = node_to_find->end;
+
+ if (*start == 0 && *end == 0)
+ {
+ if (ider == NULL || ider_len == 0)
+ return ASN1_GENERIC_ERROR;
+
+ /* it seems asn1_der_decoding() wasn't called before. Do it now */
+ result = asn1_der_decoding (&node, ider, ider_len, NULL);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ return result;
+ }
+
+ node_to_find = asn1_find_node (node, name_element);
+ if (node_to_find == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ *start = node_to_find->start;
+ *end = node_to_find->end;
+ }
+
+ if (*end < *start)
+ return ASN1_GENERIC_ERROR;
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_expand_any_defined_by:
+ * @definitions: ASN1 definitions
+ * @element: pointer to an ASN1 structure
+ *
+ * Expands every "ANY DEFINED BY" element of a structure created from
+ * a DER decoding process (asn1_der_decoding function). The element
+ * ANY must be defined by an OBJECT IDENTIFIER. The type used to
+ * expand the element ANY is the first one following the definition of
+ * the actual value of the OBJECT IDENTIFIER.
+ *
+ * Returns: %ASN1_SUCCESS if Substitution OK, %ASN1_ERROR_TYPE_ANY if
+ * some "ANY DEFINED BY" element couldn't be expanded due to a
+ * problem in OBJECT_ID -> TYPE association, or other error codes
+ * depending on DER decoding.
+ **/
+int
+asn1_expand_any_defined_by (asn1_node_const definitions, asn1_node * element)
+{
+ char name[2 * ASN1_MAX_NAME_SIZE + 2], value[ASN1_MAX_NAME_SIZE];
+ int retCode = ASN1_SUCCESS, result;
+ int len, len2, len3;
+ asn1_node_const p2;
+ asn1_node p, p3, aux = NULL;
+ char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+ const char *definitionsName;
+
+ if ((definitions == NULL) || (*element == NULL))
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ definitionsName = definitions->name;
+
+ p = *element;
+ while (p)
+ {
+
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_ANY:
+ if ((p->type & CONST_DEFINED_BY) && (p->value))
+ {
+ /* search the "DEF_BY" element */
+ p2 = p->down;
+ while ((p2) && (type_field (p2->type) != ASN1_ETYPE_CONSTANT))
+ p2 = p2->right;
+
+ if (!p2)
+ {
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+
+ p3 = _asn1_find_up (p);
+
+ if (!p3)
+ {
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+
+ p3 = p3->down;
+ while (p3)
+ {
+ if (!(strcmp (p3->name, p2->name)))
+ break;
+ p3 = p3->right;
+ }
+
+ if ((!p3) || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID) ||
+ (p3->value == NULL))
+ {
+
+ p3 = _asn1_find_up (p);
+ p3 = _asn1_find_up (p3);
+
+ if (!p3)
+ {
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+
+ p3 = p3->down;
+
+ while (p3)
+ {
+ if (!(strcmp (p3->name, p2->name)))
+ break;
+ p3 = p3->right;
+ }
+
+ if ((!p3) || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID)
+ || (p3->value == NULL))
+ {
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+ }
+
+ /* search the OBJECT_ID into definitions */
+ p2 = definitions->down;
+ while (p2)
+ {
+ if ((type_field (p2->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p2->type & CONST_ASSIGN))
+ {
+ snprintf (name, sizeof (name), "%s.%s", definitionsName,
+ p2->name);
+
+ len = ASN1_MAX_NAME_SIZE;
+ result =
+ asn1_read_value (definitions, name, value, &len);
+
+ if ((result == ASN1_SUCCESS)
+ && (!_asn1_strcmp (p3->value, value)))
+ {
+ p2 = p2->right; /* pointer to the structure to
+ use for expansion */
+ while ((p2) && (p2->type & CONST_ASSIGN))
+ p2 = p2->right;
+
+ if (p2)
+ {
+ snprintf (name, sizeof (name), "%s.%s",
+ definitionsName, p2->name);
+
+ result =
+ asn1_create_element (definitions, name, &aux);
+ if (result == ASN1_SUCCESS)
+ {
+ _asn1_cpy_name (aux, p);
+ len2 =
+ asn1_get_length_der (p->value,
+ p->value_len, &len3);
+ if (len2 < 0)
+ return ASN1_DER_ERROR;
+
+ result =
+ asn1_der_decoding (&aux, p->value + len3,
+ len2,
+ errorDescription);
+ if (result == ASN1_SUCCESS)
+ {
+
+ _asn1_set_right (aux, p->right);
+ _asn1_set_right (p, aux);
+
+ result = asn1_delete_structure (&p);
+ if (result == ASN1_SUCCESS)
+ {
+ p = aux;
+ aux = NULL;
+ break;
+ }
+ else
+ { /* error with asn1_delete_structure */
+ asn1_delete_structure (&aux);
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with asn1_der_decoding */
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with asn1_create_element */
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with the pointer to the structure to exapand */
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+ }
+ }
+ p2 = p2->right;
+ } /* end while */
+
+ if (!p2)
+ {
+ retCode = ASN1_ERROR_TYPE_ANY;
+ break;
+ }
+
+ }
+ break;
+ default:
+ break;
+ }
+
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else if (p == *element)
+ {
+ p = NULL;
+ break;
+ }
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == *element)
+ {
+ p = NULL;
+ break;
+ }
+ if (p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+
+ return retCode;
+}
+
+/**
+ * asn1_expand_octet_string:
+ * @definitions: ASN1 definitions
+ * @element: pointer to an ASN1 structure
+ * @octetName: name of the OCTECT STRING field to expand.
+ * @objectName: name of the OBJECT IDENTIFIER field to use to define
+ * the type for expansion.
+ *
+ * Expands an "OCTET STRING" element of a structure created from a DER
+ * decoding process (the asn1_der_decoding() function). The type used
+ * for expansion is the first one following the definition of the
+ * actual value of the OBJECT IDENTIFIER indicated by OBJECTNAME.
+ *
+ * Returns: %ASN1_SUCCESS if substitution OK, %ASN1_ELEMENT_NOT_FOUND
+ * if @objectName or @octetName are not correct,
+ * %ASN1_VALUE_NOT_VALID if it wasn't possible to find the type to
+ * use for expansion, or other errors depending on DER decoding.
+ **/
+int
+asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
+ const char *octetName, const char *objectName)
+{
+ char name[2 * ASN1_MAX_NAME_SIZE + 1], value[ASN1_MAX_NAME_SIZE];
+ int retCode = ASN1_SUCCESS, result;
+ int len, len2, len3;
+ asn1_node_const p2;
+ asn1_node aux = NULL;
+ asn1_node octetNode = NULL, objectNode = NULL;
+ char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+ if ((definitions == NULL) || (*element == NULL))
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ octetNode = asn1_find_node (*element, octetName);
+ if (octetNode == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+ if (type_field (octetNode->type) != ASN1_ETYPE_OCTET_STRING)
+ return ASN1_ELEMENT_NOT_FOUND;
+ if (octetNode->value == NULL)
+ return ASN1_VALUE_NOT_FOUND;
+
+ objectNode = asn1_find_node (*element, objectName);
+ if (objectNode == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ if (type_field (objectNode->type) != ASN1_ETYPE_OBJECT_ID)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ if (objectNode->value == NULL)
+ return ASN1_VALUE_NOT_FOUND;
+
+
+ /* search the OBJECT_ID into definitions */
+ p2 = definitions->down;
+ while (p2)
+ {
+ if ((type_field (p2->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p2->type & CONST_ASSIGN))
+ {
+ strcpy (name, definitions->name);
+ strcat (name, ".");
+ strcat (name, p2->name);
+
+ len = sizeof (value);
+ result = asn1_read_value (definitions, name, value, &len);
+
+ if ((result == ASN1_SUCCESS)
+ && (!_asn1_strcmp (objectNode->value, value)))
+ {
+
+ p2 = p2->right; /* pointer to the structure to
+ use for expansion */
+ while ((p2) && (p2->type & CONST_ASSIGN))
+ p2 = p2->right;
+
+ if (p2)
+ {
+ strcpy (name, definitions->name);
+ strcat (name, ".");
+ strcat (name, p2->name);
+
+ result = asn1_create_element (definitions, name, &aux);
+ if (result == ASN1_SUCCESS)
+ {
+ _asn1_cpy_name (aux, octetNode);
+ len2 =
+ asn1_get_length_der (octetNode->value,
+ octetNode->value_len, &len3);
+ if (len2 < 0)
+ return ASN1_DER_ERROR;
+
+ result =
+ asn1_der_decoding (&aux, octetNode->value + len3,
+ len2, errorDescription);
+ if (result == ASN1_SUCCESS)
+ {
+
+ _asn1_set_right (aux, octetNode->right);
+ _asn1_set_right (octetNode, aux);
+
+ result = asn1_delete_structure (&octetNode);
+ if (result == ASN1_SUCCESS)
+ {
+ aux = NULL;
+ break;
+ }
+ else
+ { /* error with asn1_delete_structure */
+ asn1_delete_structure (&aux);
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with asn1_der_decoding */
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with asn1_create_element */
+ retCode = result;
+ break;
+ }
+ }
+ else
+ { /* error with the pointer to the structure to exapand */
+ retCode = ASN1_VALUE_NOT_VALID;
+ break;
+ }
+ }
+ }
+
+ p2 = p2->right;
+
+ }
+
+ if (!p2)
+ retCode = ASN1_VALUE_NOT_VALID;
+
+ return retCode;
+}
+
+/*-
+ * _asn1_decode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @dflags: DECODE_FLAG_*
+ *
+ * Decodes a simple DER encoded type (e.g. a string, which is not constructed).
+ * The output is a pointer inside the @der.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ -*/
+static int
+_asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, const unsigned char **str,
+ unsigned int *str_len, unsigned dflags)
+{
+ int tag_len, len_len;
+ const unsigned char *p;
+ int der_len = _der_len;
+ unsigned char class;
+ unsigned long tag;
+ long ret;
+
+ if (der == NULL || der_len == 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ if (ETYPE_OK (etype) == 0 || ETYPE_IS_STRING (etype) == 0)
+ return ASN1_VALUE_NOT_VALID;
+
+ /* doesn't handle constructed classes */
+ class = ETYPE_CLASS (etype);
+ if (class != ASN1_CLASS_UNIVERSAL)
+ return ASN1_VALUE_NOT_VALID;
+
+ p = der;
+
+ if (dflags & DECODE_FLAG_HAVE_TAG)
+ {
+ ret = asn1_get_tag_der (p, der_len, &class, &tag_len, &tag);
+ if (ret != ASN1_SUCCESS)
+ return ret;
+
+ if (class != ETYPE_CLASS (etype) || tag != ETYPE_TAG (etype))
+ {
+ warn ();
+ return ASN1_DER_ERROR;
+ }
+
+ p += tag_len;
+ der_len -= tag_len;
+ if (der_len <= 0)
+ return ASN1_DER_ERROR;
+ }
+
+ ret = asn1_get_length_der (p, der_len, &len_len);
+ if (ret < 0)
+ return ASN1_DER_ERROR;
+
+ p += len_len;
+ der_len -= len_len;
+ if (der_len <= 0)
+ return ASN1_DER_ERROR;
+
+ *str_len = ret;
+ *str = p;
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_decode_simple_der:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ *
+ * Decodes a simple DER encoded type (e.g. a string, which is not constructed).
+ * The output is a pointer inside the @der.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, const unsigned char **str,
+ unsigned int *str_len)
+{
+ return _asn1_decode_simple_der (etype, der, _der_len, str, str_len,
+ DECODE_FLAG_HAVE_TAG);
+}
+
+static int
+append (uint8_t ** dst, unsigned *dst_size, const unsigned char *src,
+ unsigned src_size)
+{
+ if (src_size == 0)
+ return ASN1_SUCCESS;
+
+ *dst = _asn1_realloc (*dst, *dst_size + src_size);
+ if (*dst == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+ memcpy (*dst + *dst_size, src, src_size);
+ *dst_size += src_size;
+ return ASN1_SUCCESS;
+}
+
+/*-
+ * _asn1_decode_simple_ber:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @ber_len: the total length occupied by BER (may be %NULL)
+ * @have_tag: whether a DER tag is included
+ *
+ * Decodes a BER encoded type. The output is an allocated value
+ * of the data. This decodes BER STRINGS only. Other types are
+ * decoded as DER.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ -*/
+static int
+_asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, unsigned char **str,
+ unsigned int *str_len, unsigned int *ber_len,
+ unsigned dflags)
+{
+ int tag_len, len_len;
+ const unsigned char *p;
+ int der_len = _der_len;
+ uint8_t *total = NULL;
+ unsigned total_size = 0;
+ unsigned char class;
+ unsigned long tag;
+ unsigned char *out = NULL;
+ const unsigned char *cout = NULL;
+ unsigned out_len;
+ long result;
+
+ if (ber_len)
+ *ber_len = 0;
+
+ if (der == NULL || der_len == 0)
+ {
+ warn ();
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ if (ETYPE_OK (etype) == 0)
+ {
+ warn ();
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ /* doesn't handle constructed + definite classes */
+ class = ETYPE_CLASS (etype);
+ if (class != ASN1_CLASS_UNIVERSAL)
+ {
+ warn ();
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ p = der;
+
+ if (dflags & DECODE_FLAG_HAVE_TAG)
+ {
+ result = asn1_get_tag_der (p, der_len, &class, &tag_len, &tag);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ return result;
+ }
+
+ if (tag != ETYPE_TAG (etype))
+ {
+ warn ();
+ return ASN1_DER_ERROR;
+ }
+
+ p += tag_len;
+
+ DECR_LEN (der_len, tag_len);
+
+ if (ber_len)
+ *ber_len += tag_len;
+ }
+
+ /* indefinite constructed */
+ if ((((dflags & DECODE_FLAG_CONSTRUCTED) || class == ASN1_CLASS_STRUCTURED)
+ && ETYPE_IS_STRING (etype)) && !(dflags & DECODE_FLAG_LEVEL3))
+ {
+ if (der_len == 0)
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+
+ if (der_len > 0 && p[0] == 0x80) /* indefinite */
+ {
+ len_len = 1;
+ DECR_LEN (der_len, len_len);
+ p += len_len;
+
+ if (ber_len)
+ *ber_len += len_len;
+
+ /* decode the available octet strings */
+ do
+ {
+ unsigned tmp_len;
+ unsigned flags = DECODE_FLAG_HAVE_TAG;
+
+ if (dflags & DECODE_FLAG_LEVEL1)
+ flags |= DECODE_FLAG_LEVEL2;
+ else if (dflags & DECODE_FLAG_LEVEL2)
+ flags |= DECODE_FLAG_LEVEL3;
+ else
+ flags |= DECODE_FLAG_LEVEL1;
+
+ result =
+ _asn1_decode_simple_ber (etype, p, der_len, &out, &out_len,
+ &tmp_len, flags);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ p += tmp_len;
+ DECR_LEN (der_len, tmp_len);
+
+ if (ber_len)
+ *ber_len += tmp_len;
+
+ DECR_LEN (der_len, 2); /* we need the EOC */
+
+ result = append (&total, &total_size, out, out_len);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ free (out);
+ out = NULL;
+
+ if (p[0] == 0 && p[1] == 0) /* EOC */
+ {
+ if (ber_len)
+ *ber_len += 2;
+ break;
+ }
+
+ /* no EOC */
+ der_len += 2;
+
+ if (der_len == 2)
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+ }
+ while (1);
+ }
+ else /* constructed */
+ {
+ long const_len;
+
+ result = asn1_get_length_ber (p, der_len, &len_len);
+ if (result < 0)
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+
+ DECR_LEN (der_len, len_len);
+ p += len_len;
+
+ const_len = result;
+
+ if (ber_len)
+ *ber_len += len_len;
+
+ /* decode the available octet strings */
+ while (const_len > 0)
+ {
+ unsigned tmp_len;
+ unsigned flags = DECODE_FLAG_HAVE_TAG;
+
+ if (dflags & DECODE_FLAG_LEVEL1)
+ flags |= DECODE_FLAG_LEVEL2;
+ else if (dflags & DECODE_FLAG_LEVEL2)
+ flags |= DECODE_FLAG_LEVEL3;
+ else
+ flags |= DECODE_FLAG_LEVEL1;
+
+ result =
+ _asn1_decode_simple_ber (etype, p, der_len, &out, &out_len,
+ &tmp_len, flags);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ p += tmp_len;
+ DECR_LEN (der_len, tmp_len);
+ DECR_LEN (const_len, tmp_len);
+
+ if (ber_len)
+ *ber_len += tmp_len;
+
+ result = append (&total, &total_size, out, out_len);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ free (out);
+ out = NULL;
+ }
+ }
+ }
+ else if (class == ETYPE_CLASS (etype))
+ {
+ if (ber_len)
+ {
+ result = asn1_get_length_der (p, der_len, &len_len);
+ if (result < 0)
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+ *ber_len += result + len_len;
+ }
+
+ /* non-string values are decoded as DER */
+ result =
+ _asn1_decode_simple_der (etype, der, _der_len, &cout, &out_len,
+ dflags);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+
+ result = append (&total, &total_size, cout, out_len);
+ if (result != ASN1_SUCCESS)
+ {
+ warn ();
+ goto cleanup;
+ }
+ }
+ else
+ {
+ warn ();
+ result = ASN1_DER_ERROR;
+ goto cleanup;
+ }
+
+ *str = total;
+ *str_len = total_size;
+
+ return ASN1_SUCCESS;
+cleanup:
+ free (out);
+ free (total);
+ return result;
+}
+
+/**
+ * asn1_decode_simple_ber:
+ * @etype: The type of the string to be encoded (ASN1_ETYPE_)
+ * @der: the encoded string
+ * @_der_len: the bytes of the encoded string
+ * @str: a pointer to the data
+ * @str_len: the length of the data
+ * @ber_len: the total length occupied by BER (may be %NULL)
+ *
+ * Decodes a BER encoded type. The output is an allocated value
+ * of the data. This decodes BER STRINGS only. Other types are
+ * decoded as DER.
+ *
+ * Returns: %ASN1_SUCCESS if successful or an error value.
+ **/
+int
+asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len, unsigned char **str,
+ unsigned int *str_len, unsigned int *ber_len)
+{
+ return _asn1_decode_simple_ber (etype, der, _der_len, str, str_len, ber_len,
+ DECODE_FLAG_HAVE_TAG);
+}
diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
new file mode 100644
index 000000000..d4c558e10
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/element.c
@@ -0,0 +1,1109 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+/*****************************************************/
+/* File: element.c */
+/* Description: Functions with the read and write */
+/* functions. */
+/*****************************************************/
+
+
+#include <int.h>
+#include "parser_aux.h"
+#include <gstr.h>
+#include "structure.h"
+#include "c-ctype.h"
+#include "element.h"
+
+void
+_asn1_hierarchical_name (asn1_node_const node, char *name, int name_size)
+{
+ asn1_node_const p;
+ char tmp_name[64];
+
+ p = node;
+
+ name[0] = 0;
+
+ while (p != NULL)
+ {
+ if (p->name[0] != 0)
+ {
+ _asn1_str_cpy (tmp_name, sizeof (tmp_name), name),
+ _asn1_str_cpy (name, name_size, p->name);
+ _asn1_str_cat (name, name_size, ".");
+ _asn1_str_cat (name, name_size, tmp_name);
+ }
+ p = _asn1_find_up (p);
+ }
+
+ if (name[0] == 0)
+ _asn1_str_cpy (name, name_size, "ROOT");
+}
+
+
+/******************************************************************/
+/* Function : _asn1_convert_integer */
+/* Description: converts an integer from a null terminated string */
+/* to der decoding. The convertion from a null */
+/* terminated string to an integer is made with */
+/* the 'strtol' function. */
+/* Parameters: */
+/* value: null terminated string to convert. */
+/* value_out: convertion result (memory must be already */
+/* allocated). */
+/* value_out_size: number of bytes of value_out. */
+/* len: number of significant byte of value_out. */
+/* Return: ASN1_MEM_ERROR or ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_convert_integer (const unsigned char *value, unsigned char *value_out,
+ int value_out_size, int *len)
+{
+ char negative;
+ unsigned char val[SIZEOF_UNSIGNED_LONG_INT];
+ long valtmp;
+ int k, k2;
+
+ valtmp = _asn1_strtol (value, NULL, 10);
+
+ for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
+ {
+ val[SIZEOF_UNSIGNED_LONG_INT - k - 1] = (valtmp >> (8 * k)) & 0xFF;
+ }
+
+ if (val[0] & 0x80)
+ negative = 1;
+ else
+ negative = 0;
+
+ for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT - 1; k++)
+ {
+ if (negative && (val[k] != 0xFF))
+ break;
+ else if (!negative && val[k])
+ break;
+ }
+
+ if ((negative && !(val[k] & 0x80)) || (!negative && (val[k] & 0x80)))
+ k--;
+
+ *len = SIZEOF_UNSIGNED_LONG_INT - k;
+
+ if (SIZEOF_UNSIGNED_LONG_INT - k > value_out_size)
+ /* VALUE_OUT is too short to contain the value conversion */
+ return ASN1_MEM_ERROR;
+
+ if (value_out != NULL)
+ {
+ for (k2 = k; k2 < SIZEOF_UNSIGNED_LONG_INT; k2++)
+ value_out[k2 - k] = val[k2];
+ }
+
+#if 0
+ printf ("_asn1_convert_integer: valueIn=%s, lenOut=%d", value, *len);
+ for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
+ printf (", vOut[%d]=%d", k, value_out[k]);
+ printf ("\n");
+#endif
+
+ return ASN1_SUCCESS;
+}
+
+/* Appends a new element into the sequence (or set) defined by this
+ * node. The new element will have a name of '?number', where number
+ * is a monotonically increased serial number.
+ *
+ * The last element in the list may be provided in @pcache, to avoid
+ * traversing the list, an expensive operation in long lists.
+ *
+ * On success it returns in @pcache the added element (which is the
+ * tail in the list of added elements).
+ */
+int
+_asn1_append_sequence_set (asn1_node node, struct node_tail_cache_st *pcache)
+{
+ asn1_node p, p2;
+ char temp[LTOSTR_MAX_SIZE + 1];
+ long n;
+
+ if (!node || !(node->down))
+ return ASN1_GENERIC_ERROR;
+
+ p = node->down;
+ while ((type_field (p->type) == ASN1_ETYPE_TAG)
+ || (type_field (p->type) == ASN1_ETYPE_SIZE))
+ p = p->right;
+
+ p2 = _asn1_copy_structure3 (p);
+ if (p2 == NULL)
+ return ASN1_GENERIC_ERROR;
+
+ if (pcache == NULL || pcache->tail == NULL || pcache->head != node)
+ {
+ while (p->right)
+ {
+ p = p->right;
+ }
+ }
+ else
+ {
+ p = pcache->tail;
+ }
+
+ _asn1_set_right (p, p2);
+ if (pcache)
+ {
+ pcache->head = node;
+ pcache->tail = p2;
+ }
+
+ if (p->name[0] == 0)
+ _asn1_str_cpy (temp, sizeof (temp), "?1");
+ else
+ {
+ n = strtol (p->name + 1, NULL, 0);
+ n++;
+ temp[0] = '?';
+ _asn1_ltostr (n, temp + 1);
+ }
+ _asn1_set_name (p2, temp);
+ /* p2->type |= CONST_OPTION; */
+
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_write_value:
+ * @node_root: pointer to a structure
+ * @name: the name of the element inside the structure that you want to set.
+ * @ivalue: vector used to specify the value to set. If len is >0,
+ * VALUE must be a two's complement form integer. if len=0 *VALUE
+ * must be a null terminated string with an integer value.
+ * @len: number of bytes of *value to use to set the value:
+ * value[0]..value[len-1] or 0 if value is a null terminated string
+ *
+ * Set the value of one element inside a structure.
+ *
+ * If an element is OPTIONAL and you want to delete it, you must use
+ * the value=NULL and len=0. Using "pkix.asn":
+ *
+ * result=asn1_write_value(cert, "tbsCertificate.issuerUniqueID",
+ * NULL, 0);
+ *
+ * Description for each type:
+ *
+ * INTEGER: VALUE must contain a two's complement form integer.
+ *
+ * value[0]=0xFF , len=1 -> integer=-1.
+ * value[0]=0xFF value[1]=0xFF , len=2 -> integer=-1.
+ * value[0]=0x01 , len=1 -> integer= 1.
+ * value[0]=0x00 value[1]=0x01 , len=2 -> integer= 1.
+ * value="123" , len=0 -> integer= 123.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE must be the null terminated string "TRUE" or
+ * "FALSE" and LEN != 0.
+ *
+ * value="TRUE" , len=1 -> boolean=TRUE.
+ * value="FALSE" , len=1 -> boolean=FALSE.
+ *
+ * OBJECT IDENTIFIER: VALUE must be a null terminated string with
+ * each number separated by a dot (e.g. "1.2.3.543.1"). LEN != 0.
+ *
+ * value="1 2 840 10040 4 3" , len=1 -> OID=dsa-with-sha.
+ *
+ * UTCTime: VALUE must be a null terminated string in one of these
+ * formats: "YYMMDDhhmmssZ", "YYMMDDhhmmssZ",
+ * "YYMMDDhhmmss+hh'mm'", "YYMMDDhhmmss-hh'mm'",
+ * "YYMMDDhhmm+hh'mm'", or "YYMMDDhhmm-hh'mm'". LEN != 0.
+ *
+ * value="9801011200Z" , len=1 -> time=Jannuary 1st, 1998
+ * at 12h 00m Greenwich Mean Time
+ *
+ * GeneralizedTime: VALUE must be in one of this format:
+ * "YYYYMMDDhhmmss.sZ", "YYYYMMDDhhmmss.sZ",
+ * "YYYYMMDDhhmmss.s+hh'mm'", "YYYYMMDDhhmmss.s-hh'mm'",
+ * "YYYYMMDDhhmm+hh'mm'", or "YYYYMMDDhhmm-hh'mm'" where ss.s
+ * indicates the seconds with any precision like "10.1" or "01.02".
+ * LEN != 0
+ *
+ * value="2001010112001.12-0700" , len=1 -> time=Jannuary
+ * 1st, 2001 at 12h 00m 01.12s Pacific Daylight Time
+ *
+ * OCTET STRING: VALUE contains the octet string and LEN is the
+ * number of octets.
+ *
+ * value="$\backslash$x01$\backslash$x02$\backslash$x03" ,
+ * len=3 -> three bytes octet string
+ *
+ * GeneralString: VALUE contains the generalstring and LEN is the
+ * number of octets.
+ *
+ * value="$\backslash$x01$\backslash$x02$\backslash$x03" ,
+ * len=3 -> three bytes generalstring
+ *
+ * BIT STRING: VALUE contains the bit string organized by bytes and
+ * LEN is the number of bits.
+ *
+ * value="$\backslash$xCF" , len=6 -> bit string="110011" (six
+ * bits)
+ *
+ * CHOICE: if NAME indicates a choice type, VALUE must specify one of
+ * the alternatives with a null terminated string. LEN != 0. Using
+ * "pkix.asn"\:
+ *
+ * result=asn1_write_value(cert,
+ * "certificate1.tbsCertificate.subject", "rdnSequence",
+ * 1);
+ *
+ * ANY: VALUE indicates the der encoding of a structure. LEN != 0.
+ *
+ * SEQUENCE OF: VALUE must be the null terminated string "NEW" and
+ * LEN != 0. With this instruction another element is appended in
+ * the sequence. The name of this element will be "?1" if it's the
+ * first one, "?2" for the second and so on.
+ *
+ * Using "pkix.asn"\:
+ *
+ * result=asn1_write_value(cert,
+ * "certificate1.tbsCertificate.subject.rdnSequence", "NEW", 1);
+ *
+ * SET OF: the same as SEQUENCE OF. Using "pkix.asn":
+ *
+ * result=asn1_write_value(cert,
+ * "tbsCertificate.subject.rdnSequence.?LAST", "NEW", 1);
+ *
+ * Returns: %ASN1_SUCCESS if the value was set,
+ * %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element, and
+ * %ASN1_VALUE_NOT_VALID if @ivalue has a wrong format.
+ **/
+int
+asn1_write_value (asn1_node node_root, const char *name,
+ const void *ivalue, int len)
+{
+ asn1_node node, p, p2;
+ unsigned char *temp, *value_temp = NULL, *default_temp = NULL;
+ int len2, k, k2, negative;
+ size_t i;
+ const unsigned char *value = ivalue;
+ unsigned int type;
+
+ node = asn1_find_node (node_root, name);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ if ((node->type & CONST_OPTION) && (value == NULL) && (len == 0))
+ {
+ asn1_delete_structure (&node);
+ return ASN1_SUCCESS;
+ }
+
+ type = type_field (node->type);
+
+ if ((type == ASN1_ETYPE_SEQUENCE_OF || type == ASN1_ETYPE_SET_OF)
+ && (value == NULL) && (len == 0))
+ {
+ p = node->down;
+ while ((type_field (p->type) == ASN1_ETYPE_TAG)
+ || (type_field (p->type) == ASN1_ETYPE_SIZE))
+ p = p->right;
+
+ while (p->right)
+ asn1_delete_structure (&p->right);
+
+ return ASN1_SUCCESS;
+ }
+
+ /* Don't allow element deletion for other types */
+ if (value == NULL)
+ {
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ switch (type)
+ {
+ case ASN1_ETYPE_BOOLEAN:
+ if (!_asn1_strcmp (value, "TRUE"))
+ {
+ if (node->type & CONST_DEFAULT)
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if (p->type & CONST_TRUE)
+ _asn1_set_value (node, NULL, 0);
+ else
+ _asn1_set_value (node, "T", 1);
+ }
+ else
+ _asn1_set_value (node, "T", 1);
+ }
+ else if (!_asn1_strcmp (value, "FALSE"))
+ {
+ if (node->type & CONST_DEFAULT)
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if (p->type & CONST_FALSE)
+ _asn1_set_value (node, NULL, 0);
+ else
+ _asn1_set_value (node, "F", 1);
+ }
+ else
+ _asn1_set_value (node, "F", 1);
+ }
+ else
+ return ASN1_VALUE_NOT_VALID;
+ break;
+ case ASN1_ETYPE_INTEGER:
+ case ASN1_ETYPE_ENUMERATED:
+ if (len == 0)
+ {
+ if ((c_isdigit (value[0])) || (value[0] == '-'))
+ {
+ value_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+ if (value_temp == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+
+ _asn1_convert_integer (value, value_temp,
+ SIZEOF_UNSIGNED_LONG_INT, &len);
+ }
+ else
+ { /* is an identifier like v1 */
+ if (!(node->type & CONST_LIST))
+ return ASN1_VALUE_NOT_VALID;
+ p = node->down;
+ while (p)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_CONSTANT)
+ {
+ if (!_asn1_strcmp (p->name, value))
+ {
+ value_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+ if (value_temp == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+
+ _asn1_convert_integer (p->value,
+ value_temp,
+ SIZEOF_UNSIGNED_LONG_INT,
+ &len);
+ break;
+ }
+ }
+ p = p->right;
+ }
+ if (p == NULL)
+ return ASN1_VALUE_NOT_VALID;
+ }
+ }
+ else
+ { /* len != 0 */
+ value_temp = malloc (len);
+ if (value_temp == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+ memcpy (value_temp, value, len);
+ }
+
+ if (value_temp[0] & 0x80)
+ negative = 1;
+ else
+ negative = 0;
+
+ if (negative && (type_field (node->type) == ASN1_ETYPE_ENUMERATED))
+ {
+ free (value_temp);
+ return ASN1_VALUE_NOT_VALID;
+ }
+
+ for (k = 0; k < len - 1; k++)
+ if (negative && (value_temp[k] != 0xFF))
+ break;
+ else if (!negative && value_temp[k])
+ break;
+
+ if ((negative && !(value_temp[k] & 0x80)) ||
+ (!negative && (value_temp[k] & 0x80)))
+ k--;
+
+ _asn1_set_value_lv (node, value_temp + k, len - k);
+
+ if (node->type & CONST_DEFAULT)
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if ((c_isdigit (p->value[0])) || (p->value[0] == '-'))
+ {
+ default_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+ if (default_temp == NULL)
+ {
+ free (value_temp);
+ return ASN1_MEM_ALLOC_ERROR;
+ }
+
+ _asn1_convert_integer (p->value, default_temp,
+ SIZEOF_UNSIGNED_LONG_INT, &len2);
+ }
+ else
+ { /* is an identifier like v1 */
+ if (!(node->type & CONST_LIST))
+ {
+ free (value_temp);
+ return ASN1_VALUE_NOT_VALID;
+ }
+ p2 = node->down;
+ while (p2)
+ {
+ if (type_field (p2->type) == ASN1_ETYPE_CONSTANT)
+ {
+ if (!_asn1_strcmp (p2->name, p->value))
+ {
+ default_temp = malloc (SIZEOF_UNSIGNED_LONG_INT);
+ if (default_temp == NULL)
+ {
+ free (value_temp);
+ return ASN1_MEM_ALLOC_ERROR;
+ }
+
+ _asn1_convert_integer (p2->value,
+ default_temp,
+ SIZEOF_UNSIGNED_LONG_INT,
+ &len2);
+ break;
+ }
+ }
+ p2 = p2->right;
+ }
+ if (p2 == NULL)
+ {
+ free (value_temp);
+ return ASN1_VALUE_NOT_VALID;
+ }
+ }
+
+
+ if ((len - k) == len2)
+ {
+ for (k2 = 0; k2 < len2; k2++)
+ if (value_temp[k + k2] != default_temp[k2])
+ {
+ break;
+ }
+ if (k2 == len2)
+ _asn1_set_value (node, NULL, 0);
+ }
+ free (default_temp);
+ }
+ free (value_temp);
+ break;
+ case ASN1_ETYPE_OBJECT_ID:
+ for (i = 0; i < _asn1_strlen (value); i++)
+ if ((!c_isdigit (value[i])) && (value[i] != '.') && (value[i] != '+'))
+ return ASN1_VALUE_NOT_VALID;
+ if (node->type & CONST_DEFAULT)
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if (!_asn1_strcmp (value, p->value))
+ {
+ _asn1_set_value (node, NULL, 0);
+ break;
+ }
+ }
+ _asn1_set_value (node, value, _asn1_strlen (value) + 1);
+ break;
+ case ASN1_ETYPE_UTC_TIME:
+ {
+ len = _asn1_strlen (value);
+ if (len < 11)
+ return ASN1_VALUE_NOT_VALID;
+ for (k = 0; k < 10; k++)
+ if (!c_isdigit (value[k]))
+ return ASN1_VALUE_NOT_VALID;
+ switch (len)
+ {
+ case 11:
+ if (value[10] != 'Z')
+ return ASN1_VALUE_NOT_VALID;
+ break;
+ case 13:
+ if ((!c_isdigit (value[10])) || (!c_isdigit (value[11])) ||
+ (value[12] != 'Z'))
+ return ASN1_VALUE_NOT_VALID;
+ break;
+ case 15:
+ if ((value[10] != '+') && (value[10] != '-'))
+ return ASN1_VALUE_NOT_VALID;
+ for (k = 11; k < 15; k++)
+ if (!c_isdigit (value[k]))
+ return ASN1_VALUE_NOT_VALID;
+ break;
+ case 17:
+ if ((!c_isdigit (value[10])) || (!c_isdigit (value[11])))
+ return ASN1_VALUE_NOT_VALID;
+ if ((value[12] != '+') && (value[12] != '-'))
+ return ASN1_VALUE_NOT_VALID;
+ for (k = 13; k < 17; k++)
+ if (!c_isdigit (value[k]))
+ return ASN1_VALUE_NOT_VALID;
+ break;
+ default:
+ return ASN1_VALUE_NOT_FOUND;
+ }
+ _asn1_set_value (node, value, len);
+ }
+ break;
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ len = _asn1_strlen (value);
+ _asn1_set_value (node, value, len);
+ break;
+ case ASN1_ETYPE_OCTET_STRING:
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ if (len == 0)
+ len = _asn1_strlen (value);
+ _asn1_set_value_lv (node, value, len);
+ break;
+ case ASN1_ETYPE_BIT_STRING:
+ if (len == 0)
+ len = _asn1_strlen (value);
+ asn1_length_der ((len >> 3) + 2, NULL, &len2);
+ temp = malloc ((len >> 3) + 2 + len2);
+ if (temp == NULL)
+ return ASN1_MEM_ALLOC_ERROR;
+
+ asn1_bit_der (value, len, temp, &len2);
+ _asn1_set_value_m (node, temp, len2);
+ temp = NULL;
+ break;
+ case ASN1_ETYPE_CHOICE:
+ p = node->down;
+ while (p)
+ {
+ if (!_asn1_strcmp (p->name, value))
+ {
+ p2 = node->down;
+ while (p2)
+ {
+ if (p2 != p)
+ {
+ asn1_delete_structure (&p2);
+ p2 = node->down;
+ }
+ else
+ p2 = p2->right;
+ }
+ break;
+ }
+ p = p->right;
+ }
+ if (!p)
+ return ASN1_ELEMENT_NOT_FOUND;
+ break;
+ case ASN1_ETYPE_ANY:
+ _asn1_set_value_lv (node, value, len);
+ break;
+ case ASN1_ETYPE_SEQUENCE_OF:
+ case ASN1_ETYPE_SET_OF:
+ if (_asn1_strcmp (value, "NEW"))
+ return ASN1_VALUE_NOT_VALID;
+ _asn1_append_sequence_set (node, NULL);
+ break;
+ default:
+ return ASN1_ELEMENT_NOT_FOUND;
+ break;
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+#define PUT_VALUE( ptr, ptr_size, data, data_size) \
+ *len = data_size; \
+ if (ptr_size < data_size) { \
+ return ASN1_MEM_ERROR; \
+ } else { \
+ if (ptr && data_size > 0) \
+ memcpy (ptr, data, data_size); \
+ }
+
+#define PUT_STR_VALUE( ptr, ptr_size, data) \
+ *len = _asn1_strlen (data) + 1; \
+ if (ptr_size < *len) { \
+ return ASN1_MEM_ERROR; \
+ } else { \
+ /* this strcpy is checked */ \
+ if (ptr) { \
+ _asn1_strcpy (ptr, data); \
+ } \
+ }
+
+#define PUT_AS_STR_VALUE( ptr, ptr_size, data, data_size) \
+ *len = data_size + 1; \
+ if (ptr_size < *len) { \
+ return ASN1_MEM_ERROR; \
+ } else { \
+ /* this strcpy is checked */ \
+ if (ptr) { \
+ if (data_size > 0) \
+ memcpy (ptr, data, data_size); \
+ ptr[data_size] = 0; \
+ } \
+ }
+
+#define ADD_STR_VALUE( ptr, ptr_size, data) \
+ *len += _asn1_strlen(data); \
+ if (ptr_size < (int) *len) { \
+ (*len)++; \
+ return ASN1_MEM_ERROR; \
+ } else { \
+ /* this strcat is checked */ \
+ if (ptr) _asn1_strcat (ptr, data); \
+ }
+
+/**
+ * asn1_read_value:
+ * @root: pointer to a structure.
+ * @name: the name of the element inside a structure that you want to read.
+ * @ivalue: vector that will contain the element's content, must be a
+ * pointer to memory cells already allocated (may be %NULL).
+ * @len: number of bytes of *value: value[0]..value[len-1]. Initialy
+ * holds the sizeof value.
+ *
+ * Returns the value of one element inside a structure.
+ * If an element is OPTIONAL and this returns
+ * %ASN1_ELEMENT_NOT_FOUND, it means that this element wasn't present
+ * in the der encoding that created the structure. The first element
+ * of a SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and
+ * so on. If the @root provided is a node to specific sequence element,
+ * then the keyword "?CURRENT" is also acceptable and indicates the
+ * current sequence element of this node.
+ *
+ * Note that there can be valid values with length zero. In these case
+ * this function will succeed and @len will be zero.
+ *
+ * INTEGER: VALUE will contain a two's complement form integer.
+ *
+ * integer=-1 -> value[0]=0xFF , len=1.
+ * integer=1 -> value[0]=0x01 , len=1.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE will be the null terminated string "TRUE" or
+ * "FALSE" and LEN=5 or LEN=6.
+ *
+ * OBJECT IDENTIFIER: VALUE will be a null terminated string with
+ * each number separated by a dot (i.e. "1.2.3.543.1").
+ *
+ * LEN = strlen(VALUE)+1
+ *
+ * UTCTime: VALUE will be a null terminated string in one of these
+ * formats: "YYMMDDhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'".
+ * LEN=strlen(VALUE)+1.
+ *
+ * GeneralizedTime: VALUE will be a null terminated string in the
+ * same format used to set the value.
+ *
+ * OCTET STRING: VALUE will contain the octet string and LEN will be
+ * the number of octets.
+ *
+ * GeneralString: VALUE will contain the generalstring and LEN will
+ * be the number of octets.
+ *
+ * BIT STRING: VALUE will contain the bit string organized by bytes
+ * and LEN will be the number of bits.
+ *
+ * CHOICE: If NAME indicates a choice type, VALUE will specify the
+ * alternative selected.
+ *
+ * ANY: If NAME indicates an any type, VALUE will indicate the DER
+ * encoding of the structure actually used.
+ *
+ * Returns: %ASN1_SUCCESS if value is returned,
+ * %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element,
+ * %ASN1_VALUE_NOT_FOUND if there isn't any value for the element
+ * selected, and %ASN1_MEM_ERROR if The value vector isn't big enough
+ * to store the result, and in this case @len will contain the number of
+ * bytes needed. On the occasion that the stored data are of zero-length
+ * this function may return %ASN1_SUCCESS even if the provided @len is zero.
+ **/
+int
+asn1_read_value (asn1_node_const root, const char *name, void *ivalue,
+ int *len)
+{
+ return asn1_read_value_type (root, name, ivalue, len, NULL);
+}
+
+/**
+ * asn1_read_value_type:
+ * @root: pointer to a structure.
+ * @name: the name of the element inside a structure that you want to read.
+ * @ivalue: vector that will contain the element's content, must be a
+ * pointer to memory cells already allocated (may be %NULL).
+ * @len: number of bytes of *value: value[0]..value[len-1]. Initialy
+ * holds the sizeof value.
+ * @etype: The type of the value read (ASN1_ETYPE)
+ *
+ * Returns the type and value of one element inside a structure.
+ * If an element is OPTIONAL and this returns
+ * %ASN1_ELEMENT_NOT_FOUND, it means that this element wasn't present
+ * in the der encoding that created the structure. The first element
+ * of a SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and
+ * so on. If the @root provided is a node to specific sequence element,
+ * then the keyword "?CURRENT" is also acceptable and indicates the
+ * current sequence element of this node.
+ *
+ * Note that there can be valid values with length zero. In these case
+ * this function will succeed and @len will be zero.
+ *
+ *
+ * INTEGER: VALUE will contain a two's complement form integer.
+ *
+ * integer=-1 -> value[0]=0xFF , len=1.
+ * integer=1 -> value[0]=0x01 , len=1.
+ *
+ * ENUMERATED: As INTEGER (but only with not negative numbers).
+ *
+ * BOOLEAN: VALUE will be the null terminated string "TRUE" or
+ * "FALSE" and LEN=5 or LEN=6.
+ *
+ * OBJECT IDENTIFIER: VALUE will be a null terminated string with
+ * each number separated by a dot (i.e. "1.2.3.543.1").
+ *
+ * LEN = strlen(VALUE)+1
+ *
+ * UTCTime: VALUE will be a null terminated string in one of these
+ * formats: "YYMMDDhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'".
+ * LEN=strlen(VALUE)+1.
+ *
+ * GeneralizedTime: VALUE will be a null terminated string in the
+ * same format used to set the value.
+ *
+ * OCTET STRING: VALUE will contain the octet string and LEN will be
+ * the number of octets.
+ *
+ * GeneralString: VALUE will contain the generalstring and LEN will
+ * be the number of octets.
+ *
+ * BIT STRING: VALUE will contain the bit string organized by bytes
+ * and LEN will be the number of bits.
+ *
+ * CHOICE: If NAME indicates a choice type, VALUE will specify the
+ * alternative selected.
+ *
+ * ANY: If NAME indicates an any type, VALUE will indicate the DER
+ * encoding of the structure actually used.
+ *
+ * Returns: %ASN1_SUCCESS if value is returned,
+ * %ASN1_ELEMENT_NOT_FOUND if @name is not a valid element,
+ * %ASN1_VALUE_NOT_FOUND if there isn't any value for the element
+ * selected, and %ASN1_MEM_ERROR if The value vector isn't big enough
+ * to store the result, and in this case @len will contain the number of
+ * bytes needed. On the occasion that the stored data are of zero-length
+ * this function may return %ASN1_SUCCESS even if the provided @len is zero.
+ **/
+int
+asn1_read_value_type (asn1_node_const root, const char *name, void *ivalue,
+ int *len, unsigned int *etype)
+{
+ asn1_node_const node, p, p2;
+ int len2, len3, result;
+ int value_size = *len;
+ unsigned char *value = ivalue;
+ unsigned type;
+
+ node = asn1_find_node (root, name);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ type = type_field (node->type);
+
+ if ((type != ASN1_ETYPE_NULL) &&
+ (type != ASN1_ETYPE_CHOICE) &&
+ !(node->type & CONST_DEFAULT) && !(node->type & CONST_ASSIGN) &&
+ (node->value == NULL))
+ return ASN1_VALUE_NOT_FOUND;
+
+ if (etype)
+ *etype = type;
+ switch (type)
+ {
+ case ASN1_ETYPE_NULL:
+ PUT_STR_VALUE (value, value_size, "NULL");
+ break;
+ case ASN1_ETYPE_BOOLEAN:
+ if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if (p->type & CONST_TRUE)
+ {
+ PUT_STR_VALUE (value, value_size, "TRUE");
+ }
+ else
+ {
+ PUT_STR_VALUE (value, value_size, "FALSE");
+ }
+ }
+ else if (node->value[0] == 'T')
+ {
+ PUT_STR_VALUE (value, value_size, "TRUE");
+ }
+ else
+ {
+ PUT_STR_VALUE (value, value_size, "FALSE");
+ }
+ break;
+ case ASN1_ETYPE_INTEGER:
+ case ASN1_ETYPE_ENUMERATED:
+ if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ if ((c_isdigit (p->value[0])) || (p->value[0] == '-')
+ || (p->value[0] == '+'))
+ {
+ result = _asn1_convert_integer
+ (p->value, value, value_size, len);
+ if (result != ASN1_SUCCESS)
+ return result;
+ }
+ else
+ { /* is an identifier like v1 */
+ p2 = node->down;
+ while (p2)
+ {
+ if (type_field (p2->type) == ASN1_ETYPE_CONSTANT)
+ {
+ if (!_asn1_strcmp (p2->name, p->value))
+ {
+ result = _asn1_convert_integer
+ (p2->value, value, value_size, len);
+ if (result != ASN1_SUCCESS)
+ return result;
+ break;
+ }
+ }
+ p2 = p2->right;
+ }
+ }
+ }
+ else
+ {
+ len2 = -1;
+ result = asn1_get_octet_der
+ (node->value, node->value_len, &len2, value, value_size, len);
+ if (result != ASN1_SUCCESS)
+ return result;
+ }
+ break;
+ case ASN1_ETYPE_OBJECT_ID:
+ if (node->type & CONST_ASSIGN)
+ {
+ *len = 0;
+ if (value)
+ value[0] = 0;
+ p = node->down;
+ while (p)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_CONSTANT)
+ {
+ ADD_STR_VALUE (value, value_size, p->value);
+ if (p->right)
+ {
+ ADD_STR_VALUE (value, value_size, ".");
+ }
+ }
+ p = p->right;
+ }
+ (*len)++;
+ }
+ else if ((node->type & CONST_DEFAULT) && (node->value == NULL))
+ {
+ p = node->down;
+ while (type_field (p->type) != ASN1_ETYPE_DEFAULT)
+ p = p->right;
+ PUT_STR_VALUE (value, value_size, p->value);
+ }
+ else
+ {
+ PUT_STR_VALUE (value, value_size, node->value);
+ }
+ break;
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ case ASN1_ETYPE_UTC_TIME:
+ PUT_AS_STR_VALUE (value, value_size, node->value, node->value_len);
+ break;
+ case ASN1_ETYPE_OCTET_STRING:
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ len2 = -1;
+ result = asn1_get_octet_der
+ (node->value, node->value_len, &len2, value, value_size, len);
+ if (result != ASN1_SUCCESS)
+ return result;
+ break;
+ case ASN1_ETYPE_BIT_STRING:
+ len2 = -1;
+ result = asn1_get_bit_der
+ (node->value, node->value_len, &len2, value, value_size, len);
+ if (result != ASN1_SUCCESS)
+ return result;
+ break;
+ case ASN1_ETYPE_CHOICE:
+ PUT_STR_VALUE (value, value_size, node->down->name);
+ break;
+ case ASN1_ETYPE_ANY:
+ len3 = -1;
+ len2 = asn1_get_length_der (node->value, node->value_len, &len3);
+ if (len2 < 0)
+ return ASN1_DER_ERROR;
+ PUT_VALUE (value, value_size, node->value + len3, len2);
+ break;
+ default:
+ return ASN1_ELEMENT_NOT_FOUND;
+ break;
+ }
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_read_tag:
+ * @root: pointer to a structure
+ * @name: the name of the element inside a structure.
+ * @tagValue: variable that will contain the TAG value.
+ * @classValue: variable that will specify the TAG type.
+ *
+ * Returns the TAG and the CLASS of one element inside a structure.
+ * CLASS can have one of these constants: %ASN1_CLASS_APPLICATION,
+ * %ASN1_CLASS_UNIVERSAL, %ASN1_CLASS_PRIVATE or
+ * %ASN1_CLASS_CONTEXT_SPECIFIC.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ * @name is not a valid element.
+ **/
+int
+asn1_read_tag (asn1_node_const root, const char *name, int *tagValue,
+ int *classValue)
+{
+ asn1_node node, p, pTag;
+
+ node = asn1_find_node (root, name);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node->down;
+
+ /* pTag will points to the IMPLICIT TAG */
+ pTag = NULL;
+ if (node->type & CONST_TAG)
+ {
+ while (p)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_TAG)
+ {
+ if ((p->type & CONST_IMPLICIT) && (pTag == NULL))
+ pTag = p;
+ else if (p->type & CONST_EXPLICIT)
+ pTag = NULL;
+ }
+ p = p->right;
+ }
+ }
+
+ if (pTag)
+ {
+ *tagValue = _asn1_strtoul (pTag->value, NULL, 10);
+
+ if (pTag->type & CONST_APPLICATION)
+ *classValue = ASN1_CLASS_APPLICATION;
+ else if (pTag->type & CONST_UNIVERSAL)
+ *classValue = ASN1_CLASS_UNIVERSAL;
+ else if (pTag->type & CONST_PRIVATE)
+ *classValue = ASN1_CLASS_PRIVATE;
+ else
+ *classValue = ASN1_CLASS_CONTEXT_SPECIFIC;
+ }
+ else
+ {
+ unsigned type = type_field (node->type);
+ *classValue = ASN1_CLASS_UNIVERSAL;
+
+ switch (type)
+ {
+ CASE_HANDLED_ETYPES:
+ *tagValue = _asn1_tags[type].tag;
+ break;
+ case ASN1_ETYPE_TAG:
+ case ASN1_ETYPE_CHOICE:
+ case ASN1_ETYPE_ANY:
+ *tagValue = -1;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return ASN1_SUCCESS;
+}
+
+/**
+ * asn1_read_node_value:
+ * @node: pointer to a node.
+ * @data: a point to a asn1_data_node_st
+ *
+ * Returns the value a data node inside a asn1_node structure.
+ * The data returned should be handled as constant values.
+ *
+ * Returns: %ASN1_SUCCESS if the node exists.
+ **/
+int
+asn1_read_node_value (asn1_node_const node, asn1_data_node_st * data)
+{
+ data->name = node->name;
+ data->value = node->value;
+ data->value_len = node->value_len;
+ data->type = type_field (node->type);
+
+ return ASN1_SUCCESS;
+}
diff --git a/grub-core/lib/libtasn1/lib/element.h b/grub-core/lib/libtasn1/lib/element.h
new file mode 100644
index 000000000..8dd0ceba8
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/element.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef _ELEMENT_H
+# define _ELEMENT_H
+
+
+struct node_tail_cache_st
+{
+ asn1_node head; /* the first element of the sequence */
+ asn1_node tail;
+};
+
+int _asn1_append_sequence_set (asn1_node node,
+ struct node_tail_cache_st *pcached);
+
+int _asn1_convert_integer (const unsigned char *value,
+ unsigned char *value_out,
+ int value_out_size, int *len);
+
+void _asn1_hierarchical_name (asn1_node_const node, char *name,
+ int name_size);
+
+#endif
diff --git a/grub-core/lib/libtasn1/lib/errors.c b/grub-core/lib/libtasn1/lib/errors.c
new file mode 100644
index 000000000..aef5dfe6f
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/errors.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <int.h>
+#ifdef STDC_HEADERS
+# include <stdarg.h>
+#endif
+
+#define LIBTASN1_ERROR_ENTRY(name) { #name, name }
+
+struct libtasn1_error_entry
+{
+ const char *name;
+ int number;
+};
+typedef struct libtasn1_error_entry libtasn1_error_entry;
+
+static const libtasn1_error_entry error_algorithms[] = {
+ LIBTASN1_ERROR_ENTRY (ASN1_SUCCESS),
+ LIBTASN1_ERROR_ENTRY (ASN1_FILE_NOT_FOUND),
+ LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_FOUND),
+ LIBTASN1_ERROR_ENTRY (ASN1_IDENTIFIER_NOT_FOUND),
+ LIBTASN1_ERROR_ENTRY (ASN1_DER_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_FOUND),
+ LIBTASN1_ERROR_ENTRY (ASN1_GENERIC_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_VALID),
+ LIBTASN1_ERROR_ENTRY (ASN1_TAG_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_TAG_IMPLICIT),
+ LIBTASN1_ERROR_ENTRY (ASN1_ERROR_TYPE_ANY),
+ LIBTASN1_ERROR_ENTRY (ASN1_SYNTAX_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_MEM_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_MEM_ALLOC_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_DER_OVERFLOW),
+ LIBTASN1_ERROR_ENTRY (ASN1_NAME_TOO_LONG),
+ LIBTASN1_ERROR_ENTRY (ASN1_ARRAY_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_EMPTY),
+ LIBTASN1_ERROR_ENTRY (ASN1_TIME_ENCODING_ERROR),
+ LIBTASN1_ERROR_ENTRY (ASN1_RECURSION),
+ {0, 0}
+};
+
+/**
+ * asn1_perror:
+ * @error: is an error returned by a libtasn1 function.
+ *
+ * Prints a string to stderr with a description of an error. This
+ * function is like perror(). The only difference is that it accepts
+ * an error returned by a libtasn1 function.
+ *
+ * Since: 1.6
+ **/
+void
+asn1_perror (int error)
+{
+ const char *str = asn1_strerror (error);
+ fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");
+}
+
+/**
+ * asn1_strerror:
+ * @error: is an error returned by a libtasn1 function.
+ *
+ * Returns a string with a description of an error. This function is
+ * similar to strerror. The only difference is that it accepts an
+ * error (number) returned by a libtasn1 function.
+ *
+ * Returns: Pointer to static zero-terminated string describing error
+ * code.
+ *
+ * Since: 1.6
+ **/
+const char *
+asn1_strerror (int error)
+{
+ const libtasn1_error_entry *p;
+
+ for (p = error_algorithms; p->name != NULL; p++)
+ if (p->number == error)
+ return p->name + sizeof ("ASN1_") - 1;
+
+ return NULL;
+}
diff --git a/grub-core/lib/libtasn1/lib/gstr.c b/grub-core/lib/libtasn1/lib/gstr.c
new file mode 100644
index 000000000..eef419554
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/gstr.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <int.h>
+#include "gstr.h"
+
+/* These function are like strcat, strcpy. They only
+ * do bounds checking (they shouldn't cause buffer overruns),
+ * and they always produce null terminated strings.
+ *
+ * They should be used only with null terminated strings.
+ */
+void
+_asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
+{
+ size_t str_size = strlen (src);
+ size_t dest_size = strlen (dest);
+
+ if (dest_tot_size - dest_size > str_size)
+ {
+ strcat (dest, src);
+ }
+ else
+ {
+ if (dest_tot_size > dest_size)
+ {
+ strncat (dest, src, (dest_tot_size - dest_size) - 1);
+ dest[dest_tot_size - 1] = 0;
+ }
+ }
+}
+
+/* Returns the bytes copied (not including the null terminator) */
+unsigned int
+_asn1_str_cpy (char *dest, size_t dest_tot_size, const char *src)
+{
+ size_t str_size = strlen (src);
+
+ if (dest_tot_size > str_size)
+ {
+ strcpy (dest, src);
+ return str_size;
+ }
+ else
+ {
+ if (dest_tot_size > 0)
+ {
+ str_size = dest_tot_size - 1;
+ memcpy (dest, src, str_size);
+ dest[str_size] = 0;
+ return str_size;
+ }
+ else
+ return 0;
+ }
+}
diff --git a/grub-core/lib/libtasn1/lib/gstr.h b/grub-core/lib/libtasn1/lib/gstr.h
new file mode 100644
index 000000000..99be6c4af
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/gstr.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef GSTR_H
+# define GSTR_H
+
+unsigned int _asn1_str_cpy (char *dest, size_t dest_tot_size,
+ const char *src);
+void _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src);
+
+# define Estrcpy(x,y) _asn1_str_cpy(x,ASN1_MAX_ERROR_DESCRIPTION_SIZE,y)
+# define Estrcat(x,y) _asn1_str_cat(x,ASN1_MAX_ERROR_DESCRIPTION_SIZE,y)
+
+inline static void
+safe_memset (void *data, int c, size_t size)
+{
+ volatile unsigned volatile_zero = 0;
+ volatile char *vdata = (volatile char *) data;
+
+ /* This is based on a nice trick for safe memset,
+ * sent by David Jacobson in the openssl-dev mailing list.
+ */
+
+ if (size > 0)
+ do
+ {
+ memset (data, c, size);
+ }
+ while (vdata[volatile_zero] != c);
+}
+
+#endif /* GSTR_H */
diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
new file mode 100644
index 000000000..d94d51c8c
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/int.h
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef INT_H
+# define INT_H
+
+# ifdef HAVE_CONFIG_H
+# include <config.h>
+# endif
+
+# include <string.h>
+# include <stdlib.h>
+# include <stdio.h>
+# include <stdint.h>
+
+# ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+# endif
+
+# include <libtasn1.h>
+
+# define ASN1_SMALL_VALUE_SIZE 16
+
+/* This structure is also in libtasn1.h, but then contains less
+ fields. You cannot make any modifications to these first fields
+ without breaking ABI. */
+struct asn1_node_st
+{
+ /* public fields: */
+ char name[ASN1_MAX_NAME_SIZE + 1]; /* Node name */
+ unsigned int name_hash;
+ unsigned int type; /* Node type */
+ unsigned char *value; /* Node value */
+ int value_len;
+ asn1_node down; /* Pointer to the son node */
+ asn1_node right; /* Pointer to the brother node */
+ asn1_node left; /* Pointer to the next list element */
+ /* private fields: */
+ unsigned char small_value[ASN1_SMALL_VALUE_SIZE]; /* For small values */
+
+ /* values used during decoding/coding */
+ int tmp_ival;
+ unsigned start; /* the start of the DER sequence - if decoded */
+ unsigned end; /* the end of the DER sequence - if decoded */
+};
+
+typedef struct tag_and_class_st
+{
+ unsigned tag;
+ unsigned class;
+ const char *desc;
+} tag_and_class_st;
+
+/* the types that are handled in _asn1_tags */
+# define CASE_HANDLED_ETYPES \
+ case ASN1_ETYPE_NULL: \
+ case ASN1_ETYPE_BOOLEAN: \
+ case ASN1_ETYPE_INTEGER: \
+ case ASN1_ETYPE_ENUMERATED: \
+ case ASN1_ETYPE_OBJECT_ID: \
+ case ASN1_ETYPE_OCTET_STRING: \
+ case ASN1_ETYPE_GENERALSTRING: \
+ case ASN1_ETYPE_NUMERIC_STRING: \
+ case ASN1_ETYPE_IA5_STRING: \
+ case ASN1_ETYPE_TELETEX_STRING: \
+ case ASN1_ETYPE_PRINTABLE_STRING: \
+ case ASN1_ETYPE_UNIVERSAL_STRING: \
+ case ASN1_ETYPE_BMP_STRING: \
+ case ASN1_ETYPE_UTF8_STRING: \
+ case ASN1_ETYPE_VISIBLE_STRING: \
+ case ASN1_ETYPE_BIT_STRING: \
+ case ASN1_ETYPE_SEQUENCE: \
+ case ASN1_ETYPE_SEQUENCE_OF: \
+ case ASN1_ETYPE_SET: \
+ case ASN1_ETYPE_UTC_TIME: \
+ case ASN1_ETYPE_GENERALIZED_TIME: \
+ case ASN1_ETYPE_SET_OF
+
+# define ETYPE_TAG(etype) (_asn1_tags[etype].tag)
+# define ETYPE_CLASS(etype) (_asn1_tags[etype].class)
+# define ETYPE_OK(etype) (((etype) != ASN1_ETYPE_INVALID && \
+ (etype) < _asn1_tags_size && \
+ _asn1_tags[(etype)].desc != NULL)?1:0)
+
+# define ETYPE_IS_STRING(etype) ((etype == ASN1_ETYPE_GENERALSTRING || \
+ etype == ASN1_ETYPE_NUMERIC_STRING || etype == ASN1_ETYPE_IA5_STRING || \
+ etype == ASN1_ETYPE_TELETEX_STRING || etype == ASN1_ETYPE_PRINTABLE_STRING || \
+ etype == ASN1_ETYPE_UNIVERSAL_STRING || etype == ASN1_ETYPE_BMP_STRING || \
+ etype == ASN1_ETYPE_UTF8_STRING || etype == ASN1_ETYPE_VISIBLE_STRING || \
+ etype == ASN1_ETYPE_OCTET_STRING)?1:0)
+
+extern unsigned int _asn1_tags_size;
+extern const tag_and_class_st _asn1_tags[];
+
+# define _asn1_strlen(s) strlen((const char *) s)
+# define _asn1_strtol(n,e,b) strtol((const char *) n, e, b)
+# define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
+# define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
+# define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
+# define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
+
+# if SIZEOF_UNSIGNED_LONG_INT == 8
+# define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
+# else
+# define _asn1_strtou64(n,e,b) strtoull((const char *) n, e, b)
+# endif
+
+# define MAX_LOG_SIZE 1024 /* maximum number of characters of a log message */
+
+/* Define used for visiting trees. */
+# define UP 1
+# define RIGHT 2
+# define DOWN 3
+
+/***********************************************************************/
+/* List of constants to better specify the type of typedef asn1_node_st. */
+/***********************************************************************/
+/* Used with TYPE_TAG */
+# define CONST_UNIVERSAL (1U<<8)
+# define CONST_PRIVATE (1U<<9)
+# define CONST_APPLICATION (1U<<10)
+# define CONST_EXPLICIT (1U<<11)
+# define CONST_IMPLICIT (1U<<12)
+
+# define CONST_TAG (1U<<13) /* Used in ASN.1 assignement */
+# define CONST_OPTION (1U<<14)
+# define CONST_DEFAULT (1U<<15)
+# define CONST_TRUE (1U<<16)
+# define CONST_FALSE (1U<<17)
+
+# define CONST_LIST (1U<<18) /* Used with TYPE_INTEGER and TYPE_BIT_STRING */
+# define CONST_MIN_MAX (1U<<19)
+
+# define CONST_1_PARAM (1U<<20)
+
+# define CONST_SIZE (1U<<21)
+
+# define CONST_DEFINED_BY (1U<<22)
+
+/* Those two are deprecated and used for backwards compatibility */
+# define CONST_GENERALIZED (1U<<23)
+# define CONST_UTC (1U<<24)
+
+/* #define CONST_IMPORTS (1U<<25) */
+
+# define CONST_NOT_USED (1U<<26)
+# define CONST_SET (1U<<27)
+# define CONST_ASSIGN (1U<<28)
+
+# define CONST_DOWN (1U<<29)
+# define CONST_RIGHT (1U<<30)
+
+
+# define ASN1_ETYPE_TIME 17
+/****************************************/
+/* Returns the first 8 bits. */
+/* Used with the field type of asn1_node_st */
+/****************************************/
+inline static unsigned int
+type_field (unsigned int ntype)
+{
+ return (ntype & 0xff);
+}
+
+/* To convert old types from a static structure */
+inline static unsigned int
+convert_old_type (unsigned int ntype)
+{
+ unsigned int type = ntype & 0xff;
+ if (type == ASN1_ETYPE_TIME)
+ {
+ if (ntype & CONST_UTC)
+ type = ASN1_ETYPE_UTC_TIME;
+ else
+ type = ASN1_ETYPE_GENERALIZED_TIME;
+
+ ntype &= ~(CONST_UTC | CONST_GENERALIZED);
+ ntype &= 0xffffff00;
+ ntype |= type;
+
+ return ntype;
+ }
+ else
+ return ntype;
+}
+
+static inline void *
+_asn1_realloc (void *ptr, size_t size)
+{
+ void *ret;
+
+ if (size == 0)
+ return ptr;
+
+ ret = realloc (ptr, size);
+ if (ret == NULL)
+ {
+ free (ptr);
+ }
+ return ret;
+}
+
+#endif /* INT_H */
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c b/grub-core/lib/libtasn1/lib/parser_aux.c
new file mode 100644
index 000000000..c05bd2339
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/parser_aux.c
@@ -0,0 +1,1178 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#include <limits.h> /* WORD_BIT */
+
+#include "int.h"
+#include "parser_aux.h"
+#include "gstr.h"
+#include "structure.h"
+#include "element.h"
+#include "c-ctype.h"
+
+char _asn1_identifierMissing[ASN1_MAX_NAME_SIZE + 1]; /* identifier name not found */
+
+/* Return a hash of the N bytes of X using the method described by
+ Bruno Haible in https://www.haible.de/bruno/hashfunc.html.
+ Note that while many hash functions reduce their result via modulo
+ to a 0..table_size-1 range, this function does not do that.
+
+ This implementation has been changed from size_t -> unsigned int. */
+
+#ifdef __clang__
+__attribute__((no_sanitize ("integer")))
+#endif
+ _GL_ATTRIBUTE_PURE static unsigned int _asn1_hash_name (const char *x)
+{
+ const unsigned char *s = (unsigned char *) x;
+ unsigned h = 0;
+
+ while (*s)
+ h = (*s++) + ((h << 9) | (h >> (WORD_BIT - 9)));
+
+ return h;
+}
+
+/******************************************************/
+/* Function : _asn1_add_static_node */
+/* Description: creates a new NODE_ASN element and */
+/* puts it in the list pointed by e_list. */
+/* Parameters: */
+/* e_list: of type list_type; must be NULL initially */
+/* type: type of the new element (see ASN1_ETYPE_ */
+/* and CONST_ constants). */
+/* Return: pointer to the new element. */
+/******************************************************/
+asn1_node
+_asn1_add_static_node (list_type ** e_list, unsigned int type)
+{
+ list_type *p;
+ asn1_node punt;
+
+ punt = calloc (1, sizeof (struct asn1_node_st));
+ if (punt == NULL)
+ return NULL;
+
+ p = malloc (sizeof (list_type));
+ if (p == NULL)
+ {
+ free (punt);
+ return NULL;
+ }
+
+ p->node = punt;
+ p->next = *e_list;
+ *e_list = p;
+
+ punt->type = type;
+
+ return punt;
+}
+
+static int
+_asn1_add_static_node2 (list_type ** e_list, asn1_node node)
+{
+ list_type *p;
+
+ p = malloc (sizeof (list_type));
+ if (p == NULL)
+ {
+ return -1;
+ }
+
+ p->node = node;
+ p->next = *e_list;
+ *e_list = p;
+
+ return 0;
+}
+
+/**
+ * asn1_find_node:
+ * @pointer: NODE_ASN element pointer.
+ * @name: null terminated string with the element's name to find.
+ *
+ * Searches for an element called @name starting from @pointer. The
+ * name is composed by different identifiers separated by dots. When
+ * *@pointer has a name, the first identifier must be the name of
+ * *@pointer, otherwise it must be the name of one child of *@pointer.
+ *
+ * Returns: the search result, or %NULL if not found.
+ **/
+asn1_node
+asn1_find_node (asn1_node_const pointer, const char *name)
+{
+ asn1_node_const p;
+ char *n_end, n[ASN1_MAX_NAME_SIZE + 1];
+ const char *n_start;
+ unsigned int nsize;
+ unsigned int nhash;
+
+ if (pointer == NULL)
+ return NULL;
+
+ if (name == NULL)
+ return NULL;
+
+ p = pointer;
+ n_start = name;
+
+ if (name[0] == '?' && name[1] == 'C' && p->name[0] == '?')
+ { /* ?CURRENT */
+ n_start = strchr (n_start, '.');
+ if (n_start)
+ n_start++;
+ }
+ else if (p->name[0] != 0)
+ { /* has *pointer got a name ? */
+ n_end = strchr (n_start, '.'); /* search the first dot */
+ if (n_end)
+ {
+ nsize = n_end - n_start;
+ if (nsize >= sizeof (n))
+ return NULL;
+
+ memcpy (n, n_start, nsize);
+ n[nsize] = 0;
+ n_start = n_end;
+ n_start++;
+
+ nhash = _asn1_hash_name (n);
+ }
+ else
+ {
+ _asn1_str_cpy (n, sizeof (n), n_start);
+ nhash = _asn1_hash_name (n);
+
+ n_start = NULL;
+ }
+
+ while (p)
+ {
+ if (nhash == p->name_hash && (!strcmp (p->name, n)))
+ break;
+ else
+ p = p->right;
+ } /* while */
+
+ if (p == NULL)
+ return NULL;
+ }
+ else
+ { /* *pointer doesn't have a name */
+ if (n_start[0] == 0)
+ return (asn1_node) p;
+ }
+
+ while (n_start)
+ { /* Has the end of NAME been reached? */
+ n_end = strchr (n_start, '.'); /* search the next dot */
+ if (n_end)
+ {
+ nsize = n_end - n_start;
+ if (nsize >= sizeof (n))
+ return NULL;
+
+ memcpy (n, n_start, nsize);
+ n[nsize] = 0;
+ n_start = n_end;
+ n_start++;
+
+ nhash = _asn1_hash_name (n);
+ }
+ else
+ {
+ _asn1_str_cpy (n, sizeof (n), n_start);
+ nhash = _asn1_hash_name (n);
+ n_start = NULL;
+ }
+
+ if (p->down == NULL)
+ return NULL;
+
+ p = p->down;
+ if (p == NULL)
+ return NULL;
+
+ /* The identifier "?LAST" indicates the last element
+ in the right chain. */
+ if (n[0] == '?' && n[1] == 'L') /* ?LAST */
+ {
+ while (p->right)
+ p = p->right;
+ }
+ else
+ { /* no "?LAST" */
+ while (p)
+ {
+ if (p->name_hash == nhash && !strcmp (p->name, n))
+ break;
+ else
+ p = p->right;
+ }
+ }
+ if (p == NULL)
+ return NULL;
+ } /* while */
+
+ return (asn1_node) p;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_set_value */
+/* Description: sets the field VALUE in a NODE_ASN element. The */
+/* previous value (if exist) will be lost */
+/* Parameters: */
+/* node: element pointer. */
+/* value: pointer to the value that you want to set. */
+/* len: character number of value. */
+/* Return: pointer to the NODE_ASN element. */
+/******************************************************************/
+asn1_node
+_asn1_set_value (asn1_node node, const void *value, unsigned int len)
+{
+ if (node == NULL)
+ return node;
+ if (node->value)
+ {
+ if (node->value != node->small_value)
+ free (node->value);
+ node->value = NULL;
+ node->value_len = 0;
+ }
+
+ if (!len)
+ return node;
+
+ if (len < sizeof (node->small_value))
+ {
+ node->value = node->small_value;
+ }
+ else
+ {
+ node->value = malloc (len);
+ if (node->value == NULL)
+ return NULL;
+ }
+ node->value_len = len;
+
+ memcpy (node->value, value, len);
+ return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_value_lv */
+/* Description: sets the field VALUE in a NODE_ASN element. The */
+/* previous value (if exist) will be lost. The value */
+/* given is stored as an length-value format (LV */
+/* Parameters: */
+/* node: element pointer. */
+/* value: pointer to the value that you want to set. */
+/* len: character number of value. */
+/* Return: pointer to the NODE_ASN element. */
+/******************************************************************/
+asn1_node
+_asn1_set_value_lv (asn1_node node, const void *value, unsigned int len)
+{
+ int len2;
+ void *temp;
+
+ if (node == NULL)
+ return node;
+
+ asn1_length_der (len, NULL, &len2);
+ temp = malloc (len + len2);
+ if (temp == NULL)
+ return NULL;
+
+ asn1_octet_der (value, len, temp, &len2);
+ return _asn1_set_value_m (node, temp, len2);
+}
+
+/* the same as _asn1_set_value except that it sets an already malloc'ed
+ * value.
+ */
+asn1_node
+_asn1_set_value_m (asn1_node node, void *value, unsigned int len)
+{
+ if (node == NULL)
+ return node;
+
+ if (node->value)
+ {
+ if (node->value != node->small_value)
+ free (node->value);
+ node->value = NULL;
+ node->value_len = 0;
+ }
+
+ if (!len)
+ return node;
+
+ node->value = value;
+ node->value_len = len;
+
+ return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_append_value */
+/* Description: appends to the field VALUE in a NODE_ASN element. */
+/* */
+/* Parameters: */
+/* node: element pointer. */
+/* value: pointer to the value that you want to be appended. */
+/* len: character number of value. */
+/* Return: pointer to the NODE_ASN element. */
+/******************************************************************/
+asn1_node
+_asn1_append_value (asn1_node node, const void *value, unsigned int len)
+{
+ if (node == NULL)
+ return node;
+
+ if (node->value == NULL)
+ return _asn1_set_value (node, value, len);
+
+ if (len == 0)
+ return node;
+
+ if (node->value == node->small_value)
+ {
+ /* value is in node */
+ int prev_len = node->value_len;
+ node->value_len += len;
+ node->value = malloc (node->value_len);
+ if (node->value == NULL)
+ {
+ node->value_len = 0;
+ return NULL;
+ }
+
+ if (prev_len > 0)
+ memcpy (node->value, node->small_value, prev_len);
+
+ memcpy (&node->value[prev_len], value, len);
+
+ return node;
+ }
+ else /* if (node->value != NULL && node->value != node->small_value) */
+ {
+ /* value is allocated */
+ int prev_len = node->value_len;
+ node->value_len += len;
+
+ node->value = _asn1_realloc (node->value, node->value_len);
+ if (node->value == NULL)
+ {
+ node->value_len = 0;
+ return NULL;
+ }
+
+ memcpy (&node->value[prev_len], value, len);
+
+ return node;
+ }
+}
+
+/******************************************************************/
+/* Function : _asn1_set_name */
+/* Description: sets the field NAME in a NODE_ASN element. The */
+/* previous value (if exist) will be lost */
+/* Parameters: */
+/* node: element pointer. */
+/* name: a null terminated string with the name that you want */
+/* to set. */
+/* Return: pointer to the NODE_ASN element. */
+/******************************************************************/
+asn1_node
+_asn1_set_name (asn1_node node, const char *name)
+{
+ if (node == NULL)
+ return node;
+
+ _asn1_str_cpy (node->name, sizeof (node->name), name ? name : "");
+ node->name_hash = _asn1_hash_name (node->name);
+
+ return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_cpy_name */
+/* Description: copies the field NAME in a NODE_ASN element. */
+/* Parameters: */
+/* dst: a dest element pointer. */
+/* src: a source element pointer. */
+/* Return: pointer to the NODE_ASN element. */
+/******************************************************************/
+asn1_node
+_asn1_cpy_name (asn1_node dst, asn1_node_const src)
+{
+ if (dst == NULL)
+ return dst;
+
+ if (src == NULL)
+ {
+ dst->name[0] = 0;
+ dst->name_hash = _asn1_hash_name (dst->name);
+ return dst;
+ }
+
+ _asn1_str_cpy (dst->name, sizeof (dst->name), src->name);
+ dst->name_hash = src->name_hash;
+
+ return dst;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_right */
+/* Description: sets the field RIGHT in a NODE_ASN element. */
+/* Parameters: */
+/* node: element pointer. */
+/* right: pointer to a NODE_ASN element that you want be pointed*/
+/* by NODE. */
+/* Return: pointer to *NODE. */
+/******************************************************************/
+asn1_node
+_asn1_set_right (asn1_node node, asn1_node right)
+{
+ if (node == NULL)
+ return node;
+ node->right = right;
+ if (right)
+ right->left = node;
+ return node;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_get_last_right */
+/* Description: return the last element along the right chain. */
+/* Parameters: */
+/* node: starting element pointer. */
+/* Return: pointer to the last element along the right chain. */
+/******************************************************************/
+asn1_node
+_asn1_get_last_right (asn1_node_const node)
+{
+ asn1_node_const p;
+
+ if (node == NULL)
+ return NULL;
+ p = node;
+ while (p->right)
+ p = p->right;
+ return (asn1_node) p;
+}
+
+/******************************************************************/
+/* Function : _asn1_remove_node */
+/* Description: gets free the memory allocated for an NODE_ASN */
+/* element (not the elements pointed by it). */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* flags: ASN1_DELETE_FLAG_* */
+/******************************************************************/
+void
+_asn1_remove_node (asn1_node node, unsigned int flags)
+{
+ if (node == NULL)
+ return;
+
+ if (node->value != NULL)
+ {
+ if (flags & ASN1_DELETE_FLAG_ZEROIZE)
+ {
+ safe_memset (node->value, 0, node->value_len);
+ }
+
+ if (node->value != node->small_value)
+ free (node->value);
+ }
+ free (node);
+}
+
+/******************************************************************/
+/* Function : _asn1_find_up */
+/* Description: return the father of the NODE_ASN element. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* Return: Null if not found. */
+/******************************************************************/
+asn1_node
+_asn1_find_up (asn1_node_const node)
+{
+ asn1_node_const p;
+
+ if (node == NULL)
+ return NULL;
+
+ p = node;
+
+ while ((p->left != NULL) && (p->left->right == p))
+ p = p->left;
+
+ return p->left;
+}
+
+static unsigned
+_asn1_is_up (asn1_node_const up_cand, asn1_node_const down)
+{
+ asn1_node_const d, u;
+
+ if (up_cand == NULL || down == NULL)
+ return 0;
+
+ d = down;
+
+ while ((u = _asn1_find_up (d)) != NULL && u != d)
+ {
+ if (u == up_cand)
+ return 1;
+ d = u;
+ }
+
+ return 0;
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_node_from_list */
+/* Description: deletes the list element given */
+/******************************************************************/
+void
+_asn1_delete_node_from_list (list_type * list, asn1_node node)
+{
+ list_type *p = list;
+
+ while (p)
+ {
+ if (p->node == node)
+ p->node = NULL;
+ p = p->next;
+ }
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_list */
+/* Description: deletes the list elements (not the elements */
+/* pointed by them). */
+/******************************************************************/
+void
+_asn1_delete_list (list_type * e_list)
+{
+ list_type *p;
+
+ while (e_list)
+ {
+ p = e_list;
+ e_list = e_list->next;
+ free (p);
+ }
+}
+
+/******************************************************************/
+/* Function : _asn1_delete_list_and nodes */
+/* Description: deletes the list elements and the elements */
+/* pointed by them. */
+/******************************************************************/
+void
+_asn1_delete_list_and_nodes (list_type * e_list)
+{
+ list_type *p;
+
+ while (e_list)
+ {
+ p = e_list;
+ e_list = e_list->next;
+ _asn1_remove_node (p->node, 0);
+ free (p);
+ }
+}
+
+
+char *
+_asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
+{
+ uint64_t d, r;
+ char temp[LTOSTR_MAX_SIZE];
+ int count, k, start;
+ uint64_t val;
+
+ if (v < 0)
+ {
+ str[0] = '-';
+ start = 1;
+ val = -((uint64_t) v);
+ }
+ else
+ {
+ val = v;
+ start = 0;
+ }
+
+ count = 0;
+ do
+ {
+ d = val / 10;
+ r = val - d * 10;
+ temp[start + count] = '0' + (char) r;
+ count++;
+ val = d;
+ }
+ while (val && ((start + count) < LTOSTR_MAX_SIZE - 1));
+
+ for (k = 0; k < count; k++)
+ str[k + start] = temp[start + count - k - 1];
+ str[count + start] = 0;
+ return str;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_change_integer_value */
+/* Description: converts into DER coding the value assign to an */
+/* INTEGER constant. */
+/* Parameters: */
+/* node: root of an ASN1element. */
+/* Return: */
+/* ASN1_ELEMENT_NOT_FOUND if NODE is NULL, */
+/* otherwise ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_change_integer_value (asn1_node node)
+{
+ asn1_node p;
+ unsigned char val[SIZEOF_UNSIGNED_LONG_INT];
+ unsigned char val2[SIZEOF_UNSIGNED_LONG_INT + 1];
+ int len;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ while (p)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_INTEGER)
+ && (p->type & CONST_ASSIGN))
+ {
+ if (p->value)
+ {
+ _asn1_convert_integer (p->value, val, sizeof (val), &len);
+ asn1_octet_der (val, len, val2, &len);
+ _asn1_set_value (p, val2, len);
+ }
+ }
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else
+ {
+ if (p == node)
+ p = NULL;
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == node)
+ {
+ p = NULL;
+ break;
+ }
+ if (p && p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ return ASN1_SUCCESS;
+}
+
+#define MAX_CONSTANTS 1024
+/******************************************************************/
+/* Function : _asn1_expand_object_id */
+/* Description: expand the IDs of an OBJECT IDENTIFIER constant. */
+/* Parameters: */
+/* list: root of an object list */
+/* node: root of an ASN1 element. */
+/* Return: */
+/* ASN1_ELEMENT_NOT_FOUND if NODE is NULL, */
+/* otherwise ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_expand_object_id (list_type ** list, asn1_node node)
+{
+ asn1_node p, p2, p3, p4, p5;
+ char name_root[ASN1_MAX_NAME_SIZE], name2[2 * ASN1_MAX_NAME_SIZE + 1];
+ int move, tlen, tries;
+ unsigned max_constants;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ _asn1_str_cpy (name_root, sizeof (name_root), node->name);
+
+ p = node;
+ move = DOWN;
+ tries = 0;
+
+ while (!((p == node) && (move == UP)))
+ {
+ if (move != UP)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID)
+ && (p->type & CONST_ASSIGN))
+ {
+ p2 = p->down;
+ if (p2 && (type_field (p2->type) == ASN1_ETYPE_CONSTANT))
+ {
+ if (p2->value && !c_isdigit (p2->value[0]))
+ {
+ _asn1_str_cpy (name2, sizeof (name2), name_root);
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ _asn1_str_cat (name2, sizeof (name2),
+ (char *) p2->value);
+ p3 = asn1_find_node (node, name2);
+ if (!p3 || _asn1_is_up (p2, p3) ||
+ (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID) ||
+ !(p3->type & CONST_ASSIGN))
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ _asn1_set_down (p, p2->right);
+ if (p2->down)
+ _asn1_delete_structure (*list, &p2->down, 0);
+ _asn1_delete_node_from_list (*list, p2);
+ _asn1_remove_node (p2, 0);
+ p2 = p;
+ p4 = p3->down;
+ max_constants = 0;
+ while (p4)
+ {
+ if (type_field (p4->type) == ASN1_ETYPE_CONSTANT)
+ {
+ max_constants++;
+ if (max_constants == MAX_CONSTANTS)
+ return ASN1_RECURSION;
+
+ p5 =
+ _asn1_add_single_node (ASN1_ETYPE_CONSTANT);
+ _asn1_set_name (p5, p4->name);
+ if (p4->value)
+ {
+ tlen = _asn1_strlen (p4->value);
+ if (tlen > 0)
+ _asn1_set_value (p5, p4->value, tlen + 1);
+ }
+ _asn1_add_static_node2 (list, p5);
+
+ if (p2 == p)
+ {
+ _asn1_set_right (p5, p->down);
+ _asn1_set_down (p, p5);
+ }
+ else
+ {
+ _asn1_set_right (p5, p2->right);
+ _asn1_set_right (p2, p5);
+ }
+ p2 = p5;
+ }
+ p4 = p4->right;
+ }
+ move = DOWN;
+
+ tries++;
+ if (tries >= EXPAND_OBJECT_ID_MAX_RECURSION)
+ return ASN1_RECURSION;
+
+ continue;
+ }
+ }
+ }
+ move = DOWN;
+ }
+ else
+ move = RIGHT;
+
+ tries = 0;
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+
+ if (p == node)
+ {
+ move = UP;
+ continue;
+ }
+
+ if (move == RIGHT)
+ {
+ if (p && p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ /*******************************/
+ /* expand DEFAULT */
+ /*******************************/
+ p = node;
+ move = DOWN;
+
+ while (!((p == node) && (move == UP)))
+ {
+ if (move != UP)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p->type & CONST_DEFAULT))
+ {
+ p2 = p->down;
+ if (p2 && (type_field (p2->type) == ASN1_ETYPE_DEFAULT))
+ {
+ _asn1_str_cpy (name2, sizeof (name2), name_root);
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ if (p2->value)
+ _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+ p3 = asn1_find_node (node, name2);
+ if (!p3 || (type_field (p3->type) != ASN1_ETYPE_OBJECT_ID)
+ || !(p3->type & CONST_ASSIGN))
+ return ASN1_ELEMENT_NOT_FOUND;
+ p4 = p3->down;
+ name2[0] = 0;
+ while (p4)
+ {
+ if (type_field (p4->type) == ASN1_ETYPE_CONSTANT)
+ {
+ if (p4->value == NULL)
+ return ASN1_VALUE_NOT_FOUND;
+
+ if (name2[0])
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ _asn1_str_cat (name2, sizeof (name2),
+ (char *) p4->value);
+ }
+ p4 = p4->right;
+ }
+ tlen = strlen (name2);
+ if (tlen > 0)
+ _asn1_set_value (p2, name2, tlen + 1);
+ }
+ }
+ move = DOWN;
+ }
+ else
+ move = RIGHT;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+
+ if (p == node)
+ {
+ move = UP;
+ continue;
+ }
+
+ if (move == RIGHT)
+ {
+ if (p && p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_type_set_config */
+/* Description: sets the CONST_SET and CONST_NOT_USED properties */
+/* in the fields of the SET elements. */
+/* Parameters: */
+/* node: root of an ASN1 element. */
+/* Return: */
+/* ASN1_ELEMENT_NOT_FOUND if NODE is NULL, */
+/* otherwise ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_type_set_config (asn1_node node)
+{
+ asn1_node p, p2;
+ int move;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ move = DOWN;
+
+ while (!((p == node) && (move == UP)))
+ {
+ if (move != UP)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_SET)
+ {
+ p2 = p->down;
+ while (p2)
+ {
+ if (type_field (p2->type) != ASN1_ETYPE_TAG)
+ p2->type |= CONST_SET | CONST_NOT_USED;
+ p2 = p2->right;
+ }
+ }
+ move = DOWN;
+ }
+ else
+ move = RIGHT;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+
+ if (p == node)
+ {
+ move = UP;
+ continue;
+ }
+
+ if (move == RIGHT)
+ {
+ if (p && p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_check_identifier */
+/* Description: checks the definitions of all the identifiers */
+/* and the first element of an OBJECT_ID (e.g. {pkix 0 4}). */
+/* The _asn1_identifierMissing global variable is filled if */
+/* necessary. */
+/* Parameters: */
+/* node: root of an ASN1 element. */
+/* Return: */
+/* ASN1_ELEMENT_NOT_FOUND if NODE is NULL, */
+/* ASN1_IDENTIFIER_NOT_FOUND if an identifier is not defined, */
+/* otherwise ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_check_identifier (asn1_node_const node)
+{
+ asn1_node_const p, p2;
+ char name2[ASN1_MAX_NAME_SIZE * 2 + 2];
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ while (p)
+ {
+ if (p->value && type_field (p->type) == ASN1_ETYPE_IDENTIFIER)
+ {
+ _asn1_str_cpy (name2, sizeof (name2), node->name);
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ _asn1_str_cat (name2, sizeof (name2), (char *) p->value);
+ p2 = asn1_find_node (node, name2);
+ if (p2 == NULL)
+ {
+ if (p->value)
+ _asn1_str_cpy (_asn1_identifierMissing,
+ sizeof (_asn1_identifierMissing),
+ (char *) p->value);
+ else
+ _asn1_strcpy (_asn1_identifierMissing, "(null)");
+ return ASN1_IDENTIFIER_NOT_FOUND;
+ }
+ }
+ else if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p->type & CONST_DEFAULT))
+ {
+ p2 = p->down;
+ if (p2 && (type_field (p2->type) == ASN1_ETYPE_DEFAULT))
+ {
+ _asn1_str_cpy (name2, sizeof (name2), node->name);
+ if (p2->value)
+ {
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+ _asn1_str_cpy (_asn1_identifierMissing,
+ sizeof (_asn1_identifierMissing),
+ (char *) p2->value);
+ }
+ else
+ _asn1_strcpy (_asn1_identifierMissing, "(null)");
+
+ p2 = asn1_find_node (node, name2);
+ if (!p2 || (type_field (p2->type) != ASN1_ETYPE_OBJECT_ID) ||
+ !(p2->type & CONST_ASSIGN))
+ return ASN1_IDENTIFIER_NOT_FOUND;
+ else
+ _asn1_identifierMissing[0] = 0;
+ }
+ }
+ else if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p->type & CONST_ASSIGN))
+ {
+ p2 = p->down;
+ if (p2 && (type_field (p2->type) == ASN1_ETYPE_CONSTANT))
+ {
+ if (p2->value && !c_isdigit (p2->value[0]))
+ {
+ _asn1_str_cpy (name2, sizeof (name2), node->name);
+ _asn1_str_cat (name2, sizeof (name2), ".");
+ _asn1_str_cat (name2, sizeof (name2), (char *) p2->value);
+ _asn1_str_cpy (_asn1_identifierMissing,
+ sizeof (_asn1_identifierMissing),
+ (char *) p2->value);
+
+ p2 = asn1_find_node (node, name2);
+ if (!p2 || (type_field (p2->type) != ASN1_ETYPE_OBJECT_ID)
+ || !(p2->type & CONST_ASSIGN))
+ return ASN1_IDENTIFIER_NOT_FOUND;
+ else
+ _asn1_identifierMissing[0] = 0;
+ }
+ }
+ }
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (p)
+ {
+ p = _asn1_find_up (p);
+ if (p == node)
+ {
+ p = NULL;
+ break;
+ }
+ if (p && p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_set_default_tag */
+/* Description: sets the default IMPLICIT or EXPLICIT property in */
+/* the tagged elements that don't have this declaration. */
+/* Parameters: */
+/* node: pointer to a DEFINITIONS element. */
+/* Return: */
+/* ASN1_ELEMENT_NOT_FOUND if NODE is NULL or not a pointer to */
+/* a DEFINITIONS element, */
+/* otherwise ASN1_SUCCESS */
+/******************************************************************/
+int
+_asn1_set_default_tag (asn1_node node)
+{
+ asn1_node p;
+
+ if ((node == NULL) || (type_field (node->type) != ASN1_ETYPE_DEFINITIONS))
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ while (p)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_TAG) &&
+ !(p->type & CONST_EXPLICIT) && !(p->type & CONST_IMPLICIT))
+ {
+ if (node->type & CONST_EXPLICIT)
+ p->type |= CONST_EXPLICIT;
+ else
+ p->type |= CONST_IMPLICIT;
+ }
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == node)
+ {
+ p = NULL;
+ break;
+ }
+ if (p && p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+
+ return ASN1_SUCCESS;
+}
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.h b/grub-core/lib/libtasn1/lib/parser_aux.h
new file mode 100644
index 000000000..3eac1fa30
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/parser_aux.h
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2000-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+#ifndef _PARSER_AUX_H
+# define _PARSER_AUX_H
+
+/***********************************************/
+/* Type: list_type */
+/* Description: type used in the list during */
+/* the structure creation. */
+/***********************************************/
+typedef struct list_struct
+{
+ asn1_node node;
+ struct list_struct *next;
+} list_type;
+
+/***************************************/
+/* Functions used by ASN.1 parser */
+/***************************************/
+asn1_node _asn1_add_static_node (list_type ** e_list, unsigned int type);
+
+void _asn1_delete_list (list_type * e_list);
+
+void _asn1_delete_list_and_nodes (list_type * e_list);
+
+void _asn1_delete_node_from_list (list_type * list, asn1_node node);
+
+asn1_node
+_asn1_set_value (asn1_node node, const void *value, unsigned int len);
+
+asn1_node _asn1_set_value_m (asn1_node node, void *value, unsigned int len);
+
+asn1_node
+_asn1_set_value_lv (asn1_node node, const void *value, unsigned int len);
+
+asn1_node
+_asn1_append_value (asn1_node node, const void *value, unsigned int len);
+
+asn1_node _asn1_set_name (asn1_node node, const char *name);
+
+asn1_node _asn1_cpy_name (asn1_node dst, asn1_node_const src);
+
+asn1_node _asn1_set_right (asn1_node node, asn1_node right);
+
+asn1_node _asn1_get_last_right (asn1_node_const node);
+
+void _asn1_remove_node (asn1_node node, unsigned int flags);
+
+/* Max 64-bit integer length is 20 chars + 1 for sign + 1 for null termination */
+# define LTOSTR_MAX_SIZE 22
+char *_asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE]);
+
+asn1_node _asn1_find_up (asn1_node_const node);
+
+int _asn1_change_integer_value (asn1_node node);
+
+# define EXPAND_OBJECT_ID_MAX_RECURSION 16
+int _asn1_expand_object_id (list_type ** list, asn1_node node);
+
+int _asn1_type_set_config (asn1_node node);
+
+int _asn1_check_identifier (asn1_node_const node);
+
+int _asn1_set_default_tag (asn1_node node);
+
+/******************************************************************/
+/* Function : _asn1_get_right */
+/* Description: returns the element pointed by the RIGHT field of */
+/* a NODE_ASN element. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* Return: field RIGHT of NODE. */
+/******************************************************************/
+inline static asn1_node
+_asn1_get_right (asn1_node_const node)
+{
+ if (node == NULL)
+ return NULL;
+ return node->right;
+}
+
+/******************************************************************/
+/* Function : _asn1_set_down */
+/* Description: sets the field DOWN in a NODE_ASN element. */
+/* Parameters: */
+/* node: element pointer. */
+/* down: pointer to a NODE_ASN element that you want be pointed */
+/* by NODE. */
+/* Return: pointer to *NODE. */
+/******************************************************************/
+inline static asn1_node
+_asn1_set_down (asn1_node node, asn1_node down)
+{
+ if (node == NULL)
+ return node;
+ node->down = down;
+ if (down)
+ down->left = node;
+ return node;
+}
+
+/******************************************************************/
+/* Function : _asn1_get_down */
+/* Description: returns the element pointed by the DOWN field of */
+/* a NODE_ASN element. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* Return: field DOWN of NODE. */
+/******************************************************************/
+inline static asn1_node
+_asn1_get_down (asn1_node_const node)
+{
+ if (node == NULL)
+ return NULL;
+ return node->down;
+}
+
+/******************************************************************/
+/* Function : _asn1_get_name */
+/* Description: returns the name of a NODE_ASN element. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* Return: a null terminated string. */
+/******************************************************************/
+inline static char *
+_asn1_get_name (asn1_node_const node)
+{
+ if (node == NULL)
+ return NULL;
+ return (char *) node->name;
+}
+
+/******************************************************************/
+/* Function : _asn1_mod_type */
+/* Description: change the field TYPE of an NODE_ASN element. */
+/* The new value is the old one | (bitwise or) the */
+/* paramener VALUE. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* value: the integer value that must be or-ed with the current */
+/* value of field TYPE. */
+/* Return: NODE pointer. */
+/******************************************************************/
+inline static asn1_node
+_asn1_mod_type (asn1_node node, unsigned int value)
+{
+ if (node == NULL)
+ return node;
+ node->type |= value;
+ return node;
+}
+
+#endif
diff --git a/grub-core/lib/libtasn1/lib/structure.c b/grub-core/lib/libtasn1/lib/structure.c
new file mode 100644
index 000000000..512dd601f
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/structure.c
@@ -0,0 +1,1225 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+
+/*****************************************************/
+/* File: structure.c */
+/* Description: Functions to create and delete an */
+/* ASN1 tree. */
+/*****************************************************/
+
+
+#include <int.h>
+#include <structure.h>
+#include "parser_aux.h"
+#include <gstr.h>
+
+
+extern char _asn1_identifierMissing[];
+
+
+/******************************************************/
+/* Function : _asn1_add_single_node */
+/* Description: creates a new NODE_ASN element. */
+/* Parameters: */
+/* type: type of the new element (see ASN1_ETYPE_ */
+/* and CONST_ constants). */
+/* Return: pointer to the new element. */
+/******************************************************/
+asn1_node
+_asn1_add_single_node (unsigned int type)
+{
+ asn1_node punt;
+
+ punt = calloc (1, sizeof (struct asn1_node_st));
+ if (punt == NULL)
+ return NULL;
+
+ punt->type = type;
+
+ return punt;
+}
+
+
+/******************************************************************/
+/* Function : _asn1_find_left */
+/* Description: returns the NODE_ASN element with RIGHT field that*/
+/* points the element NODE. */
+/* Parameters: */
+/* node: NODE_ASN element pointer. */
+/* Return: NULL if not found. */
+/******************************************************************/
+asn1_node
+_asn1_find_left (asn1_node_const node)
+{
+ if ((node == NULL) || (node->left == NULL) || (node->left->down == node))
+ return NULL;
+
+ return node->left;
+}
+
+
+int
+_asn1_create_static_structure (asn1_node_const pointer,
+ char *output_file_name, char *vector_name)
+{
+ FILE *file;
+ asn1_node_const p;
+ unsigned long t;
+
+ file = fopen (output_file_name, "w");
+
+ if (file == NULL)
+ return ASN1_FILE_NOT_FOUND;
+
+ fprintf (file, "#if HAVE_CONFIG_H\n");
+ fprintf (file, "# include \"config.h\"\n");
+ fprintf (file, "#endif\n\n");
+
+ fprintf (file, "#include <libtasn1.h>\n\n");
+
+ fprintf (file, "const asn1_static_node %s[] = {\n", vector_name);
+
+ p = pointer;
+
+ while (p)
+ {
+ fprintf (file, " { ");
+
+ if (p->name[0] != 0)
+ fprintf (file, "\"%s\", ", p->name);
+ else
+ fprintf (file, "NULL, ");
+
+ t = p->type;
+ if (p->down)
+ t |= CONST_DOWN;
+ if (p->right)
+ t |= CONST_RIGHT;
+
+ fprintf (file, "%lu, ", t);
+
+ if (p->value)
+ fprintf (file, "\"%s\"},\n", p->value);
+ else
+ fprintf (file, "NULL },\n");
+
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else if (p->right)
+ {
+ p = p->right;
+ }
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == pointer)
+ {
+ p = NULL;
+ break;
+ }
+ if (p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+
+ fprintf (file, " { NULL, 0, NULL }\n};\n");
+
+ fclose (file);
+
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_array2tree:
+ * @array: specify the array that contains ASN.1 declarations
+ * @definitions: return the pointer to the structure created by
+ * *ARRAY ASN.1 declarations
+ * @errorDescription: return the error description.
+ *
+ * Creates the structures needed to manage the ASN.1 definitions.
+ * @array is a vector created by asn1_parser2array().
+ *
+ * Returns: %ASN1_SUCCESS if structure was created correctly,
+ * %ASN1_ELEMENT_NOT_EMPTY if *@definitions not NULL,
+ * %ASN1_IDENTIFIER_NOT_FOUND if in the file there is an identifier
+ * that is not defined (see @errorDescription for more information),
+ * %ASN1_ARRAY_ERROR if the array pointed by @array is wrong.
+ **/
+int
+asn1_array2tree (const asn1_static_node * array, asn1_node * definitions,
+ char *errorDescription)
+{
+ asn1_node p, p_last = NULL;
+ unsigned long k;
+ int move;
+ int result;
+ unsigned int type;
+ list_type *e_list = NULL;
+
+ if (errorDescription)
+ errorDescription[0] = 0;
+
+ if (*definitions != NULL)
+ return ASN1_ELEMENT_NOT_EMPTY;
+
+ move = UP;
+
+ for (k = 0; array[k].value || array[k].type || array[k].name; k++)
+ {
+ type = convert_old_type (array[k].type);
+
+ p = _asn1_add_static_node (&e_list, type & (~CONST_DOWN));
+ if (array[k].name)
+ _asn1_set_name (p, array[k].name);
+ if (array[k].value)
+ _asn1_set_value (p, array[k].value, strlen (array[k].value) + 1);
+
+ if (*definitions == NULL)
+ *definitions = p;
+
+ if (move == DOWN)
+ {
+ if (p_last && p_last->down)
+ _asn1_delete_structure (e_list, &p_last->down, 0);
+ _asn1_set_down (p_last, p);
+ }
+ else if (move == RIGHT)
+ {
+ if (p_last && p_last->right)
+ _asn1_delete_structure (e_list, &p_last->right, 0);
+ _asn1_set_right (p_last, p);
+ }
+
+ p_last = p;
+
+ if (type & CONST_DOWN)
+ move = DOWN;
+ else if (type & CONST_RIGHT)
+ move = RIGHT;
+ else
+ {
+ while (p_last != *definitions)
+ {
+ p_last = _asn1_find_up (p_last);
+
+ if (p_last == NULL)
+ break;
+
+ if (p_last->type & CONST_RIGHT)
+ {
+ p_last->type &= ~CONST_RIGHT;
+ move = RIGHT;
+ break;
+ }
+ } /* while */
+ }
+ } /* while */
+
+ if (p_last == *definitions)
+ {
+ result = _asn1_check_identifier (*definitions);
+ if (result == ASN1_SUCCESS)
+ {
+ _asn1_change_integer_value (*definitions);
+ result = _asn1_expand_object_id (&e_list, *definitions);
+ }
+ }
+ else
+ {
+ result = ASN1_ARRAY_ERROR;
+ }
+
+ if (errorDescription != NULL)
+ {
+ if (result == ASN1_IDENTIFIER_NOT_FOUND)
+ {
+ Estrcpy (errorDescription, ":: identifier '");
+ Estrcat (errorDescription, _asn1_identifierMissing);
+ Estrcat (errorDescription, "' not found");
+ }
+ else
+ errorDescription[0] = 0;
+ }
+
+ if (result != ASN1_SUCCESS)
+ {
+ _asn1_delete_list_and_nodes (e_list);
+ *definitions = NULL;
+ }
+ else
+ _asn1_delete_list (e_list);
+
+ return result;
+}
+
+/**
+ * asn1_delete_structure:
+ * @structure: pointer to the structure that you want to delete.
+ *
+ * Deletes the structure *@structure. At the end, *@structure is set
+ * to NULL.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ * *@structure was NULL.
+ **/
+int
+asn1_delete_structure (asn1_node * structure)
+{
+ return _asn1_delete_structure (NULL, structure, 0);
+}
+
+/**
+ * asn1_delete_structure2:
+ * @structure: pointer to the structure that you want to delete.
+ * @flags: additional flags (see %ASN1_DELETE_FLAG_ZEROIZE)
+ *
+ * Deletes the structure *@structure. At the end, *@structure is set
+ * to NULL.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ * *@structure was NULL.
+ **/
+int
+asn1_delete_structure2 (asn1_node * structure, unsigned int flags)
+{
+ return _asn1_delete_structure (NULL, structure, flags);
+}
+
+int
+_asn1_delete_structure (list_type * e_list, asn1_node * structure,
+ unsigned int flags)
+{
+ asn1_node p, p2, p3;
+
+ if (*structure == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = *structure;
+ while (p)
+ {
+ if (p->down)
+ {
+ p = p->down;
+ }
+ else
+ { /* no down */
+ p2 = p->right;
+ if (p != *structure)
+ {
+ p3 = _asn1_find_up (p);
+ _asn1_set_down (p3, p2);
+ if (e_list)
+ _asn1_delete_node_from_list (e_list, p);
+ _asn1_remove_node (p, flags);
+ p = p3;
+ }
+ else
+ { /* p==root */
+ p3 = _asn1_find_left (p);
+ if (!p3)
+ {
+ p3 = _asn1_find_up (p);
+ if (p3)
+ _asn1_set_down (p3, p2);
+ else
+ {
+ if (p->right)
+ p->right->left = NULL;
+ }
+ }
+ else
+ _asn1_set_right (p3, p2);
+ if (e_list)
+ _asn1_delete_node_from_list (e_list, p);
+ _asn1_remove_node (p, flags);
+ p = NULL;
+ }
+ }
+ }
+
+ *structure = NULL;
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_delete_element:
+ * @structure: pointer to the structure that contains the element you
+ * want to delete.
+ * @element_name: element's name you want to delete.
+ *
+ * Deletes the element named *@element_name inside *@structure.
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ * the @element_name was not found.
+ **/
+int
+asn1_delete_element (asn1_node structure, const char *element_name)
+{
+ asn1_node p2, p3, source_node;
+
+ source_node = asn1_find_node (structure, element_name);
+
+ if (source_node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p2 = source_node->right;
+ p3 = _asn1_find_left (source_node);
+ if (!p3)
+ {
+ p3 = _asn1_find_up (source_node);
+ if (p3)
+ _asn1_set_down (p3, p2);
+ else if (source_node->right)
+ source_node->right->left = NULL;
+ }
+ else
+ _asn1_set_right (p3, p2);
+
+ return asn1_delete_structure (&source_node);
+}
+
+#ifndef __clang_analyzer__
+asn1_node
+_asn1_copy_structure3 (asn1_node_const source_node)
+{
+ asn1_node_const p_s;
+ asn1_node dest_node, p_d, p_d_prev;
+ int move;
+
+ if (source_node == NULL)
+ return NULL;
+
+ dest_node = _asn1_add_single_node (source_node->type);
+ if (dest_node == NULL)
+ return dest_node;
+
+ p_s = source_node;
+ p_d = dest_node;
+
+ move = DOWN;
+
+ do
+ {
+ if (move != UP)
+ {
+ if (p_s->name[0] != 0)
+ _asn1_cpy_name (p_d, p_s);
+ if (p_s->value)
+ _asn1_set_value (p_d, p_s->value, p_s->value_len);
+ if (p_s->down)
+ {
+ p_s = p_s->down;
+ p_d_prev = p_d;
+ p_d = _asn1_add_single_node (p_s->type);
+ _asn1_set_down (p_d_prev, p_d);
+ continue;
+ }
+ p_d->start = p_s->start;
+ p_d->end = p_s->end;
+ }
+
+ if (p_s == source_node)
+ break;
+
+ if (p_s->right)
+ {
+ move = RIGHT;
+ p_s = p_s->right;
+ p_d_prev = p_d;
+ p_d = _asn1_add_single_node (p_s->type);
+ _asn1_set_right (p_d_prev, p_d);
+ }
+ else
+ {
+ move = UP;
+ p_s = _asn1_find_up (p_s);
+ p_d = _asn1_find_up (p_d);
+ }
+ }
+ while (p_s != source_node);
+ return dest_node;
+}
+#else
+
+/* Non-production code */
+asn1_node
+_asn1_copy_structure3 (asn1_node_const source_node)
+{
+ return NULL;
+}
+#endif /* __clang_analyzer__ */
+
+
+static asn1_node
+_asn1_copy_structure2 (asn1_node_const root, const char *source_name)
+{
+ asn1_node source_node;
+
+ source_node = asn1_find_node (root, source_name);
+
+ return _asn1_copy_structure3 (source_node);
+
+}
+
+
+static int
+_asn1_type_choice_config (asn1_node node)
+{
+ asn1_node p, p2, p3, p4;
+ int move, tlen;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node;
+ move = DOWN;
+
+ while (!((p == node) && (move == UP)))
+ {
+ if (move != UP)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_CHOICE)
+ && (p->type & CONST_TAG))
+ {
+ p2 = p->down;
+ while (p2)
+ {
+ if (type_field (p2->type) != ASN1_ETYPE_TAG)
+ {
+ p2->type |= CONST_TAG;
+ p3 = _asn1_find_left (p2);
+ while (p3)
+ {
+ if (type_field (p3->type) == ASN1_ETYPE_TAG)
+ {
+ p4 = _asn1_add_single_node (p3->type);
+ tlen = _asn1_strlen (p3->value);
+ if (tlen > 0)
+ _asn1_set_value (p4, p3->value, tlen + 1);
+ _asn1_set_right (p4, p2->down);
+ _asn1_set_down (p2, p4);
+ }
+ p3 = _asn1_find_left (p3);
+ }
+ }
+ p2 = p2->right;
+ }
+ p->type &= ~(CONST_TAG);
+ p2 = p->down;
+ while (p2)
+ {
+ p3 = p2->right;
+ if (type_field (p2->type) == ASN1_ETYPE_TAG)
+ asn1_delete_structure (&p2);
+ p2 = p3;
+ }
+ }
+ move = DOWN;
+ }
+ else
+ move = RIGHT;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+
+ if (p == node)
+ {
+ move = UP;
+ continue;
+ }
+
+ if (move == RIGHT)
+ {
+ if (p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+static int
+_asn1_expand_identifier (asn1_node * node, asn1_node_const root)
+{
+ asn1_node p, p2, p3;
+ char name2[ASN1_MAX_NAME_SIZE + 2];
+ int move;
+
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = *node;
+ move = DOWN;
+
+ while (!((p == *node) && (move == UP)))
+ {
+ if (move != UP)
+ {
+ if (type_field (p->type) == ASN1_ETYPE_IDENTIFIER)
+ {
+ snprintf (name2, sizeof (name2), "%s.%s", root->name, p->value);
+ p2 = _asn1_copy_structure2 (root, name2);
+ if (p2 == NULL)
+ {
+ return ASN1_IDENTIFIER_NOT_FOUND;
+ }
+ _asn1_cpy_name (p2, p);
+ p2->right = p->right;
+ p2->left = p->left;
+ if (p->right)
+ p->right->left = p2;
+ p3 = p->down;
+ if (p3)
+ {
+ while (p3->right)
+ p3 = p3->right;
+ _asn1_set_right (p3, p2->down);
+ _asn1_set_down (p2, p->down);
+ }
+
+ p3 = _asn1_find_left (p);
+ if (p3)
+ _asn1_set_right (p3, p2);
+ else
+ {
+ p3 = _asn1_find_up (p);
+ if (p3)
+ _asn1_set_down (p3, p2);
+ else
+ {
+ p2->left = NULL;
+ }
+ }
+
+ if (p->type & CONST_SIZE)
+ p2->type |= CONST_SIZE;
+ if (p->type & CONST_TAG)
+ p2->type |= CONST_TAG;
+ if (p->type & CONST_OPTION)
+ p2->type |= CONST_OPTION;
+ if (p->type & CONST_DEFAULT)
+ p2->type |= CONST_DEFAULT;
+ if (p->type & CONST_SET)
+ p2->type |= CONST_SET;
+ if (p->type & CONST_NOT_USED)
+ p2->type |= CONST_NOT_USED;
+
+ if (p == *node)
+ *node = p2;
+ _asn1_remove_node (p, 0);
+ p = p2;
+ move = DOWN;
+ continue;
+ }
+ move = DOWN;
+ }
+ else
+ move = RIGHT;
+
+ if (move == DOWN)
+ {
+ if (p->down)
+ p = p->down;
+ else
+ move = RIGHT;
+ }
+
+ if (p == *node)
+ {
+ move = UP;
+ continue;
+ }
+
+ if (move == RIGHT)
+ {
+ if (p->right)
+ p = p->right;
+ else
+ move = UP;
+ }
+ if (move == UP)
+ p = _asn1_find_up (p);
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_create_element:
+ * @definitions: pointer to the structure returned by "parser_asn1" function
+ * @source_name: the name of the type of the new structure (must be
+ * inside p_structure).
+ * @element: pointer to the structure created.
+ *
+ * Creates a structure of type @source_name. Example using
+ * "pkix.asn":
+ *
+ * rc = asn1_create_element(cert_def, "PKIX1.Certificate", certptr);
+ *
+ * Returns: %ASN1_SUCCESS if creation OK, %ASN1_ELEMENT_NOT_FOUND if
+ * @source_name is not known.
+ **/
+int
+asn1_create_element (asn1_node_const definitions, const char *source_name,
+ asn1_node * element)
+{
+ asn1_node dest_node;
+ int res;
+
+ dest_node = _asn1_copy_structure2 (definitions, source_name);
+
+ if (dest_node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ _asn1_set_name (dest_node, "");
+
+ res = _asn1_expand_identifier (&dest_node, definitions);
+ _asn1_type_choice_config (dest_node);
+
+ *element = dest_node;
+
+ return res;
+}
+
+
+/**
+ * asn1_print_structure:
+ * @out: pointer to the output file (e.g. stdout).
+ * @structure: pointer to the structure that you want to visit.
+ * @name: an element of the structure
+ * @mode: specify how much of the structure to print, can be
+ * %ASN1_PRINT_NAME, %ASN1_PRINT_NAME_TYPE,
+ * %ASN1_PRINT_NAME_TYPE_VALUE, or %ASN1_PRINT_ALL.
+ *
+ * Prints on the @out file descriptor the structure's tree starting
+ * from the @name element inside the structure @structure.
+ **/
+void
+asn1_print_structure (FILE * out, asn1_node_const structure, const char *name,
+ int mode)
+{
+ asn1_node_const p, root;
+ int k, indent = 0, len, len2, len3;
+
+ if (out == NULL)
+ return;
+
+ root = asn1_find_node (structure, name);
+
+ if (root == NULL)
+ return;
+
+ p = root;
+ while (p)
+ {
+ if (mode == ASN1_PRINT_ALL)
+ {
+ for (k = 0; k < indent; k++)
+ fprintf (out, " ");
+ fprintf (out, "name:");
+ if (p->name[0] != 0)
+ fprintf (out, "%s ", p->name);
+ else
+ fprintf (out, "NULL ");
+ }
+ else
+ {
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_CONSTANT:
+ case ASN1_ETYPE_TAG:
+ case ASN1_ETYPE_SIZE:
+ break;
+ default:
+ for (k = 0; k < indent; k++)
+ fprintf (out, " ");
+ fprintf (out, "name:");
+ if (p->name[0] != 0)
+ fprintf (out, "%s ", p->name);
+ else
+ fprintf (out, "NULL ");
+ }
+ }
+
+ if (mode != ASN1_PRINT_NAME)
+ {
+ unsigned type = type_field (p->type);
+ switch (type)
+ {
+ case ASN1_ETYPE_CONSTANT:
+ if (mode == ASN1_PRINT_ALL)
+ fprintf (out, "type:CONST");
+ break;
+ case ASN1_ETYPE_TAG:
+ if (mode == ASN1_PRINT_ALL)
+ fprintf (out, "type:TAG");
+ break;
+ case ASN1_ETYPE_SIZE:
+ if (mode == ASN1_PRINT_ALL)
+ fprintf (out, "type:SIZE");
+ break;
+ case ASN1_ETYPE_DEFAULT:
+ fprintf (out, "type:DEFAULT");
+ break;
+ case ASN1_ETYPE_IDENTIFIER:
+ fprintf (out, "type:IDENTIFIER");
+ break;
+ case ASN1_ETYPE_ANY:
+ fprintf (out, "type:ANY");
+ break;
+ case ASN1_ETYPE_CHOICE:
+ fprintf (out, "type:CHOICE");
+ break;
+ case ASN1_ETYPE_DEFINITIONS:
+ fprintf (out, "type:DEFINITIONS");
+ break;
+ CASE_HANDLED_ETYPES:
+ fprintf (out, "%s", _asn1_tags[type].desc);
+ break;
+ default:
+ break;
+ }
+ }
+
+ if ((mode == ASN1_PRINT_NAME_TYPE_VALUE) || (mode == ASN1_PRINT_ALL))
+ {
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_CONSTANT:
+ if (mode == ASN1_PRINT_ALL)
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ break;
+ case ASN1_ETYPE_TAG:
+ if (mode == ASN1_PRINT_ALL)
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ break;
+ case ASN1_ETYPE_SIZE:
+ if (mode == ASN1_PRINT_ALL)
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ break;
+ case ASN1_ETYPE_DEFAULT:
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ else if (p->type & CONST_TRUE)
+ fprintf (out, " value:TRUE");
+ else if (p->type & CONST_FALSE)
+ fprintf (out, " value:FALSE");
+ break;
+ case ASN1_ETYPE_IDENTIFIER:
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ break;
+ case ASN1_ETYPE_INTEGER:
+ if (p->value)
+ {
+ len2 = -1;
+ len = asn1_get_length_der (p->value, p->value_len, &len2);
+ fprintf (out, " value:0x");
+ if (len > 0)
+ for (k = 0; k < len; k++)
+ fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+ }
+ break;
+ case ASN1_ETYPE_ENUMERATED:
+ if (p->value)
+ {
+ len2 = -1;
+ len = asn1_get_length_der (p->value, p->value_len, &len2);
+ fprintf (out, " value:0x");
+ if (len > 0)
+ for (k = 0; k < len; k++)
+ fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+ }
+ break;
+ case ASN1_ETYPE_BOOLEAN:
+ if (p->value)
+ {
+ if (p->value[0] == 'T')
+ fprintf (out, " value:TRUE");
+ else if (p->value[0] == 'F')
+ fprintf (out, " value:FALSE");
+ }
+ break;
+ case ASN1_ETYPE_BIT_STRING:
+ if (p->value)
+ {
+ len2 = -1;
+ len = asn1_get_length_der (p->value, p->value_len, &len2);
+ if (len > 0)
+ {
+ fprintf (out, " value(%i):",
+ (len - 1) * 8 - (p->value[len2]));
+ for (k = 1; k < len; k++)
+ fprintf (out, "%02x",
+ (unsigned) (p->value)[k + len2]);
+ }
+ }
+ break;
+ case ASN1_ETYPE_GENERALIZED_TIME:
+ case ASN1_ETYPE_UTC_TIME:
+ if (p->value)
+ {
+ fprintf (out, " value:");
+ for (k = 0; k < p->value_len; k++)
+ fprintf (out, "%c", (p->value)[k]);
+ }
+ break;
+ case ASN1_ETYPE_GENERALSTRING:
+ case ASN1_ETYPE_NUMERIC_STRING:
+ case ASN1_ETYPE_IA5_STRING:
+ case ASN1_ETYPE_TELETEX_STRING:
+ case ASN1_ETYPE_PRINTABLE_STRING:
+ case ASN1_ETYPE_UNIVERSAL_STRING:
+ case ASN1_ETYPE_UTF8_STRING:
+ case ASN1_ETYPE_VISIBLE_STRING:
+ if (p->value)
+ {
+ len2 = -1;
+ len = asn1_get_length_der (p->value, p->value_len, &len2);
+ fprintf (out, " value:");
+ if (len > 0)
+ for (k = 0; k < len; k++)
+ fprintf (out, "%c", (p->value)[k + len2]);
+ }
+ break;
+ case ASN1_ETYPE_BMP_STRING:
+ case ASN1_ETYPE_OCTET_STRING:
+ if (p->value)
+ {
+ len2 = -1;
+ len = asn1_get_length_der (p->value, p->value_len, &len2);
+ fprintf (out, " value:");
+ if (len > 0)
+ for (k = 0; k < len; k++)
+ fprintf (out, "%02x", (unsigned) (p->value)[k + len2]);
+ }
+ break;
+ case ASN1_ETYPE_OBJECT_ID:
+ if (p->value)
+ fprintf (out, " value:%s", p->value);
+ break;
+ case ASN1_ETYPE_ANY:
+ if (p->value)
+ {
+ len3 = -1;
+ len2 = asn1_get_length_der (p->value, p->value_len, &len3);
+ fprintf (out, " value:");
+ if (len2 > 0)
+ for (k = 0; k < len2; k++)
+ fprintf (out, "%02x", (unsigned) (p->value)[k + len3]);
+ }
+ break;
+ case ASN1_ETYPE_SET:
+ case ASN1_ETYPE_SET_OF:
+ case ASN1_ETYPE_CHOICE:
+ case ASN1_ETYPE_DEFINITIONS:
+ case ASN1_ETYPE_SEQUENCE_OF:
+ case ASN1_ETYPE_SEQUENCE:
+ case ASN1_ETYPE_NULL:
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (mode == ASN1_PRINT_ALL)
+ {
+ if (p->type & 0x1FFFFF00)
+ {
+ fprintf (out, " attr:");
+ if (p->type & CONST_UNIVERSAL)
+ fprintf (out, "UNIVERSAL,");
+ if (p->type & CONST_PRIVATE)
+ fprintf (out, "PRIVATE,");
+ if (p->type & CONST_APPLICATION)
+ fprintf (out, "APPLICATION,");
+ if (p->type & CONST_EXPLICIT)
+ fprintf (out, "EXPLICIT,");
+ if (p->type & CONST_IMPLICIT)
+ fprintf (out, "IMPLICIT,");
+ if (p->type & CONST_TAG)
+ fprintf (out, "TAG,");
+ if (p->type & CONST_DEFAULT)
+ fprintf (out, "DEFAULT,");
+ if (p->type & CONST_TRUE)
+ fprintf (out, "TRUE,");
+ if (p->type & CONST_FALSE)
+ fprintf (out, "FALSE,");
+ if (p->type & CONST_LIST)
+ fprintf (out, "LIST,");
+ if (p->type & CONST_MIN_MAX)
+ fprintf (out, "MIN_MAX,");
+ if (p->type & CONST_OPTION)
+ fprintf (out, "OPTION,");
+ if (p->type & CONST_1_PARAM)
+ fprintf (out, "1_PARAM,");
+ if (p->type & CONST_SIZE)
+ fprintf (out, "SIZE,");
+ if (p->type & CONST_DEFINED_BY)
+ fprintf (out, "DEF_BY,");
+ if (p->type & CONST_GENERALIZED)
+ fprintf (out, "GENERALIZED,");
+ if (p->type & CONST_UTC)
+ fprintf (out, "UTC,");
+ if (p->type & CONST_SET)
+ fprintf (out, "SET,");
+ if (p->type & CONST_NOT_USED)
+ fprintf (out, "NOT_USED,");
+ if (p->type & CONST_ASSIGN)
+ fprintf (out, "ASSIGNMENT,");
+ }
+ }
+
+ if (mode == ASN1_PRINT_ALL)
+ {
+ fprintf (out, "\n");
+ }
+ else
+ {
+ switch (type_field (p->type))
+ {
+ case ASN1_ETYPE_CONSTANT:
+ case ASN1_ETYPE_TAG:
+ case ASN1_ETYPE_SIZE:
+ break;
+ default:
+ fprintf (out, "\n");
+ }
+ }
+
+ if (p->down)
+ {
+ p = p->down;
+ indent += 2;
+ }
+ else if (p == root)
+ {
+ p = NULL;
+ break;
+ }
+ else if (p->right)
+ p = p->right;
+ else
+ {
+ while (1)
+ {
+ p = _asn1_find_up (p);
+ if (p == root)
+ {
+ p = NULL;
+ break;
+ }
+ indent -= 2;
+ if (p->right)
+ {
+ p = p->right;
+ break;
+ }
+ }
+ }
+ }
+}
+
+
+
+/**
+ * asn1_number_of_elements:
+ * @element: pointer to the root of an ASN1 structure.
+ * @name: the name of a sub-structure of ROOT.
+ * @num: pointer to an integer where the result will be stored
+ *
+ * Counts the number of elements of a sub-structure called NAME with
+ * names equal to "?1","?2", ...
+ *
+ * Returns: %ASN1_SUCCESS if successful, %ASN1_ELEMENT_NOT_FOUND if
+ * @name is not known, %ASN1_GENERIC_ERROR if pointer @num is %NULL.
+ **/
+int
+asn1_number_of_elements (asn1_node_const element, const char *name, int *num)
+{
+ asn1_node_const node, p;
+
+ if (num == NULL)
+ return ASN1_GENERIC_ERROR;
+
+ *num = 0;
+
+ node = asn1_find_node (element, name);
+ if (node == NULL)
+ return ASN1_ELEMENT_NOT_FOUND;
+
+ p = node->down;
+
+ while (p)
+ {
+ if (p->name[0] == '?')
+ (*num)++;
+ p = p->right;
+ }
+
+ return ASN1_SUCCESS;
+}
+
+
+/**
+ * asn1_find_structure_from_oid:
+ * @definitions: ASN1 definitions
+ * @oidValue: value of the OID to search (e.g. "1.2.3.4").
+ *
+ * Search the structure that is defined just after an OID definition.
+ *
+ * Returns: %NULL when @oidValue not found, otherwise the pointer to a
+ * constant string that contains the element name defined just after
+ * the OID.
+ **/
+const char *
+asn1_find_structure_from_oid (asn1_node_const definitions,
+ const char *oidValue)
+{
+ char name[2 * ASN1_MAX_NAME_SIZE + 2];
+ char value[ASN1_MAX_NAME_SIZE];
+ asn1_node p;
+ int len;
+ int result;
+ const char *definitionsName;
+
+ if ((definitions == NULL) || (oidValue == NULL))
+ return NULL; /* ASN1_ELEMENT_NOT_FOUND; */
+
+ definitionsName = definitions->name;
+
+ /* search the OBJECT_ID into definitions */
+ p = definitions->down;
+ while (p)
+ {
+ if ((type_field (p->type) == ASN1_ETYPE_OBJECT_ID) &&
+ (p->type & CONST_ASSIGN))
+ {
+ snprintf (name, sizeof (name), "%s.%s", definitionsName, p->name);
+
+ len = ASN1_MAX_NAME_SIZE;
+ result = asn1_read_value (definitions, name, value, &len);
+
+ if ((result == ASN1_SUCCESS) && (!strcmp (oidValue, value)))
+ {
+ p = p->right;
+ if (p == NULL) /* reach the end of ASN1 definitions */
+ return NULL; /* ASN1_ELEMENT_NOT_FOUND; */
+
+ return p->name;
+ }
+ }
+ p = p->right;
+ }
+
+ return NULL; /* ASN1_ELEMENT_NOT_FOUND; */
+}
+
+/**
+ * asn1_copy_node:
+ * @dst: Destination asn1 node.
+ * @dst_name: Field name in destination node.
+ * @src: Source asn1 node.
+ * @src_name: Field name in source node.
+ *
+ * Create a deep copy of a asn1_node variable. That
+ * function requires @dst to be expanded using asn1_create_element().
+ *
+ * Returns: Return %ASN1_SUCCESS on success.
+ **/
+int
+asn1_copy_node (asn1_node dst, const char *dst_name,
+ asn1_node_const src, const char *src_name)
+{
+ int result;
+ asn1_node dst_node;
+ void *data = NULL;
+ int size = 0;
+
+ result = asn1_der_coding (src, src_name, NULL, &size, NULL);
+ if (result != ASN1_MEM_ERROR)
+ return result;
+
+ data = malloc (size);
+ if (data == NULL)
+ return ASN1_MEM_ERROR;
+
+ result = asn1_der_coding (src, src_name, data, &size, NULL);
+ if (result != ASN1_SUCCESS)
+ {
+ free (data);
+ return result;
+ }
+
+ dst_node = asn1_find_node (dst, dst_name);
+ if (dst_node == NULL)
+ {
+ free (data);
+ return ASN1_ELEMENT_NOT_FOUND;
+ }
+
+ result = asn1_der_decoding (&dst_node, data, size, NULL);
+
+ free (data);
+
+ return result;
+}
+
+/**
+ * asn1_dup_node:
+ * @src: Source asn1 node.
+ * @src_name: Field name in source node.
+ *
+ * Create a deep copy of a asn1_node variable. This function
+ * will return an exact copy of the provided structure.
+ *
+ * Returns: Return %NULL on failure.
+ **/
+asn1_node
+asn1_dup_node (asn1_node_const src, const char *src_name)
+{
+ return _asn1_copy_structure2 (src, src_name);
+}
diff --git a/grub-core/lib/libtasn1/lib/structure.h b/grub-core/lib/libtasn1/lib/structure.h
new file mode 100644
index 000000000..b973ce963
--- /dev/null
+++ b/grub-core/lib/libtasn1/lib/structure.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * The LIBTASN1 library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ */
+
+/*************************************************/
+/* File: structure.h */
+/* Description: list of exported object by */
+/* "structure.c" */
+/*************************************************/
+
+#ifndef _STRUCTURE_H
+# define _STRUCTURE_H
+
+# include "parser_aux.h" /* list_type */
+
+int _asn1_create_static_structure (asn1_node_const pointer,
+ char *output_file_name, char *vector_name);
+
+asn1_node _asn1_copy_structure3 (asn1_node_const source_node);
+
+asn1_node _asn1_add_single_node (unsigned int type);
+
+asn1_node _asn1_find_left (asn1_node_const node);
+
+int
+_asn1_delete_structure (list_type * e_list, asn1_node * structure,
+ unsigned int flags);
+
+#endif
diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
new file mode 100644
index 000000000..51cc7879f
--- /dev/null
+++ b/include/grub/libtasn1.h
@@ -0,0 +1,643 @@
+/*
+ * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * LIBTASN1 is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * LIBTASN1 is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with LIBTASN1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+/**
+ * SECTION:libtasn1
+ * @short_description: GNU ASN.1 library
+ *
+ * The Libtasn1 library provides Abstract Syntax Notation One (ASN.1, as
+ * specified by the X.680 ITU-T recommendation) parsing and structures
+ * management, and Distinguished Encoding Rules (DER, as per X.690)
+ * encoding and decoding functions.
+ */
+
+
+#ifndef LIBTASN1_H
+# define LIBTASN1_H
+
+# ifndef ASN1_API
+# if defined ASN1_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY
+# define ASN1_API __attribute__((__visibility__("default")))
+# elif defined ASN1_BUILDING && defined _MSC_VER && ! defined ASN1_STATIC
+# define ASN1_API __declspec(dllexport)
+# elif defined _MSC_VER && ! defined ASN1_STATIC
+# define ASN1_API __declspec(dllimport)
+# else
+# define ASN1_API
+# endif
+# endif
+
+# ifdef __GNUC__
+# define __LIBTASN1_CONST__ __attribute__((const))
+# define __LIBTASN1_PURE__ __attribute__((pure))
+# else
+# define __LIBTASN1_CONST__
+# define __LIBTASN1_PURE__
+# endif
+
+# include <sys/types.h>
+# include <time.h>
+# include <stdio.h> /* for FILE* */
+
+# ifdef __cplusplus
+extern "C"
+{
+# endif
+
+/**
+ * ASN1_VERSION:
+ *
+ * Version of the library as a string.
+ */
+# define ASN1_VERSION "4.19.0"
+
+/**
+ * ASN1_VERSION_MAJOR:
+ *
+ * Major version number of the library.
+ */
+# define ASN1_VERSION_MAJOR 4
+
+/**
+ * ASN1_VERSION_MINOR:
+ *
+ * Minor version number of the library.
+ */
+# define ASN1_VERSION_MINOR 19
+
+/**
+ * ASN1_VERSION_PATCH:
+ *
+ * Patch version number of the library.
+ */
+# define ASN1_VERSION_PATCH 0
+
+/**
+ * ASN1_VERSION_NUMBER:
+ *
+ * Version number of the library as a number.
+ */
+# define ASN1_VERSION_NUMBER 0x041300
+
+
+# if defined __GNUC__ && !defined ASN1_INTERNAL_BUILD
+# define _ASN1_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+# if _ASN1_GCC_VERSION >= 30100
+# define _ASN1_GCC_ATTR_DEPRECATED __attribute__ ((__deprecated__))
+# endif
+# endif
+
+# ifndef _ASN1_GCC_ATTR_DEPRECATED
+# define _ASN1_GCC_ATTR_DEPRECATED
+# endif
+
+/*****************************************/
+/* Errors returned by libtasn1 functions */
+/*****************************************/
+# define ASN1_SUCCESS 0
+# define ASN1_FILE_NOT_FOUND 1
+# define ASN1_ELEMENT_NOT_FOUND 2
+# define ASN1_IDENTIFIER_NOT_FOUND 3
+# define ASN1_DER_ERROR 4
+# define ASN1_VALUE_NOT_FOUND 5
+# define ASN1_GENERIC_ERROR 6
+# define ASN1_VALUE_NOT_VALID 7
+# define ASN1_TAG_ERROR 8
+# define ASN1_TAG_IMPLICIT 9
+# define ASN1_ERROR_TYPE_ANY 10
+# define ASN1_SYNTAX_ERROR 11
+# define ASN1_MEM_ERROR 12
+# define ASN1_MEM_ALLOC_ERROR 13
+# define ASN1_DER_OVERFLOW 14
+# define ASN1_NAME_TOO_LONG 15
+# define ASN1_ARRAY_ERROR 16
+# define ASN1_ELEMENT_NOT_EMPTY 17
+# define ASN1_TIME_ENCODING_ERROR 18
+# define ASN1_RECURSION 19
+
+/*************************************/
+/* Constants used in asn1_visit_tree */
+/*************************************/
+# define ASN1_PRINT_NAME 1
+# define ASN1_PRINT_NAME_TYPE 2
+# define ASN1_PRINT_NAME_TYPE_VALUE 3
+# define ASN1_PRINT_ALL 4
+
+/*****************************************/
+/* Constants returned by asn1_read_tag */
+/*****************************************/
+# define ASN1_CLASS_UNIVERSAL 0x00 /* old: 1 */
+# define ASN1_CLASS_APPLICATION 0x40 /* old: 2 */
+# define ASN1_CLASS_CONTEXT_SPECIFIC 0x80 /* old: 3 */
+# define ASN1_CLASS_PRIVATE 0xC0 /* old: 4 */
+# define ASN1_CLASS_STRUCTURED 0x20
+
+/*****************************************/
+/* Constants returned by asn1_read_tag */
+/*****************************************/
+# define ASN1_TAG_BOOLEAN 0x01
+# define ASN1_TAG_INTEGER 0x02
+# define ASN1_TAG_SEQUENCE 0x10
+# define ASN1_TAG_SET 0x11
+# define ASN1_TAG_OCTET_STRING 0x04
+# define ASN1_TAG_BIT_STRING 0x03
+# define ASN1_TAG_UTCTime 0x17
+# define ASN1_TAG_GENERALIZEDTime 0x18
+# define ASN1_TAG_OBJECT_ID 0x06
+# define ASN1_TAG_ENUMERATED 0x0A
+# define ASN1_TAG_NULL 0x05
+# define ASN1_TAG_GENERALSTRING 0x1B
+# define ASN1_TAG_NUMERIC_STRING 0x12
+# define ASN1_TAG_IA5_STRING 0x16
+# define ASN1_TAG_TELETEX_STRING 0x14
+# define ASN1_TAG_PRINTABLE_STRING 0x13
+# define ASN1_TAG_UNIVERSAL_STRING 0x1C
+# define ASN1_TAG_BMP_STRING 0x1E
+# define ASN1_TAG_UTF8_STRING 0x0C
+# define ASN1_TAG_VISIBLE_STRING 0x1A
+
+/**
+ * asn1_node:
+ *
+ * Structure definition used for the node of the tree
+ * that represents an ASN.1 DEFINITION.
+ */
+ typedef struct asn1_node_st asn1_node_st;
+
+ typedef asn1_node_st *asn1_node;
+ typedef const asn1_node_st *asn1_node_const;
+
+/**
+ * ASN1_MAX_NAME_SIZE:
+ *
+ * Maximum number of characters of a name
+ * inside a file with ASN1 definitions.
+ */
+# define ASN1_MAX_NAME_SIZE 64
+
+
+/**
+ * asn1_static_node:
+ * @name: Node name
+ * @type: Node typ
+ * @value: Node value
+ *
+ * For the on-disk format of ASN.1 trees, created by asn1_parser2array().
+ */
+ typedef struct asn1_static_node_st
+ {
+ const char *name; /* Node name */
+ unsigned int type; /* Node type */
+ const void *value; /* Node value */
+ } asn1_static_node;
+
+/* List of constants for field type of asn1_static_node */
+# define ASN1_ETYPE_INVALID 0
+# define ASN1_ETYPE_CONSTANT 1
+# define ASN1_ETYPE_IDENTIFIER 2
+# define ASN1_ETYPE_INTEGER 3
+# define ASN1_ETYPE_BOOLEAN 4
+# define ASN1_ETYPE_SEQUENCE 5
+# define ASN1_ETYPE_BIT_STRING 6
+# define ASN1_ETYPE_OCTET_STRING 7
+# define ASN1_ETYPE_TAG 8
+# define ASN1_ETYPE_DEFAULT 9
+# define ASN1_ETYPE_SIZE 10
+# define ASN1_ETYPE_SEQUENCE_OF 11
+# define ASN1_ETYPE_OBJECT_ID 12
+# define ASN1_ETYPE_ANY 13
+# define ASN1_ETYPE_SET 14
+# define ASN1_ETYPE_SET_OF 15
+# define ASN1_ETYPE_DEFINITIONS 16
+# define ASN1_ETYPE_CHOICE 18
+# define ASN1_ETYPE_IMPORTS 19
+# define ASN1_ETYPE_NULL 20
+# define ASN1_ETYPE_ENUMERATED 21
+# define ASN1_ETYPE_GENERALSTRING 27
+# define ASN1_ETYPE_NUMERIC_STRING 28
+# define ASN1_ETYPE_IA5_STRING 29
+# define ASN1_ETYPE_TELETEX_STRING 30
+# define ASN1_ETYPE_PRINTABLE_STRING 31
+# define ASN1_ETYPE_UNIVERSAL_STRING 32
+# define ASN1_ETYPE_BMP_STRING 33
+# define ASN1_ETYPE_UTF8_STRING 34
+# define ASN1_ETYPE_VISIBLE_STRING 35
+# define ASN1_ETYPE_UTC_TIME 36
+# define ASN1_ETYPE_GENERALIZED_TIME 37
+
+/**
+ * ASN1_DELETE_FLAG_ZEROIZE:
+ *
+ * Used by: asn1_delete_structure2()
+ *
+ * Zeroize values prior to deinitialization.
+ */
+# define ASN1_DELETE_FLAG_ZEROIZE 1
+
+/**
+ * ASN1_DECODE_FLAG_ALLOW_PADDING:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag would allow arbitrary data past the DER data.
+ */
+# define ASN1_DECODE_FLAG_ALLOW_PADDING 1
+/**
+ * ASN1_DECODE_FLAG_STRICT_DER:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag would ensure that no BER decoding takes place.
+ */
+# define ASN1_DECODE_FLAG_STRICT_DER (1<<1)
+/**
+ * ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME:
+ *
+ * Used by: asn1_der_decoding2()
+ *
+ * This flag will tolerate Time encoding errors when in strict DER.
+ */
+# define ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME (1<<2)
+
+ /* *INDENT-OFF* */
+
+/**
+ * asn1_data_node_st:
+ * @name: Node name
+ * @value: Node value
+ * @value_len: Node value size
+ * @type: Node value type (ASN1_ETYPE_*)
+ *
+ * Data node inside a #asn1_node structure.
+ */
+ struct asn1_data_node_st
+ {
+ const char *name; /* Node name */
+ const void *value; /* Node value */
+ unsigned int value_len; /* Node value size */
+ unsigned int type; /* Node value type (ASN1_ETYPE_*) */
+};
+
+ /* *INDENT-ON* */
+
+ typedef struct asn1_data_node_st asn1_data_node_st;
+
+/***********************************/
+/* Fixed constants */
+/***********************************/
+
+/**
+ * ASN1_MAX_ERROR_DESCRIPTION_SIZE:
+ *
+ * Maximum number of characters
+ * of a description message
+ * (null character included).
+ */
+# define ASN1_MAX_ERROR_DESCRIPTION_SIZE 128
+
+/***********************************/
+/* Functions definitions */
+/***********************************/
+
+ extern ASN1_API int
+ asn1_parser2tree (const char *file,
+ asn1_node * definitions, char *error_desc);
+
+ extern ASN1_API int
+ asn1_parser2array (const char *inputFileName,
+ const char *outputFileName,
+ const char *vectorName, char *error_desc);
+
+ extern ASN1_API int
+ asn1_array2tree (const asn1_static_node * array,
+ asn1_node * definitions, char *errorDescription);
+
+ extern ASN1_API void
+ asn1_print_structure (FILE * out, asn1_node_const structure,
+ const char *name, int mode);
+
+ extern ASN1_API int
+ asn1_create_element (asn1_node_const definitions,
+ const char *source_name, asn1_node * element);
+
+ extern ASN1_API int asn1_delete_structure (asn1_node * structure);
+
+ extern ASN1_API int asn1_delete_structure2 (asn1_node * structure,
+ unsigned int flags);
+
+ extern ASN1_API int
+ asn1_delete_element (asn1_node structure, const char *element_name);
+
+ extern ASN1_API int
+ asn1_write_value (asn1_node node_root, const char *name,
+ const void *ivalue, int len);
+
+ extern ASN1_API int
+ asn1_read_value (asn1_node_const root, const char *name,
+ void *ivalue, int *len);
+
+ extern ASN1_API int
+ asn1_read_value_type (asn1_node_const root, const char *name,
+ void *ivalue, int *len, unsigned int *etype);
+
+ extern ASN1_API int
+ asn1_read_node_value (asn1_node_const node, asn1_data_node_st * data);
+
+ extern ASN1_API int
+ asn1_number_of_elements (asn1_node_const element, const char *name,
+ int *num);
+
+ extern ASN1_API int
+ asn1_der_coding (asn1_node_const element, const char *name,
+ void *ider, int *len, char *ErrorDescription);
+
+ extern ASN1_API int
+ asn1_der_decoding2 (asn1_node * element, const void *ider,
+ int *max_ider_len, unsigned int flags,
+ char *errorDescription);
+
+ extern ASN1_API int
+ asn1_der_decoding (asn1_node * element, const void *ider,
+ int ider_len, char *errorDescription);
+
+/* Do not use. Use asn1_der_decoding() instead. */
+ extern ASN1_API int
+ asn1_der_decoding_element (asn1_node * structure,
+ const char *elementName,
+ const void *ider, int len,
+ char *errorDescription)
+ _ASN1_GCC_ATTR_DEPRECATED;
+
+ extern ASN1_API int
+ asn1_der_decoding_startEnd (asn1_node element,
+ const void *ider, int ider_len,
+ const char *name_element,
+ int *start, int *end);
+
+ extern ASN1_API int
+ asn1_expand_any_defined_by (asn1_node_const definitions,
+ asn1_node * element);
+
+ extern ASN1_API int
+ asn1_expand_octet_string (asn1_node_const definitions,
+ asn1_node * element,
+ const char *octetName, const char *objectName);
+
+ extern ASN1_API int
+ asn1_read_tag (asn1_node_const root, const char *name,
+ int *tagValue, int *classValue);
+
+ extern ASN1_API const char *asn1_find_structure_from_oid (asn1_node_const
+ definitions,
+ const char
+ *oidValue);
+
+ __LIBTASN1_PURE__
+ extern ASN1_API const char *asn1_check_version (const char *req_version);
+
+ __LIBTASN1_PURE__ extern ASN1_API const char *asn1_strerror (int error);
+
+ extern ASN1_API void asn1_perror (int error);
+
+# define ASN1_MAX_TAG_SIZE 4
+# define ASN1_MAX_LENGTH_SIZE 9
+# define ASN1_MAX_TL_SIZE (ASN1_MAX_TAG_SIZE+ASN1_MAX_LENGTH_SIZE)
+ extern ASN1_API long
+ asn1_get_length_der (const unsigned char *der, int der_len, int *len);
+
+ extern ASN1_API long
+ asn1_get_length_ber (const unsigned char *ber, int ber_len, int *len);
+
+ extern ASN1_API void
+ asn1_length_der (unsigned long int len, unsigned char *der, int *der_len);
+
+/* Other utility functions. */
+
+ extern ASN1_API
+ int asn1_decode_simple_der (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len,
+ const unsigned char **str,
+ unsigned int *str_len);
+
+ extern ASN1_API
+ int asn1_decode_simple_ber (unsigned int etype, const unsigned char *der,
+ unsigned int _der_len,
+ unsigned char **str,
+ unsigned int *str_len, unsigned int *ber_len);
+
+ extern ASN1_API int
+ asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
+ unsigned int str_len, unsigned char *tl,
+ unsigned int *tl_len);
+
+ extern ASN1_API asn1_node
+ asn1_find_node (asn1_node_const pointer, const char *name);
+
+ extern ASN1_API int
+ asn1_copy_node (asn1_node dst, const char *dst_name,
+ asn1_node_const src, const char *src_name);
+ extern ASN1_API asn1_node
+ asn1_dup_node (asn1_node_const src, const char *src_name);
+
+/* Internal and low-level DER utility functions. */
+
+ extern ASN1_API int
+ asn1_get_tag_der (const unsigned char *der, int der_len,
+ unsigned char *cls, int *len, unsigned long *tag);
+
+ extern ASN1_API void
+ asn1_octet_der (const unsigned char *str, int str_len,
+ unsigned char *der, int *der_len);
+
+ extern ASN1_API int
+ asn1_get_octet_der (const unsigned char *der, int der_len,
+ int *ret_len, unsigned char *str,
+ int str_size, int *str_len);
+
+ extern ASN1_API void asn1_bit_der (const unsigned char *str, int bit_len,
+ unsigned char *der, int *der_len);
+
+ extern ASN1_API int
+ asn1_get_bit_der (const unsigned char *der, int der_len,
+ int *ret_len, unsigned char *str,
+ int str_size, int *bit_len);
+
+ extern ASN1_API int
+ asn1_get_object_id_der (const unsigned char *der,
+ int der_len, int *ret_len,
+ char *str, int str_size);
+
+ extern ASN1_API int
+ asn1_object_id_der (const char *str, unsigned char *der, int *der_len,
+ unsigned flags);
+
+/* Compatibility types */
+
+/**
+ * asn1_retCode:
+ *
+ * Type formerly returned by libtasn1 functions.
+ *
+ * Deprecated: 3.0: Use int instead.
+ */
+ typedef int asn1_retCode _ASN1_GCC_ATTR_DEPRECATED;
+
+/**
+ * node_asn_struct:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define node_asn_struct _Pragma ("GCC warning \"'node_asn_struct' macro is deprecated, use 'asn1_node' instead.\"") asn1_node_st
+# else
+# define node_asn_struct asn1_node_st
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * node_asn:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define node_asn _Pragma ("GCC warning \"'node_asn' macro is deprecated, use 'asn1_node' instead.\"") asn1_node_st
+# else
+# define node_asn asn1_node_st
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_TYPE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define ASN1_TYPE _Pragma ("GCC warning \"'ASN1_TYPE' macro is deprecated, use 'asn1_node' instead.\"") asn1_node
+# else
+# define ASN1_TYPE asn1_node
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_TYPE_EMPTY:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use NULL instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define ASN1_TYPE_EMPTY _Pragma ("GCC warning \"'ASN1_TYPE_EMPTY' macro is deprecated, use 'NULL' instead.\"") NULL
+# else
+# define ASN1_TYPE_EMPTY NULL
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * static_struct_asn:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define static_struct_asn _Pragma ("GCC warning \"'static_struct_asn' macro is deprecated, use 'asn1_static_node_st' instead.\"") asn1_static_node_st
+# else
+# define static_struct_asn asn1_static_node_st
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_ARRAY_TYPE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define ASN1_ARRAY_TYPE _Pragma ("GCC warning \"'ASN1_ARRAY_TYPE' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_static_node
+# else
+# define ASN1_ARRAY_TYPE asn1_static_node
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * asn1_static_node_t:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_static_node instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define asn1_static_node_t _Pragma ("GCC warning \"'asn1_static_node_t' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_static_node
+# else
+# define asn1_static_node_t asn1_static_node
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * node_data_struct:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_data_node_st instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define node_data_struct _Pragma ("GCC warning \"'node_data_struct' macro is deprecated, use 'asn1_data_node_st' instead.\"") asn1_data_node_st
+# else
+# define node_data_struct asn1_data_node_st
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+/**
+ * ASN1_DATA_NODE:
+ *
+ * Compat #define.
+ *
+ * Deprecated: 3.0: Use #asn1_data_node_st instead.
+ */
+# ifndef ASN1_DISABLE_DEPRECATED
+# if _ASN1_GCC_VERSION >= 30100
+# define ASN1_DATA_NODE _Pragma ("GCC warning \"'asn1_static_node_t' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_data_node_st
+# else
+# define ASN1_DATA_NODE asn1_data_node_st
+# endif
+# endif /* !ASN1_DISABLE_DEPRECATED */
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif /* LIBTASN1_H */
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 03/20] libtasn1: disable code not needed in grub
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 01/20] posix_wrap: tweaks in preparation for libtasn1 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 02/20] libtasn1: import libtasn1-4.19.0 Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 04/20] libtasn1: changes for grub compatibility Gary Lin via Grub-devel
` (16 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
We don't expect to be able to write ASN.1, only read it,
so we can disable some code.
Do that with #if 0/#endif, rather than deletion. This means
that the difference between upstream and grub is smaller,
which should make updating libtasn1 easier in the future.
With these exclusions we also avoid the need for minmax.h,
which is convenient because it means we don't have to
import it from gnulib.
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/lib/libtasn1/lib/coding.c | 12 ++++++++++--
grub-core/lib/libtasn1/lib/decoding.c | 2 ++
grub-core/lib/libtasn1/lib/element.c | 6 +++---
grub-core/lib/libtasn1/lib/errors.c | 3 +++
grub-core/lib/libtasn1/lib/structure.c | 10 ++++++----
include/grub/libtasn1.h | 15 +++++++++++++++
6 files changed, 39 insertions(+), 9 deletions(-)
diff --git a/grub-core/lib/libtasn1/lib/coding.c b/grub-core/lib/libtasn1/lib/coding.c
index ea5bc370e..5d03bca9d 100644
--- a/grub-core/lib/libtasn1/lib/coding.c
+++ b/grub-core/lib/libtasn1/lib/coding.c
@@ -30,11 +30,11 @@
#include "parser_aux.h"
#include <gstr.h>
#include "element.h"
-#include "minmax.h"
#include <structure.h>
#define MAX_TAG_LEN 16
+#if 0 /* GRUB SKIPPED IMPORTING */
/******************************************************/
/* Function : _asn1_error_description_value_not_found */
/* Description: creates the ErrorDescription string */
@@ -58,6 +58,7 @@ _asn1_error_description_value_not_found (asn1_node node,
Estrcat (ErrorDescription, "' not found");
}
+#endif
/**
* asn1_length_der:
@@ -244,6 +245,7 @@ asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
return ASN1_SUCCESS;
}
+#if 0 /* GRUB SKIPPED IMPORTING */
/******************************************************/
/* Function : _asn1_time_der */
/* Description: creates the DER coding for a TIME */
@@ -278,7 +280,7 @@ _asn1_time_der (unsigned char *str, int str_len, unsigned char *der,
return ASN1_SUCCESS;
}
-
+#endif
/*
void
@@ -519,6 +521,7 @@ asn1_bit_der (const unsigned char *str, int bit_len,
}
+#if 0 /* GRUB SKIPPED IMPORTING */
/******************************************************/
/* Function : _asn1_complete_explicit_tag */
/* Description: add the length coding to the EXPLICIT */
@@ -595,6 +598,7 @@ _asn1_complete_explicit_tag (asn1_node node, unsigned char *der,
return ASN1_SUCCESS;
}
+#endif
const tag_and_class_st _asn1_tags[] = {
[ASN1_ETYPE_GENERALSTRING] =
@@ -647,6 +651,8 @@ const tag_and_class_st _asn1_tags[] = {
unsigned int _asn1_tags_size = sizeof (_asn1_tags) / sizeof (_asn1_tags[0]);
+
+#if 0 /* GRUB SKIPPED IMPORTING */
/******************************************************/
/* Function : _asn1_insert_tag_der */
/* Description: creates the DER coding of tags of one */
@@ -1423,3 +1429,5 @@ error:
asn1_delete_structure (&node);
return err;
}
+
+#endif
diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
index b9245c486..bf9cb13ac 100644
--- a/grub-core/lib/libtasn1/lib/decoding.c
+++ b/grub-core/lib/libtasn1/lib/decoding.c
@@ -1620,6 +1620,7 @@ asn1_der_decoding (asn1_node * element, const void *ider, int ider_len,
return asn1_der_decoding2 (element, ider, &ider_len, 0, errorDescription);
}
+#if 0 /* GRUB SKIPPED IMPORTING */
/**
* asn1_der_decoding_element:
* @structure: pointer to an ASN1 structure
@@ -1650,6 +1651,7 @@ asn1_der_decoding_element (asn1_node * structure, const char *elementName,
{
return asn1_der_decoding (structure, ider, len, errorDescription);
}
+#endif
/**
* asn1_der_decoding_startEnd:
diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
index d4c558e10..bc4c3c8d7 100644
--- a/grub-core/lib/libtasn1/lib/element.c
+++ b/grub-core/lib/libtasn1/lib/element.c
@@ -118,7 +118,7 @@ _asn1_convert_integer (const unsigned char *value, unsigned char *value_out,
value_out[k2 - k] = val[k2];
}
-#if 0
+#if 0 /* GRUB SKIPPED IMPORTING */
printf ("_asn1_convert_integer: valueIn=%s, lenOut=%d", value, *len);
for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
printf (", vOut[%d]=%d", k, value_out[k]);
@@ -191,7 +191,7 @@ _asn1_append_sequence_set (asn1_node node, struct node_tail_cache_st *pcache)
return ASN1_SUCCESS;
}
-
+#if 0
/**
* asn1_write_value:
* @node_root: pointer to a structure
@@ -646,7 +646,7 @@ asn1_write_value (asn1_node node_root, const char *name,
return ASN1_SUCCESS;
}
-
+#endif
#define PUT_VALUE( ptr, ptr_size, data, data_size) \
*len = data_size; \
diff --git a/grub-core/lib/libtasn1/lib/errors.c b/grub-core/lib/libtasn1/lib/errors.c
index aef5dfe6f..2b2322152 100644
--- a/grub-core/lib/libtasn1/lib/errors.c
+++ b/grub-core/lib/libtasn1/lib/errors.c
@@ -57,6 +57,8 @@ static const libtasn1_error_entry error_algorithms[] = {
{0, 0}
};
+
+#if 0 /* GRUB SKIPPED IMPORTING */
/**
* asn1_perror:
* @error: is an error returned by a libtasn1 function.
@@ -73,6 +75,7 @@ asn1_perror (int error)
const char *str = asn1_strerror (error);
fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");
}
+#endif
/**
* asn1_strerror:
diff --git a/grub-core/lib/libtasn1/lib/structure.c b/grub-core/lib/libtasn1/lib/structure.c
index 512dd601f..f5a947d57 100644
--- a/grub-core/lib/libtasn1/lib/structure.c
+++ b/grub-core/lib/libtasn1/lib/structure.c
@@ -76,7 +76,7 @@ _asn1_find_left (asn1_node_const node)
return node->left;
}
-
+#if 0 /* GRUB SKIPPED IMPORTING */
int
_asn1_create_static_structure (asn1_node_const pointer,
char *output_file_name, char *vector_name)
@@ -155,7 +155,7 @@ _asn1_create_static_structure (asn1_node_const pointer,
return ASN1_SUCCESS;
}
-
+#endif
/**
* asn1_array2tree:
@@ -721,7 +721,7 @@ asn1_create_element (asn1_node_const definitions, const char *source_name,
return res;
}
-
+#if 0 /* GRUB SKIPPED IMPORTING */
/**
* asn1_print_structure:
* @out: pointer to the output file (e.g. stdout).
@@ -1062,7 +1062,7 @@ asn1_print_structure (FILE * out, asn1_node_const structure, const char *name,
}
}
}
-
+#endif
/**
@@ -1158,6 +1158,7 @@ asn1_find_structure_from_oid (asn1_node_const definitions,
return NULL; /* ASN1_ELEMENT_NOT_FOUND; */
}
+#if 0 /* GRUB SKIPPED IMPORTING */
/**
* asn1_copy_node:
* @dst: Destination asn1 node.
@@ -1207,6 +1208,7 @@ asn1_copy_node (asn1_node dst, const char *dst_name,
return result;
}
+#endif
/**
* asn1_dup_node:
diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
index 51cc7879f..058ab27b0 100644
--- a/include/grub/libtasn1.h
+++ b/include/grub/libtasn1.h
@@ -318,6 +318,8 @@ extern "C"
/* Functions definitions */
/***********************************/
+/* These functions are not used in grub and should not be referenced. */
+# if 0 /* GRUB SKIPPED IMPORTING */
extern ASN1_API int
asn1_parser2tree (const char *file,
asn1_node * definitions, char *error_desc);
@@ -326,14 +328,17 @@ extern "C"
asn1_parser2array (const char *inputFileName,
const char *outputFileName,
const char *vectorName, char *error_desc);
+# endif
extern ASN1_API int
asn1_array2tree (const asn1_static_node * array,
asn1_node * definitions, char *errorDescription);
+# if 0 /* GRUB SKIPPED IMPORTING */
extern ASN1_API void
asn1_print_structure (FILE * out, asn1_node_const structure,
const char *name, int mode);
+# endif
extern ASN1_API int
asn1_create_element (asn1_node_const definitions,
@@ -347,9 +352,11 @@ extern "C"
extern ASN1_API int
asn1_delete_element (asn1_node structure, const char *element_name);
+# if 0 /* GRUB SKIPPED IMPORTING */
extern ASN1_API int
asn1_write_value (asn1_node node_root, const char *name,
const void *ivalue, int len);
+# endif
extern ASN1_API int
asn1_read_value (asn1_node_const root, const char *name,
@@ -366,9 +373,11 @@ extern "C"
asn1_number_of_elements (asn1_node_const element, const char *name,
int *num);
+# if 0 /* GRUB SKIPPED IMPORTING */
extern ASN1_API int
asn1_der_coding (asn1_node_const element, const char *name,
void *ider, int *len, char *ErrorDescription);
+# endif
extern ASN1_API int
asn1_der_decoding2 (asn1_node * element, const void *ider,
@@ -379,6 +388,7 @@ extern "C"
asn1_der_decoding (asn1_node * element, const void *ider,
int ider_len, char *errorDescription);
+# if 0 /* GRUB SKIPPED IMPORTING */
/* Do not use. Use asn1_der_decoding() instead. */
extern ASN1_API int
asn1_der_decoding_element (asn1_node * structure,
@@ -386,6 +396,7 @@ extern "C"
const void *ider, int len,
char *errorDescription)
_ASN1_GCC_ATTR_DEPRECATED;
+# endif
extern ASN1_API int
asn1_der_decoding_startEnd (asn1_node element,
@@ -411,12 +422,16 @@ extern "C"
const char
*oidValue);
+# if 0 /* GRUB SKIPPED IMPORTING */
__LIBTASN1_PURE__
extern ASN1_API const char *asn1_check_version (const char *req_version);
+# endif
__LIBTASN1_PURE__ extern ASN1_API const char *asn1_strerror (int error);
+# if 0 /* GRUB SKIPPED IMPORTING */
extern ASN1_API void asn1_perror (int error);
+# endif
# define ASN1_MAX_TAG_SIZE 4
# define ASN1_MAX_LENGTH_SIZE 9
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 04/20] libtasn1: changes for grub compatibility
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (2 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 03/20] libtasn1: disable code not needed in grub Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 05/20] libtasn1: fix the potential buffer overrun Gary Lin via Grub-devel
` (15 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
Do a few things to make libtasn1 compile as part of grub:
- remove _asn1_strcat and replace strcat with the bound-checked
_asn1_str_cat except the one inside _asn1_str_cat. That strcat is
replaced with strcpy.
- adjust header paths in libtasn1.h
- adjust header paths to "grub/libtasn1.h".
- replace a 64 bit division with a call to grub_divmod64, preventing
creation of __udivdi3 calls on 32 bit platforms.
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/lib/libtasn1/lib/decoding.c | 8 ++++----
grub-core/lib/libtasn1/lib/element.c | 2 +-
grub-core/lib/libtasn1/lib/gstr.c | 2 +-
grub-core/lib/libtasn1/lib/int.h | 3 +--
grub-core/lib/libtasn1/lib/parser_aux.c | 2 +-
include/grub/libtasn1.h | 5 ++---
6 files changed, 10 insertions(+), 12 deletions(-)
diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
index bf9cb13ac..51859fe36 100644
--- a/grub-core/lib/libtasn1/lib/decoding.c
+++ b/grub-core/lib/libtasn1/lib/decoding.c
@@ -2016,8 +2016,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
(p2->type & CONST_ASSIGN))
{
strcpy (name, definitions->name);
- strcat (name, ".");
- strcat (name, p2->name);
+ _asn1_str_cat (name, sizeof (name), ".");
+ _asn1_str_cat (name, sizeof (name), p2->name);
len = sizeof (value);
result = asn1_read_value (definitions, name, value, &len);
@@ -2034,8 +2034,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
if (p2)
{
strcpy (name, definitions->name);
- strcat (name, ".");
- strcat (name, p2->name);
+ _asn1_str_cat (name, sizeof (name), ".");
+ _asn1_str_cat (name, sizeof (name), p2->name);
result = asn1_create_element (definitions, name, &aux);
if (result == ASN1_SUCCESS)
diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
index bc4c3c8d7..8694fecb9 100644
--- a/grub-core/lib/libtasn1/lib/element.c
+++ b/grub-core/lib/libtasn1/lib/element.c
@@ -688,7 +688,7 @@ asn1_write_value (asn1_node node_root, const char *name,
return ASN1_MEM_ERROR; \
} else { \
/* this strcat is checked */ \
- if (ptr) _asn1_strcat (ptr, data); \
+ if (ptr) _asn1_str_cat ((char *)ptr, ptr_size, (const char *)data); \
}
/**
diff --git a/grub-core/lib/libtasn1/lib/gstr.c b/grub-core/lib/libtasn1/lib/gstr.c
index eef419554..a9c16f5d3 100644
--- a/grub-core/lib/libtasn1/lib/gstr.c
+++ b/grub-core/lib/libtasn1/lib/gstr.c
@@ -36,7 +36,7 @@ _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
if (dest_tot_size - dest_size > str_size)
{
- strcat (dest, src);
+ strcpy (dest + dest_size, src);
}
else
{
diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
index d94d51c8c..7409c7655 100644
--- a/grub-core/lib/libtasn1/lib/int.h
+++ b/grub-core/lib/libtasn1/lib/int.h
@@ -35,7 +35,7 @@
# include <sys/types.h>
# endif
-# include <libtasn1.h>
+# include "grub/libtasn1.h"
# define ASN1_SMALL_VALUE_SIZE 16
@@ -115,7 +115,6 @@ extern const tag_and_class_st _asn1_tags[];
# define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
# define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
# define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
-# define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
# if SIZEOF_UNSIGNED_LONG_INT == 8
# define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c b/grub-core/lib/libtasn1/lib/parser_aux.c
index c05bd2339..e4e4c0556 100644
--- a/grub-core/lib/libtasn1/lib/parser_aux.c
+++ b/grub-core/lib/libtasn1/lib/parser_aux.c
@@ -632,7 +632,7 @@ _asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
count = 0;
do
{
- d = val / 10;
+ d = grub_divmod64(val, 10, NULL);
r = val - d * 10;
temp[start + count] = '0' + (char) r;
count++;
diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
index 058ab27b0..7d64b6ab7 100644
--- a/include/grub/libtasn1.h
+++ b/include/grub/libtasn1.h
@@ -54,9 +54,8 @@
# define __LIBTASN1_PURE__
# endif
-# include <sys/types.h>
-# include <time.h>
-# include <stdio.h> /* for FILE* */
+# include <grub/types.h>
+# include <grub/time.h>
# ifdef __cplusplus
extern "C"
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 05/20] libtasn1: fix the potential buffer overrun
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (3 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 04/20] libtasn1: changes for grub compatibility Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 06/20] libtasn1: compile into asn1 module Gary Lin via Grub-devel
` (14 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
In _asn1_tag_der(), the first while loop for the long form may end up
with a 'k' value with 'ASN1_MAX_TAG_SIZE' and cause the buffer overrun
in the second while loop. This commit tweaks the conditional check to
avoid producing a too large 'k'.
This is a quick fix and may differ from the official upstream fix.
libtasn1 issue: https://gitlab.com/gnutls/libtasn1/-/issues/49
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/lib/libtasn1/lib/coding.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/grub-core/lib/libtasn1/lib/coding.c b/grub-core/lib/libtasn1/lib/coding.c
index 5d03bca9d..0458829a5 100644
--- a/grub-core/lib/libtasn1/lib/coding.c
+++ b/grub-core/lib/libtasn1/lib/coding.c
@@ -143,7 +143,7 @@ _asn1_tag_der (unsigned char class, unsigned int tag_value,
temp[k++] = tag_value & 0x7F;
tag_value >>= 7;
- if (k > ASN1_MAX_TAG_SIZE - 1)
+ if (k >= ASN1_MAX_TAG_SIZE - 1)
break; /* will not encode larger tags */
}
*ans_len = k + 1;
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 06/20] libtasn1: compile into asn1 module
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (4 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 05/20] libtasn1: fix the potential buffer overrun Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 07/20] asn1_test: test module for libtasn1 Gary Lin via Grub-devel
` (13 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
Create a wrapper file that specifies the module license.
Set up the makefile so it is built.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
---
grub-core/Makefile.core.def | 15 +++++++++++++++
grub-core/lib/libtasn1_wrap/wrap.c | 26 ++++++++++++++++++++++++++
2 files changed, 41 insertions(+)
create mode 100644 grub-core/lib/libtasn1_wrap/wrap.c
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 007ff628e..93274bbaf 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2599,3 +2599,18 @@ module = {
efi = commands/bli.c;
enable = efi;
};
+
+module = {
+ name = asn1;
+ common = lib/libtasn1/lib/decoding.c;
+ common = lib/libtasn1/lib/coding.c;
+ common = lib/libtasn1/lib/element.c;
+ common = lib/libtasn1/lib/structure.c;
+ common = lib/libtasn1/lib/parser_aux.c;
+ common = lib/libtasn1/lib/gstr.c;
+ common = lib/libtasn1/lib/errors.c;
+ common = lib/libtasn1_wrap/wrap.c;
+ cflags = '$(CFLAGS_POSIX) $(CFLAGS_GNULIB)';
+ // -Wno-type-limits comes from libtasn1's configure.ac
+ cppflags = '$(CPPFLAGS_POSIX) $(CPPFLAGS_GNULIB) -I$(srcdir)/lib/libtasn1/lib -Wno-type-limits';
+};
diff --git a/grub-core/lib/libtasn1_wrap/wrap.c b/grub-core/lib/libtasn1_wrap/wrap.c
new file mode 100644
index 000000000..622ba942e
--- /dev/null
+++ b/grub-core/lib/libtasn1_wrap/wrap.c
@@ -0,0 +1,26 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2020 IBM Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+
+/*
+ * libtasn1 is provided under LGPL2.1+, which is compatible
+ * with GPL3+. As Grub as a whole is under GPL3+, this module
+ * is therefore under GPL3+ also.
+ */
+GRUB_MOD_LICENSE ("GPLv3+");
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 07/20] asn1_test: test module for libtasn1
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (5 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 06/20] libtasn1: compile into asn1 module Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 08/20] libtasn1: Add the documentation Gary Lin via Grub-devel
` (12 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Daniel Axtens <dja@axtens.net>
Import tests from libtasn1 that don't use functionality we don't
import. This test module is integrated into functional_test so that the
user can run the test in grub shell.
This doesn't test the full decoder but that will be exercised in
test suites for coming patch sets.
Add testcase target in accordance with
5e10be48e5 tests: Add check-native and check-nonnative make targets
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Gary Lin <glin@suse.com>
---
Makefile.util.def | 6 +
grub-core/Makefile.core.def | 13 ++
.../tests/asn1/CVE-2018-1000654-1_asn1_tab.h | 32 +++
.../tests/asn1/CVE-2018-1000654-2_asn1_tab.h | 36 +++
grub-core/tests/asn1/CVE-2018-1000654.c | 58 +++++
grub-core/tests/asn1/Test_overflow.c | 134 ++++++++++++
grub-core/tests/asn1/Test_simple.c | 205 ++++++++++++++++++
grub-core/tests/asn1/Test_strings.c | 142 ++++++++++++
grub-core/tests/asn1/asn1_test.c | 49 +++++
grub-core/tests/asn1/asn1_test.h | 44 ++++
grub-core/tests/asn1/object-id-decoding.c | 109 ++++++++++
grub-core/tests/asn1/object-id-encoding.c | 114 ++++++++++
grub-core/tests/asn1/octet-string.c | 199 +++++++++++++++++
grub-core/tests/asn1/reproducers.c | 80 +++++++
grub-core/tests/lib/functional_test.c | 1 +
tests/asn1_test.in | 11 +
16 files changed, 1233 insertions(+)
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654-1_asn1_tab.h
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654-2_asn1_tab.h
create mode 100644 grub-core/tests/asn1/CVE-2018-1000654.c
create mode 100644 grub-core/tests/asn1/Test_overflow.c
create mode 100644 grub-core/tests/asn1/Test_simple.c
create mode 100644 grub-core/tests/asn1/Test_strings.c
create mode 100644 grub-core/tests/asn1/asn1_test.c
create mode 100644 grub-core/tests/asn1/asn1_test.h
create mode 100644 grub-core/tests/asn1/object-id-decoding.c
create mode 100644 grub-core/tests/asn1/object-id-encoding.c
create mode 100644 grub-core/tests/asn1/octet-string.c
create mode 100644 grub-core/tests/asn1/reproducers.c
create mode 100644 tests/asn1_test.in
diff --git a/Makefile.util.def b/Makefile.util.def
index 9432365a9..b53afb1d3 100644
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -1250,6 +1250,12 @@ script = {
common = tests/luks2_test.in;
};
+script = {
+ testcase = native;
+ name = asn1_test;
+ common = tests/asn1_test.in;
+};
+
program = {
testcase = native;
name = example_unit_test;
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 93274bbaf..8cecb9183 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2614,3 +2614,16 @@ module = {
// -Wno-type-limits comes from libtasn1's configure.ac
cppflags = '$(CPPFLAGS_POSIX) $(CPPFLAGS_GNULIB) -I$(srcdir)/lib/libtasn1/lib -Wno-type-limits';
};
+
+module = {
+ name = asn1_test;
+ common = tests/asn1/CVE-2018-1000654.c;
+ common = tests/asn1/object-id-decoding.c;
+ common = tests/asn1/object-id-encoding.c;
+ common = tests/asn1/octet-string.c;
+ common = tests/asn1/reproducers.c;
+ common = tests/asn1/Test_overflow.c;
+ common = tests/asn1/Test_simple.c;
+ common = tests/asn1/Test_strings.c;
+ common = tests/asn1/asn1_test.c;
+};
diff --git a/grub-core/tests/asn1/CVE-2018-1000654-1_asn1_tab.h b/grub-core/tests/asn1/CVE-2018-1000654-1_asn1_tab.h
new file mode 100644
index 000000000..1e7d3d64f
--- /dev/null
+++ b/grub-core/tests/asn1/CVE-2018-1000654-1_asn1_tab.h
@@ -0,0 +1,32 @@
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <grub/libtasn1.h>
+
+const asn1_static_node CVE_2018_1000654_1_asn1_tab[] = {
+ { "TEST_TREE", 536875024, NULL },
+ { NULL, 1610612748, NULL },
+ { "iso", 1073741825, "1"},
+ { "identified-organization", 1073741825, "3"},
+ { "dod", 1073741825, "6"},
+ { "internet", 1073741825, "1"},
+ { "security", 1073741825, "5"},
+ { "mechanisms", 1073741825, "5"},
+ { "pkix", 1073741825, "7"},
+ { "id-mod", 1073741825, "0"},
+ { "id-pkix1-implicit-88", 1, "2"},
+ { "id-xnyTest", 1879048204, NULL },
+ { NULL, 1073741825, "id-ix"},
+ { NULL, 1073741825, "29"},
+ { NULL, 1, "1"},
+ { "id-ix", 1880096780, "OBJECR"},
+ { NULL, 1073741825, "id-ix"},
+ { NULL, 1073741825, "29"},
+ { NULL, 1, "2"},
+ { "id-xnyTest", 805306380, NULL },
+ { NULL, 1073741825, "id-ix"},
+ { NULL, 1073741825, "29"},
+ { NULL, 1, "1"},
+ { NULL, 0, NULL }
+};
diff --git a/grub-core/tests/asn1/CVE-2018-1000654-2_asn1_tab.h b/grub-core/tests/asn1/CVE-2018-1000654-2_asn1_tab.h
new file mode 100644
index 000000000..e2561e5ec
--- /dev/null
+++ b/grub-core/tests/asn1/CVE-2018-1000654-2_asn1_tab.h
@@ -0,0 +1,36 @@
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <grub/libtasn1.h>
+
+const asn1_static_node CVE_2018_1000654_2_asn1_tab[] = {
+ { "TEST_TREE", 536875024, NULL },
+ { NULL, 1610612748, NULL },
+ { "iso", 1073741825, "1"},
+ { "identified-organization", 1073741825, "3"},
+ { "dod", 1073741825, "6"},
+ { "internet", 1073741825, "1"},
+ { "security", 1073741825, "5"},
+ { "mechanisms", 1073741825, "5"},
+ { "pkix", 1073741825, "7"},
+ { "id-mod", 1073741825, "0"},
+ { "id-pkix1-implicit-88", 1, "2"},
+ { "id-oneTest", 1879048204, NULL },
+ { NULL, 1073741825, "id-two"},
+ { NULL, 1073741825, "9"},
+ { NULL, 1, "1"},
+ { "id-two", 1879048204, NULL },
+ { NULL, 1073741825, "id-three"},
+ { NULL, 1073741825, "2"},
+ { NULL, 1, "2"},
+ { "id-three", 1879048204, NULL },
+ { NULL, 1073741825, "id-four"},
+ { NULL, 1073741825, "3"},
+ { NULL, 1, "3"},
+ { "id-four", 805306380, NULL },
+ { NULL, 1073741825, "id-two"},
+ { NULL, 1073741825, "3"},
+ { NULL, 1, "3"},
+ { NULL, 0, NULL }
+};
diff --git a/grub-core/tests/asn1/CVE-2018-1000654.c b/grub-core/tests/asn1/CVE-2018-1000654.c
new file mode 100644
index 000000000..8911a0e1b
--- /dev/null
+++ b/grub-core/tests/asn1/CVE-2018-1000654.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2002-2018 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/****************************************************************/
+/* Description: reproducer for CVE-2018-1000654 */
+/****************************************************************/
+
+#include "asn1_test.h"
+
+#include "CVE-2018-1000654-1_asn1_tab.h"
+#include "CVE-2018-1000654-2_asn1_tab.h"
+
+int
+test_CVE_2018_1000654 (void)
+{
+ int result;
+ asn1_node definitions = NULL;
+ char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+ result = asn1_array2tree (CVE_2018_1000654_1_asn1_tab, &definitions, errorDescription);
+ if (result != ASN1_RECURSION)
+ {
+ grub_printf ("Error: %s\nErrorDescription = %s\n\n",
+ asn1_strerror (result), errorDescription);
+ return 1;
+ }
+
+ asn1_delete_structure (&definitions);
+
+ result = asn1_array2tree (CVE_2018_1000654_2_asn1_tab, &definitions, errorDescription);
+ if (result != ASN1_RECURSION)
+ {
+ grub_printf ("Error: %s\nErrorDescription = %s\n\n",
+ asn1_strerror (result), errorDescription);
+ return 1;
+ }
+
+ asn1_delete_structure (&definitions);
+
+ return 0;
+}
diff --git a/grub-core/tests/asn1/Test_overflow.c b/grub-core/tests/asn1/Test_overflow.c
new file mode 100644
index 000000000..aff6b410a
--- /dev/null
+++ b/grub-core/tests/asn1/Test_overflow.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2012-2014 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/* Written by Simon Josefsson */
+
+#include "asn1_test.h"
+
+int
+test_overflow(void)
+{
+ /* Test that values larger than long are rejected. This has worked
+ fine with all versions of libtasn1. */
+
+ {
+ unsigned char der[] = "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF";
+ long l;
+ int len;
+
+ l = asn1_get_length_der (der, sizeof der, &len);
+
+ if (l != -2L)
+ {
+ grub_printf ("ERROR: asn1_get_length_der bignum (l %ld len %d)\n", l, len);
+ return 1;
+ }
+ }
+
+ /* Test that values larger than int but smaller than long are
+ rejected. This limitation was introduced with libtasn1 2.12. */
+#if (GRUB_LONG_MAX > GRUB_INT_MAX)
+ {
+ unsigned long num = ((long) GRUB_UINT_MAX) << 2;
+ unsigned char der[20];
+ int der_len;
+ long l;
+ int len;
+
+ asn1_length_der (num, der, &der_len);
+
+ l = asn1_get_length_der (der, der_len, &len);
+
+ if (l != -2L)
+ {
+ grub_printf ("ERROR: asn1_get_length_der intnum (l %ld len %d)\n", l,
+ len);
+ return 1;
+ }
+ }
+#endif
+
+ /* Test that values larger than would fit in the input string are
+ rejected. This problem was fixed in libtasn1 2.12. */
+ {
+ unsigned long num = 64;
+ unsigned char der[20];
+ int der_len;
+ long l;
+ int len;
+
+ asn1_length_der (num, der, &der_len);
+
+ der_len = sizeof (der);
+ l = asn1_get_length_der (der, der_len, &len);
+
+ if (l != -4L)
+ {
+ grub_printf ("ERROR: asn1_get_length_der overflow-small (l %ld len %d)\n",
+ l, len);
+ return 1;
+ }
+ }
+
+ /* Test that values larger than would fit in the input string are
+ rejected. This problem was fixed in libtasn1 2.12. */
+ {
+ unsigned long num = 1073741824;
+ unsigned char der[20];
+ int der_len;
+ long l;
+ int len;
+
+ asn1_length_der (num, der, &der_len);
+
+ der_len = sizeof (der);
+ l = asn1_get_length_der (der, der_len, &len);
+
+ if (l != -4L)
+ {
+ grub_printf ("ERROR: asn1_get_length_der overflow-large1 (l %ld len %d)\n",
+ l, len);
+ return 1;
+ }
+ }
+
+ /* Test that values larger than would fit in the input string are
+ rejected. This problem was fixed in libtasn1 2.12. */
+ {
+ unsigned long num = 2147483649;
+ unsigned char der[20];
+ int der_len;
+ long l;
+ int len;
+
+ asn1_length_der (num, der, &der_len);
+
+ der_len = sizeof (der);
+ l = asn1_get_length_der (der, der_len, &len);
+
+ if (l != -2L)
+ {
+ grub_printf ("ERROR: asn1_get_length_der overflow-large2 (l %ld len %d)\n",
+ l, len);
+ return 1;
+ }
+ }
+ return 0;
+}
diff --git a/grub-core/tests/asn1/Test_simple.c b/grub-core/tests/asn1/Test_simple.c
new file mode 100644
index 000000000..832ca78c6
--- /dev/null
+++ b/grub-core/tests/asn1/Test_simple.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2011-2014 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson
+ *
+ */
+
+#include "asn1_test.h"
+
+struct tv
+{
+ int bitlen;
+ const char *bitstr;
+ int derlen;
+ const char *der;
+};
+
+static const struct tv tv[] = {
+ {0, "", 2, "\x01\x00"},
+ {1, "\x00", 3, "\x02\x07\x00"},
+ {2, "\x00", 3, "\x02\x06\x00"},
+ {3, "\x00", 3, "\x02\x05\x00"},
+ {4, "\x00", 3, "\x02\x04\x00"},
+ {5, "\x00", 3, "\x02\x03\x00"},
+ {6, "\x00", 3, "\x02\x02\x00"},
+ {7, "\x00", 3, "\x02\x01\x00"},
+ {8, "\x00\x00", 3, "\x02\x00\x00"},
+ {9, "\x00\x00", 4, "\x03\x07\x00\x00"},
+ {10, "\x00\x00", 4, "\x03\x06\x00\x00"},
+ {11, "\x00\x00", 4, "\x03\x05\x00\x00"},
+ {12, "\x00\x00", 4, "\x03\x04\x00\x00"},
+ {13, "\x00\x00", 4, "\x03\x03\x00\x00"},
+ {14, "\x00\x00", 4, "\x03\x02\x00\x00"},
+ {15, "\x00\x00", 4, "\x03\x01\x00\x00"},
+ {16, "\x00\x00", 4, "\x03\x00\x00\x00"},
+ {17, "\x00\x00\x00", 5, "\x04\x07\x00\x00\x00"},
+ {18, "\x00\x00\x00", 5, "\x04\x06\x00\x00\x00"},
+ {19, "\x00\x00\x00", 5, "\x04\x05\x00\x00\x00"},
+ {1, "\xFF", 3, "\x02\x07\x80"},
+ {2, "\xFF", 3, "\x02\x06\xc0"},
+ {3, "\xFF", 3, "\x02\x05\xe0"},
+ {4, "\xFF", 3, "\x02\x04\xf0"},
+ {5, "\xFF", 3, "\x02\x03\xf8"},
+ {6, "\xFF", 3, "\x02\x02\xfc"},
+ {7, "\xFF", 3, "\x02\x01\xfe"},
+ {8, "\xFF\xFF", 3, "\x02\x00\xff"},
+ {9, "\xFF\xFF", 4, "\x03\x07\xff\x80"},
+ {10, "\xFF\xFF", 4, "\x03\x06\xff\xc0"},
+ {11, "\xFF\xFF", 4, "\x03\x05\xff\xe0"},
+ {12, "\xFF\xFF", 4, "\x03\x04\xff\xf0"},
+ {13, "\xFF\xFF", 4, "\x03\x03\xff\xf8"},
+ {14, "\xFF\xFF", 4, "\x03\x02\xff\xfc"},
+ {15, "\xFF\xFF", 4, "\x03\x01\xff\xfe"},
+ {16, "\xFF\xFF", 4, "\x03\x00\xff\xff"},
+ {17, "\xFF\xFF\xFF", 5, "\x04\x07\xff\xff\x80"},
+ {18, "\xFF\xFF\xFF", 5, "\x04\x06\xff\xff\xc0"},
+ {19, "\xFF\xFF\xFF", 5, "\x04\x05\xff\xff\xe0"},
+};
+
+int
+test_simple (void)
+{
+ int result;
+ unsigned char der[100];
+ unsigned char str[100];
+ int der_len = sizeof (der);
+ int str_size = sizeof (str);
+ int ret_len, bit_len;
+ grub_size_t i;
+
+ /* Dummy test */
+
+ asn1_bit_der (NULL, 0, der, &der_len);
+ result = asn1_get_bit_der (der, 0, &ret_len, str, str_size, &bit_len);
+ if (result != ASN1_GENERIC_ERROR)
+ {
+ grub_printf ("asn1_get_bit_der zero\n");
+ return 1;
+ }
+
+ /* Encode short strings with increasing bit lengths */
+
+ for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+ {
+ /* Encode */
+
+ asn1_bit_der ((const unsigned char *) tv[i].bitstr, tv[i].bitlen,
+ der, &der_len);
+
+#if 0
+ {
+ size_t j;
+ for (j = 0; j < der_len; j++)
+ printf ("\\x%02x", der[j]);
+ printf ("\n");
+ }
+#endif
+
+ if (der_len != tv[i].derlen || grub_memcmp (der, tv[i].der, der_len) != 0)
+ {
+ grub_printf ("asn1_bit_der iter %lu\n", (unsigned long) i);
+ return 1;
+ }
+
+ /* Decode it */
+
+ result = asn1_get_bit_der (der, der_len, &ret_len, str,
+ str_size, &bit_len);
+ if (result != ASN1_SUCCESS || ret_len != tv[i].derlen
+ || bit_len != tv[i].bitlen)
+ {
+ grub_printf ("asn1_get_bit_der iter %lu, err: %d\n", (unsigned long) i, result);
+ return 1;
+ }
+ }
+
+
+ /* Decode sample from "A Layman's Guide to a Subset of ASN.1, BER,
+ and DER" section 5.4 "BIT STRING": "The BER encoding of the BIT
+ STRING value "011011100101110111" can be any of the following,
+ among others, depending on the choice of padding bits, the form
+ of length octets [...]".
+ */
+
+ /* 03 04 06 6e 5d c0 DER encoding */
+
+ grub_memcpy (der, "\x04\x06\x6e\x5d\xc0", 5);
+ der_len = 5;
+
+ result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+ if (result != ASN1_SUCCESS || ret_len != 5
+ || bit_len != 18 || grub_memcmp (str, "\x6e\x5d\xc0", 3) != 0)
+ {
+ grub_printf ("asn1_get_bit_der example\n");
+ return 1;
+ }
+
+ der_len = sizeof (der);
+ asn1_bit_der (str, bit_len, der, &der_len);
+ if (der_len != 5 || grub_memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+ {
+ grub_printf ("asn1_bit_der example roundtrip\n");
+ return 1;
+ }
+
+ /* 03 04 06 6e 5d e0 padded with "100000" */
+
+ grub_memcpy (der, "\x04\x06\x6e\x5d\xe0", 5);
+ der_len = 5;
+
+ result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+ if (result != ASN1_SUCCESS || ret_len != 5
+ || bit_len != 18 || grub_memcmp (str, "\x6e\x5d\xe0", 3) != 0)
+ {
+ grub_printf ("asn1_get_bit_der example padded\n");
+ return 1;
+ }
+
+ der_len = sizeof (der);
+ asn1_bit_der (str, bit_len, der, &der_len);
+ if (der_len != 5 || grub_memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+ {
+ grub_printf ("asn1_bit_der example roundtrip\n");
+ return 1;
+ }
+
+ /* 03 81 04 06 6e 5d c0 long form of length octets */
+
+ grub_memcpy (der, "\x81\x04\x06\x6e\x5d\xc0", 6);
+ der_len = 6;
+
+ result = asn1_get_bit_der (der, der_len, &ret_len, str, str_size, &bit_len);
+
+ if (result != ASN1_SUCCESS || ret_len != 6
+ || bit_len != 18 || grub_memcmp (str, "\x6e\x5d\xc0", 3) != 0)
+ {
+ grub_printf ("asn1_get_bit_der example long form\n");
+ return 1;
+ }
+
+ der_len = sizeof (der);
+ asn1_bit_der (str, bit_len, der, &der_len);
+ if (der_len != 5 || grub_memcmp (der, "\x04\x06\x6e\x5d\xc0", 5) != 0)
+ {
+ grub_printf ("asn1_bit_der example roundtrip\n");
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/grub-core/tests/asn1/Test_strings.c b/grub-core/tests/asn1/Test_strings.c
new file mode 100644
index 000000000..212e074d8
--- /dev/null
+++ b/grub-core/tests/asn1/Test_strings.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2012-2014 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson
+ *
+ */
+
+#include "asn1_test.h"
+
+struct tv
+{
+ unsigned int etype;
+ unsigned int str_len;
+ const void *str;
+ unsigned int der_len;
+ const void *der;
+};
+
+static const struct tv tv[] = {
+ {ASN1_ETYPE_IA5_STRING, 20,
+ "\x63\x73\x63\x61\x40\x70\x61\x73\x73\x70\x6f\x72\x74\x2e\x67\x6f\x76\x2e\x67\x72",
+ 22,
+ "\x16\x14\x63\x73\x63\x61\x40\x70\x61\x73\x73\x70\x6f\x72\x74\x2e\x67\x6f\x76\x2e\x67\x72"},
+ {ASN1_ETYPE_PRINTABLE_STRING, 5, "\x4e\x69\x6b\x6f\x73",
+ 7, "\x13\x05\x4e\x69\x6b\x6f\x73"},
+ {ASN1_ETYPE_UTF8_STRING, 12, "Αττική",
+ 14, "\x0c\x0c\xce\x91\xcf\x84\xcf\x84\xce\xb9\xce\xba\xce\xae"},
+ {ASN1_ETYPE_TELETEX_STRING, 15,
+ "\x53\x69\x6d\x6f\x6e\x20\x4a\x6f\x73\x65\x66\x73\x73\x6f\x6e",
+ 17,
+ "\x14\x0f\x53\x69\x6d\x6f\x6e\x20\x4a\x6f\x73\x65\x66\x73\x73\x6f\x6e"},
+ {ASN1_ETYPE_OCTET_STRING, 36,
+ "\x30\x22\x80\x0F\x32\x30\x31\x31\x30\x38\x32\x31\x30\x38\x30\x30\x30\x36\x5A\x81\x0F\x32\x30\x31\x31\x30\x38\x32\x33\x32\x30\x35\x39\x35\x39\x5A",
+ 38,
+ "\x04\x24\x30\x22\x80\x0F\x32\x30\x31\x31\x30\x38\x32\x31\x30\x38\x30\x30\x30\x36\x5A\x81\x0F\x32\x30\x31\x31\x30\x38\x32\x33\x32\x30\x35\x39\x35\x39\x5A"}
+};
+
+#define SSTR(x) sizeof(x)-1,x
+static const struct tv ber[] = {
+ {ASN1_ETYPE_OCTET_STRING,
+ SSTR("\xa0\xa0"),
+ SSTR("\x24\x80\x04\x82\x00\x02\xa0\xa0\x00\x00")},
+ {ASN1_ETYPE_OCTET_STRING,
+ SSTR("\xa0\xa0\xb0\xb0\xb0"),
+ SSTR("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x00\x00")},
+ {ASN1_ETYPE_OCTET_STRING,
+ SSTR("\xa0\xa0\xb0\xb0\xb0\xa1\xa1"),
+ SSTR("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x24\x80\x04\x82\x00\x02\xa1\xa1\x00\x00\x00\x00")},
+ {ASN1_ETYPE_OCTET_STRING,
+ SSTR("\xa0\xa0\xb0\xb0\xb0\xa1\xa1\xc1"),
+ SSTR("\x24\x80\x04\x82\x00\x02\xa0\xa0\x04\x82\x00\x03\xb0\xb0\xb0\x24\x80\x04\x82\x00\x02\xa1\xa1\x04\x82\x00\x01\xc1\x00\x00\x00\x00")},
+};
+
+int
+test_strings ()
+{
+ int ret;
+ unsigned char tl[ASN1_MAX_TL_SIZE];
+ unsigned int tl_len, der_len, str_len;
+ const unsigned char *str;
+ unsigned char *b;
+ unsigned int i;
+
+ /* Dummy test */
+
+ for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+ {
+ /* Encode */
+ tl_len = sizeof (tl);
+ ret = asn1_encode_simple_der (tv[i].etype, tv[i].str, tv[i].str_len,
+ tl, &tl_len);
+ if (ret != ASN1_SUCCESS)
+ {
+ grub_printf ("Encoding error in %u: %s\n", i, asn1_strerror (ret));
+ return 1;
+ }
+ der_len = tl_len + tv[i].str_len;
+
+ if (der_len != tv[i].der_len || grub_memcmp (tl, tv[i].der, tl_len) != 0)
+ {
+ grub_printf ("DER encoding differs in %u! (size: %u, expected: %u)\n",
+ i, der_len, tv[i].der_len);
+ return 1;
+ }
+
+ /* decoding */
+ ret =
+ asn1_decode_simple_der (tv[i].etype, tv[i].der, tv[i].der_len, &str,
+ &str_len);
+ if (ret != ASN1_SUCCESS)
+ {
+ grub_printf ("Decoding error in %u: %s\n", i, asn1_strerror (ret));
+ return 1;
+ }
+
+ if (str_len != tv[i].str_len || grub_memcmp (str, tv[i].str, str_len) != 0)
+ {
+ grub_printf ("DER decoded data differ in %u! (size: %u, expected: %u)\n",
+ i, der_len, tv[i].str_len);
+ return 1;
+ }
+ }
+
+ /* BER decoding */
+ for (i = 0; i < sizeof (ber) / sizeof (ber[0]); i++)
+ {
+ /* decoding */
+ ret =
+ asn1_decode_simple_ber (ber[i].etype, ber[i].der, ber[i].der_len, &b,
+ &str_len, NULL);
+ if (ret != ASN1_SUCCESS)
+ {
+ grub_printf ("BER decoding error in %u: %s\n", i, asn1_strerror (ret));
+ return 1;
+ }
+
+ if (str_len != ber[i].str_len || grub_memcmp (b, ber[i].str, str_len) != 0)
+ {
+ grub_printf ("BER decoded data differ in %u! (size: %u, expected: %u)\n",
+ i, str_len, ber[i].str_len);
+ return 1;
+ }
+ grub_free(b);
+ }
+
+ return 0;
+}
diff --git a/grub-core/tests/asn1/asn1_test.c b/grub-core/tests/asn1/asn1_test.c
new file mode 100644
index 000000000..2a2cd02d1
--- /dev/null
+++ b/grub-core/tests/asn1/asn1_test.c
@@ -0,0 +1,49 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2020 IBM Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/test.h>
+#include <grub/dl.h>
+#include "asn1_test.h"
+
+/*
+ * libtasn1 tests - from which this is derived - are provided under GPL3+.
+ */
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static void
+asn1_test (void)
+{
+ grub_test_assert (test_CVE_2018_1000654 () == 0, "CVE-2018-1000654 test failed");
+
+ grub_test_assert (test_object_id_encoding () == 0, "ASN.1 object ID encoding test failed");
+
+ grub_test_assert (test_object_id_decoding () == 0, "ASN.1 object ID decoding test failed");
+
+ grub_test_assert (test_octet_string () == 0, "ASN.1 octet string test failed");
+
+ grub_test_assert (test_overflow () == 0, "ASN.1 overflow test failed");
+
+ grub_test_assert (test_reproducers () == 0, "ASN.1 reproducers test failed");
+
+ grub_test_assert (test_simple () == 0, "ASN.1 simple test failed");
+
+ grub_test_assert (test_strings () == 0, "ASN.1 strings test fail" );
+}
+
+/* Register asn1_test method as a functional test. */
+GRUB_FUNCTIONAL_TEST (asn1_test, asn1_test);
diff --git a/grub-core/tests/asn1/asn1_test.h b/grub-core/tests/asn1/asn1_test.h
new file mode 100644
index 000000000..d30e89dee
--- /dev/null
+++ b/grub-core/tests/asn1/asn1_test.h
@@ -0,0 +1,44 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2020 IBM Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBTASN1_WRAP_TESTS_H
+#define LIBTASN1_WRAP_TESTS_H
+
+#include <grub/libtasn1.h>
+#include <grub/err.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/types.h>
+
+int test_CVE_2018_1000654 (void);
+
+int test_object_id_encoding (void);
+
+int test_object_id_decoding (void);
+
+int test_octet_string (void);
+
+int test_overflow (void);
+
+int test_reproducers (void);
+
+int test_simple (void);
+
+int test_strings (void);
+
+#endif
diff --git a/grub-core/tests/asn1/object-id-decoding.c b/grub-core/tests/asn1/object-id-decoding.c
new file mode 100644
index 000000000..515a27232
--- /dev/null
+++ b/grub-core/tests/asn1/object-id-decoding.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2016 Red Hat, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "asn1_test.h"
+
+struct tv
+{
+ int der_len;
+ const unsigned char *der;
+ const char *oid;
+ int expected_error;
+};
+
+static const struct tv tv[] = {
+ {.der_len = 5,
+ .der = (void *) "\x06\x03\x80\x37\x03",
+ .oid = "2.999.3",
+ .expected_error = ASN1_DER_ERROR /* leading 0x80 */
+ },
+ {.der_len = 12,
+ .der = (void *) "\x06\x0a\x2b\x06\x01\x80\x01\x92\x08\x09\x05\x01",
+ .oid = "1.3.6.1.4.1.2312.9.5.1",
+ .expected_error = ASN1_DER_ERROR /* leading 0x80 */
+ },
+ {.der_len = 6,
+ .der = (void *) "\x06\x04\x01\x02\x03\x04",
+ .oid = "0.1.2.3.4",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 5,
+ .der = (void *) "\x06\x03\x51\x02\x03",
+ .oid = "2.1.2.3",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 5,
+ .der = (void *) "\x06\x03\x88\x37\x03",
+ .oid = "2.999.3",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 12,
+ .der = (void *) "\x06\x0a\x2b\x06\x01\x04\x01\x92\x08\x09\x05\x01",
+ .oid = "1.3.6.1.4.1.2312.9.5.1",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 19,
+ .der = (void *) "\x06\x11\xfa\x80\x00\x00\x00\x0e\x01\x0e\xfa\x80\x00\x00\x00\x0e\x63\x6f\x6d",
+ .oid = "2.1998768.0.0.14.1.14.1998848.0.0.14.99.111.109",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 19,
+ .der =
+ (void *)
+ "\x06\x11\x2b\x06\x01\x04\x01\x92\x08\x09\x02\xaa\xda\xbe\xbe\xfa\x72\x01\x07",
+ .oid = "1.3.6.1.4.1.2312.9.2.1467399257458.1.7",
+ .expected_error = ASN1_SUCCESS},
+};
+
+int
+test_object_id_decoding (void)
+{
+ char str[128];
+ int ret, ret_len;
+ grub_size_t i;
+
+ for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+ {
+ /* decode */
+ ret =
+ asn1_get_object_id_der (tv[i].der+1,
+ tv[i].der_len-1, &ret_len, str,
+ sizeof (str));
+ if (ret != tv[i].expected_error)
+ {
+ grub_printf ("%d: asn1_get_object_id_der iter %lu: got '%s' expected %d\n",
+ __LINE__, (unsigned long) i, asn1_strerror(ret), tv[i].expected_error);
+ return 1;
+ }
+
+ if (tv[i].expected_error != ASN1_SUCCESS)
+ continue;
+
+ if (ret_len != tv[i].der_len-1)
+ {
+ grub_printf ("%d: iter %lu: error in DER, length returned is %d, had %d\n",
+ __LINE__, (unsigned long)i, ret_len, tv[i].der_len-1);
+ return 1;
+ }
+
+ if (grub_strcmp (tv[i].oid, str) != 0)
+ {
+ grub_printf ("%d: strcmp iter %lu: got invalid OID: %s, expected: %s\n",
+ __LINE__, (unsigned long) i, str, tv[i].oid);
+ return 1;
+ }
+ }
+ return 0;
+}
diff --git a/grub-core/tests/asn1/object-id-encoding.c b/grub-core/tests/asn1/object-id-encoding.c
new file mode 100644
index 000000000..065de0161
--- /dev/null
+++ b/grub-core/tests/asn1/object-id-encoding.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2019 Nikos Mavrogiannopoulos
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "asn1_test.h"
+
+struct tv
+{
+ int der_len;
+ const unsigned char *der;
+ const char *oid;
+ int expected_error;
+};
+
+static const struct tv tv[] = {
+ {.der_len = 0,
+ .der = (void *) "",
+ .oid = "5.999.3",
+ .expected_error = ASN1_VALUE_NOT_VALID /* cannot start with 5 */
+ },
+ {.der_len = 0,
+ .der = (void *) "",
+ .oid = "0.48.9",
+ .expected_error = ASN1_VALUE_NOT_VALID /* second field cannot be 48 */
+ },
+ {.der_len = 0,
+ .der = (void *) "",
+ .oid = "1.40.9",
+ .expected_error = ASN1_VALUE_NOT_VALID /* second field cannot be 40 */
+ },
+ {.der_len = 4,
+ .der = (void *) "\x06\x02\x4f\x63",
+ .oid = "1.39.99",
+ .expected_error = ASN1_SUCCESS,
+ },
+ {.der_len = 6,
+ .der = (void *) "\x06\x04\x01\x02\x03\x04",
+ .oid = "0.1.2.3.4",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 5,
+ .der = (void *) "\x06\x03\x51\x02\x03",
+ .oid = "2.1.2.3",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 5,
+ .der = (void *) "\x06\x03\x88\x37\x03",
+ .oid = "2.999.3",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 12,
+ .der = (void *) "\x06\x0a\x2b\x06\x01\x04\x01\x92\x08\x09\x05\x01",
+ .oid = "1.3.6.1.4.1.2312.9.5.1",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 19,
+ .der = (void *) "\x06\x11\xfa\x80\x00\x00\x00\x0e\x01\x0e\xfa\x80\x00\x00\x00\x0e\x63\x6f\x6d",
+ .oid = "2.1998768.0.0.14.1.14.1998848.0.0.14.99.111.109",
+ .expected_error = ASN1_SUCCESS},
+ {.der_len = 19,
+ .der =
+ (void *)
+ "\x06\x11\x2b\x06\x01\x04\x01\x92\x08\x09\x02\xaa\xda\xbe\xbe\xfa\x72\x01\x07",
+ .oid = "1.3.6.1.4.1.2312.9.2.1467399257458.1.7",
+ .expected_error = ASN1_SUCCESS},
+};
+
+int
+test_object_id_encoding(void)
+{
+ unsigned char der[128];
+ int ret, der_len, i;
+
+ for (i = 0; i < (int)(sizeof (tv) / sizeof (tv[0])); i++)
+ {
+ der_len = sizeof(der);
+ ret = asn1_object_id_der(tv[i].oid, der, &der_len, 0);
+ if (ret != ASN1_SUCCESS)
+ {
+ if (ret == tv[i].expected_error)
+ continue;
+ grub_printf ("%d: iter %lu, encoding of OID failed: %s\n",
+ __LINE__, (unsigned long) i, asn1_strerror(ret));
+ return 1;
+ }
+ else if (ret != tv[i].expected_error)
+ {
+ grub_printf ("%d: iter %lu, encoding of OID %s succeeded when expecting failure\n",
+ __LINE__, (unsigned long) i, tv[i].oid);
+ return 1;
+ }
+
+ if (der_len != tv[i].der_len || grub_memcmp(der, tv[i].der, der_len) != 0)
+ {
+ grub_printf ("%d: iter %lu, re-encoding of OID %s resulted to different string (%d vs %d bytes)\n",
+ __LINE__, (unsigned long) i, tv[i].oid, der_len, tv[i].der_len);
+
+ return 1;
+ }
+ }
+ return 0;
+}
diff --git a/grub-core/tests/asn1/octet-string.c b/grub-core/tests/asn1/octet-string.c
new file mode 100644
index 000000000..3b2529d6f
--- /dev/null
+++ b/grub-core/tests/asn1/octet-string.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2011-2020 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Written by Simon Josefsson and Nikos Mavrogiannopoulos
+ *
+ */
+
+#include "asn1_test.h"
+
+
+struct tv
+{
+ const char *name;
+ int der_len;
+ const unsigned char *der_str;
+ int len;
+ const unsigned char *string;
+ int expected_error;
+ int ber;
+};
+
+static const struct tv tv[] = {
+ {.name = "primitive octet strings",
+ .der_len = 10,
+ .der_str =
+ (void*)"\x04\x08\x01\x23\x45\x67\x89\xab\xcd\xef",
+ .len = 8,
+ .string =
+ (void*)"\x01\x23\x45\x67\x89\xab\xcd\xef",
+ .ber = 0},
+ {.der_len = 22,
+ .der_str =
+ (void*)"\x04\x14\x13\x00\xd9\xa8\x47\xf7\xf2\x1c\xf4\xb0\xec\x5f\xc1\x73\xe5\x1b\x25\xc2\x62\x27",
+ .len = 20,
+ .string =
+ (void*)"\x13\x00\xD9\xA8\x47\xF7\xF2\x1C\xF4\xB0\xEC\x5F\xC1\x73\xE5\x1B\x25\xC2\x62\x27"},
+
+ {.name = "long type of length",
+ .der_len = 23,
+ .der_str =
+ (void*)"\x04\x81\x14\x13\x00\xd9\xa8\x47\xf7\xf2\x1c\xf4\xb0\xec\x5f\xc1\x73\xe5\x1b\x25\xc2\x62\x27",
+ .len = 20,
+ .string =
+ (void*)"\x13\x00\xD9\xA8\x47\xF7\xF2\x1C\xF4\xB0\xEC\x5F\xC1\x73\xE5\x1B\x25\xC2\x62\x27",
+ .ber = 1},
+ {.der_len = 11,
+ .der_str =
+ (void*)"\x04\x81\x08\x01\x23\x45\x67\x89\xab\xcd\xef",
+ .len = 8,
+ .string =
+ (void*)"\x01\x23\x45\x67\x89\xab\xcd\xef",
+ .ber = 1},
+
+ {.name = "constructed - indefinite",
+ .der_len = 11,
+ .der_str = (void*)"\x24\x80\x04\x05\x01\x02\x03\x04\x05\x00\x00",
+ .len = 5,
+ .string = (void*)"\x01\x02\x03\x04\x05",
+ .ber = 1,
+ },
+
+ {.name = "constructed - definite - concat",
+ .der_len = 12,
+ .der_str = (void*)"\x24\x0a\x04\x04\x0a\x0b\x0c\x0d\x04\x02\x0e\x0f",
+ .len = 6,
+ .string = (void*)"\x0a\x0b\x0c\x0d\x0e\x0f",
+ .ber = 1,
+ },
+ {.name = "constructed - definite - recursive",
+ .der_len = 15,
+ .der_str = (void*)"\x24\x0d\x04\x04\x0a\x0b\x0c\x0d\x24\x05\x04\x00\x04\x01\x0f",
+ .len = 5,
+ .string = (void*)"\x0a\x0b\x0c\x0d\x0f",
+ .ber = 1,
+ },
+ {.name = "constructed - definite - single",
+ .der_len = 7,
+ .der_str = (void*)"\x24\x05\x04\x03\x01\x02\x03",
+ .len = 3,
+ .string = (void*)"\x01\x02\x03",
+ .ber = 1,
+ },
+
+ /* a large amount of recursive indefinite encoding */
+ {.name = "a large amount of recursive indefinite encoding",
+ .der_len = 29325,
+ .der_str = 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+ .len = 0,
+ .ber = 1,
+ .expected_error = ASN1_DER_ERROR
+ }
+};
+
+int
+test_octet_string (void)
+{
+ unsigned char str[100];
+ unsigned char der[100];
+ int der_len = sizeof (der);
+ int str_size = sizeof (str);
+ unsigned char *tmp = NULL;
+ int ret, ret_len;
+ grub_size_t i;
+
+ for (i = 0; i < sizeof (tv) / sizeof (tv[0]); i++)
+ {
+ /* Decode */
+
+ if (tv[i].ber == 0)
+ {
+ str_size = sizeof (str);
+ ret =
+ asn1_get_octet_der (tv[i].der_str + 1,
+ tv[i].der_len - 1, &ret_len, str,
+ sizeof (str), &str_size);
+ if (ret != tv[i].expected_error)
+ {
+ grub_printf ("%d: asn1_get_octet_der: %s: got %d expected %d\n",
+ __LINE__, tv[i].name, ret, tv[i].expected_error);
+ return 1;
+ }
+ if (tv[i].expected_error)
+ continue;
+
+ if (ret_len != tv[i].der_len - 1)
+ {
+ grub_printf ("%d: error in DER, length returned is %d, had %d\n",
+ __LINE__, ret_len, tv[i].der_len - 1);
+ return 1;
+ }
+
+ if (str_size != tv[i].len
+ || grub_memcmp (tv[i].string, str, tv[i].len) != 0)
+ {
+ grub_printf ("%d: memcmp: %s: got invalid decoding\n",
+ __LINE__, tv[i].name);
+
+ return 1;
+ }
+
+ /* Encode */
+ der_len = sizeof (der);
+ asn1_octet_der (str, str_size, der, &der_len);
+
+ if (der_len != tv[i].der_len - 1
+ || grub_memcmp (tv[i].der_str + 1, der, tv[i].der_len - 1) != 0)
+ {
+ grub_printf ("encoding: %s: got invalid encoding\n", tv[i].name);
+ return 1;
+ }
+ }
+
+ ret =
+ asn1_decode_simple_ber (ASN1_ETYPE_OCTET_STRING,
+ tv[i].der_str, tv[i].der_len,
+ &tmp, (unsigned int*)&str_size, (unsigned int*)&der_len);
+ if (ret != tv[i].expected_error)
+ {
+ grub_printf ("%d: asn1_decode_simple_ber: %s: got %s expected %s\n",
+ __LINE__, tv[i].name, asn1_strerror(ret),
+ asn1_strerror(tv[i].expected_error));
+ return 1;
+ }
+ if (tv[i].expected_error)
+ continue;
+
+ if (der_len != tv[i].der_len)
+ {
+ grub_printf ("%d: error: %s: DER, length returned is %d, had %d\n",
+ __LINE__, tv[i].name, der_len, tv[i].der_len);
+ return 1;
+ }
+
+ if (str_size != tv[i].len || grub_memcmp (tv[i].string, tmp, tv[i].len) != 0)
+ {
+ grub_printf ("%d: memcmp: %s: got invalid decoding\n", __LINE__, tv[i].name);
+ return 1;
+ }
+ grub_free (tmp);
+ tmp = NULL;
+
+ }
+ return 0;
+}
diff --git a/grub-core/tests/asn1/reproducers.c b/grub-core/tests/asn1/reproducers.c
new file mode 100644
index 000000000..c400a4b34
--- /dev/null
+++ b/grub-core/tests/asn1/reproducers.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 Free Software Foundation, Inc.
+ *
+ * This file is part of LIBTASN1.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/****************************************************************/
+/* Description: run reproducers for several fixed issues */
+/****************************************************************/
+
+#include "asn1_test.h"
+
+#define CONST_DOWN (1U<<29)
+
+/* produces endless loop (fixed by d4b624b2):
+ * The following translates into a single node with all pointers
+ * (right,left,down) set to NULL. */
+const asn1_static_node endless_asn1_tab[] = {
+ { "TEST_TREE", 536875024, NULL },
+ { NULL, 0, NULL }
+};
+
+/* produces memory leak (fixed by f16d1ff9):
+ * 152 bytes in 1 blocks are definitely lost in loss record 1 of 1
+ * at 0x4837B65: calloc (vg_replace_malloc.c:762)
+ * by 0x4851C0D: _asn1_add_static_node (parser_aux.c:71)
+ * by 0x4853AAC: asn1_array2tree (structure.c:200)
+ * by 0x10923B: main (single_node.c:67)
+ */
+const asn1_static_node tab[] = {
+{ "a", CONST_DOWN, "" },
+{ "b", 0, "" },
+{ "c", 0, "" },
+{ NULL, 0, NULL }
+};
+
+int
+test_reproducers (void)
+{
+ int result;
+ asn1_node definitions = NULL;
+ char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
+
+ result = asn1_array2tree (endless_asn1_tab, &definitions, errorDescription);
+ if (result != ASN1_SUCCESS)
+ {
+ grub_printf ("Error: %s\nErrorDescription = %s\n\n",
+ asn1_strerror (result), errorDescription);
+ return 1;
+ }
+
+ asn1_delete_structure (&definitions);
+
+ definitions = NULL;
+ result = asn1_array2tree (tab, &definitions, errorDescription);
+ if (result != ASN1_SUCCESS)
+ {
+ grub_printf ("Error: %s\nErrorDescription = %s\n\n",
+ asn1_strerror (result), errorDescription);
+ return 1;
+ }
+
+ asn1_delete_structure (&definitions);
+
+ return 0;
+}
diff --git a/grub-core/tests/lib/functional_test.c b/grub-core/tests/lib/functional_test.c
index 96781fb39..38e981f2c 100644
--- a/grub-core/tests/lib/functional_test.c
+++ b/grub-core/tests/lib/functional_test.c
@@ -79,6 +79,7 @@ grub_functional_all_tests (grub_extcmd_context_t ctxt __attribute__ ((unused)),
grub_dl_load ("cmp_test");
grub_dl_load ("mul_test");
grub_dl_load ("shift_test");
+ grub_dl_load ("asn1_test");
FOR_LIST_ELEMENTS (test, grub_test_list)
ok = !grub_test_run (test) && ok;
diff --git a/tests/asn1_test.in b/tests/asn1_test.in
new file mode 100644
index 000000000..8f18ee6bb
--- /dev/null
+++ b/tests/asn1_test.in
@@ -0,0 +1,11 @@
+#! @BUILD_SHEBANG@
+set -e
+
+. "@builddir@/grub-core/modinfo.sh"
+
+out=`echo functional_test asn1_test | @builddir@/grub-shell`
+
+if [ "$(echo "$out" | tail -n 1)" != "ALL TESTS PASSED" ]; then
+ echo "ASN.1 test failure: $out"
+ exit 1
+fi
--
2.35.3
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^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 08/20] libtasn1: Add the documentation
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (6 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 07/20] asn1_test: test module for libtasn1 Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 09/20] key_protector: Add key protectors framework Gary Lin via Grub-devel
` (11 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
Document libtasn1 in docs/grub-dev.texi and add the upgrade steps.
Also add the patches to make libtasn1 compatible with grub code.
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
---
docs/grub-dev.texi | 28 ++
...asn1-disable-code-not-needed-in-grub.patch | 320 ++++++++++++++++++
...tasn1-changes-for-grub-compatibility.patch | 135 ++++++++
...sn1-fix-the-potential-buffer-overrun.patch | 35 ++
4 files changed, 518 insertions(+)
create mode 100644 grub-core/lib/libtasn1-patches/0001-libtasn1-disable-code-not-needed-in-grub.patch
create mode 100644 grub-core/lib/libtasn1-patches/0002-libtasn1-changes-for-grub-compatibility.patch
create mode 100644 grub-core/lib/libtasn1-patches/0003-libtasn1-fix-the-potential-buffer-overrun.patch
diff --git a/docs/grub-dev.texi b/docs/grub-dev.texi
index 1276c5930..36bf77883 100644
--- a/docs/grub-dev.texi
+++ b/docs/grub-dev.texi
@@ -506,6 +506,7 @@ to update it.
* Gnulib::
* jsmn::
* minilzo::
+* libtasn1::
@end menu
@node Gnulib
@@ -596,6 +597,33 @@ cp minilzo-2.10/*.[hc] grub-core/lib/minilzo
rm -r minilzo-2.10*
@end example
+@node libtasn1
+@section libtasn1
+
+libtasn1 is a library providing Abstract Syntax Notation One (ASN.1, as
+specified by the X.680 ITU-T recommendation) parsing and structures management,
+and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding
+functions.
+
+To upgrade to a new version of the libtasn1 library, download the release
+tarball and copy the files into the target directory:
+
+@example
+curl -L -O https://ftp.gnu.org/gnu/libtasn1/libtasn1-4.19.0.tar.gz
+tar -zxf libtasn1-4.19.0.tar.gz
+rm -r grub-core/lib/libtasn1/
+mkdir libtasn1/lib
+mkdir -p grub-core/lib/libtasn1/lib/
+cp libtasn1-4.19.0/@lbracechar{}README.md,COPYING@rbracechar{} grub-core/lib/libtasn1/
+cp libtasn1-4.19.0/lib/@lbracechar{}coding.c,decoding.c,element.c,element.h,errors.c,gstr.c,gstr.h,int.h,parser_aux.c,parser_aux.h,structure.c,structure.h@rbracechar{} grub-core/lib/libtasn1/lib/
+cp libtasn1-4.19.0/lib/includes/libtasn1.h include/grub/
+rm -rf libtasn1-4.19.0
+@end example
+
+After upgrading the library, it is necessary to apply the patches in
+@file{grub-core/lib/libtasn1-patches/} to adjust the code to be compatible with
+grub.
+
@node Debugging
@chapter Debugging
diff --git a/grub-core/lib/libtasn1-patches/0001-libtasn1-disable-code-not-needed-in-grub.patch b/grub-core/lib/libtasn1-patches/0001-libtasn1-disable-code-not-needed-in-grub.patch
new file mode 100644
index 000000000..e3264409f
--- /dev/null
+++ b/grub-core/lib/libtasn1-patches/0001-libtasn1-disable-code-not-needed-in-grub.patch
@@ -0,0 +1,320 @@
+From 715f65934a120730316751536194ec5ed86aed9c Mon Sep 17 00:00:00 2001
+From: Daniel Axtens <dja@axtens.net>
+Date: Fri, 1 May 2020 17:12:23 +1000
+Subject: [PATCH 1/3] libtasn1: disable code not needed in grub
+
+We don't expect to be able to write ASN.1, only read it,
+so we can disable some code.
+
+Do that with #if 0/#endif, rather than deletion. This means
+that the difference between upstream and grub is smaller,
+which should make updating libtasn1 easier in the future.
+
+With these exclusions we also avoid the need for minmax.h,
+which is convenient because it means we don't have to
+import it from gnulib.
+
+Cc: Vladimir Serbinenko <phcoder@gmail.com>
+Signed-off-by: Daniel Axtens <dja@axtens.net>
+Signed-off-by: Gary Lin <glin@suse.com>
+---
+ grub-core/lib/libtasn1/lib/coding.c | 12 ++++++++++--
+ grub-core/lib/libtasn1/lib/decoding.c | 2 ++
+ grub-core/lib/libtasn1/lib/element.c | 6 +++---
+ grub-core/lib/libtasn1/lib/errors.c | 3 +++
+ grub-core/lib/libtasn1/lib/structure.c | 10 ++++++----
+ include/grub/libtasn1.h | 15 +++++++++++++++
+ 6 files changed, 39 insertions(+), 9 deletions(-)
+
+diff --git a/grub-core/lib/libtasn1/lib/coding.c b/grub-core/lib/libtasn1/lib/coding.c
+index ea5bc370e..5d03bca9d 100644
+--- a/grub-core/lib/libtasn1/lib/coding.c
++++ b/grub-core/lib/libtasn1/lib/coding.c
+@@ -30,11 +30,11 @@
+ #include "parser_aux.h"
+ #include <gstr.h>
+ #include "element.h"
+-#include "minmax.h"
+ #include <structure.h>
+
+ #define MAX_TAG_LEN 16
+
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /******************************************************/
+ /* Function : _asn1_error_description_value_not_found */
+ /* Description: creates the ErrorDescription string */
+@@ -58,6 +58,7 @@ _asn1_error_description_value_not_found (asn1_node node,
+ Estrcat (ErrorDescription, "' not found");
+
+ }
++#endif
+
+ /**
+ * asn1_length_der:
+@@ -244,6 +245,7 @@ asn1_encode_simple_der (unsigned int etype, const unsigned char *str,
+ return ASN1_SUCCESS;
+ }
+
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /******************************************************/
+ /* Function : _asn1_time_der */
+ /* Description: creates the DER coding for a TIME */
+@@ -278,7 +280,7 @@ _asn1_time_der (unsigned char *str, int str_len, unsigned char *der,
+
+ return ASN1_SUCCESS;
+ }
+-
++#endif
+
+ /*
+ void
+@@ -519,6 +521,7 @@ asn1_bit_der (const unsigned char *str, int bit_len,
+ }
+
+
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /******************************************************/
+ /* Function : _asn1_complete_explicit_tag */
+ /* Description: add the length coding to the EXPLICIT */
+@@ -595,6 +598,7 @@ _asn1_complete_explicit_tag (asn1_node node, unsigned char *der,
+
+ return ASN1_SUCCESS;
+ }
++#endif
+
+ const tag_and_class_st _asn1_tags[] = {
+ [ASN1_ETYPE_GENERALSTRING] =
+@@ -647,6 +651,8 @@ const tag_and_class_st _asn1_tags[] = {
+
+ unsigned int _asn1_tags_size = sizeof (_asn1_tags) / sizeof (_asn1_tags[0]);
+
++
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /******************************************************/
+ /* Function : _asn1_insert_tag_der */
+ /* Description: creates the DER coding of tags of one */
+@@ -1423,3 +1429,5 @@ error:
+ asn1_delete_structure (&node);
+ return err;
+ }
++
++#endif
+diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
+index b9245c486..bf9cb13ac 100644
+--- a/grub-core/lib/libtasn1/lib/decoding.c
++++ b/grub-core/lib/libtasn1/lib/decoding.c
+@@ -1620,6 +1620,7 @@ asn1_der_decoding (asn1_node * element, const void *ider, int ider_len,
+ return asn1_der_decoding2 (element, ider, &ider_len, 0, errorDescription);
+ }
+
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /**
+ * asn1_der_decoding_element:
+ * @structure: pointer to an ASN1 structure
+@@ -1650,6 +1651,7 @@ asn1_der_decoding_element (asn1_node * structure, const char *elementName,
+ {
+ return asn1_der_decoding (structure, ider, len, errorDescription);
+ }
++#endif
+
+ /**
+ * asn1_der_decoding_startEnd:
+diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
+index d4c558e10..bc4c3c8d7 100644
+--- a/grub-core/lib/libtasn1/lib/element.c
++++ b/grub-core/lib/libtasn1/lib/element.c
+@@ -118,7 +118,7 @@ _asn1_convert_integer (const unsigned char *value, unsigned char *value_out,
+ value_out[k2 - k] = val[k2];
+ }
+
+-#if 0
++#if 0 /* GRUB SKIPPED IMPORTING */
+ printf ("_asn1_convert_integer: valueIn=%s, lenOut=%d", value, *len);
+ for (k = 0; k < SIZEOF_UNSIGNED_LONG_INT; k++)
+ printf (", vOut[%d]=%d", k, value_out[k]);
+@@ -191,7 +191,7 @@ _asn1_append_sequence_set (asn1_node node, struct node_tail_cache_st *pcache)
+ return ASN1_SUCCESS;
+ }
+
+-
++#if 0
+ /**
+ * asn1_write_value:
+ * @node_root: pointer to a structure
+@@ -646,7 +646,7 @@ asn1_write_value (asn1_node node_root, const char *name,
+
+ return ASN1_SUCCESS;
+ }
+-
++#endif
+
+ #define PUT_VALUE( ptr, ptr_size, data, data_size) \
+ *len = data_size; \
+diff --git a/grub-core/lib/libtasn1/lib/errors.c b/grub-core/lib/libtasn1/lib/errors.c
+index aef5dfe6f..2b2322152 100644
+--- a/grub-core/lib/libtasn1/lib/errors.c
++++ b/grub-core/lib/libtasn1/lib/errors.c
+@@ -57,6 +57,8 @@ static const libtasn1_error_entry error_algorithms[] = {
+ {0, 0}
+ };
+
++
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /**
+ * asn1_perror:
+ * @error: is an error returned by a libtasn1 function.
+@@ -73,6 +75,7 @@ asn1_perror (int error)
+ const char *str = asn1_strerror (error);
+ fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");
+ }
++#endif
+
+ /**
+ * asn1_strerror:
+diff --git a/grub-core/lib/libtasn1/lib/structure.c b/grub-core/lib/libtasn1/lib/structure.c
+index 512dd601f..f5a947d57 100644
+--- a/grub-core/lib/libtasn1/lib/structure.c
++++ b/grub-core/lib/libtasn1/lib/structure.c
+@@ -76,7 +76,7 @@ _asn1_find_left (asn1_node_const node)
+ return node->left;
+ }
+
+-
++#if 0 /* GRUB SKIPPED IMPORTING */
+ int
+ _asn1_create_static_structure (asn1_node_const pointer,
+ char *output_file_name, char *vector_name)
+@@ -155,7 +155,7 @@ _asn1_create_static_structure (asn1_node_const pointer,
+
+ return ASN1_SUCCESS;
+ }
+-
++#endif
+
+ /**
+ * asn1_array2tree:
+@@ -721,7 +721,7 @@ asn1_create_element (asn1_node_const definitions, const char *source_name,
+ return res;
+ }
+
+-
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /**
+ * asn1_print_structure:
+ * @out: pointer to the output file (e.g. stdout).
+@@ -1062,7 +1062,7 @@ asn1_print_structure (FILE * out, asn1_node_const structure, const char *name,
+ }
+ }
+ }
+-
++#endif
+
+
+ /**
+@@ -1158,6 +1158,7 @@ asn1_find_structure_from_oid (asn1_node_const definitions,
+ return NULL; /* ASN1_ELEMENT_NOT_FOUND; */
+ }
+
++#if 0 /* GRUB SKIPPED IMPORTING */
+ /**
+ * asn1_copy_node:
+ * @dst: Destination asn1 node.
+@@ -1207,6 +1208,7 @@ asn1_copy_node (asn1_node dst, const char *dst_name,
+
+ return result;
+ }
++#endif
+
+ /**
+ * asn1_dup_node:
+diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
+index 51cc7879f..058ab27b0 100644
+--- a/include/grub/libtasn1.h
++++ b/include/grub/libtasn1.h
+@@ -318,6 +318,8 @@ extern "C"
+ /* Functions definitions */
+ /***********************************/
+
++/* These functions are not used in grub and should not be referenced. */
++# if 0 /* GRUB SKIPPED IMPORTING */
+ extern ASN1_API int
+ asn1_parser2tree (const char *file,
+ asn1_node * definitions, char *error_desc);
+@@ -326,14 +328,17 @@ extern "C"
+ asn1_parser2array (const char *inputFileName,
+ const char *outputFileName,
+ const char *vectorName, char *error_desc);
++# endif
+
+ extern ASN1_API int
+ asn1_array2tree (const asn1_static_node * array,
+ asn1_node * definitions, char *errorDescription);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ extern ASN1_API void
+ asn1_print_structure (FILE * out, asn1_node_const structure,
+ const char *name, int mode);
++# endif
+
+ extern ASN1_API int
+ asn1_create_element (asn1_node_const definitions,
+@@ -347,9 +352,11 @@ extern "C"
+ extern ASN1_API int
+ asn1_delete_element (asn1_node structure, const char *element_name);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ extern ASN1_API int
+ asn1_write_value (asn1_node node_root, const char *name,
+ const void *ivalue, int len);
++# endif
+
+ extern ASN1_API int
+ asn1_read_value (asn1_node_const root, const char *name,
+@@ -366,9 +373,11 @@ extern "C"
+ asn1_number_of_elements (asn1_node_const element, const char *name,
+ int *num);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ extern ASN1_API int
+ asn1_der_coding (asn1_node_const element, const char *name,
+ void *ider, int *len, char *ErrorDescription);
++# endif
+
+ extern ASN1_API int
+ asn1_der_decoding2 (asn1_node * element, const void *ider,
+@@ -379,6 +388,7 @@ extern "C"
+ asn1_der_decoding (asn1_node * element, const void *ider,
+ int ider_len, char *errorDescription);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ /* Do not use. Use asn1_der_decoding() instead. */
+ extern ASN1_API int
+ asn1_der_decoding_element (asn1_node * structure,
+@@ -386,6 +396,7 @@ extern "C"
+ const void *ider, int len,
+ char *errorDescription)
+ _ASN1_GCC_ATTR_DEPRECATED;
++# endif
+
+ extern ASN1_API int
+ asn1_der_decoding_startEnd (asn1_node element,
+@@ -411,12 +422,16 @@ extern "C"
+ const char
+ *oidValue);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ __LIBTASN1_PURE__
+ extern ASN1_API const char *asn1_check_version (const char *req_version);
++# endif
+
+ __LIBTASN1_PURE__ extern ASN1_API const char *asn1_strerror (int error);
+
++# if 0 /* GRUB SKIPPED IMPORTING */
+ extern ASN1_API void asn1_perror (int error);
++# endif
+
+ # define ASN1_MAX_TAG_SIZE 4
+ # define ASN1_MAX_LENGTH_SIZE 9
+--
+2.35.3
+
diff --git a/grub-core/lib/libtasn1-patches/0002-libtasn1-changes-for-grub-compatibility.patch b/grub-core/lib/libtasn1-patches/0002-libtasn1-changes-for-grub-compatibility.patch
new file mode 100644
index 000000000..5ab885e91
--- /dev/null
+++ b/grub-core/lib/libtasn1-patches/0002-libtasn1-changes-for-grub-compatibility.patch
@@ -0,0 +1,135 @@
+From d13793c210999b256b46970b5f76d41a57e5c8fc Mon Sep 17 00:00:00 2001
+From: Daniel Axtens <dja@axtens.net>
+Date: Fri, 1 May 2020 20:44:29 +1000
+Subject: [PATCH 2/3] libtasn1: changes for grub compatibility
+
+Do a few things to make libtasn1 compile as part of grub:
+
+ - remove _asn1_strcat and replace strcat with the bound-checked
+ _asn1_str_cat except the one inside _asn1_str_cat. That strcat is
+ replaced with strcpy.
+
+ - adjust header paths in libtasn1.h
+
+ - adjust header paths to "grub/libtasn1.h".
+
+ - replace a 64 bit division with a call to grub_divmod64, preventing
+ creation of __udivdi3 calls on 32 bit platforms.
+
+Cc: Vladimir Serbinenko <phcoder@gmail.com>
+Signed-off-by: Daniel Axtens <dja@axtens.net>
+Signed-off-by: Gary Lin <glin@suse.com>
+---
+ grub-core/lib/libtasn1/lib/decoding.c | 8 ++++----
+ grub-core/lib/libtasn1/lib/element.c | 2 +-
+ grub-core/lib/libtasn1/lib/gstr.c | 2 +-
+ grub-core/lib/libtasn1/lib/int.h | 3 +--
+ grub-core/lib/libtasn1/lib/parser_aux.c | 2 +-
+ include/grub/libtasn1.h | 5 ++---
+ 6 files changed, 10 insertions(+), 12 deletions(-)
+
+diff --git a/grub-core/lib/libtasn1/lib/decoding.c b/grub-core/lib/libtasn1/lib/decoding.c
+index bf9cb13ac..51859fe36 100644
+--- a/grub-core/lib/libtasn1/lib/decoding.c
++++ b/grub-core/lib/libtasn1/lib/decoding.c
+@@ -2016,8 +2016,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
+ (p2->type & CONST_ASSIGN))
+ {
+ strcpy (name, definitions->name);
+- strcat (name, ".");
+- strcat (name, p2->name);
++ _asn1_str_cat (name, sizeof (name), ".");
++ _asn1_str_cat (name, sizeof (name), p2->name);
+
+ len = sizeof (value);
+ result = asn1_read_value (definitions, name, value, &len);
+@@ -2034,8 +2034,8 @@ asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element,
+ if (p2)
+ {
+ strcpy (name, definitions->name);
+- strcat (name, ".");
+- strcat (name, p2->name);
++ _asn1_str_cat (name, sizeof (name), ".");
++ _asn1_str_cat (name, sizeof (name), p2->name);
+
+ result = asn1_create_element (definitions, name, &aux);
+ if (result == ASN1_SUCCESS)
+diff --git a/grub-core/lib/libtasn1/lib/element.c b/grub-core/lib/libtasn1/lib/element.c
+index bc4c3c8d7..8694fecb9 100644
+--- a/grub-core/lib/libtasn1/lib/element.c
++++ b/grub-core/lib/libtasn1/lib/element.c
+@@ -688,7 +688,7 @@ asn1_write_value (asn1_node node_root, const char *name,
+ return ASN1_MEM_ERROR; \
+ } else { \
+ /* this strcat is checked */ \
+- if (ptr) _asn1_strcat (ptr, data); \
++ if (ptr) _asn1_str_cat ((char *)ptr, ptr_size, (const char *)data); \
+ }
+
+ /**
+diff --git a/grub-core/lib/libtasn1/lib/gstr.c b/grub-core/lib/libtasn1/lib/gstr.c
+index eef419554..a9c16f5d3 100644
+--- a/grub-core/lib/libtasn1/lib/gstr.c
++++ b/grub-core/lib/libtasn1/lib/gstr.c
+@@ -36,7 +36,7 @@ _asn1_str_cat (char *dest, size_t dest_tot_size, const char *src)
+
+ if (dest_tot_size - dest_size > str_size)
+ {
+- strcat (dest, src);
++ strcpy (dest + dest_size, src);
+ }
+ else
+ {
+diff --git a/grub-core/lib/libtasn1/lib/int.h b/grub-core/lib/libtasn1/lib/int.h
+index d94d51c8c..7409c7655 100644
+--- a/grub-core/lib/libtasn1/lib/int.h
++++ b/grub-core/lib/libtasn1/lib/int.h
+@@ -35,7 +35,7 @@
+ # include <sys/types.h>
+ # endif
+
+-# include <libtasn1.h>
++# include "grub/libtasn1.h"
+
+ # define ASN1_SMALL_VALUE_SIZE 16
+
+@@ -115,7 +115,6 @@ extern const tag_and_class_st _asn1_tags[];
+ # define _asn1_strtoul(n,e,b) strtoul((const char *) n, e, b)
+ # define _asn1_strcmp(a,b) strcmp((const char *)a, (const char *)b)
+ # define _asn1_strcpy(a,b) strcpy((char *)a, (const char *)b)
+-# define _asn1_strcat(a,b) strcat((char *)a, (const char *)b)
+
+ # if SIZEOF_UNSIGNED_LONG_INT == 8
+ # define _asn1_strtou64(n,e,b) strtoul((const char *) n, e, b)
+diff --git a/grub-core/lib/libtasn1/lib/parser_aux.c b/grub-core/lib/libtasn1/lib/parser_aux.c
+index c05bd2339..e4e4c0556 100644
+--- a/grub-core/lib/libtasn1/lib/parser_aux.c
++++ b/grub-core/lib/libtasn1/lib/parser_aux.c
+@@ -632,7 +632,7 @@ _asn1_ltostr (int64_t v, char str[LTOSTR_MAX_SIZE])
+ count = 0;
+ do
+ {
+- d = val / 10;
++ d = grub_divmod64(val, 10, NULL);
+ r = val - d * 10;
+ temp[start + count] = '0' + (char) r;
+ count++;
+diff --git a/include/grub/libtasn1.h b/include/grub/libtasn1.h
+index 058ab27b0..7d64b6ab7 100644
+--- a/include/grub/libtasn1.h
++++ b/include/grub/libtasn1.h
+@@ -54,9 +54,8 @@
+ # define __LIBTASN1_PURE__
+ # endif
+
+-# include <sys/types.h>
+-# include <time.h>
+-# include <stdio.h> /* for FILE* */
++# include <grub/types.h>
++# include <grub/time.h>
+
+ # ifdef __cplusplus
+ extern "C"
+--
+2.35.3
+
diff --git a/grub-core/lib/libtasn1-patches/0003-libtasn1-fix-the-potential-buffer-overrun.patch b/grub-core/lib/libtasn1-patches/0003-libtasn1-fix-the-potential-buffer-overrun.patch
new file mode 100644
index 000000000..2c4f4d394
--- /dev/null
+++ b/grub-core/lib/libtasn1-patches/0003-libtasn1-fix-the-potential-buffer-overrun.patch
@@ -0,0 +1,35 @@
+From 8f7c3c3b28a312f77499159c52f313487fba0d08 Mon Sep 17 00:00:00 2001
+From: Gary Lin <glin@suse.com>
+Date: Mon, 8 Apr 2024 14:57:21 +0800
+Subject: [PATCH 3/3] libtasn1: fix the potential buffer overrun
+
+In _asn1_tag_der(), the first while loop for the long form may end up
+with a 'k' value with 'ASN1_MAX_TAG_SIZE' and cause the buffer overrun
+in the second while loop. This commit tweaks the conditional check to
+avoid producing a too large 'k'.
+
+This is a quick fix and may differ from the official upstream fix.
+
+libtasn1 issue: https://gitlab.com/gnutls/libtasn1/-/issues/49
+
+Signed-off-by: Gary Lin <glin@suse.com>
+---
+ grub-core/lib/libtasn1/lib/coding.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/grub-core/lib/libtasn1/lib/coding.c b/grub-core/lib/libtasn1/lib/coding.c
+index 5d03bca9d..0458829a5 100644
+--- a/grub-core/lib/libtasn1/lib/coding.c
++++ b/grub-core/lib/libtasn1/lib/coding.c
+@@ -143,7 +143,7 @@ _asn1_tag_der (unsigned char class, unsigned int tag_value,
+ temp[k++] = tag_value & 0x7F;
+ tag_value >>= 7;
+
+- if (k > ASN1_MAX_TAG_SIZE - 1)
++ if (k >= ASN1_MAX_TAG_SIZE - 1)
+ break; /* will not encode larger tags */
+ }
+ *ans_len = k + 1;
+--
+2.35.3
+
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 09/20] key_protector: Add key protectors framework
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (7 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 08/20] libtasn1: Add the documentation Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS) Gary Lin via Grub-devel
` (10 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Vladimir Serbinenko
From: Hernan Gatta <hegatta@linux.microsoft.com>
A key protector encapsulates functionality to retrieve an unlocking key
for a fully-encrypted disk from a specific source. A key protector
module registers itself with the key protectors framework when it is
loaded and unregisters when unloaded. Additionally, a key protector may
accept parameters that describe how it should operate.
The key protectors framework, besides offering registration and
unregistration functions, also offers a one-stop routine for finding and
invoking a key protector by name. If a key protector with the specified
name exists and if an unlocking key is successfully retrieved by it, the
function returns to the caller the retrieved key and its length.
Cc: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
grub-core/Makefile.am | 1 +
grub-core/Makefile.core.def | 5 +++
grub-core/disk/key_protector.c | 78 ++++++++++++++++++++++++++++++++++
include/grub/key_protector.h | 46 ++++++++++++++++++++
4 files changed, 130 insertions(+)
create mode 100644 grub-core/disk/key_protector.c
create mode 100644 include/grub/key_protector.h
diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index f18550c1c..9d3d5f519 100644
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -90,6 +90,7 @@ endif
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/mm.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/parser.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/partition.h
+KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/key_protector.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/stack_protector.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/term.h
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/time.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 8cecb9183..fe58ec740 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -1282,6 +1282,11 @@ module = {
common = disk/raid6_recover.c;
};
+module = {
+ name = key_protector;
+ common = disk/key_protector.c;
+};
+
module = {
name = scsi;
common = disk/scsi.c;
diff --git a/grub-core/disk/key_protector.c b/grub-core/disk/key_protector.c
new file mode 100644
index 000000000..b84afe1c7
--- /dev/null
+++ b/grub-core/disk/key_protector.c
@@ -0,0 +1,78 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/list.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/key_protector.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+struct grub_key_protector *grub_key_protectors = NULL;
+
+grub_err_t
+grub_key_protector_register (struct grub_key_protector *protector)
+{
+ if (protector == NULL || protector->name == NULL || grub_strlen (protector->name) == 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ if (grub_key_protectors &&
+ grub_named_list_find (GRUB_AS_NAMED_LIST (grub_key_protectors),
+ protector->name))
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ grub_list_push (GRUB_AS_LIST_P (&grub_key_protectors),
+ GRUB_AS_LIST (protector));
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_key_protector_unregister (struct grub_key_protector *protector)
+{
+ if (protector == NULL)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ grub_list_remove (GRUB_AS_LIST (protector));
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_key_protector_recover_key (const char *protector, grub_uint8_t **key,
+ grub_size_t *key_size)
+{
+ struct grub_key_protector *kp = NULL;
+
+ if (grub_key_protectors == NULL)
+ return GRUB_ERR_OUT_OF_RANGE;
+
+ if (protector == NULL || grub_strlen (protector) == 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ kp = grub_named_list_find (GRUB_AS_NAMED_LIST (grub_key_protectors),
+ protector);
+ if (kp == NULL)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("A key protector with name '%s' could not be found. "
+ "Is the name spelled correctly and is the "
+ "corresponding module loaded?"), protector);
+
+ return kp->recover_key (key, key_size);
+}
diff --git a/include/grub/key_protector.h b/include/grub/key_protector.h
new file mode 100644
index 000000000..6e6a6fb24
--- /dev/null
+++ b/include/grub/key_protector.h
@@ -0,0 +1,46 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_PROTECTOR_HEADER
+#define GRUB_PROTECTOR_HEADER 1
+
+#include <grub/err.h>
+#include <grub/types.h>
+
+struct grub_key_protector
+{
+ struct grub_key_protector *next;
+ struct grub_key_protector **prev;
+
+ const char *name;
+
+ grub_err_t (*recover_key) (grub_uint8_t **key, grub_size_t *key_size);
+};
+
+grub_err_t
+grub_key_protector_register (struct grub_key_protector *protector);
+
+grub_err_t
+grub_key_protector_unregister (struct grub_key_protector *protector);
+
+grub_err_t
+grub_key_protector_recover_key (const char *protector,
+ grub_uint8_t **key,
+ grub_size_t *key_size);
+
+#endif /* ! GRUB_PROTECTOR_HEADER */
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS)
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (8 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 09/20] key_protector: Add key protectors framework Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 16:35 ` Stefan Berger
2024-04-19 8:30 ` [PATCH v12 11/20] key_protector: Add TPM2 Key Protector Gary Lin via Grub-devel
` (9 subsequent siblings)
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Hernan Gatta <hegatta@linux.microsoft.com>
A Trusted Platform Module (TPM) Software Stack (TSS) provides logic to
compose and submit TPM commands and parse reponses.
A limited number of TPM commands may be accessed via the EFI TCG2
protocol. This protocol exposes functionality that is primarily geared
toward TPM usage within the context of Secure Boot. For all other TPM
commands, however, such as sealing and unsealing, this protocol does not
provide any help, with the exception of passthrough command submission.
The SubmitCommand method allows a caller to send raw commands to the
system's TPM and to receive the corresponding response. These
command/response pairs are formatted using the TPM wire protocol. To
construct commands in this way, and to parse the TPM's response, it is
necessary to, first, possess knowledge of the various TPM structures, and,
second, of the TPM wire protocol itself.
As such, this patch includes a set of header files that define the
necessary TPM structures and TSS functions, implementations of various
TPM2_* functions (inventoried below), and logic to write and read command
and response buffers, respectively, using the TPM wire protocol.
Functions: TPM2_Create, TPM2_CreatePrimary, TPM2_EvictControl,
TPM2_FlushContext, TPM2_Load, TPM2_PCR_Read, TPM2_PolicyGetDigest,
TPM2_PolicyPCR, TPM2_ReadPublic, TPM2_StartAuthSession, TPM2_Unseal,
TPM2_LoadExternal, TPM2_Hash, TPM2_VerifySignature,
TPM2_PolicyAuthorize, TPM2_TestParms
Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/tpm2/buffer.c | 145 +++
grub-core/tpm2/mu.c | 1168 ++++++++++++++++++++++++
grub-core/tpm2/tcg2.c | 143 +++
grub-core/tpm2/tpm2.c | 1048 +++++++++++++++++++++
include/grub/tpm2/buffer.h | 65 ++
include/grub/tpm2/internal/functions.h | 156 ++++
include/grub/tpm2/internal/structs.h | 768 ++++++++++++++++
include/grub/tpm2/internal/types.h | 403 ++++++++
include/grub/tpm2/mu.h | 396 ++++++++
include/grub/tpm2/tcg2.h | 34 +
include/grub/tpm2/tpm2.h | 34 +
11 files changed, 4360 insertions(+)
create mode 100644 grub-core/tpm2/buffer.c
create mode 100644 grub-core/tpm2/mu.c
create mode 100644 grub-core/tpm2/tcg2.c
create mode 100644 grub-core/tpm2/tpm2.c
create mode 100644 include/grub/tpm2/buffer.h
create mode 100644 include/grub/tpm2/internal/functions.h
create mode 100644 include/grub/tpm2/internal/structs.h
create mode 100644 include/grub/tpm2/internal/types.h
create mode 100644 include/grub/tpm2/mu.h
create mode 100644 include/grub/tpm2/tcg2.h
create mode 100644 include/grub/tpm2/tpm2.h
diff --git a/grub-core/tpm2/buffer.c b/grub-core/tpm2/buffer.c
new file mode 100644
index 000000000..cb9f29497
--- /dev/null
+++ b/grub-core/tpm2/buffer.c
@@ -0,0 +1,145 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+#include <grub/tpm2/buffer.h>
+
+void grub_tpm2_buffer_init (grub_tpm2_buffer_t buffer)
+{
+ grub_memset (buffer->data, 0xDD, sizeof (buffer->data));
+ buffer->size = 0;
+ buffer->offset = 0;
+ buffer->cap = sizeof (buffer->data);
+ buffer->error = 0;
+}
+
+void
+grub_tpm2_buffer_pack (grub_tpm2_buffer_t buffer, const void* data,
+ grub_size_t size)
+{
+ grub_uint32_t r = buffer->cap - buffer->size;
+
+ if (buffer->error)
+ return;
+
+ if (size > r)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_memcpy (&buffer->data[buffer->size], (void*) data, size);
+ buffer->size += size;
+}
+
+void
+grub_tpm2_buffer_pack_u8 (grub_tpm2_buffer_t buffer, grub_uint8_t value)
+{
+ grub_tpm2_buffer_pack (buffer, (const char*) &value, sizeof (value));
+}
+
+void
+grub_tpm2_buffer_pack_u16 (grub_tpm2_buffer_t buffer, grub_uint16_t value)
+{
+ grub_uint16_t tmp = grub_cpu_to_be16 (value);
+ grub_tpm2_buffer_pack (buffer, (const char*) &tmp, sizeof (tmp));
+}
+
+void
+grub_tpm2_buffer_pack_u32 (grub_tpm2_buffer_t buffer, grub_uint32_t value)
+{
+ grub_uint32_t tmp = grub_cpu_to_be32 (value);
+ grub_tpm2_buffer_pack (buffer, (const char*) &tmp, sizeof (tmp));
+}
+
+void
+grub_tpm2_buffer_unpack (grub_tpm2_buffer_t buffer, void* data,
+ grub_size_t size)
+{
+ grub_uint32_t r = buffer->size - buffer->offset;
+
+ if (buffer->error)
+ return;
+
+ if (size > r)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_memcpy (data, &buffer->data[buffer->offset], size);
+ buffer->offset += size;
+}
+
+void
+grub_tpm2_buffer_unpack_u8 (grub_tpm2_buffer_t buffer, grub_uint8_t* value)
+{
+ grub_uint32_t r = buffer->size - buffer->offset;
+
+ if (buffer->error)
+ return;
+
+ if (sizeof (*value) > r)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_memcpy (value, &buffer->data[buffer->offset], sizeof (*value));
+ buffer->offset += sizeof (*value);
+}
+
+void
+grub_tpm2_buffer_unpack_u16 (grub_tpm2_buffer_t buffer, grub_uint16_t* value)
+{
+ grub_uint16_t tmp;
+ grub_uint32_t r = buffer->size - buffer->offset;
+
+ if (buffer->error)
+ return;
+
+ if (sizeof (tmp) > r)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_memcpy (&tmp, &buffer->data[buffer->offset], sizeof (tmp));
+ buffer->offset += sizeof (tmp);
+ *value = grub_be_to_cpu16 (tmp);
+}
+
+void
+grub_tpm2_buffer_unpack_u32 (grub_tpm2_buffer_t buffer, grub_uint32_t* value)
+{
+ grub_uint32_t tmp;
+ grub_uint32_t r = buffer->size - buffer->offset;
+
+ if (buffer->error)
+ return;
+
+ if (sizeof (tmp) > r)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_memcpy (&tmp, &buffer->data[buffer->offset], sizeof (tmp));
+ buffer->offset += sizeof (tmp);
+ *value = grub_be_to_cpu32 (tmp);
+}
diff --git a/grub-core/tpm2/mu.c b/grub-core/tpm2/mu.c
new file mode 100644
index 000000000..10ed71c04
--- /dev/null
+++ b/grub-core/tpm2/mu.c
@@ -0,0 +1,1168 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+#include <grub/tpm2/mu.h>
+
+void
+grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_AUTH_COMMAND* authCommand)
+{
+ grub_uint32_t start;
+ grub_uint32_t tmp;
+
+ grub_tpm2_buffer_pack_u32 (buffer, 0);
+ start = buffer->size;
+
+ grub_tpm2_buffer_pack_u32 (buffer, authCommand->sessionHandle);
+
+ grub_tpm2_buffer_pack_u16 (buffer, authCommand->nonce.size);
+ grub_tpm2_buffer_pack (buffer, authCommand->nonce.buffer,
+ authCommand->nonce.size);
+
+ grub_tpm2_buffer_pack_u8 (buffer,
+ *((const grub_uint8_t*) &authCommand->sessionAttributes));
+
+ grub_tpm2_buffer_pack_u16 (buffer, authCommand->hmac.size);
+ grub_tpm2_buffer_pack (buffer, authCommand->hmac.buffer,
+ authCommand->hmac.size);
+
+ tmp = grub_cpu_to_be32 (buffer->size - start);
+ grub_memcpy (&buffer->data[start - sizeof (grub_uint32_t)], &tmp,
+ sizeof (tmp));
+}
+
+void
+grub_tpm2_mu_TPM2B_Marshal (grub_tpm2_buffer_t buffer,
+ const grub_uint16_t size,
+ const grub_uint8_t* b)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, size);
+
+ for (grub_uint16_t i = 0; i < size; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, b[i]);
+}
+
+void
+grub_tpm2_mu_TPMU_SYM_KEY_BITS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SYM_OBJECT algorithm,
+ const TPMU_SYM_KEY_BITS *p)
+{
+ switch (algorithm)
+ {
+ case TPM_ALG_AES:
+ case TPM_ALG_SM4:
+ case TPM_ALG_CAMELLIA:
+ case TPM_ALG_XOR:
+ grub_tpm2_buffer_pack_u16 (buffer, *((const grub_uint16_t*) p));
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMU_SYM_MODE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SYM_OBJECT algorithm,
+ const TPMU_SYM_MODE *p)
+{
+ switch (algorithm)
+ {
+ case TPM_ALG_AES:
+ case TPM_ALG_SM4:
+ case TPM_ALG_CAMELLIA:
+ grub_tpm2_buffer_pack_u16 (buffer, *((const grub_uint16_t*) p));
+ break;
+ case TPM_ALG_XOR:
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SYM_DEF *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->algorithm);
+ grub_tpm2_mu_TPMU_SYM_KEY_BITS_Marshal (buffer, p->algorithm, &p->keyBits);
+ grub_tpm2_mu_TPMU_SYM_MODE_Marshal (buffer, p->algorithm, &p->mode);
+}
+
+void
+grub_tpm2_mu_TPMS_PCR_SELECTION_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_PCR_SELECTION* pcrSelection)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, pcrSelection->hash);
+ grub_tpm2_buffer_pack_u8 (buffer, pcrSelection->sizeOfSelect);
+
+ for (grub_uint32_t i = 0; i < pcrSelection->sizeOfSelect; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, pcrSelection->pcrSelect[i]);
+}
+
+void
+grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (grub_tpm2_buffer_t buffer,
+ const TPML_PCR_SELECTION* pcrSelection)
+{
+ grub_tpm2_buffer_pack_u32 (buffer, pcrSelection->count);
+
+ for (grub_uint32_t i = 0; i < pcrSelection->count; i++)
+ grub_tpm2_mu_TPMS_PCR_SELECTION_Marshal (buffer,
+ &pcrSelection->pcrSelections[i]);
+}
+
+void
+grub_tpm2_mu_TPMA_OBJECT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMA_OBJECT *p)
+{
+ grub_tpm2_buffer_pack_u32 (buffer, *((const grub_uint32_t*) p));
+}
+
+void
+grub_tpm2_mu_TPMS_SCHEME_XOR_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SCHEME_XOR *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->hashAlg);
+ grub_tpm2_buffer_pack_u16 (buffer, p->kdf);
+}
+
+void
+grub_tpm2_mu_TPMS_SCHEME_HMAC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SCHEME_HMAC *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->hashAlg);
+}
+
+void
+grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_KEYEDHASH_SCHEME scheme,
+ const TPMU_SCHEME_KEYEDHASH *p)
+{
+ switch (scheme)
+ {
+ case TPM_ALG_HMAC:
+ grub_tpm2_mu_TPMS_SCHEME_HMAC_Marshal (buffer, &p->hmac);
+ break;
+ case TPM_ALG_XOR:
+ grub_tpm2_mu_TPMS_SCHEME_XOR_Marshal (buffer, &p->exclusiveOr);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_KEYEDHASH_SCHEME *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->scheme);
+ grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Marshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_KEYEDHASH_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Marshal (buffer, &p->scheme);
+}
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SYM_DEF_OBJECT *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->algorithm);
+ grub_tpm2_mu_TPMU_SYM_KEY_BITS_Marshal (buffer, p->algorithm, &p->keyBits);
+ grub_tpm2_mu_TPMU_SYM_MODE_Marshal (buffer, p->algorithm, &p->mode);
+}
+
+void
+grub_tpm2_mu_TPMU_ASYM_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_RSA_DECRYPT scheme,
+ const TPMU_ASYM_SCHEME *p __attribute__ ((unused)))
+{
+ switch (scheme)
+ {
+ case TPM_ALG_NULL:
+ break;
+ default:
+ /* Unsupported */
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_RSA_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_RSA_SCHEME *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->scheme);
+ grub_tpm2_mu_TPMU_ASYM_SCHEME_Marshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_RSA_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_RSA_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Marshal (buffer, &p->symmetric);
+ grub_tpm2_mu_TPMT_RSA_SCHEME_Marshal (buffer, &p->scheme);
+ grub_tpm2_buffer_pack_u16 (buffer, p->keyBits);
+ grub_tpm2_buffer_pack_u32 (buffer, p->exponent);
+}
+
+void
+grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SYMCIPHER_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Marshal (buffer, &p->sym);
+}
+
+void
+grub_tpm2_mu_TPMT_ECC_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_ECC_SCHEME *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->scheme);
+ grub_tpm2_mu_TPMU_ASYM_SCHEME_Marshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMU_KDF_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_KDF scheme,
+ const TPMU_KDF_SCHEME *p)
+{
+ switch (scheme)
+ {
+ case TPM_ALG_MGF1:
+ grub_tpm2_buffer_pack_u16 (buffer, p->mgf1.hashAlg);
+ break;
+ case TPM_ALG_KDF1_SP800_56A:
+ grub_tpm2_buffer_pack_u16 (buffer, p->kdf1_sp800_56a.hashAlg);
+ break;
+ case TPM_ALG_KDF2:
+ grub_tpm2_buffer_pack_u16 (buffer, p->kdf2.hashAlg);
+ break;
+ case TPM_ALG_KDF1_SP800_108:
+ grub_tpm2_buffer_pack_u16 (buffer, p->kdf1_sp800_108.hashAlg);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_KDF_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_KDF_SCHEME *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->scheme);
+ grub_tpm2_mu_TPMU_KDF_SCHEME_Marshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_ECC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_ECC_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Marshal (buffer, &p->symmetric);
+ grub_tpm2_mu_TPMT_ECC_SCHEME_Marshal (buffer, &p->scheme);
+ grub_tpm2_buffer_pack_u16 (buffer, p->curveID);
+ grub_tpm2_mu_TPMT_KDF_SCHEME_Marshal (buffer, &p->kdf);
+}
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const grub_uint32_t type,
+ const TPMU_PUBLIC_PARMS *p)
+{
+ switch (type)
+ {
+ case TPM_ALG_KEYEDHASH:
+ grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Marshal (buffer, &p->keyedHashDetail);
+ break;
+ case TPM_ALG_SYMCIPHER:
+ grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Marshal (buffer, &p->symDetail);
+ break;
+ case TPM_ALG_RSA:
+ grub_tpm2_mu_TPMS_RSA_PARMS_Marshal (buffer, &p->rsaDetail);
+ break;
+ case TPM_ALG_ECC:
+ grub_tpm2_mu_TPMS_ECC_PARMS_Marshal (buffer, &p->eccDetail);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMS_ECC_POINT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_ECC_POINT *p)
+{
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->x.size, p->x.buffer);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->y.size, p->y.buffer);
+}
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_ID_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_PUBLIC type,
+ const TPMU_PUBLIC_ID *p)
+{
+ switch(type)
+ {
+ case TPM_ALG_KEYEDHASH:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->keyedHash.size,
+ p->keyedHash.buffer);
+ break;
+ case TPM_ALG_SYMCIPHER:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->sym.size, p->sym.buffer);
+ break;
+ case TPM_ALG_RSA:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->rsa.size, p->rsa.buffer);
+ break;
+ case TPM_ALG_ECC:
+ grub_tpm2_mu_TPMS_ECC_POINT_Marshal (buffer, &p->ecc);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_PUBLIC_PARMS *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->type);
+ grub_tpm2_mu_TPMU_PUBLIC_PARMS_Marshal (buffer, p->type, &p->parameters);
+}
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_PUBLIC *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->type);
+ grub_tpm2_buffer_pack_u16 (buffer, p->nameAlg);
+ grub_tpm2_mu_TPMA_OBJECT_Marshal (buffer, &p->objectAttributes);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->authPolicy.size, p->authPolicy.buffer);
+ grub_tpm2_mu_TPMU_PUBLIC_PARMS_Marshal (buffer, p->type, &p->parameters);
+ grub_tpm2_mu_TPMU_PUBLIC_ID_Marshal (buffer, p->type, &p->unique);
+}
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_PUBLIC *p)
+{
+ grub_uint32_t start;
+ grub_uint16_t size;
+
+ if (p)
+ {
+ grub_tpm2_buffer_pack_u16 (buffer, p->size);
+
+ start = buffer->size;
+ grub_tpm2_mu_TPMT_PUBLIC_Marshal (buffer, &p->publicArea);
+ size = grub_cpu_to_be16 (buffer->size - start);
+ grub_memcpy (&buffer->data[start - sizeof (grub_uint16_t)], &size,
+ sizeof (size));
+ }
+ else
+ grub_tpm2_buffer_pack_u16 (buffer, 0);
+}
+
+void
+grub_tpm2_mu_TPMS_SENSITIVE_CREATE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SENSITIVE_CREATE *p)
+{
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->userAuth.size, p->userAuth.buffer);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->data.size, p->data.buffer);
+}
+
+void
+grub_tpm2_mu_TPMU_SENSITIVE_COMPOSITE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_PUBLIC type,
+ const TPMU_SENSITIVE_COMPOSITE *p)
+{
+ switch(type)
+ {
+ case TPM_ALG_RSA:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->rsa.size, p->rsa.buffer);
+ break;
+ case TPM_ALG_ECC:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->ecc.size, p->ecc.buffer);
+ break;
+ case TPM_ALG_KEYEDHASH:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->bits.size, p->bits.buffer);
+ break;
+ case TPM_ALG_SYMCIPHER:
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->sym.size, p->sym.buffer);
+ break;
+ default:
+ buffer->error = 1;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_SENSITIVE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SENSITIVE *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->sensitiveType);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->authValue.size, p->authValue.buffer);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->seedValue.size, p->seedValue.buffer);
+ grub_tpm2_mu_TPMU_SENSITIVE_COMPOSITE_Marshal (buffer, p->sensitiveType,
+ &p->sensitive);
+}
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_SENSITIVE *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->size);
+ grub_tpm2_mu_TPMT_SENSITIVE_Marshal (buffer, &p->sensitiveArea);
+}
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_CREATE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_SENSITIVE_CREATE *sensitiveCreate)
+{
+ grub_uint32_t start;
+ grub_uint16_t size;
+
+ if (sensitiveCreate)
+ {
+ grub_tpm2_buffer_pack_u16 (buffer, sensitiveCreate->size);
+ start = buffer->size;
+ grub_tpm2_mu_TPMS_SENSITIVE_CREATE_Marshal (buffer,
+ &sensitiveCreate->sensitive);
+ size = grub_cpu_to_be16 (buffer->size - start);
+
+ grub_memcpy (&buffer->data[start - sizeof (grub_uint16_t)], &size,
+ sizeof (size));
+ }
+ else
+ grub_tpm2_buffer_pack_u16 (buffer, 0);
+}
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_RSA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SIGNATURE_RSA *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->hash);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->sig.size, p->sig.buffer);
+}
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SIGNATURE_ECC *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->hash);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->signatureR.size, p->signatureR.buffer);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->signatureS.size, p->signatureS.buffer);
+}
+
+void
+grub_tpm2_mu_TPMU_HA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_HASH hashAlg,
+ const TPMU_HA *p)
+{
+ switch (hashAlg)
+ {
+ case TPM_ALG_SHA1:
+ for (grub_uint16_t i = 0; i < TPM_SHA1_DIGEST_SIZE; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, p->sha1[i]);
+ break;
+ case TPM_ALG_SHA256:
+ for (grub_uint16_t i = 0; i < TPM_SHA256_DIGEST_SIZE; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, p->sha256[i]);
+ break;
+ case TPM_ALG_SHA384:
+ for (grub_uint16_t i = 0; i < TPM_SHA384_DIGEST_SIZE; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, p->sha384[i]);
+ break;
+ case TPM_ALG_SHA512:
+ for (grub_uint16_t i = 0; i < TPM_SHA512_DIGEST_SIZE; i++)
+ grub_tpm2_buffer_pack_u8 (buffer, p->sha512[i]);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_HA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_HA *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->hashAlg);
+ grub_tpm2_mu_TPMU_HA_Marshal (buffer, p->hashAlg, &p->digest);
+}
+
+void
+grub_tpm2_mu_TPMU_SIGNATURE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SIG_SCHEME sigAlg,
+ const TPMU_SIGNATURE *p)
+{
+ switch (sigAlg)
+ {
+ case TPM_ALG_RSASSA:
+ grub_tpm2_mu_TPMS_SIGNATURE_RSA_Marshal (buffer, (TPMS_SIGNATURE_RSA *)&p->rsassa);
+ break;
+ case TPM_ALG_RSAPSS:
+ grub_tpm2_mu_TPMS_SIGNATURE_RSA_Marshal (buffer, (TPMS_SIGNATURE_RSA *)&p->rsapss);
+ break;
+ case TPM_ALG_ECDSA:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecdsa);
+ break;
+ case TPM_ALG_ECDAA:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecdaa);
+ break;
+ case TPM_ALG_SM2:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (buffer, (TPMS_SIGNATURE_ECC *)&p->sm2);
+ break;
+ case TPM_ALG_ECSCHNORR:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecschnorr);
+ break;
+ case TPM_ALG_HMAC:
+ grub_tpm2_mu_TPMT_HA_Marshal (buffer, &p->hmac);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_SIGNATURE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SIGNATURE *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->sigAlg);
+ grub_tpm2_mu_TPMU_SIGNATURE_Marshal (buffer, p->sigAlg, &p->signature);
+}
+
+void
+grub_tpm2_mu_TPMT_TK_VERIFIED_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_TK_VERIFIED *p)
+{
+ grub_tpm2_buffer_pack_u16 (buffer, p->tag);
+ grub_tpm2_buffer_pack_u32 (buffer, p->hierarchy);
+ grub_tpm2_mu_TPM2B_Marshal (buffer, p->digest.size, p->digest.buffer);
+}
+
+static void
+__tpm2_mu_TPM2B_BUFFER_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B* p, grub_uint16_t bound)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->size);
+
+ if (p->size > bound)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ grub_tpm2_buffer_unpack (buffer, &p->buffer, p->size);
+}
+
+#define TPM2B_BUFFER_UNMARSHAL(buffer, type, data) \
+ __tpm2_mu_TPM2B_BUFFER_Unmarshal(buffer, (TPM2B *)data, sizeof(type) - sizeof(grub_uint16_t))
+
+void
+grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_AUTH_RESPONSE* p)
+{
+ grub_uint8_t tmp;
+ grub_uint32_t tmp32;
+
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->nonce.size);
+
+ if (p->nonce.size)
+ grub_tpm2_buffer_unpack (buffer, &p->nonce.buffer, p->nonce.size);
+
+ grub_tpm2_buffer_unpack_u8 (buffer, &tmp);
+ tmp32 = tmp;
+ grub_memcpy (&p->sessionAttributes, &tmp32, sizeof (grub_uint32_t));
+
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->hmac.size);
+
+ if (p->hmac.size)
+ grub_tpm2_buffer_unpack (buffer, &p->hmac.buffer, p->hmac.size);
+}
+
+void
+grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_DIGEST* digest)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_DIGEST, digest);
+}
+
+void
+grub_tpm2_mu_TPM2B_NONCE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NONCE* nonce)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_NONCE, nonce);
+}
+
+void
+grub_tpm2_mu_TPM2B_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_DATA* data)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_DATA, data);
+}
+
+void
+grub_tpm2_mu_TPMS_CREATION_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_CREATION_DATA *data)
+{
+ grub_tpm2_mu_TPML_PCR_SELECTION_Unmarshal (buffer, &data->pcrSelect);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &data->pcrDigest);
+ grub_tpm2_buffer_unpack_u8 (buffer, (grub_uint8_t *)&data->locality);
+ grub_tpm2_buffer_unpack_u16 (buffer, &data->parentNameAlg);
+ grub_tpm2_mu_TPM2B_NAME_Unmarshal (buffer, &data->parentName);
+ grub_tpm2_mu_TPM2B_NAME_Unmarshal (buffer, &data->parentQualifiedName);
+ grub_tpm2_mu_TPM2B_DATA_Unmarshal (buffer, &data->outsideInfo);
+}
+
+void
+grub_tpm2_mu_TPM2B_CREATION_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_CREATION_DATA *data)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &data->size);
+ grub_tpm2_mu_TPMS_CREATION_DATA_Unmarshal (buffer, &data->creationData);
+}
+
+void
+grub_tpm2_mu_TPM2B_PRIVATE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PRIVATE *private)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_PRIVATE, private);
+}
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_SENSITIVE_DATA *data)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_SENSITIVE_DATA, data);
+}
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_KEY_RSA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PUBLIC_KEY_RSA *rsa)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_PUBLIC_KEY_RSA, rsa);
+}
+
+void
+grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_ECC_PARAMETER *param)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_ECC_PARAMETER, param);
+}
+
+void
+grub_tpm2_mu_TPMA_OBJECT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMA_OBJECT *p)
+{
+ grub_tpm2_buffer_unpack_u32 (buffer, (grub_uint32_t*)p);
+}
+
+void
+grub_tpm2_mu_TPMS_SCHEME_HMAC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SCHEME_HMAC *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->hashAlg);
+}
+
+void
+grub_tpm2_mu_TPMS_SCHEME_XOR_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SCHEME_XOR *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->hashAlg);
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->kdf);
+}
+
+void
+grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_KEYEDHASH_SCHEME scheme,
+ TPMU_SCHEME_KEYEDHASH *p)
+{
+ switch (scheme)
+ {
+ case TPM_ALG_HMAC:
+ grub_tpm2_mu_TPMS_SCHEME_HMAC_Unmarshal (buffer, &p->hmac);
+ break;
+ case TPM_ALG_XOR:
+ grub_tpm2_mu_TPMS_SCHEME_XOR_Unmarshal (buffer, &p->exclusiveOr);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_KEYEDHASH_SCHEME *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->scheme);
+ grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Unmarshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_KEYEDHASH_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Unmarshal (buffer, &p->scheme);
+}
+
+void
+grub_tpm2_mu_TPMU_SYM_KEY_BITS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SYM_OBJECT algorithm,
+ TPMU_SYM_KEY_BITS *p)
+{
+ switch (algorithm)
+ {
+ case TPM_ALG_AES:
+ case TPM_ALG_SM4:
+ case TPM_ALG_CAMELLIA:
+ case TPM_ALG_XOR:
+ grub_tpm2_buffer_unpack_u16 (buffer, (grub_uint16_t*) p);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMU_SYM_MODE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SYM_OBJECT algorithm,
+ TPMU_SYM_MODE *p)
+{
+ switch (algorithm)
+ {
+ case TPM_ALG_AES:
+ case TPM_ALG_SM4:
+ case TPM_ALG_CAMELLIA:
+ grub_tpm2_buffer_unpack_u16 (buffer, (grub_uint16_t*) p);
+ break;
+ case TPM_ALG_XOR:
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_SYM_DEF_OBJECT *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->algorithm);
+ grub_tpm2_mu_TPMU_SYM_KEY_BITS_Unmarshal (buffer, p->algorithm, &p->keyBits);
+ grub_tpm2_mu_TPMU_SYM_MODE_Unmarshal (buffer, p->algorithm, &p->mode);
+}
+
+void
+grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SYMCIPHER_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Unmarshal (buffer, &p->sym);
+}
+
+void
+grub_tpm2_mu_TPMU_ASYM_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_RSA_DECRYPT scheme,
+ TPMU_ASYM_SCHEME *p __attribute__((unused)))
+{
+ switch (scheme)
+ {
+ case TPM_ALG_NULL:
+ break;
+ default:
+ /* Unsupported */
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_RSA_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_RSA_SCHEME *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->scheme);
+ grub_tpm2_mu_TPMU_ASYM_SCHEME_Unmarshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_RSA_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_RSA_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Unmarshal (buffer, &p->symmetric);
+ grub_tpm2_mu_TPMT_RSA_SCHEME_Unmarshal (buffer, &p->scheme);
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->keyBits);
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->exponent);
+}
+
+void
+grub_tpm2_mu_TPMT_ECC_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_ECC_SCHEME *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->scheme);
+ grub_tpm2_mu_TPMU_ASYM_SCHEME_Unmarshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMU_KDF_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_KDF scheme,
+ TPMU_KDF_SCHEME *p)
+{
+ switch (scheme)
+ {
+ case TPM_ALG_MGF1:
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->mgf1.hashAlg);
+ break;
+ case TPM_ALG_KDF1_SP800_56A:
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->kdf1_sp800_56a.hashAlg);
+ break;
+ case TPM_ALG_KDF2:
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->kdf2.hashAlg);
+ break;
+ case TPM_ALG_KDF1_SP800_108:
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->kdf1_sp800_108.hashAlg);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_KDF_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_KDF_SCHEME *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->scheme);
+ grub_tpm2_mu_TPMU_KDF_SCHEME_Unmarshal (buffer, p->scheme, &p->details);
+}
+
+void
+grub_tpm2_mu_TPMS_ECC_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_ECC_PARMS *p)
+{
+ grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Unmarshal (buffer, &p->symmetric);
+ grub_tpm2_mu_TPMT_ECC_SCHEME_Unmarshal (buffer, &p->scheme );
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->curveID);
+ grub_tpm2_mu_TPMT_KDF_SCHEME_Unmarshal (buffer, &p->kdf);
+}
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ grub_uint32_t type,
+ TPMU_PUBLIC_PARMS *p)
+{
+ switch (type)
+ {
+ case TPM_ALG_KEYEDHASH:
+ grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Unmarshal (buffer, &p->keyedHashDetail);
+ break;
+ case TPM_ALG_SYMCIPHER:
+ grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Unmarshal (buffer, &p->symDetail);
+ break;
+ case TPM_ALG_RSA:
+ grub_tpm2_mu_TPMS_RSA_PARMS_Unmarshal (buffer, &p->rsaDetail);
+ break;
+ case TPM_ALG_ECC:
+ grub_tpm2_mu_TPMS_ECC_PARMS_Unmarshal (buffer, &p->eccDetail);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMS_ECC_POINT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_ECC_POINT *p)
+{
+ grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (buffer, &p->x);
+ grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (buffer, &p->y);
+}
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_ID_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_PUBLIC type,
+ TPMU_PUBLIC_ID *p)
+{
+ switch(type)
+ {
+ case TPM_ALG_KEYEDHASH:
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->keyedHash);
+ break;
+ case TPM_ALG_SYMCIPHER:
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->sym);
+ break;
+ case TPM_ALG_RSA:
+ grub_tpm2_mu_TPM2B_PUBLIC_KEY_RSA_Unmarshal (buffer, &p->rsa);
+ break;
+ case TPM_ALG_ECC:
+ grub_tpm2_mu_TPMS_ECC_POINT_Unmarshal (buffer, &p->ecc);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_PUBLIC *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->type);
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->nameAlg);
+ grub_tpm2_mu_TPMA_OBJECT_Unmarshal (buffer, &p->objectAttributes);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->authPolicy);
+ grub_tpm2_mu_TPMU_PUBLIC_PARMS_Unmarshal (buffer, p->type, &p->parameters);
+ grub_tpm2_mu_TPMU_PUBLIC_ID_Unmarshal (buffer, p->type, &p->unique);
+}
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PUBLIC *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->size);
+ grub_tpm2_mu_TPMT_PUBLIC_Unmarshal (buffer, &p->publicArea);
+}
+
+void
+grub_tpm2_mu_TPMS_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_NV_PUBLIC *p)
+{
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->nvIndex);
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->nameAlg);
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->attributes);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->authPolicy);
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->dataSize);
+}
+
+void
+grub_tpm2_mu_TPM2B_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NV_PUBLIC *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->size);
+ grub_tpm2_mu_TPMS_NV_PUBLIC_Unmarshal (buffer, &p->nvPublic);
+}
+
+void
+grub_tpm2_mu_TPM2B_NAME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NAME *n)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_NAME, n);
+}
+
+void
+grub_tpm2_mu_TPMS_TAGGED_PROPERTY_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_TAGGED_PROPERTY* property)
+{
+ grub_tpm2_buffer_unpack_u32 (buffer, &property->property);
+ grub_tpm2_buffer_unpack_u32 (buffer, &property->value);
+}
+
+void
+grub_tpm2_mu_TPMT_TK_CREATION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_CREATION *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->tag);
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->hierarchy);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->digest);
+}
+
+void
+grub_tpm2_mu_TPMT_TK_HASHCHECK_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_HASHCHECK *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->tag);
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->hierarchy);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->digest);
+}
+
+void
+grub_tpm2_mu_TPMT_TK_VERIFIED_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_VERIFIED *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->tag);
+ grub_tpm2_buffer_unpack_u32 (buffer, &p->hierarchy);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &p->digest);
+}
+
+void
+grub_tpm2_mu_TPMS_PCR_SELECTION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_PCR_SELECTION* pcrSelection)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &pcrSelection->hash);
+ grub_tpm2_buffer_unpack_u8 (buffer, &pcrSelection->sizeOfSelect);
+
+ if (pcrSelection->sizeOfSelect > TPM_PCR_SELECT_MAX)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ for (grub_uint32_t i = 0; i < pcrSelection->sizeOfSelect; i++)
+ grub_tpm2_buffer_unpack_u8 (buffer, &pcrSelection->pcrSelect[i]);
+}
+
+void
+grub_tpm2_mu_TPML_PCR_SELECTION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPML_PCR_SELECTION* pcrSelection)
+{
+ grub_tpm2_buffer_unpack_u32 (buffer, &pcrSelection->count);
+
+ if (pcrSelection->count > TPM_NUM_PCR_BANKS)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ for (grub_uint32_t i = 0; i < pcrSelection->count; i++)
+ grub_tpm2_mu_TPMS_PCR_SELECTION_Unmarshal (buffer, &pcrSelection->pcrSelections[i]);
+}
+
+void
+grub_tpm2_mu_TPML_DIGEST_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPML_DIGEST* digest)
+{
+ grub_tpm2_buffer_unpack_u32 (buffer, &digest->count);
+
+ if (digest->count > 8)
+ {
+ buffer->error = 1;
+ return;
+ }
+
+ for (grub_uint32_t i = 0; i < digest->count; i++)
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (buffer, &digest->digests[i]);
+}
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_RSA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SIGNATURE_RSA *rsa)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &rsa->hash);
+ grub_tpm2_mu_TPM2B_PUBLIC_KEY_RSA_Unmarshal (buffer, &rsa->sig);
+}
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SIGNATURE_ECC *ecc)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &ecc->hash);
+ grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (buffer, &ecc->signatureR);
+ grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (buffer, &ecc->signatureS);
+}
+
+void
+grub_tpm2_mu_TPMU_HA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_HASH hashAlg,
+ TPMU_HA *p)
+{
+ switch (hashAlg)
+ {
+ case TPM_ALG_SHA1:
+ grub_tpm2_buffer_unpack (buffer, &p->sha1, TPM_SHA1_DIGEST_SIZE);
+ break;
+ case TPM_ALG_SHA256:
+ grub_tpm2_buffer_unpack (buffer, &p->sha256, TPM_SHA256_DIGEST_SIZE);
+ break;
+ case TPM_ALG_SHA384:
+ grub_tpm2_buffer_unpack (buffer, &p->sha384, TPM_SHA384_DIGEST_SIZE);
+ break;
+ case TPM_ALG_SHA512:
+ grub_tpm2_buffer_unpack (buffer, &p->sha512, TPM_SHA512_DIGEST_SIZE);
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_HA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_HA *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->hashAlg);
+ grub_tpm2_mu_TPMU_HA_Unmarshal (buffer, p->hashAlg, &p->digest);
+}
+
+void
+grub_tpm2_mu_TPMU_SIGNATURE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SIG_SCHEME sigAlg,
+ TPMU_SIGNATURE *p)
+{
+ switch (sigAlg)
+ {
+ case TPM_ALG_RSASSA:
+ grub_tpm2_mu_TPMS_SIGNATURE_RSA_Unmarshal (buffer, (TPMS_SIGNATURE_RSA *)&p->rsassa);
+ break;
+ case TPM_ALG_RSAPSS:
+ grub_tpm2_mu_TPMS_SIGNATURE_RSA_Unmarshal (buffer, (TPMS_SIGNATURE_RSA *)&p->rsapss);
+ break;
+ case TPM_ALG_ECDSA:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecdsa);
+ break;
+ case TPM_ALG_ECDAA:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecdaa);
+ break;
+ case TPM_ALG_SM2:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (buffer, (TPMS_SIGNATURE_ECC *)&p->sm2);
+ break;
+ case TPM_ALG_ECSCHNORR:
+ grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (buffer, (TPMS_SIGNATURE_ECC *)&p->ecschnorr);
+ break;
+ case TPM_ALG_HMAC:
+ grub_tpm2_mu_TPMT_HA_Unmarshal (buffer, &p->hmac);
+ break;
+ case TPM_ALG_NULL:
+ break;
+ default:
+ buffer->error = 1;
+ break;
+ }
+}
+
+void
+grub_tpm2_mu_TPMT_SIGNATURE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_SIGNATURE *p)
+{
+ grub_tpm2_buffer_unpack_u16 (buffer, &p->sigAlg);
+ grub_tpm2_mu_TPMU_SIGNATURE_Unmarshal (buffer, p->sigAlg, &p->signature);
+}
diff --git a/grub-core/tpm2/tcg2.c b/grub-core/tpm2/tcg2.c
new file mode 100644
index 000000000..9e4b7f565
--- /dev/null
+++ b/grub-core/tpm2/tcg2.c
@@ -0,0 +1,143 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/efi/api.h>
+#include <grub/efi/efi.h>
+#include <grub/efi/tpm.h>
+#include <grub/mm.h>
+#include <grub/tpm2/tcg2.h>
+
+static grub_err_t
+grub_tcg2_get_caps (grub_efi_tpm2_protocol_t *protocol, int *tpm2,
+ grub_size_t *max_output_size)
+{
+ grub_efi_status_t status;
+
+ static int has_caps = 0;
+ static EFI_TCG2_BOOT_SERVICE_CAPABILITY caps =
+ {
+ .Size = (grub_uint8_t) sizeof (caps)
+ };
+
+ if (has_caps)
+ goto exit;
+
+ status = protocol->get_capability (protocol, &caps);
+ if (status != GRUB_EFI_SUCCESS || !caps.TPMPresentFlag)
+ return GRUB_ERR_FILE_NOT_FOUND;
+
+ has_caps = 1;
+
+exit:
+ if (tpm2)
+ *tpm2 = caps.TPMPresentFlag;
+ if (max_output_size)
+ *max_output_size = caps.MaxResponseSize;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tcg2_get_protocol (grub_efi_tpm2_protocol_t **protocol)
+{
+ static grub_guid_t tpm2_guid = EFI_TPM2_GUID;
+ static grub_efi_tpm2_protocol_t *tpm2_protocol = NULL;
+
+ int tpm2;
+ grub_efi_handle_t *handles;
+ grub_efi_uintn_t num_handles;
+ grub_efi_handle_t tpm2_handle;
+ grub_err_t err = GRUB_ERR_FILE_NOT_FOUND;
+
+ if (tpm2_protocol)
+ {
+ *protocol = tpm2_protocol;
+ return GRUB_ERR_NONE;
+ }
+
+ handles = grub_efi_locate_handle (GRUB_EFI_BY_PROTOCOL, &tpm2_guid, NULL,
+ &num_handles);
+ if (!handles || !num_handles)
+ return err;
+
+ tpm2_handle = handles[0];
+
+ tpm2_protocol = grub_efi_open_protocol (tpm2_handle, &tpm2_guid,
+ GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (!tpm2_protocol)
+ goto exit;
+
+ err = grub_tcg2_get_caps (tpm2_protocol, &tpm2, NULL);
+ if (err || !tpm2)
+ goto exit;
+
+ *protocol = tpm2_protocol;
+ err = GRUB_ERR_NONE;
+
+exit:
+ grub_free (handles);
+ return err;
+}
+
+grub_err_t
+grub_tcg2_get_max_output_size (grub_size_t *size)
+{
+ grub_err_t err;
+ grub_size_t max;
+ grub_efi_tpm2_protocol_t *protocol;
+
+ if (!size)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ err = grub_tcg2_get_protocol (&protocol);
+ if (err)
+ return err;
+
+ err = grub_tcg2_get_caps (protocol, NULL, &max);
+ if (err)
+ return err;
+
+ *size = max;
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tcg2_submit_command (grub_size_t input_size,
+ grub_uint8_t *input,
+ grub_size_t output_size,
+ grub_uint8_t *output)
+{
+ grub_err_t err;
+ grub_efi_status_t status;
+ grub_efi_tpm2_protocol_t *protocol;
+
+ if (!input_size || !input || !output_size || !output)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ err = grub_tcg2_get_protocol (&protocol);
+ if (err)
+ return err;
+
+ status = protocol->submit_command (protocol, input_size, input,
+ output_size, output);
+ if (status != GRUB_EFI_SUCCESS)
+ return GRUB_ERR_INVALID_COMMAND;
+
+ return GRUB_ERR_NONE;
+}
diff --git a/grub-core/tpm2/tpm2.c b/grub-core/tpm2/tpm2.c
new file mode 100644
index 000000000..06621c28d
--- /dev/null
+++ b/grub-core/tpm2/tpm2.c
@@ -0,0 +1,1048 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/err.h>
+#include <grub/misc.h>
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/mu.h>
+#include <grub/tpm2/tcg2.h>
+#include <grub/tpm2/tpm2.h>
+#include <grub/types.h>
+
+static TPM_RC
+grub_tpm2_submit_command_real (const TPMI_ST_COMMAND_TAG tag,
+ const TPM_CC commandCode,
+ TPM_RC *responseCode,
+ const struct grub_tpm2_buffer *in,
+ struct grub_tpm2_buffer *out)
+{
+ grub_err_t err;
+ struct grub_tpm2_buffer buf;
+ TPMI_ST_COMMAND_TAG tag_out;
+ grub_uint32_t command_size;
+ grub_size_t max_output_size;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&buf);
+ grub_tpm2_buffer_pack_u16 (&buf, tag);
+ grub_tpm2_buffer_pack_u32 (&buf, 0);
+ grub_tpm2_buffer_pack_u32 (&buf, commandCode);
+ grub_tpm2_buffer_pack (&buf, in->data, in->size);
+
+ if (buf.error)
+ return TPM_RC_FAILURE;
+
+ command_size = grub_swap_bytes32 (buf.size);
+ grub_memcpy (&buf.data[sizeof (grub_uint16_t)], &command_size,
+ sizeof (command_size));
+
+ /* Stay within output block limits */
+ err = grub_tcg2_get_max_output_size (&max_output_size);
+ if (err || max_output_size > out->cap)
+ max_output_size = out->cap - 1;
+
+ /* Submit */
+ err = grub_tcg2_submit_command (buf.size, buf.data, max_output_size,
+ out->data);
+ if (err)
+ return TPM_RC_FAILURE;
+
+ /* Unmarshal */
+ out->size = sizeof (grub_uint16_t) + sizeof (grub_uint32_t) +
+ sizeof (grub_uint32_t);
+ grub_tpm2_buffer_unpack_u16 (out, &tag_out);
+ grub_tpm2_buffer_unpack_u32 (out, &command_size);
+ grub_tpm2_buffer_unpack_u32 (out, responseCode);
+ out->size = command_size;
+ if (out->error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+static TPM_RC
+grub_tpm2_submit_command (const TPMI_ST_COMMAND_TAG tag,
+ const TPM_CC commandCode,
+ TPM_RC *responseCode,
+ const struct grub_tpm2_buffer *in,
+ struct grub_tpm2_buffer *out)
+{
+ TPM_RC err;
+ int retry_cnt = 0;
+
+ /* Catch TPM_RC_RETRY and send the command again */
+ do {
+ err = grub_tpm2_submit_command_real (tag, commandCode, responseCode,
+ in, out);
+ if (*responseCode != TPM_RC_RETRY)
+ break;
+
+ retry_cnt++;
+ } while (retry_cnt < 3);
+
+ return err;
+}
+
+TPM_RC
+TPM2_CreatePrimary (const TPMI_RH_HIERARCHY primaryHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE_CREATE *inSensitive,
+ const TPM2B_PUBLIC *inPublic,
+ const TPM2B_DATA *outsideInfo,
+ const TPML_PCR_SELECTION *creationPCR,
+ TPM_HANDLE *objectHandle,
+ TPM2B_PUBLIC *outPublic,
+ TPM2B_CREATION_DATA *creationData,
+ TPM2B_DIGEST *creationHash,
+ TPMT_TK_CREATION *creationTicket,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM_HANDLE objectHandleTmp;
+ TPM2B_PUBLIC outPublicTmp;
+ TPM2B_CREATION_DATA creationDataTmp;
+ TPM2B_DIGEST creationHashTmp;
+ TPMT_TK_CREATION creationTicketTmp;
+ TPM2B_NAME nameTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t parameterSize;
+
+ if (!inSensitive || !inPublic || !outsideInfo || !creationPCR)
+ return TPM_RC_VALUE;
+
+ if (!objectHandle)
+ objectHandle = &objectHandleTmp;
+ if (!outPublic)
+ outPublic = &outPublicTmp;
+ if (!creationData)
+ creationData = &creationDataTmp;
+ if (!creationHash)
+ creationHash = &creationHashTmp;
+ if (!creationTicket)
+ creationTicket = &creationTicketTmp;
+ if (!name)
+ name = &nameTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (outPublic, 0, sizeof (*outPublic));
+ grub_memset (creationData, 0, sizeof (*creationData));
+ grub_memset (creationHash, 0, sizeof (*creationHash));
+ grub_memset (creationTicket, 0, sizeof (*creationTicket));
+ grub_memset (name, 0, sizeof (*name));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, primaryHandle);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPM2B_SENSITIVE_CREATE_Marshal (&in, inSensitive);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&in, inPublic);
+ grub_tpm2_mu_TPM2B_Marshal (&in, outsideInfo->size, outsideInfo->buffer);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&in, creationPCR);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_CreatePrimary, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ grub_tpm2_buffer_unpack_u32 (&out, objectHandle);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (&out, outPublic);
+ grub_tpm2_mu_TPM2B_CREATION_DATA_Unmarshal (&out, creationData);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (&out, creationHash);
+ grub_tpm2_mu_TPMT_TK_CREATION_Unmarshal (&out, creationTicket);
+ grub_tpm2_mu_TPM2B_NAME_Unmarshal (&out, name);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_StartAuthSession (const TPMI_DH_OBJECT tpmKey,
+ const TPMI_DH_ENTITY bind,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_NONCE *nonceCaller,
+ const TPM2B_ENCRYPTED_SECRET *encryptedSalt,
+ const TPM_SE sessionType,
+ const TPMT_SYM_DEF *symmetric,
+ const TPMI_ALG_HASH authHash,
+ TPMI_SH_AUTH_SESSION *sessionHandle,
+ TPM2B_NONCE *nonceTpm,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_SH_AUTH_SESSION sessionHandleTmp;
+ TPM2B_NONCE nonceTpmTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!nonceCaller || !symmetric)
+ return TPM_RC_VALUE;
+
+ if (tpmKey == TPM_RH_NULL &&
+ (encryptedSalt && encryptedSalt->size != 0))
+ return TPM_RC_VALUE;
+
+ if (!sessionHandle)
+ sessionHandle = &sessionHandleTmp;
+ if (!nonceTpm)
+ nonceTpm = &nonceTpmTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (sessionHandle, 0, sizeof (*sessionHandle));
+ grub_memset (nonceTpm, 0, sizeof (*nonceTpm));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, tpmKey);
+ grub_tpm2_buffer_pack_u32 (&in, bind);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPM2B_Marshal (&in, nonceCaller->size, nonceCaller->buffer);
+ if (encryptedSalt)
+ grub_tpm2_mu_TPM2B_Marshal (&in, encryptedSalt->size, encryptedSalt->secret);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_tpm2_buffer_pack_u8 (&in, sessionType);
+ grub_tpm2_mu_TPMT_SYM_DEF_Marshal (&in, symmetric);
+ grub_tpm2_buffer_pack_u16 (&in, authHash);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_StartAuthSession, &responseCode,
+ &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ grub_tpm2_buffer_unpack_u32 (&out, sessionHandle);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPM2B_NONCE_Unmarshal (&out, nonceTpm);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_PolicyPCR (const TPMI_SH_POLICY policySessions,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *pcrDigest,
+ const TPML_PCR_SELECTION *pcrs,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!pcrs)
+ return TPM_RC_VALUE;
+
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, policySessions);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (pcrDigest)
+ grub_tpm2_mu_TPM2B_Marshal (&in, pcrDigest->size, pcrDigest->buffer);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&in, pcrs);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_PolicyPCR, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal*/
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_ReadPublic (const TPMI_DH_OBJECT objectHandle,
+ const TPMS_AUTH_COMMAND* authCommand,
+ TPM2B_PUBLIC *outPublic)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t parameterSize;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, objectHandle);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_ReadPublic, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (&out, outPublic);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_Load (const TPMI_DH_OBJECT parent_handle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_PRIVATE *inPrivate,
+ const TPM2B_PUBLIC *inPublic,
+ TPM_HANDLE *objectHandle,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM_HANDLE objectHandleTmp;
+ TPM2B_NAME nonceTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!inPrivate || !inPublic)
+ return TPM_RC_VALUE;
+
+ if (!objectHandle)
+ objectHandle = &objectHandleTmp;
+ if (!name)
+ name = &nonceTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (objectHandle, 0, sizeof (*objectHandle));
+ grub_memset (name, 0, sizeof (*name));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, parent_handle);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPM2B_Marshal (&in, inPrivate->size, inPrivate->buffer);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&in, inPublic);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_Load, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ grub_tpm2_buffer_unpack_u32 (&out, objectHandle);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPM2B_NAME_Unmarshal (&out, name);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_LoadExternal (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE *inPrivate,
+ const TPM2B_PUBLIC *inPublic,
+ const TPMI_RH_HIERARCHY hierarchy,
+ TPM_HANDLE *objectHandle,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM_HANDLE objectHandleTmp;
+ TPM2B_NAME nameTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!inPublic)
+ return TPM_RC_VALUE;
+
+ if (!objectHandle)
+ objectHandle = &objectHandleTmp;
+ if (!name)
+ name = &nameTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (objectHandle, 0, sizeof (*objectHandle));
+ grub_memset (name, 0, sizeof (*name));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (inPrivate)
+ grub_tpm2_mu_TPM2B_SENSITIVE_Marshal (&in, inPrivate);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&in, inPublic);
+ grub_tpm2_buffer_pack_u32 (&in, hierarchy);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_LoadExternal, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ grub_tpm2_buffer_unpack_u32 (&out, objectHandle);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPM2B_NAME_Unmarshal (&out, name);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_Unseal (const TPMI_DH_OBJECT itemHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ TPM2B_SENSITIVE_DATA *outData,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM2B_SENSITIVE_DATA outDataTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!outData)
+ outData = &outDataTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (outData, 0, sizeof (*outData));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, itemHandle);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_Unseal, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPM2B_SENSITIVE_DATA_Unmarshal (&out, outData);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_FlushContext (const TPMI_DH_CONTEXT handle)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM_RC responseCode;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, handle);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (TPM_ST_NO_SESSIONS, TPM_CC_FlushContext,
+ &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_PCR_Read (const TPMS_AUTH_COMMAND *authCommand,
+ const TPML_PCR_SELECTION *pcrSelectionIn,
+ grub_uint32_t *pcrUpdateCounter,
+ TPML_PCR_SELECTION *pcrSelectionOut,
+ TPML_DIGEST *pcrValues,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ grub_uint32_t pcrUpdateCounterTmp;
+ TPML_PCR_SELECTION pcrSelectionOutTmp;
+ TPML_DIGEST pcrValuesTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t parameterSize;
+
+ if (!pcrSelectionIn)
+ return TPM_RC_VALUE;
+
+ if (!pcrUpdateCounter)
+ pcrUpdateCounter = &pcrUpdateCounterTmp;
+ if (!pcrSelectionOut)
+ pcrSelectionOut = &pcrSelectionOutTmp;
+ if (!pcrValues)
+ pcrValues = &pcrValuesTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&in, pcrSelectionIn);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_PCR_Read, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_buffer_unpack_u32 (&out, pcrUpdateCounter);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Unmarshal (&out, pcrSelectionOut);
+ grub_tpm2_mu_TPML_DIGEST_Unmarshal (&out, pcrValues);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_PolicyGetDigest (const TPMI_SH_POLICY policySession,
+ const TPMS_AUTH_COMMAND *authCommand,
+ TPM2B_DIGEST *policyDigest,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPM2B_DIGEST policyDigestTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t parameterSize;
+
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+ if (!policyDigest)
+ policyDigest = &policyDigestTmp;
+
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+ grub_memset (policyDigest, 0, sizeof (*policyDigest));
+
+ /* Submit */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, policySession);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_PolicyGetDigest, &responseCode,
+ &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (&out, policyDigest);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_Create (const TPMI_DH_OBJECT parentHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE_CREATE *inSensitive,
+ const TPM2B_PUBLIC *inPublic,
+ const TPM2B_DATA *outsideInfo,
+ const TPML_PCR_SELECTION *creationPCR,
+ TPM2B_PRIVATE *outPrivate,
+ TPM2B_PUBLIC *outPublic,
+ TPM2B_CREATION_DATA *creationData,
+ TPM2B_DIGEST *creationHash,
+ TPMT_TK_CREATION *creationTicket,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPM2B_PUBLIC outPublicTmp;
+ TPM2B_PRIVATE outPrivateTmp;
+ TPM2B_CREATION_DATA creationDataTmp;
+ TPM2B_DIGEST creationHashTmp;
+ TPMT_TK_CREATION creationTicketTmp;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS:TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ TPM_RC rc;
+ grub_uint32_t parameterSize;
+
+ if (!inSensitive || !inPublic || !outsideInfo || !creationPCR)
+ return TPM_RC_VALUE;
+
+ if (!outPrivate)
+ outPrivate = &outPrivateTmp;
+ if (!outPublic)
+ outPublic = &outPublicTmp;
+ if (!creationData)
+ creationData = &creationDataTmp;
+ if (!creationHash)
+ creationHash = &creationHashTmp;
+ if (!creationTicket)
+ creationTicket = &creationTicketTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (outPrivate, 0, sizeof (*outPrivate));
+ grub_memset (outPublic, 0, sizeof (*outPublic));
+ grub_memset (creationData, 0, sizeof (*creationData));
+ grub_memset (creationHash, 0, sizeof (*creationHash));
+ grub_memset (creationTicket, 0, sizeof (*creationTicket));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, parentHandle);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPM2B_SENSITIVE_CREATE_Marshal (&in, inSensitive);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&in, inPublic);
+ grub_tpm2_mu_TPM2B_Marshal (&in, outsideInfo->size, outsideInfo->buffer);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&in, creationPCR);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_Create, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_mu_TPM2B_PRIVATE_Unmarshal (&out, outPrivate);
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (&out, outPublic);
+ grub_tpm2_mu_TPM2B_CREATION_DATA_Unmarshal (&out, creationData);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (&out, creationHash);
+ grub_tpm2_mu_TPMT_TK_CREATION_Unmarshal (&out, creationTicket);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal(&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_EvictControl (const TPMI_RH_PROVISION auth,
+ const TPMI_DH_OBJECT objectHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPMI_DH_PERSISTENT persistentHandle,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ TPM_RC rc;
+ grub_uint32_t parameterSize;
+
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, auth);
+ grub_tpm2_buffer_pack_u32 (&in, objectHandle);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_buffer_pack_u32 (&in, persistentHandle);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_EvictControl, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ {
+ grub_tpm2_buffer_unpack_u32 (&out, ¶meterSize);
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal(&out, authResponse);
+ }
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_Hash (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_MAX_BUFFER *data,
+ const TPMI_ALG_HASH hashAlg,
+ const TPMI_RH_HIERARCHY hierarchy,
+ TPM2B_DIGEST *outHash,
+ TPMT_TK_HASHCHECK *validation,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPM2B_DIGEST outHashTmp;
+ TPMT_TK_HASHCHECK validationTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (hashAlg == TPM_ALG_NULL)
+ return TPM_RC_VALUE;
+
+ if (!outHash)
+ outHash = &outHashTmp;
+ if (!validation)
+ validation = &validationTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (outHash, 0, sizeof (*outHash));
+ grub_memset (validation, 0, sizeof (*validation));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (data)
+ grub_tpm2_mu_TPM2B_Marshal (&in, data->size, data->buffer);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_tpm2_buffer_pack_u16 (&in, hashAlg);
+ grub_tpm2_buffer_pack_u32 (&in, hierarchy);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_Hash, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (&out, outHash);
+ grub_tpm2_mu_TPMT_TK_HASHCHECK_Unmarshal (&out, validation);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_VerifySignature (const TPMI_DH_OBJECT keyHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *digest,
+ const TPMT_SIGNATURE *signature,
+ TPMT_TK_VERIFIED *validation,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPMT_TK_VERIFIED validationTmp;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!digest || !signature)
+ return TPM_RC_VALUE;
+
+ if (!validation)
+ validation = &validationTmp;
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (validation, 0, sizeof (*validation));
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_buffer_pack_u32 (&in, keyHandle);
+ grub_tpm2_mu_TPM2B_Marshal (&in, digest->size, digest->buffer);
+ grub_tpm2_mu_TPMT_SIGNATURE_Marshal (&in, signature);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_VerifySignature, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPMT_TK_VERIFIED_Unmarshal (&out, validation);
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_PolicyAuthorize (const TPMI_SH_POLICY policySession,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *approvedPolicy,
+ const TPM2B_NONCE *policyRef,
+ const TPM2B_NAME *keySign,
+ const TPMT_TK_VERIFIED *checkTicket,
+ TPMS_AUTH_RESPONSE *authResponse)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMS_AUTH_RESPONSE authResponseTmp;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+ grub_uint32_t param_size;
+
+ if (!approvedPolicy || !keySign || !checkTicket)
+ return TPM_RC_VALUE;
+
+ if (!authResponse)
+ authResponse = &authResponseTmp;
+
+ grub_memset (authResponse, 0, sizeof (*authResponse));
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, policySession);
+ if (authCommand)
+ grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_mu_TPM2B_Marshal (&in, approvedPolicy->size, approvedPolicy->buffer);
+ if (policyRef)
+ grub_tpm2_mu_TPM2B_Marshal (&in, policyRef->size, policyRef->buffer);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_tpm2_mu_TPM2B_Marshal (&in, keySign->size, keySign->name);
+ grub_tpm2_mu_TPMT_TK_VERIFIED_Marshal (&in, checkTicket);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_PolicyAuthorize, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ {
+ grub_tpm2_buffer_unpack_u32 (&out, ¶m_size);
+ grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (&out, authResponse);
+ }
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC
+TPM2_TestParms (const TPMT_PUBLIC_PARMS *parms,
+ const TPMS_AUTH_COMMAND* authCommand)
+{
+ TPM_RC rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC responseCode;
+
+ if (!parms)
+ return TPM_RC_VALUE;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_mu_TPMT_PUBLIC_PARMS_Marshal (&in, parms);
+ if (in.error)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = grub_tpm2_submit_command (tag, TPM_CC_TestParms, &responseCode, &in,
+ &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (out.error)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
diff --git a/include/grub/tpm2/buffer.h b/include/grub/tpm2/buffer.h
new file mode 100644
index 000000000..87dcd8d6c
--- /dev/null
+++ b/include/grub/tpm2/buffer.h
@@ -0,0 +1,65 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_BUFFER_HEADER
+#define GRUB_TPM2_BUFFER_HEADER 1
+
+#include <grub/types.h>
+
+#define GRUB_TPM2_BUFFER_CAPACITY 4096
+
+struct grub_tpm2_buffer
+{
+ grub_uint8_t data[GRUB_TPM2_BUFFER_CAPACITY];
+ grub_size_t size;
+ grub_size_t offset;
+ grub_size_t cap;
+ int error;
+};
+typedef struct grub_tpm2_buffer *grub_tpm2_buffer_t;
+
+void
+grub_tpm2_buffer_init (grub_tpm2_buffer_t buffer);
+
+void
+grub_tpm2_buffer_pack (grub_tpm2_buffer_t buffer, const void* data,
+ grub_size_t size);
+
+void
+grub_tpm2_buffer_pack_u8 (grub_tpm2_buffer_t buffer, grub_uint8_t value);
+
+void
+grub_tpm2_buffer_pack_u16 (grub_tpm2_buffer_t buffer, grub_uint16_t value);
+
+void
+grub_tpm2_buffer_pack_u32 (grub_tpm2_buffer_t buffer, grub_uint32_t value);
+
+void
+grub_tpm2_buffer_unpack (grub_tpm2_buffer_t buffer, void* data,
+ grub_size_t size);
+
+void
+grub_tpm2_buffer_unpack_u8 (grub_tpm2_buffer_t buffer, grub_uint8_t* value);
+
+void
+grub_tpm2_buffer_unpack_u16 (grub_tpm2_buffer_t buffer, grub_uint16_t* value);
+
+void
+grub_tpm2_buffer_unpack_u32 (grub_tpm2_buffer_t buffer, grub_uint32_t* value);
+
+#endif /* ! GRUB_TPM2_BUFFER_HEADER */
diff --git a/include/grub/tpm2/internal/functions.h b/include/grub/tpm2/internal/functions.h
new file mode 100644
index 000000000..ac3154ef5
--- /dev/null
+++ b/include/grub/tpm2/internal/functions.h
@@ -0,0 +1,156 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_INTERNAL_FUNCTIONS_HEADER
+#define GRUB_TPM2_INTERNAL_FUNCTIONS_HEADER 1
+
+#include <grub/tpm2/internal/structs.h>
+
+TPM_RC
+TPM2_CreatePrimary (const TPMI_RH_HIERARCHY primaryHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE_CREATE *inSensitive,
+ const TPM2B_PUBLIC *inPublic,
+ const TPM2B_DATA *outsideInfo,
+ const TPML_PCR_SELECTION *creationPCR,
+ TPM_HANDLE *objectHandle,
+ TPM2B_PUBLIC *outPublic,
+ TPM2B_CREATION_DATA *creationData,
+ TPM2B_DIGEST *creationHash,
+ TPMT_TK_CREATION *creationTicket,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_StartAuthSession (const TPMI_DH_OBJECT tpmKey,
+ const TPMI_DH_ENTITY bind,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_NONCE *nonceCaller,
+ const TPM2B_ENCRYPTED_SECRET *encryptedSalt,
+ const TPM_SE sessionType,
+ const TPMT_SYM_DEF *symmetric,
+ const TPMI_ALG_HASH authHash,
+ TPMI_SH_AUTH_SESSION *sessionHandle,
+ TPM2B_NONCE *nonceTpm,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_PolicyPCR (const TPMI_SH_POLICY policySession,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *pcrDigest,
+ const TPML_PCR_SELECTION *pcrs,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_ReadPublic (const TPMI_DH_OBJECT objectHandle,
+ const TPMS_AUTH_COMMAND* authCommand,
+ TPM2B_PUBLIC *outPublic);
+
+TPM_RC
+TPM2_Load (const TPMI_DH_OBJECT parent_handle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_PRIVATE *inPrivate,
+ const TPM2B_PUBLIC *inPublic,
+ TPM_HANDLE *objectHandle,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_LoadExternal (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE *inPrivate,
+ const TPM2B_PUBLIC *inPublic,
+ const TPMI_RH_HIERARCHY hierarchy,
+ TPM_HANDLE *objectHandle,
+ TPM2B_NAME *name,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_Unseal (const TPMI_DH_OBJECT item_handle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ TPM2B_SENSITIVE_DATA *outData,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_FlushContext (const TPMI_DH_CONTEXT handle);
+
+TPM_RC
+TPM2_PCR_Read (const TPMS_AUTH_COMMAND *authCommand,
+ const TPML_PCR_SELECTION *pcrSelectionIn,
+ grub_uint32_t *pcrUpdateCounter,
+ TPML_PCR_SELECTION *pcrSelectionOut,
+ TPML_DIGEST *pcrValues,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_PolicyGetDigest (const TPMI_SH_POLICY policySession,
+ const TPMS_AUTH_COMMAND *authCommand,
+ TPM2B_DIGEST *policyDigest,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_Create (const TPMI_DH_OBJECT parentHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_SENSITIVE_CREATE *inSensitive,
+ const TPM2B_PUBLIC *inPublic,
+ const TPM2B_DATA *outsideInfo,
+ const TPML_PCR_SELECTION *creationPCR,
+ TPM2B_PRIVATE *outPrivate,
+ TPM2B_PUBLIC *outPublic,
+ TPM2B_CREATION_DATA *creationData,
+ TPM2B_DIGEST *creationHash,
+ TPMT_TK_CREATION *creationTicket,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_EvictControl (const TPMI_RH_PROVISION auth,
+ const TPMI_DH_OBJECT objectHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPMI_DH_PERSISTENT persistentHandle,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_Hash (const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_MAX_BUFFER *data,
+ const TPMI_ALG_HASH hashAlg,
+ const TPMI_RH_HIERARCHY hierarchy,
+ TPM2B_DIGEST *outHash,
+ TPMT_TK_HASHCHECK *validation,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_VerifySignature (const TPMI_DH_OBJECT keyHandle,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *digest,
+ const TPMT_SIGNATURE *signature,
+ TPMT_TK_VERIFIED *validation,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_PolicyAuthorize (const TPMI_SH_POLICY policySession,
+ const TPMS_AUTH_COMMAND *authCommand,
+ const TPM2B_DIGEST *approvedPolicy,
+ const TPM2B_NONCE *policyRef,
+ const TPM2B_NAME *keySign,
+ const TPMT_TK_VERIFIED *checkTicket,
+ TPMS_AUTH_RESPONSE *authResponse);
+
+TPM_RC
+TPM2_TestParms (const TPMT_PUBLIC_PARMS *parms,
+ const TPMS_AUTH_COMMAND* authCommand);
+
+#endif /* ! GRUB_TPM2_INTERNAL_FUNCTIONS_HEADER */
diff --git a/include/grub/tpm2/internal/structs.h b/include/grub/tpm2/internal/structs.h
new file mode 100644
index 000000000..c615d71e9
--- /dev/null
+++ b/include/grub/tpm2/internal/structs.h
@@ -0,0 +1,768 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_INTERNAL_STRUCTS_HEADER
+#define GRUB_TPM2_INTERNAL_STRUCTS_HEADER 1
+
+#include <grub/tpm2/internal/types.h>
+
+/* TPMS_TAGGED_PROPERTY Structure */
+struct TPMS_TAGGED_PROPERTY
+{
+ TPM_PT property;
+ grub_uint32_t value;
+};
+typedef struct TPMS_TAGGED_PROPERTY TPMS_TAGGED_PROPERTY;
+
+/* TPML_TAGGED_TPM_PROPERTY Structure */
+struct TPML_TAGGED_TPM_PROPERTY
+{
+ grub_uint32_t count;
+ TPMS_TAGGED_PROPERTY tpmProperty[TPM_MAX_TPM_PROPERTIES];
+};
+typedef struct TPML_TAGGED_TPM_PROPERTY TPML_TAGGED_TPM_PROPERTY;
+
+/* TPMU_CAPABILITIES Structure */
+union TPMU_CAPABILITIES
+{
+ TPML_TAGGED_TPM_PROPERTY tpmProperties;
+};
+typedef union TPMU_CAPABILITIES TPMU_CAPABILITIES;
+
+/* TPMS_CAPABILITY_DATA Structure */
+struct TPMS_CAPABILITY_DATA
+{
+ TPM_CAP capability;
+ TPMU_CAPABILITIES data;
+};
+typedef struct TPMS_CAPABILITY_DATA TPMS_CAPABILITY_DATA;
+
+/* TPMS_PCR_SELECT Structure */
+struct TPMS_PCR_SELECT
+{
+ grub_uint8_t sizeOfSelect;
+ grub_uint8_t pcrSelect[TPM_PCR_SELECT_MAX];
+};
+typedef struct TPMS_PCR_SELECT TPMS_PCR_SELECT;
+
+/* TPMS_PCR_SELECTION Structure */
+struct TPMS_PCR_SELECTION
+{
+ TPMI_ALG_HASH hash;
+ grub_uint8_t sizeOfSelect;
+ grub_uint8_t pcrSelect[TPM_PCR_SELECT_MAX];
+};
+typedef struct TPMS_PCR_SELECTION TPMS_PCR_SELECTION;
+
+static inline void TPMS_PCR_SELECTION_SelectPCR(TPMS_PCR_SELECTION* self, grub_uint32_t n)
+{
+ self->pcrSelect[(n / 8)] |= (1 << (n % 8));
+}
+
+/* TPML_PCR_SELECTION Structure */
+struct TPML_PCR_SELECTION
+{
+ grub_uint32_t count;
+ TPMS_PCR_SELECTION pcrSelections[TPM_NUM_PCR_BANKS];
+};
+typedef struct TPML_PCR_SELECTION TPML_PCR_SELECTION;
+
+/* TPMU_HA Structure */
+union TPMU_HA
+{
+ grub_uint8_t sha1[TPM_SHA1_DIGEST_SIZE];
+ grub_uint8_t sha256[TPM_SHA256_DIGEST_SIZE];
+ grub_uint8_t sha384[TPM_SHA384_DIGEST_SIZE];
+ grub_uint8_t sha512[TPM_SHA512_DIGEST_SIZE];
+ grub_uint8_t sm3_256[TPM_SM3_256_DIGEST_SIZE];
+};
+typedef union TPMU_HA TPMU_HA;
+
+/* TPM2B Structure */
+struct TPM2B
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[1];
+};
+typedef struct TPM2B TPM2B;
+
+/* TPM2B_DIGEST Structure */
+struct TPM2B_DIGEST
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[sizeof(TPMU_HA)];
+};
+typedef struct TPM2B_DIGEST TPM2B_DIGEST;
+
+/* TPML_DIGEST Structure */
+struct TPML_DIGEST
+{
+ grub_uint32_t count;
+ TPM2B_DIGEST digests[8];
+};
+typedef struct TPML_DIGEST TPML_DIGEST;
+
+/* TPM2B_NONCE Type */
+typedef TPM2B_DIGEST TPM2B_NONCE;
+
+/* TPMA_SESSION Structure */
+struct TPMA_SESSION
+{
+ unsigned int continueSession:1;
+ unsigned int auditExclusive:1;
+ unsigned int auditReset:1;
+ unsigned int reserved1:2;
+ unsigned int decrypt:1;
+ unsigned int encrypt:1;
+ unsigned int audit:1;
+ unsigned int reserved:24;
+};
+typedef struct TPMA_SESSION TPMA_SESSION;
+
+/* TPM2B_AUTH Type */
+typedef TPM2B_DIGEST TPM2B_AUTH;
+
+/* TPMS_AUTH_COMMAND Structure */
+struct TPMS_AUTH_COMMAND
+{
+ TPMI_SH_AUTH_SESSION sessionHandle;
+ TPM2B_NONCE nonce;
+ TPMA_SESSION sessionAttributes;
+ TPM2B_AUTH hmac;
+};
+typedef struct TPMS_AUTH_COMMAND TPMS_AUTH_COMMAND;
+
+/* TPMS_AUTH_RESPONSE Structure */
+struct TPMS_AUTH_RESPONSE
+{
+ TPM2B_NONCE nonce;
+ TPMA_SESSION sessionAttributes;
+ TPM2B_AUTH hmac;
+};
+typedef struct TPMS_AUTH_RESPONSE TPMS_AUTH_RESPONSE;
+
+/* TPM2B_SENSITIVE_DATA Structure */
+struct TPM2B_SENSITIVE_DATA
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_SYM_DATA];
+};
+typedef struct TPM2B_SENSITIVE_DATA TPM2B_SENSITIVE_DATA;
+
+/* TPMS_SENSITIVE_CREATE Structure */
+struct TPMS_SENSITIVE_CREATE
+{
+ TPM2B_AUTH userAuth;
+ TPM2B_SENSITIVE_DATA data;
+};
+typedef struct TPMS_SENSITIVE_CREATE TPMS_SENSITIVE_CREATE;
+
+/* TPM2B_SENSITIVE_CREATE Structure */
+struct TPM2B_SENSITIVE_CREATE
+{
+ grub_uint16_t size;
+ TPMS_SENSITIVE_CREATE sensitive;
+};
+typedef struct TPM2B_SENSITIVE_CREATE TPM2B_SENSITIVE_CREATE;
+
+/* TPMA_OBJECT Structure */
+struct TPMA_OBJECT
+{
+ unsigned int reserved1:1;
+ unsigned int fixedTPM:1;
+ unsigned int stClear:1;
+ unsigned int reserved2:1;
+ unsigned int fixedParent:1;
+ unsigned int sensitiveDataOrigin:1;
+ unsigned int userWithAuth:1;
+ unsigned int adminWithPolicy:1;
+ unsigned int reserved3:2;
+ unsigned int noDA:1;
+ unsigned int encryptedDuplication:1;
+ unsigned int reserved4:4;
+ unsigned int restricted:1;
+ unsigned int decrypt:1;
+ unsigned int sign:1;
+ unsigned int reserved5:13;
+};
+typedef struct TPMA_OBJECT TPMA_OBJECT;
+
+/* TPMS_SCHEME_HASH Structure */
+struct TPMS_SCHEME_HASH
+{
+ TPMI_ALG_HASH hashAlg;
+};
+typedef struct TPMS_SCHEME_HASH TPMS_SCHEME_HASH;
+
+/* TPMS_SCHEME_HASH Types */
+typedef TPMS_SCHEME_HASH TPMS_KEY_SCHEME_ECDH;
+typedef TPMS_SCHEME_HASH TPMS_KEY_SCHEME_ECMQV;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_RSASSA;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_RSAPSS;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_ECDSA;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_ECDAA;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_SM2;
+typedef TPMS_SCHEME_HASH TPMS_SIG_SCHEME_ECSCHNORR;
+typedef TPMS_SCHEME_HASH TPMS_ENC_SCHEME_RSAES;
+typedef TPMS_SCHEME_HASH TPMS_ENC_SCHEME_OAEP;
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_KDF2;
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_MGF1;
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_KDF1_SP800_56A;
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_KDF2;
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_KDF1_SP800_108;
+
+/* TPMS_SCHEME_HMAC Type */
+typedef TPMS_SCHEME_HASH TPMS_SCHEME_HMAC;
+
+/* TPMS_SCHEME_XOR Structure */
+struct TPMS_SCHEME_XOR
+{
+ TPMI_ALG_HASH hashAlg;
+ TPMI_ALG_KDF kdf;
+};
+typedef struct TPMS_SCHEME_XOR TPMS_SCHEME_XOR;
+
+/* TPMU_SCHEME_KEYEDHASH Union */
+union TPMU_SCHEME_KEYEDHASH
+{
+ TPMS_SCHEME_HMAC hmac;
+ TPMS_SCHEME_XOR exclusiveOr;
+};
+typedef union TPMU_SCHEME_KEYEDHASH TPMU_SCHEME_KEYEDHASH;
+
+/* TPMT_KEYEDHASH_SCHEME Structure */
+struct TPMT_KEYEDHASH_SCHEME
+{
+ TPMI_ALG_KEYEDHASH_SCHEME scheme;
+ TPMU_SCHEME_KEYEDHASH details;
+};
+typedef struct TPMT_KEYEDHASH_SCHEME TPMT_KEYEDHASH_SCHEME;
+
+/* TPMS_KEYEDHASH_PARMS Structure */
+struct TPMS_KEYEDHASH_PARMS
+{
+ TPMT_KEYEDHASH_SCHEME scheme;
+};
+typedef struct TPMS_KEYEDHASH_PARMS TPMS_KEYEDHASH_PARMS;
+
+/* TPMU_SYM_KEY_BITS Union */
+union TPMU_SYM_KEY_BITS
+{
+ TPM_KEY_BITS aes;
+ TPM_KEY_BITS exclusiveOr;
+ TPM_KEY_BITS sm4;
+ TPM_KEY_BITS camellia;
+};
+typedef union TPMU_SYM_KEY_BITS TPMU_SYM_KEY_BITS;
+
+/* TPMU_SYM_MODE Union */
+union TPMU_SYM_MODE
+{
+ TPMI_ALG_SYM_MODE aes;
+ TPMI_ALG_SYM_MODE sm4;
+ TPMI_ALG_SYM_MODE camellia;
+ TPMI_ALG_SYM_MODE sym;
+};
+typedef union TPMU_SYM_MODE TPMU_SYM_MODE;
+
+/* TPMT_SYM_DEF_OBJECT Structure */
+struct TPMT_SYM_DEF_OBJECT
+{
+ TPMI_ALG_SYM_OBJECT algorithm;
+ TPMU_SYM_KEY_BITS keyBits;
+ TPMU_SYM_MODE mode;
+};
+typedef struct TPMT_SYM_DEF_OBJECT TPMT_SYM_DEF_OBJECT;
+
+/* TPMS_SYMCIPHER_PARMS Structure */
+struct TPMS_SYMCIPHER_PARMS
+{
+ TPMT_SYM_DEF_OBJECT sym;
+};
+typedef struct TPMS_SYMCIPHER_PARMS TPMS_SYMCIPHER_PARMS;
+
+/* TPMU_ASYM_SCHEME Union */
+union TPMU_ASYM_SCHEME
+{
+ TPMS_KEY_SCHEME_ECDH ecdh;
+ TPMS_KEY_SCHEME_ECMQV ecmqv;
+ TPMS_SIG_SCHEME_RSASSA rsassa;
+ TPMS_SIG_SCHEME_RSAPSS rsapss;
+ TPMS_SIG_SCHEME_ECDSA ecdsa;
+ TPMS_SIG_SCHEME_ECDAA ecdaa;
+ TPMS_SIG_SCHEME_SM2 sm2;
+ TPMS_SIG_SCHEME_ECSCHNORR ecschnorr;
+ TPMS_ENC_SCHEME_RSAES rsaes;
+ TPMS_ENC_SCHEME_OAEP oaep;
+ TPMS_SCHEME_HASH anySig;
+ unsigned char padding[4];
+};
+typedef union TPMU_ASYM_SCHEME TPMU_ASYM_SCHEME;
+
+/* TPMT_RSA_SCHEME Structure */
+struct TPMT_RSA_SCHEME
+{
+ TPMI_ALG_RSA_SCHEME scheme;
+ TPMU_ASYM_SCHEME details;
+};
+typedef struct TPMT_RSA_SCHEME TPMT_RSA_SCHEME;
+
+/* TPMS_RSA_PARMS Structure */
+struct TPMS_RSA_PARMS
+{
+ TPMT_SYM_DEF_OBJECT symmetric;
+ TPMT_RSA_SCHEME scheme;
+ TPM_KEY_BITS keyBits;
+ grub_uint32_t exponent;
+};
+typedef struct TPMS_RSA_PARMS TPMS_RSA_PARMS;
+
+/* TPMT_ECC_SCHEME Structure */
+struct TPMT_ECC_SCHEME
+{
+ TPMI_ALG_ECC_SCHEME scheme;
+ TPMU_ASYM_SCHEME details;
+};
+typedef struct TPMT_ECC_SCHEME TPMT_ECC_SCHEME;
+
+/* TPMU_KDF_SCHEME Union */
+union TPMU_KDF_SCHEME
+{
+ TPMS_SCHEME_MGF1 mgf1;
+ TPMS_SCHEME_KDF1_SP800_56A kdf1_sp800_56a;
+ TPMS_SCHEME_KDF2 kdf2;
+ TPMS_SCHEME_KDF1_SP800_108 kdf1_sp800_108;
+};
+typedef union TPMU_KDF_SCHEME TPMU_KDF_SCHEME;
+
+/* TPMT_KDF_SCHEME Structure */
+struct TPMT_KDF_SCHEME
+{
+ TPMI_ALG_KDF scheme;
+ TPMU_KDF_SCHEME details;
+};
+typedef struct TPMT_KDF_SCHEME TPMT_KDF_SCHEME;
+
+/* TPMS_ECC_PARMS Structure */
+struct TPMS_ECC_PARMS
+{
+ TPMT_SYM_DEF_OBJECT symmetric;
+ TPMT_ECC_SCHEME scheme;
+ TPMI_ECC_CURVE curveID;
+ TPMT_KDF_SCHEME kdf;
+};
+typedef struct TPMS_ECC_PARMS TPMS_ECC_PARMS;
+
+/* TPMT_ASYM_SCHEME Structure */
+struct TPMT_ASYM_SCHEME
+{
+ TPMI_ALG_ASYM_SCHEME scheme;
+ TPMU_ASYM_SCHEME details;
+};
+typedef struct TPMT_ASYM_SCHEME TPMT_ASYM_SCHEME;
+
+/* TPMS_ASYM_PARMS Structure */
+struct TPMS_ASYM_PARMS
+{
+ TPMT_SYM_DEF_OBJECT symmetric;
+ TPMT_ASYM_SCHEME scheme;
+};
+typedef struct TPMS_ASYM_PARMS TPMS_ASYM_PARMS;
+
+/* TPMU_PUBLIC_PARMS Union */
+union TPMU_PUBLIC_PARMS
+{
+ TPMS_KEYEDHASH_PARMS keyedHashDetail;
+ TPMS_SYMCIPHER_PARMS symDetail;
+ TPMS_RSA_PARMS rsaDetail;
+ TPMS_ECC_PARMS eccDetail;
+ TPMS_ASYM_PARMS asymDetail;
+};
+typedef union TPMU_PUBLIC_PARMS TPMU_PUBLIC_PARMS;
+
+/* TPMT_PUBLIC_PARMS Structure */
+struct TPMT_PUBLIC_PARMS {
+ TPMI_ALG_PUBLIC type;
+ TPMU_PUBLIC_PARMS parameters;
+};
+typedef struct TPMT_PUBLIC_PARMS TPMT_PUBLIC_PARMS;
+
+/* TPM2B_PUBLIC_KEY_RSA Structure */
+struct TPM2B_PUBLIC_KEY_RSA
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_RSA_KEY_BYTES];
+};
+typedef struct TPM2B_PUBLIC_KEY_RSA TPM2B_PUBLIC_KEY_RSA;
+
+/* TPM2B_ECC_PARAMETER Structure */
+struct TPM2B_ECC_PARAMETER
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_ECC_KEY_BYTES];
+};
+typedef struct TPM2B_ECC_PARAMETER TPM2B_ECC_PARAMETER;
+
+/* TPMS_ECC_POINT Structure */
+struct TPMS_ECC_POINT
+{
+ TPM2B_ECC_PARAMETER x;
+ TPM2B_ECC_PARAMETER y;
+};
+typedef struct TPMS_ECC_POINT TPMS_ECC_POINT;
+
+/* TPMU_ENCRYPTED_SECRET Union */
+union TPMU_ENCRYPTED_SECRET
+{
+ grub_uint8_t ecc[sizeof(TPMS_ECC_POINT)];
+ grub_uint8_t rsa[TPM_MAX_RSA_KEY_BYTES];
+ grub_uint8_t symmetric[sizeof(TPM2B_DIGEST)];
+ grub_uint8_t keyedHash[sizeof(TPM2B_DIGEST)];
+};
+typedef union TPMU_ENCRYPTED_SECRET TPMU_ENCRYPTED_SECRET;
+
+/* TPM2B_ENCRYPTED_SECRET Structure */
+struct TPM2B_ENCRYPTED_SECRET
+{
+ grub_uint16_t size;
+ grub_uint8_t secret[sizeof(TPMU_ENCRYPTED_SECRET)];
+};
+typedef struct TPM2B_ENCRYPTED_SECRET TPM2B_ENCRYPTED_SECRET;
+
+/* TPMU_PUBLIC_ID Union */
+union TPMU_PUBLIC_ID
+{
+ TPM2B_DIGEST keyedHash;
+ TPM2B_DIGEST sym;
+ TPM2B_PUBLIC_KEY_RSA rsa;
+ TPMS_ECC_POINT ecc;
+};
+typedef union TPMU_PUBLIC_ID TPMU_PUBLIC_ID;
+
+/* TPMT_PUBLIC Structure */
+struct TPMT_PUBLIC
+{
+ TPMI_ALG_PUBLIC type;
+ TPMI_ALG_HASH nameAlg;
+ TPMA_OBJECT objectAttributes;
+ TPM2B_DIGEST authPolicy;
+ TPMU_PUBLIC_PARMS parameters;
+ TPMU_PUBLIC_ID unique;
+};
+typedef struct TPMT_PUBLIC TPMT_PUBLIC;
+
+/* TPM2B_PUBLIC Structure */
+struct TPM2B_PUBLIC
+{
+ grub_uint16_t size;
+ TPMT_PUBLIC publicArea;
+};
+typedef struct TPM2B_PUBLIC TPM2B_PUBLIC;
+
+/* TPMT_HA Structure */
+struct TPMT_HA
+{
+ TPMI_ALG_HASH hashAlg;
+ TPMU_HA digest;
+};
+typedef struct TPMT_HA TPMT_HA;
+
+/* TPM2B_DATA Structure */
+struct TPM2B_DATA
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[sizeof(TPMT_HA)];
+};
+typedef struct TPM2B_DATA TPM2B_DATA;
+
+/* TPMA_LOCALITY Structure */
+struct TPMA_LOCALITY
+{
+ unsigned char TPM_LOC_ZERO:1;
+ unsigned char TPM_LOC_ONE:1;
+ unsigned char TPM_LOC_TWO:1;
+ unsigned char TPM_LOC_THREE:1;
+ unsigned char TPM_LOC_FOUR:1;
+ unsigned char Extended:3;
+};
+typedef struct TPMA_LOCALITY TPMA_LOCALITY;
+
+/* TPMU_NAME Union */
+union TPMU_NAME
+{
+ TPMT_HA digest;
+ TPM_HANDLE handle;
+};
+typedef union TPMU_NAME TPMU_NAME;
+
+/* TPM2B_NAME Structure */
+struct TPM2B_NAME
+{
+ grub_uint16_t size;
+ grub_uint8_t name[sizeof(TPMU_NAME)];
+};
+typedef struct TPM2B_NAME TPM2B_NAME;
+
+/* TPMS_CREATION_DATA Structure */
+struct TPMS_CREATION_DATA
+{
+ TPML_PCR_SELECTION pcrSelect;
+ TPM2B_DIGEST pcrDigest;
+ TPMA_LOCALITY locality;
+ TPM_ALG_ID parentNameAlg;
+ TPM2B_NAME parentName;
+ TPM2B_NAME parentQualifiedName;
+ TPM2B_DATA outsideInfo;
+};
+typedef struct TPMS_CREATION_DATA TPMS_CREATION_DATA;
+
+/* TPM2B_CREATION_DATA Structure */
+struct TPM2B_CREATION_DATA
+{
+ grub_uint16_t size;
+ TPMS_CREATION_DATA creationData;
+};
+typedef struct TPM2B_CREATION_DATA TPM2B_CREATION_DATA;
+
+/* TPMT_SYM_DEF Structure */
+struct TPMT_SYM_DEF
+{
+ TPMI_ALG_SYM algorithm;
+ TPMU_SYM_KEY_BITS keyBits;
+ TPMU_SYM_MODE mode;
+};
+typedef struct TPMT_SYM_DEF TPMT_SYM_DEF;
+
+/* TPM2B_MAX_BUFFER Structure */
+struct TPM2B_MAX_BUFFER
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_DIGEST_BUFFER];
+};
+typedef struct TPM2B_MAX_BUFFER TPM2B_MAX_BUFFER;
+
+/* TPMT_TK_HASHCHECK Structure */
+struct TPMT_TK_HASHCHECK
+{
+ TPM_ST tag;
+ TPMI_RH_HIERARCHY hierarchy;
+ TPM2B_DIGEST digest;
+};
+typedef struct TPMT_TK_HASHCHECK TPMT_TK_HASHCHECK;
+
+/* TPM2B_SYM_KEY Structure */
+struct TPM2B_SYM_KEY
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_SYM_KEY_BYTES];
+};
+typedef struct TPM2B_SYM_KEY TPM2B_SYM_KEY;
+
+/* TPM2B_PRIVATE_KEY_RSA Structure */
+struct TPM2B_PRIVATE_KEY_RSA
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_RSA_KEY_BYTES/2];
+};
+typedef struct TPM2B_PRIVATE_KEY_RSA TPM2B_PRIVATE_KEY_RSA;
+
+/* TPM2B_PRIVATE_VENDOR_SPECIFIC Structure */
+struct TPM2B_PRIVATE_VENDOR_SPECIFIC
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_PRIVATE_VENDOR_SPECIFIC_BYTES];
+};
+typedef struct TPM2B_PRIVATE_VENDOR_SPECIFIC TPM2B_PRIVATE_VENDOR_SPECIFIC;
+
+/* TPM2B_PRIVATE_VENDOR_SPECIFIC Union */
+union TPMU_SENSITIVE_COMPOSITE
+{
+ TPM2B_PRIVATE_KEY_RSA rsa;
+ TPM2B_ECC_PARAMETER ecc;
+ TPM2B_SENSITIVE_DATA bits;
+ TPM2B_SYM_KEY sym;
+ TPM2B_PRIVATE_VENDOR_SPECIFIC any;
+};
+typedef union TPMU_SENSITIVE_COMPOSITE TPMU_SENSITIVE_COMPOSITE;
+
+/* TPMT_SENSITIVE Structure */
+struct TPMT_SENSITIVE
+{
+ TPMI_ALG_PUBLIC sensitiveType;
+ TPM2B_AUTH authValue;
+ TPM2B_DIGEST seedValue;
+ TPMU_SENSITIVE_COMPOSITE sensitive;
+};
+typedef struct TPMT_SENSITIVE TPMT_SENSITIVE;
+
+/* TPM2B_SENSITIVE Structure */
+struct TPM2B_SENSITIVE
+{
+ grub_uint16_t size;
+ TPMT_SENSITIVE sensitiveArea;
+};
+typedef struct TPM2B_SENSITIVE TPM2B_SENSITIVE;
+
+/* _PRIVATE Structure */
+struct _PRIVATE
+{
+ TPM2B_DIGEST integrityOuter;
+ TPM2B_DIGEST integrityInner;
+ TPM2B_SENSITIVE sensitive;
+};
+typedef struct _PRIVATE _PRIVATE;
+
+/* TPM2B_PRIVATE Structure */
+struct TPM2B_PRIVATE
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[sizeof(_PRIVATE)];
+};
+typedef struct TPM2B_PRIVATE TPM2B_PRIVATE;
+
+/* TPML_DIGEST_VALUES Structure */
+struct TPML_DIGEST_VALUES
+{
+ grub_uint16_t count;
+ TPMT_HA digests[TPM_NUM_PCR_BANKS];
+};
+typedef struct TPML_DIGEST_VALUES TPML_DIGEST_VALUES;
+
+/* TPM2B_MAX_NV_BUFFER Structure */
+struct TPM2B_MAX_NV_BUFFER
+{
+ grub_uint16_t size;
+ grub_uint8_t buffer[TPM_MAX_NV_BUFFER_SIZE];
+};
+typedef struct TPM2B_MAX_NV_BUFFER TPM2B_MAX_NV_BUFFER;
+
+/* TPMS_NV_PUBLIC Structure */
+struct TPMS_NV_PUBLIC
+{
+ TPMI_RH_NV_INDEX nvIndex;
+ TPMI_ALG_HASH nameAlg;
+ TPMA_NV attributes;
+ TPM2B_DIGEST authPolicy;
+ grub_uint16_t dataSize;
+};
+typedef struct TPMS_NV_PUBLIC TPMS_NV_PUBLIC;
+
+/* TPM2B_NV_PUBLIC Structure */
+struct TPM2B_NV_PUBLIC
+{
+ grub_uint16_t size;
+ TPMS_NV_PUBLIC nvPublic;
+};
+typedef struct TPM2B_NV_PUBLIC TPM2B_NV_PUBLIC;
+
+/* TPMT_TK_CREATION Structure */
+struct TPMT_TK_CREATION
+{
+ TPM_ST tag;
+ TPMI_RH_HIERARCHY hierarchy;
+ TPM2B_DIGEST digest;
+};
+typedef struct TPMT_TK_CREATION TPMT_TK_CREATION;
+
+/* TPMS_EMPTY Structure */
+struct TPMS_EMPTY {
+ grub_uint8_t empty[1]; /* a structure with no member */
+};
+typedef struct TPMS_EMPTY TPMS_EMPTY;
+
+/* TPMS_SIGNATURE_RSA Structure */
+struct TPMS_SIGNATURE_RSA {
+ TPMI_ALG_HASH hash;
+ TPM2B_PUBLIC_KEY_RSA sig;
+};
+typedef struct TPMS_SIGNATURE_RSA TPMS_SIGNATURE_RSA;
+
+/* Definition of Types for RSA Signature */
+typedef TPMS_SIGNATURE_RSA TPMS_SIGNATURE_RSASSA;
+typedef TPMS_SIGNATURE_RSA TPMS_SIGNATURE_RSAPSS;
+
+/* TPMS_SIGNATURE_ECC Structure */
+struct TPMS_SIGNATURE_ECC {
+ TPMI_ALG_HASH hash;
+ TPM2B_ECC_PARAMETER signatureR;
+ TPM2B_ECC_PARAMETER signatureS;
+};
+typedef struct TPMS_SIGNATURE_ECC TPMS_SIGNATURE_ECC;
+
+/* Definition of Types for ECC TPMS_SIGNATURE_ECC */
+typedef TPMS_SIGNATURE_ECC TPMS_SIGNATURE_ECDSA;
+typedef TPMS_SIGNATURE_ECC TPMS_SIGNATURE_ECDAA;
+typedef TPMS_SIGNATURE_ECC TPMS_SIGNATURE_SM2;
+typedef TPMS_SIGNATURE_ECC TPMS_SIGNATURE_ECSCHNORR;
+
+/* TPMU_SIGNATURE Structure */
+union TPMU_SIGNATURE {
+ TPMS_SIGNATURE_RSASSA rsassa;
+ TPMS_SIGNATURE_RSAPSS rsapss;
+ TPMS_SIGNATURE_ECDSA ecdsa;
+ TPMS_SIGNATURE_ECDAA ecdaa;
+ TPMS_SIGNATURE_SM2 sm2;
+ TPMS_SIGNATURE_ECSCHNORR ecschnorr;
+ TPMT_HA hmac;
+ TPMS_SCHEME_HASH any;
+ TPMS_EMPTY null;
+};
+typedef union TPMU_SIGNATURE TPMU_SIGNATURE;
+
+/* TPMT_SIGNATURE Structure */
+struct TPMT_SIGNATURE {
+ TPMI_ALG_SIG_SCHEME sigAlg;
+ TPMU_SIGNATURE signature;
+};
+typedef struct TPMT_SIGNATURE TPMT_SIGNATURE;
+
+static inline TPMI_ALG_HASH
+TPMT_SIGNATURE_get_hash_alg (TPMT_SIGNATURE *sig)
+{
+ switch (sig->sigAlg)
+ {
+ case TPM_ALG_RSASSA:
+ return sig->signature.rsassa.hash;
+ case TPM_ALG_RSAPSS:
+ return sig->signature.rsapss.hash;
+ case TPM_ALG_ECDSA:
+ return sig->signature.ecdsa.hash;
+ case TPM_ALG_ECDAA:
+ return sig->signature.ecdaa.hash;
+ case TPM_ALG_SM2:
+ return sig->signature.sm2.hash;
+ case TPM_ALG_ECSCHNORR:
+ return sig->signature.ecschnorr.hash;
+ case TPM_ALG_HMAC:
+ return sig->signature.hmac.hashAlg;
+ default:
+ break;
+ }
+
+ return TPM_ALG_NULL;
+}
+
+/* TPMT_TK_VERIFIED Structure */
+struct TPMT_TK_VERIFIED {
+ TPM_ST tag;
+ TPMI_RH_HIERARCHY hierarchy;
+ TPM2B_DIGEST digest;
+};
+typedef struct TPMT_TK_VERIFIED TPMT_TK_VERIFIED;
+
+#endif /* ! GRUB_TPM2_INTERNAL_STRUCTS_HEADER */
diff --git a/include/grub/tpm2/internal/types.h b/include/grub/tpm2/internal/types.h
new file mode 100644
index 000000000..7d754394d
--- /dev/null
+++ b/include/grub/tpm2/internal/types.h
@@ -0,0 +1,403 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_INTERNAL_TYPES_HEADER
+#define GRUB_TPM2_INTERNAL_TYPES_HEADER 1
+
+#include <grub/types.h>
+
+/* TPM2_RC Constants */
+typedef grub_uint32_t TPM_RC;
+
+#define TPM_RC_1 ((TPM_RC) 0x100)
+#define TPM_RC_2 ((TPM_RC) 0x200)
+#define TPM_RC_3 ((TPM_RC) 0x300)
+#define TPM_RC_4 ((TPM_RC) 0x400)
+#define TPM_RC_5 ((TPM_RC) 0x500)
+#define TPM_RC_6 ((TPM_RC) 0x600)
+#define TPM_RC_7 ((TPM_RC) 0x700)
+#define TPM_RC_8 ((TPM_RC) 0x800)
+#define TPM_RC_9 ((TPM_RC) 0x900)
+#define TPM_RC_A ((TPM_RC) 0xA00)
+#define TPM_RC_ASYMMETRIC ((TPM_RC) 0x081)
+#define TPM_RC_ATTRIBUTES ((TPM_RC) 0x082)
+#define TPM_RC_AUTH_CONTEXT ((TPM_RC) 0x145)
+#define TPM_RC_AUTH_FAIL ((TPM_RC) 0x08E)
+#define TPM_RC_AUTH_MISSING ((TPM_RC) 0x125)
+#define TPM_RC_AUTHSIZE ((TPM_RC) 0x144)
+#define TPM_RC_AUTH_TYPE ((TPM_RC) 0x124)
+#define TPM_RC_AUTH_UNAVAILABLE ((TPM_RC) 0x12F)
+#define TPM_RC_B ((TPM_RC) 0xB00)
+#define TPM_RC_BAD_AUTH ((TPM_RC) 0x0A2)
+#define TPM_RC_BAD_CONTEXT ((TPM_RC) 0x150)
+#define TPM_RC_BAD_TAG ((TPM_RC) 0x01E)
+#define TPM_RC_BINDING ((TPM_RC) 0x0A5)
+#define TPM_RC_C ((TPM_RC) 0xC00)
+#define TPM_RC_CANCELED ((TPM_RC) 0x909)
+#define TPM_RC_COMMAND_CODE ((TPM_RC) 0x143)
+#define TPM_RC_COMMAND_SIZE ((TPM_RC) 0x142)
+#define TPM_RC_CONTEXT_GAP ((TPM_RC) 0x901)
+#define TPM_RC_CPHASH ((TPM_RC) 0x151)
+#define TPM_RC_CURVE ((TPM_RC) 0x0A6)
+#define TPM_RC_D ((TPM_RC) 0xD00)
+#define TPM_RC_DISABLED ((TPM_RC) 0x120)
+#define TPM_RC_E ((TPM_RC) 0xE00)
+#define TPM_RC_ECC_POINT ((TPM_RC) 0x0A7)
+#define TPM_RC_EXCLUSIVE ((TPM_RC) 0x121)
+#define TPM_RC_EXPIRED ((TPM_RC) 0x0A3)
+#define TPM_RC_F ((TPM_RC) 0xF00)
+#define TPM_RC_FAILURE ((TPM_RC) 0x101)
+#define TPM_RC_H ((TPM_RC) 0x000)
+#define TPM_RC_HANDLE ((TPM_RC) 0x08B)
+#define TPM_RC_HASH ((TPM_RC) 0x083)
+#define TPM_RC_HIERARCHY ((TPM_RC) 0x085)
+#define TPM_RC_HMAC ((TPM_RC) 0x119)
+#define TPM_RC_INITIALIZE ((TPM_RC) 0x100)
+#define TPM_RC_INSUFFICIENT ((TPM_RC) 0x09A)
+#define TPM_RC_INTEGRITY ((TPM_RC) 0x09F)
+#define TPM_RC_KDF ((TPM_RC) 0x08C)
+#define TPM_RC_KEY ((TPM_RC) 0x09C)
+#define TPM_RC_KEY_SIZE ((TPM_RC) 0x087)
+#define TPM_RC_LOCALITY ((TPM_RC) 0x907)
+#define TPM_RC_LOCKOUT ((TPM_RC) 0x921)
+#define TPM_RC_MEMORY ((TPM_RC) 0x904)
+#define TPM_RC_MGF ((TPM_RC) 0x088)
+#define TPM_RC_MODE ((TPM_RC) 0x089)
+#define TPM_RC_NEEDS_TEST ((TPM_RC) 0x153)
+#define TPM_RC_N_MASK ((TPM_RC) 0xF00)
+#define TPM_RC_NONCE ((TPM_RC) 0x08F)
+#define TPM_RC_NO_RESULT ((TPM_RC) 0x154)
+#define TPM_RC_NOT_USED ((TPM_RC) 0x97F)
+#define TPM_RC_NV_AUTHORIZATION ((TPM_RC) 0x149)
+#define TPM_RC_NV_DEFINED ((TPM_RC) 0x14C)
+#define TPM_RC_NV_LOCKED ((TPM_RC) 0x148)
+#define TPM_RC_NV_RANGE ((TPM_RC) 0x146)
+#define TPM_RC_NV_RATE ((TPM_RC) 0x920)
+#define TPM_RC_NV_SIZE ((TPM_RC) 0x147)
+#define TPM_RC_NV_SPACE ((TPM_RC) 0x14B)
+#define TPM_RC_NV_UNAVAILABLE ((TPM_RC) 0x923)
+#define TPM_RC_NV_UNINITIALIZED ((TPM_RC) 0x14A)
+#define TPM_RC_OBJECT_HANDLES ((TPM_RC) 0x906)
+#define TPM_RC_OBJECT_MEMORY ((TPM_RC) 0x902)
+#define TPM_RC_P ((TPM_RC) 0x040)
+#define TPM_RC_PARENT ((TPM_RC) 0x152)
+#define TPM_RC_PCR ((TPM_RC) 0x127)
+#define TPM_RC_PCR_CHANGED ((TPM_RC) 0x128)
+#define TPM_RC_POLICY ((TPM_RC) 0x126)
+#define TPM_RC_POLICY_CC ((TPM_RC) 0x0A4)
+#define TPM_RC_POLICY_FAIL ((TPM_RC) 0x09D)
+#define TPM_RC_PP ((TPM_RC) 0x090)
+#define TPM_RC_PRIVATE ((TPM_RC) 0x10B)
+#define TPM_RC_RANGE ((TPM_RC) 0x08D)
+#define TPM_RC_REBOOT ((TPM_RC) 0x130)
+#define TPM_RC_REFERENCE_H0 ((TPM_RC) 0x910)
+#define TPM_RC_REFERENCE_H1 ((TPM_RC) 0x911)
+#define TPM_RC_REFERENCE_H2 ((TPM_RC) 0x912)
+#define TPM_RC_REFERENCE_H3 ((TPM_RC) 0x913)
+#define TPM_RC_REFERENCE_H4 ((TPM_RC) 0x914)
+#define TPM_RC_REFERENCE_H5 ((TPM_RC) 0x915)
+#define TPM_RC_REFERENCE_H6 ((TPM_RC) 0x916)
+#define TPM_RC_REFERENCE_S0 ((TPM_RC) 0x918)
+#define TPM_RC_REFERENCE_S1 ((TPM_RC) 0x919)
+#define TPM_RC_REFERENCE_S2 ((TPM_RC) 0x91A)
+#define TPM_RC_REFERENCE_S3 ((TPM_RC) 0x91B)
+#define TPM_RC_REFERENCE_S4 ((TPM_RC) 0x91C)
+#define TPM_RC_REFERENCE_S5 ((TPM_RC) 0x91D)
+#define TPM_RC_REFERENCE_S6 ((TPM_RC) 0x91E)
+#define TPM_RC_RESERVED_BITS ((TPM_RC) 0x0A1)
+#define TPM_RC_RETRY ((TPM_RC) 0x922)
+#define TPM_RC_S ((TPM_RC) 0x800)
+#define TPM_RC_SCHEME ((TPM_RC) 0x092)
+#define TPM_RC_SELECTOR ((TPM_RC) 0x098)
+#define TPM_RC_SENSITIVE ((TPM_RC) 0x155)
+#define TPM_RC_SEQUENCE ((TPM_RC) 0x103)
+#define TPM_RC_SESSION_HANDLES ((TPM_RC) 0x905)
+#define TPM_RC_SESSION_MEMORY ((TPM_RC) 0x903)
+#define TPM_RC_SIGNATURE ((TPM_RC) 0x09B)
+#define TPM_RC_SIZE ((TPM_RC) 0x095)
+#define TPM_RC_SUCCESS ((TPM_RC) 0x000)
+#define TPM_RC_SYMMETRIC ((TPM_RC) 0x096)
+#define TPM_RC_TAG ((TPM_RC) 0x097)
+#define TPM_RC_TESTING ((TPM_RC) 0x90A)
+#define TPM_RC_TICKET ((TPM_RC) 0x0A0)
+#define TPM_RC_TOO_MANY_CONTEXTS ((TPM_RC) 0x12E)
+#define TPM_RC_TYPE ((TPM_RC) 0x08A)
+#define TPM_RC_UNBALANCED ((TPM_RC) 0x131)
+#define TPM_RC_UPGRADE ((TPM_RC) 0x12D)
+#define TPM_RC_VALUE ((TPM_RC) 0x084)
+#define TPM_RC_YIELDED ((TPM_RC) 0x908)
+
+/* TPMA_NV Constants */
+typedef grub_uint32_t TPMA_NV;
+
+#define TPMA_NV_PPWRITE ((TPMA_NV) 0x00000001)
+#define TPMA_NV_OWNERWRITE ((TPMA_NV) 0x00000002)
+#define TPMA_NV_AUTHWRITE ((TPMA_NV) 0x00000004)
+#define TPMA_NV_POLICYWRITE ((TPMA_NV) 0x00000008)
+#define TPMA_NV_TPM2_NT_MASK ((TPMA_NV) 0x000000F0)
+#define TPMA_NV_TPM2_NT_SHIFT (4)
+#define TPMA_NV_RESERVED1_MASK ((TPMA_NV) 0x00000300)
+#define TPMA_NV_POLICY_DELETE ((TPMA_NV) 0x00000400)
+#define TPMA_NV_WRITELOCKED ((TPMA_NV) 0x00000800)
+#define TPMA_NV_WRITEALL ((TPMA_NV) 0x00001000)
+#define TPMA_NV_WRITEDEFINE ((TPMA_NV) 0x00002000)
+#define TPMA_NV_WRITE_STCLEAR ((TPMA_NV) 0x00004000)
+#define TPMA_NV_GLOBALLOCK ((TPMA_NV) 0x00008000)
+#define TPMA_NV_PPREAD ((TPMA_NV) 0x00010000)
+#define TPMA_NV_OWNERREAD ((TPMA_NV) 0x00020000)
+#define TPMA_NV_AUTHREAD ((TPMA_NV) 0x00040000)
+#define TPMA_NV_POLICYREAD ((TPMA_NV) 0x00080000)
+#define TPMA_NV_RESERVED2_MASK ((TPMA_NV) 0x01F00000)
+#define TPMA_NV_NO_DA ((TPMA_NV) 0x02000000)
+#define TPMA_NV_ORDERLY ((TPMA_NV) 0x04000000)
+#define TPMA_NV_CLEAR_STCLEAR ((TPMA_NV) 0x08000000)
+#define TPMA_NV_READLOCKED ((TPMA_NV) 0x10000000)
+#define TPMA_NV_WRITTEN ((TPMA_NV) 0x20000000)
+#define TPMA_NV_PLATFORMCREATE ((TPMA_NV) 0x40000000)
+#define TPMA_NV_READ_STCLEAR ((TPMA_NV) 0x80000000)
+
+/* TPM_ALG_ID Constants */
+typedef grub_uint16_t TPM_ALG_ID;
+
+#define TPM_ALG_ERROR ((TPM_ALG_ID) 0x0000)
+#define TPM_ALG_AES ((TPM_ALG_ID) 0x0006)
+#define TPM_ALG_CAMELLIA ((TPM_ALG_ID) 0x0026)
+#define TPM_ALG_CBC ((TPM_ALG_ID) 0x0042)
+#define TPM_ALG_CFB ((TPM_ALG_ID) 0x0043)
+#define TPM_ALG_ECB ((TPM_ALG_ID) 0x0044)
+#define TPM_ALG_ECC ((TPM_ALG_ID) 0x0023)
+#define TPM_ALG_ECDAA ((TPM_ALG_ID) 0x001A)
+#define TPM_ALG_ECDSA ((TPM_ALG_ID) 0x0018)
+#define TPM_ALG_ECSCHNORR ((TPM_ALG_ID) 0x001C)
+#define TPM_ALG_HMAC ((TPM_ALG_ID) 0x0005)
+#define TPM_ALG_KDF1_SP800_108 ((TPM_ALG_ID) 0x0022)
+#define TPM_ALG_KDF1_SP800_56A ((TPM_ALG_ID) 0x0020)
+#define TPM_ALG_KDF2 ((TPM_ALG_ID) 0x0021)
+#define TPM_ALG_KEYEDHASH ((TPM_ALG_ID) 0x0008)
+#define TPM_ALG_MGF1 ((TPM_ALG_ID) 0x0007)
+#define TPM_ALG_NULL ((TPM_ALG_ID) 0x0010)
+#define TPM_ALG_RSA ((TPM_ALG_ID) 0x0001)
+#define TPM_ALG_RSASSA ((TPM_ALG_ID) 0x0014)
+#define TPM_ALG_RSAPSS ((TPM_ALG_ID) 0x0016)
+#define TPM_ALG_SHA1 ((TPM_ALG_ID) 0x0004)
+#define TPM_ALG_SHA256 ((TPM_ALG_ID) 0x000B)
+#define TPM_ALG_SHA384 ((TPM_ALG_ID) 0x000C)
+#define TPM_ALG_SHA512 ((TPM_ALG_ID) 0x000D)
+#define TPM_ALG_SM2 ((TPM_ALG_ID) 0x001B)
+#define TPM_ALG_SM3_256 ((TPM_ALG_ID) 0x0012)
+#define TPM_ALG_SM4 ((TPM_ALG_ID) 0x0013)
+#define TPM_ALG_SYMCIPHER ((TPM_ALG_ID) 0x0025)
+#define TPM_ALG_XOR ((TPM_ALG_ID) 0x000A)
+
+/* TPM_CAP Constants */
+typedef grub_uint32_t TPM_CAP;
+
+#define TPM_CAP_FIRST ((TPM_CAP) 0x00000000)
+#define TPM_CAP_ALGS ((TPM_CAP) 0x00000000)
+#define TPM_CAP_HANDLES ((TPM_CAP) 0x00000001)
+#define TPM_CAP_COMMANDS ((TPM_CAP) 0x00000002)
+#define TPM_CAP_PP_COMMANDS ((TPM_CAP) 0x00000003)
+#define TPM_CAP_AUDIT_COMMANDS ((TPM_CAP) 0x00000004)
+#define TPM_CAP_PCRS ((TPM_CAP) 0x00000005)
+#define TPM_CAP_TPM_PROPERTIES ((TPM_CAP) 0x00000006)
+#define TPM_CAP_PCR_PROPERTIES ((TPM_CAP) 0x00000007)
+#define TPM_CAP_ECC_CURVES ((TPM_CAP) 0x00000008)
+#define TPM_CAP_LAST ((TPM_CAP) 0x00000008)
+#define TPM_CAP_VENDOR_PROPERTY ((TPM_CAP) 0x00000100)
+
+/* TPM_PT Constants */
+typedef grub_uint32_t TPM_PT;
+
+#define TPM_PT_NONE ((TPM_PT) 0x00000000)
+#define PT_GROUP ((TPM_PT) 0x00000100)
+#define PT_FIXED ((TPM_PT) (PT_GROUP * 1))
+#define TPM_PT_FAMILY_INDICATOR ((TPM_PT) (PT_FIXED + 0))
+#define TPM_PT_LEVEL ((TPM_PT) (PT_FIXED + 1))
+#define TPM_PT_REVISION ((TPM_PT) (PT_FIXED + 2))
+#define TPM_PT_DAY_OF_YEAR ((TPM_PT) (PT_FIXED + 3))
+#define TPM_PT_YEAR ((TPM_PT) (PT_FIXED + 4))
+#define TPM_PT_PCR_COUNT ((TPM_PT) (PT_FIXED + 18))
+
+/* TPM_SE Constants */
+typedef grub_uint8_t TPM_SE;
+
+#define TPM_SE_HMAC ((TPM_SE) 0x00)
+#define TPM_SE_POLICY ((TPM_SE) 0x01)
+#define TPM_SE_TRIAL ((TPM_SE) 0x03)
+
+/* TPMI_YES_NO Constants */
+typedef grub_uint8_t TPMI_YES_NO;
+
+#define TPM_NO ((TPMI_YES_NO)0)
+#define TPM_YES ((TPMI_YES_NO)1)
+
+/* TPM_ST Constants */
+typedef grub_uint16_t TPM_ST;
+typedef TPM_ST TPMI_ST_COMMAND_TAG;
+
+#define TPM_ST_NO_SESSIONS ((TPMI_ST_COMMAND_TAG) 0x8001)
+#define TPM_ST_SESSIONS ((TPMI_ST_COMMAND_TAG) 0x8002)
+
+/* TPM_HANDLE Types */
+typedef grub_uint32_t TPM_HANDLE;
+
+typedef TPM_HANDLE TPMI_RH_HIERARCHY;
+typedef TPM_HANDLE TPMI_RH_LOCKOUT;
+typedef TPM_HANDLE TPMI_SH_AUTH_SESSION;
+typedef TPM_HANDLE TPMI_DH_CONTEXT;
+typedef TPM_HANDLE TPMI_DH_OBJECT;
+typedef TPM_HANDLE TPMI_DH_ENTITY;
+typedef TPM_HANDLE TPMI_SH_POLICY;
+typedef TPM_HANDLE TPMI_DH_PCR;
+typedef TPM_HANDLE TPMI_RH_NV_AUTH;
+typedef TPM_HANDLE TPMI_RH_NV_INDEX;
+
+/* TPM_HT Constants */
+typedef grub_uint8_t TPM_HT;
+#define TPM_HT_PERMANENT ((TPM_HT) 0x40)
+#define TPM_HT_PERSISTENT ((TPM_HT) 0x81)
+
+/* TPM_RH Constants */
+typedef TPM_HANDLE TPM_RH;
+
+#define TPM_RH_FIRST ((TPM_RH) 0x40000000)
+#define TPM_RH_SRK ((TPM_RH) 0x40000000)
+#define TPM_RH_OWNER ((TPM_RH) 0x40000001)
+#define TPM_RH_REVOKE ((TPM_RH) 0x40000002)
+#define TPM_RH_TRANSPORT ((TPM_RH) 0x40000003)
+#define TPM_RH_OPERATOR ((TPM_RH) 0x40000004)
+#define TPM_RH_ADMIN ((TPM_RH) 0x40000005)
+#define TPM_RH_EK ((TPM_RH) 0x40000006)
+#define TPM_RH_NULL ((TPM_RH) 0x40000007)
+#define TPM_RH_UNASSIGNED ((TPM_RH) 0x40000008)
+#define TPM_RS_PW ((TPM_RH) 0x40000009)
+#define TPM_RH_LOCKOUT ((TPM_RH) 0x4000000A)
+#define TPM_RH_ENDORSEMENT ((TPM_RH) 0x4000000B)
+#define TPM_RH_PLATFORM ((TPM_RH) 0x4000000C)
+#define TPM_RH_PLATFORM_NV ((TPM_RH) 0x4000000D)
+#define TPM_RH_AUTH_00 ((TPM_RH) 0x40000010)
+#define TPM_RH_AUTH_FF ((TPM_RH) 0x4000010F)
+#define TPM_RH_LAST ((TPM_RH) 0x4000010F)
+
+/* TPM_HC Constants */
+typedef TPM_HANDLE TPM_HC;
+#define TPM_HR_HANDLE_MASK ((TPM_HC) 0x00FFFFFF)
+#define TPM_HR_RANGE_MASK ((TPM_HC) 0xFF000000)
+#define TPM_HR_SHIFT ((TPM_HC) 24)
+#define TPM_HR_PERSISTENT ((TPM_HC) (TPM_HT_PERSISTENT << TPM_HR_SHIFT))
+#define TPM_HR_PERMANENT ((TPM_HC) (TPM_HT_PERMANENT << TPM_HR_SHIFT))
+#define TPM_PERSISTENT_FIRST ((TPM_HC) (TPM_HR_PERSISTENT + 0))
+#define TPM_PERSISTENT_LAST ((TPM_HC) (TPM_PERSISTENT_FIRST + 0x00FFFFFF))
+#define TPM_PERMANENT_FIRST ((TPM_HC) TPM_RH_FIRST)
+#define TPM_PERMANENT_LAST ((TPM_HC) TPM_RH_LAST)
+
+/* TPM Handle Type Checks */
+#define TPM_HT_IS_PERMANENT(HANDLE) (((HANDLE) >> TPM_HR_SHIFT) == TPM_HT_PERMANENT)
+#define TPM_HT_IS_PERSISTENT(HANDLE) (((HANDLE) >> TPM_HR_SHIFT) == TPM_HT_PERSISTENT)
+
+/* TPM_ECC_CURVE Constants */
+typedef grub_uint16_t TPM_ECC_CURVE;
+
+#define TPM_ECC_NONE ((TPM_ECC_CURVE) 0x0000)
+#define TPM_ECC_NIST_P192 ((TPM_ECC_CURVE) 0x0001)
+#define TPM_ECC_NIST_P224 ((TPM_ECC_CURVE) 0x0002)
+#define TPM_ECC_NIST_P256 ((TPM_ECC_CURVE) 0x0003)
+#define TPM_ECC_NIST_P384 ((TPM_ECC_CURVE) 0x0004)
+#define TPM_ECC_NIST_P521 ((TPM_ECC_CURVE) 0x0005)
+#define TPM_ECC_BN_P256 ((TPM_ECC_CURVE) 0x0010)
+#define TPM_ECC_BN_P638 ((TPM_ECC_CURVE) 0x0011)
+#define TPM_ECC_SM2_P256 ((TPM_ECC_CURVE) 0x0020)
+
+/* TPM_CC Constants */
+typedef grub_uint32_t TPM_CC;
+
+#define TPM_CC_EvictControl ((TPM_CC) 0x00000120)
+#define TPM_CC_CreatePrimary ((TPM_CC) 0x00000131)
+#define TPM_CC_Create ((TPM_CC) 0x00000153)
+#define TPM_CC_FlushContext ((TPM_CC) 0x00000165)
+#define TPM_CC_ReadPublic ((TPM_CC) 0x00000173)
+#define TPM_CC_StartAuthSession ((TPM_CC) 0x00000176)
+#define TPM_CC_PolicyPCR ((TPM_CC) 0x0000017f)
+#define TPM_CC_NV_Read ((TPM_CC) 0x0000014e)
+#define TPM_CC_NV_ReadPublic ((TPM_CC) 0x00000169)
+#define TPM_CC_GetCapability ((TPM_CC) 0x0000017a)
+#define TPM_CC_PCR_Read ((TPM_CC) 0x0000017e)
+#define TPM_CC_Load ((TPM_CC) 0x00000157)
+#define TPM_CC_LoadExternal ((TPM_CC) 0x00000167)
+#define TPM_CC_Unseal ((TPM_CC) 0x0000015e)
+#define TPM_CC_PolicyGetDigest ((TPM_CC) 0x00000189)
+#define TPM_CC_Hash ((TPM_CC) 0x0000017d)
+#define TPM_CC_VerifySignature ((TPM_CC) 0x00000177)
+#define TPM_CC_PolicyAuthorize ((TPM_CC) 0x0000016a)
+#define TPM_CC_TestParms ((TPM_CC) 0x0000018a)
+
+/* Hash algorithm sizes */
+#define TPM_SHA1_DIGEST_SIZE 20
+#define TPM_SHA256_DIGEST_SIZE 32
+#define TPM_SM3_256_DIGEST_SIZE 32
+#define TPM_SHA384_DIGEST_SIZE 48
+#define TPM_SHA512_DIGEST_SIZE 64
+
+/* Encryption algorithm sizes */
+#define TPM_MAX_SYM_BLOCK_SIZE 16
+#define TPM_MAX_SYM_DATA 256
+#define TPM_MAX_ECC_KEY_BYTES 128
+#define TPM_MAX_SYM_KEY_BYTES 32
+#define TPM_MAX_RSA_KEY_BYTES 512
+
+/* Buffer Size Constants */
+#define TPM_MAX_PCRS 32
+#define TPM_NUM_PCR_BANKS 16
+#define TPM_PCR_SELECT_MAX ((TPM_MAX_PCRS + 7) / 8)
+#define TPM_MAX_DIGEST_BUFFER 1024
+#define TPM_MAX_TPM_PROPERTIES 8
+#define TPM_MAX_NV_BUFFER_SIZE 2048
+#define TPM_PRIVATE_VENDOR_SPECIFIC_BYTES 1280
+
+/* TPM_GENERATED Constants */
+typedef grub_uint32_t TPM_GENERATED;
+
+#define TPM_GENERATED_VALUE ((TPM_GENERATED) 0xff544347)
+
+/* TPM_ALG_ID Types */
+typedef TPM_ALG_ID TPMI_ALG_PUBLIC;
+typedef TPM_ALG_ID TPMI_ALG_HASH;
+typedef TPM_ALG_ID TPMI_ALG_KEYEDHASH_SCHEME;
+typedef TPM_ALG_ID TPMI_ALG_KDF;
+typedef TPM_ALG_ID TPMI_ALG_SYM_OBJECT;
+typedef TPM_ALG_ID TPMI_ALG_SYM_MODE;
+typedef TPM_ALG_ID TPMI_ALG_RSA_DECRYPT;
+typedef TPM_ALG_ID TPMI_ALG_ECC_SCHEME;
+typedef TPM_ALG_ID TPMI_ALG_ASYM_SCHEME;
+typedef TPM_ALG_ID TPMI_ALG_RSA_SCHEME;
+typedef TPM_ALG_ID TPMI_ALG_SYM;
+typedef TPM_ALG_ID TPMI_ALG_SIG_SCHEME;
+
+/* TPM_KEY_BITS Type */
+typedef grub_uint16_t TPM_KEY_BITS;
+
+/* TPM_ECC_CURVE Types */
+typedef TPM_ECC_CURVE TPMI_ECC_CURVE;
+
+/* TPMI_RH_PROVISION Type */
+typedef TPM_HANDLE TPMI_RH_PROVISION;
+
+/* TPMI_RH_PROVISION Type */
+typedef TPM_HANDLE TPMI_DH_PERSISTENT;
+
+#endif /* ! GRUB_TPM2_INTERNAL_TYPES_HEADER */
diff --git a/include/grub/tpm2/mu.h b/include/grub/tpm2/mu.h
new file mode 100644
index 000000000..0970b5c70
--- /dev/null
+++ b/include/grub/tpm2/mu.h
@@ -0,0 +1,396 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_MU_HEADER
+#define GRUB_TPM2_MU_HEADER 1
+
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/tpm2.h>
+
+void
+grub_tpm2_mu_TPMS_AUTH_COMMAND_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_AUTH_COMMAND* authCommand);
+
+void
+grub_tpm2_mu_TPM2B_Marshal (grub_tpm2_buffer_t buffer,
+ const grub_uint16_t size,
+ const grub_uint8_t* b);
+
+void
+grub_tpm2_mu_TPMU_SYM_KEY_BITS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SYM_OBJECT algorithm,
+ const TPMU_SYM_KEY_BITS *p);
+
+void
+grub_tpm2_mu_TPMU_SYM_MODE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SYM_OBJECT algorithm,
+ const TPMU_SYM_MODE *p);
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SYM_DEF *p);
+
+void
+grub_tpm2_mu_TPMS_PCR_SELECTION_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_PCR_SELECTION* pcrSelection);
+
+void
+grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (grub_tpm2_buffer_t buffer,
+ const TPML_PCR_SELECTION* pcrSelection);
+
+void
+grub_tpm2_mu_TPMA_OBJECT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMA_OBJECT *p);
+
+void
+grub_tpm2_mu_TPMS_SCHEME_XOR_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SCHEME_XOR *p);
+
+void
+grub_tpm2_mu_TPMS_SCHEME_HMAC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SCHEME_HMAC *p);
+
+void
+grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_KEYEDHASH_SCHEME scheme,
+ const TPMU_SCHEME_KEYEDHASH *p);
+
+void
+grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_KEYEDHASH_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_KEYEDHASH_PARMS *p);
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SYM_DEF_OBJECT *p);
+
+void
+grub_tpm2_mu_TPMU_ASYM_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_RSA_DECRYPT scheme,
+ const TPMU_ASYM_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMT_RSA_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_RSA_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_RSA_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_RSA_PARMS *p);
+
+void
+grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SYMCIPHER_PARMS *p);
+
+void
+grub_tpm2_mu_TPMT_ECC_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_ECC_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMU_KDF_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_KDF scheme,
+ const TPMU_KDF_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMT_KDF_SCHEME_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_KDF_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_ECC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_ECC_PARMS *p);
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const grub_uint32_t type,
+ const TPMU_PUBLIC_PARMS *p);
+
+void
+grub_tpm2_mu_TPMS_ECC_POINT_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_ECC_POINT *p);
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_ID_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_PUBLIC type,
+ const TPMU_PUBLIC_ID *p);
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_PARMS_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_PUBLIC_PARMS *p);
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPMS_SENSITIVE_CREATE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SENSITIVE_CREATE *p);
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_CREATE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_SENSITIVE_CREATE *sensitiveCreate);
+
+void
+grub_tpm2_mu_TPMU_SENSITIVE_COMPOSITE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_PUBLIC type,
+ const TPMU_SENSITIVE_COMPOSITE *p);
+void
+grub_tpm2_mu_TPMT_SENSITIVE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SENSITIVE *p);
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_SENSITIVE *p);
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_RSA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SIGNATURE_RSA *p);
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_ECC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_SIGNATURE_ECC *p);
+
+void
+grub_tpm2_mu_TPMU_HA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_HASH hashAlg,
+ const TPMU_HA *p);
+
+void
+grub_tpm2_mu_TPMT_HA_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_HA *p);
+
+void
+grub_tpm2_mu_TPMU_SIGNATURE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMI_ALG_SIG_SCHEME sigAlg,
+ const TPMU_SIGNATURE *p);
+
+void
+grub_tpm2_mu_TPMT_SIGNATURE_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_SIGNATURE *p);
+
+void
+grub_tpm2_mu_TPMT_TK_VERIFIED_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMT_TK_VERIFIED *p);
+
+void
+grub_tpm2_mu_TPMS_AUTH_RESPONSE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_AUTH_RESPONSE* p);
+
+void
+grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_DIGEST* digest);
+
+void
+grub_tpm2_mu_TPM2B_NONCE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NONCE* nonce);
+
+void
+grub_tpm2_mu_TPM2B_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_DATA* data);
+
+void
+grub_tpm2_mu_TPMS_CREATION_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_CREATION_DATA *data);
+
+void
+grub_tpm2_mu_TPM2B_CREATION_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_CREATION_DATA *data);
+
+void
+grub_tpm2_mu_TPM2B_PRIVATE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PRIVATE* private);
+
+void
+grub_tpm2_mu_TPM2B_SENSITIVE_DATA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_SENSITIVE_DATA *data);
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_KEY_RSA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PUBLIC_KEY_RSA *rsa);
+
+void
+grub_tpm2_mu_TPM2B_ECC_PARAMETER_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_ECC_PARAMETER *param);
+
+void
+grub_tpm2_mu_TPMA_OBJECT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMA_OBJECT *p);
+
+void
+grub_tpm2_mu_TPMS_SCHEME_HMAC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SCHEME_HMAC *p);
+
+void
+grub_tpm2_mu_TPMS_SCHEME_XOR_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SCHEME_XOR *p);
+
+void
+grub_tpm2_mu_TPMU_SCHEME_KEYEDHASH_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_KEYEDHASH_SCHEME scheme,
+ TPMU_SCHEME_KEYEDHASH *p);
+
+void
+grub_tpm2_mu_TPMT_KEYEDHASH_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_KEYEDHASH_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_KEYEDHASH_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_KEYEDHASH_PARMS *p);
+
+void
+grub_tpm2_mu_TPMU_SYM_KEY_BITS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SYM_OBJECT algorithm,
+ TPMU_SYM_KEY_BITS *p);
+
+void
+grub_tpm2_mu_TPMU_SYM_MODE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SYM_OBJECT algorithm,
+ TPMU_SYM_MODE *p);
+
+void
+grub_tpm2_mu_TPMT_SYM_DEF_OBJECT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_SYM_DEF_OBJECT *p);
+
+void
+grub_tpm2_mu_TPMS_SYMCIPHER_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SYMCIPHER_PARMS *p);
+
+void
+grub_tpm2_mu_TPMU_ASYM_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_RSA_DECRYPT scheme,
+ TPMU_ASYM_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMT_RSA_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_RSA_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_RSA_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_RSA_PARMS *p);
+
+void
+grub_tpm2_mu_TPMT_ECC_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_ECC_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMU_KDF_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_KDF scheme,
+ TPMU_KDF_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMT_KDF_SCHEME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_KDF_SCHEME *p);
+
+void
+grub_tpm2_mu_TPMS_ECC_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_ECC_PARMS *p);
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_PARMS_Unmarshal (grub_tpm2_buffer_t buffer,
+ grub_uint32_t type,
+ TPMU_PUBLIC_PARMS *p);
+
+void
+grub_tpm2_mu_TPMS_ECC_POINT_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_ECC_POINT *p);
+
+void
+grub_tpm2_mu_TPMU_PUBLIC_ID_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_PUBLIC type,
+ TPMU_PUBLIC_ID *p);
+
+void
+grub_tpm2_mu_TPMT_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPMS_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_NV_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPM2B_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NV_PUBLIC *p);
+
+void
+grub_tpm2_mu_TPM2B_NAME_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_NAME *n);
+
+void
+grub_tpm2_mu_TPMS_TAGGED_PROPERTY_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_TAGGED_PROPERTY* property);
+
+void
+grub_tpm2_mu_TPMT_TK_CREATION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_CREATION *p);
+
+void
+grub_tpm2_mu_TPMT_TK_HASHCHECK_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_HASHCHECK *p);
+
+void
+grub_tpm2_mu_TPMT_TK_VERIFIED_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_TK_VERIFIED *p);
+
+void
+grub_tpm2_mu_TPMS_PCR_SELECTION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_PCR_SELECTION* pcrSelection);
+
+void
+grub_tpm2_mu_TPML_PCR_SELECTION_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPML_PCR_SELECTION* pcrSelection);
+
+void
+grub_tpm2_mu_TPML_DIGEST_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPML_DIGEST* digest);
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_RSA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SIGNATURE_RSA *p);
+
+void
+grub_tpm2_mu_TPMS_SIGNATURE_ECC_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMS_SIGNATURE_ECC *p);
+
+void
+grub_tpm2_mu_TPMU_HA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_HASH hashAlg,
+ TPMU_HA *p);
+
+void
+grub_tpm2_mu_TPMT_HA_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_HA *p);
+
+void
+grub_tpm2_mu_TPMU_SIGNATURE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMI_ALG_SIG_SCHEME sigAlg,
+ TPMU_SIGNATURE *p);
+
+void
+grub_tpm2_mu_TPMT_SIGNATURE_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPMT_SIGNATURE *p);
+
+#endif /* ! GRUB_TPM2_MU_HEADER */
diff --git a/include/grub/tpm2/tcg2.h b/include/grub/tpm2/tcg2.h
new file mode 100644
index 000000000..553b3fd93
--- /dev/null
+++ b/include/grub/tpm2/tcg2.h
@@ -0,0 +1,34 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_TCG2_HEADER
+#define GRUB_TPM2_TCG2_HEADER 1
+
+#include <grub/err.h>
+#include <grub/types.h>
+
+grub_err_t
+grub_tcg2_get_max_output_size (grub_size_t *size);
+
+grub_err_t
+grub_tcg2_submit_command (grub_size_t input_size,
+ grub_uint8_t *input,
+ grub_size_t output_size,
+ grub_uint8_t *output);
+
+#endif /* ! GRUB_TPM2_TCG2_HEADER */
diff --git a/include/grub/tpm2/tpm2.h b/include/grub/tpm2/tpm2.h
new file mode 100644
index 000000000..cfdc9edcd
--- /dev/null
+++ b/include/grub/tpm2/tpm2.h
@@ -0,0 +1,34 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_TPM2_HEADER
+#define GRUB_TPM2_TPM2_HEADER 1
+
+#include <grub/tpm2/internal/types.h>
+#include <grub/tpm2/internal/structs.h>
+#include <grub/tpm2/internal/functions.h>
+
+/* Well-Known Windows SRK handle */
+#define TPM2_SRK_HANDLE 0x81000001
+
+typedef struct TPM2_SEALED_KEY {
+ TPM2B_PUBLIC public;
+ TPM2B_PRIVATE private;
+} TPM2_SEALED_KEY;
+
+#endif /* ! GRUB_TPM2_TPM2_HEADER */
--
2.35.3
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* [PATCH v12 11/20] key_protector: Add TPM2 Key Protector
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (9 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS) Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 12:23 ` James Bottomley
2024-04-19 8:30 ` [PATCH v12 12/20] cryptodisk: Support key protectors Gary Lin via Grub-devel
` (8 subsequent siblings)
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Hernan Gatta <hegatta@linux.microsoft.com>
The TPM2 key protector is a module that enables the automatic retrieval
of a fully-encrypted disk's unlocking key from a TPM 2.0.
The theory of operation is such that the module accepts various
arguments, most of which are optional and therefore possess reasonable
defaults. One of these arguments is the keyfile/tpm2key parameter, which
is mandatory. There are two supported key formats:
1. Raw Sealed Key (--keyfile)
When sealing a key with TPM2_Create, the public portion of the sealed
key is stored in TPM2B_PUBLIC, and the private portion is in
TPM2B_PRIVATE. The raw sealed key glues the fully marshalled
TPM2B_PUBLIC and TPM2B_PRIVATE into one file.
2. TPM 2.0 Key (--tpm2key)
The following is the ASN.1 definition of TPM 2.0 Key File:
TPMPolicy ::= SEQUENCE {
CommandCode [0] EXPLICIT INTEGER
CommandPolicy [1] EXPLICIT OCTET STRING
}
TPMAuthPolicy ::= SEQUENCE {
Name [0] EXPLICIT UTF8STRING OPTIONAL
Policy [1] EXPLICIT SEQUENCE OF TPMPolicy
}
TPMKey ::= SEQUENCE {
type OBJECT IDENTIFIER
emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL
policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL
secret [2] EXPLICIT OCTET STRING OPTIONAL
authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL
parent INTEGER
pubkey OCTET STRING
privkey OCTET STRING
}
The TPM2 key protector only expects a "sealed" key in DER encoding,
so 'type' is always 2.23.133.10.1.5, 'emptyAuth' is 'TRUE', and
'secret' is empty. 'policy' and 'authPolicy' are the possible policy
command sequences to construst the policy digest to unseal the key.
Similar to the raw sealed key, the public portion (TPM2B_PUBLIC) of
the sealed key is stored in 'pubkey', and the private portion
(TPM2B_PRIVATE) is in 'privkey'.
For more details: https://www.hansenpartnership.com/draft-bottomley-tpm2-keys.html
This sealed key file is created via the grub-protect tool. The tool
utilizes the TPM's sealing functionality to seal (i.e., encrypt) an
unlocking key using a Storage Root Key (SRK) to the values of various
Platform Configuration Registers (PCRs). These PCRs reflect the state
of the system as it boots. If the values are as expected, the system
may be considered trustworthy, at which point the TPM allows for a
caller to utilize the private component of the SRK to unseal (i.e.,
decrypt) the sealed key file. The caller, in this case, is this key
protector.
The TPM2 key protector registers two commands:
- tpm2_key_protector_init: Initializes the state of the TPM2 key
protector for later usage, clearing any
previous state, too, if any.
- tpm2_key_protector_clear: Clears any state set by tpm2_key_protector_init.
The way this is expected to be used requires the user to, either
interactively or, normally, via a boot script, initialize/configure
the key protector and then specify that it be used by the 'cryptomount'
command (modifications to this command are in a different patch).
For instance, to unseal the raw sealed key file:
tpm2_key_protector_init --keyfile=(hd0,gpt1)/efi/grub2/sealed-1.key
cryptomount -u <PART1_UUID> -P tpm2
tpm2_key_protector_init --keyfile=(hd0,gpt1)/efi/grub2/sealed-2.key --pcrs=7,11
cryptomount -u <PART2_UUID> -P tpm2
Or, to unseal the TPM 2.0 Key file:
tpm2_key_protector_init --tpm2key=(hd0,gpt1)/efi/grub2/sealed-1.tpm
cryptomount -u <PART1_UUID> -P tpm2
tpm2_key_protector_init --tpm2key=(hd0,gpt1)/efi/grub2/sealed-2.tpm --pcrs=7,11
cryptomount -u <PART2_UUID> -P tpm2
If a user does not initialize the key protector and attempts to use it
anyway, the protector returns an error.
Before unsealing the key, the TPM2 key protector follows the "TPMPolicy"
sequences to enforce the TPM policy commands to construct a valid policy
digest to unseal the key.
For the TPM 2.0 Key files, 'authPolicy' may contain multiple "TPMPolicy"
sequences, the TPM2 key protector iterates 'authPolicy' to find a valid
sequence to unseal key. If 'authPolicy' is empty or all sequences in
'authPolicy' fail, the protector tries the one from 'policy'. In case
'policy' is also empty, the protector creates a "TPMPolicy" sequence
based on the given PCR selection.
For the raw sealed key, the TPM2 key protector treats the key file as a
TPM 2.0 Key file without 'authPolicy' and 'policy', so the "TPMPolicy"
sequence is always based on the PCR selection from the command
parameters.
This commit only supports one policy command: TPM2_PolicyPCR. The
command set will be extended to support advanced features, such as
authorized policy, in the later commits.
Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/Makefile.core.def | 13 +
grub-core/tpm2/args.c | 179 +++++
grub-core/tpm2/module.c | 1219 +++++++++++++++++++++++++++++
grub-core/tpm2/tpm2key.asn | 31 +
grub-core/tpm2/tpm2key.c | 443 +++++++++++
grub-core/tpm2/tpm2key_asn1_tab.c | 41 +
include/grub/tpm2/internal/args.h | 51 ++
include/grub/tpm2/tpm2key.h | 83 ++
8 files changed, 2060 insertions(+)
create mode 100644 grub-core/tpm2/args.c
create mode 100644 grub-core/tpm2/module.c
create mode 100644 grub-core/tpm2/tpm2key.asn
create mode 100644 grub-core/tpm2/tpm2key.c
create mode 100644 grub-core/tpm2/tpm2key_asn1_tab.c
create mode 100644 include/grub/tpm2/internal/args.h
create mode 100644 include/grub/tpm2/tpm2key.h
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index fe58ec740..85aaadf68 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2561,6 +2561,19 @@ module = {
enable = efi;
};
+module = {
+ name = tpm2;
+ common = tpm2/args.c;
+ common = tpm2/buffer.c;
+ common = tpm2/module.c;
+ common = tpm2/mu.c;
+ common = tpm2/tpm2.c;
+ common = tpm2/tpm2key.c;
+ common = tpm2/tpm2key_asn1_tab.c;
+ efi = tpm2/tcg2.c;
+ enable = efi;
+};
+
module = {
name = tr;
common = commands/tr.c;
diff --git a/grub-core/tpm2/args.c b/grub-core/tpm2/args.c
new file mode 100644
index 000000000..d6aa7e8a2
--- /dev/null
+++ b/grub-core/tpm2/args.c
@@ -0,0 +1,179 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/err.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/tpm2/internal/args.h>
+
+grub_err_t
+grub_tpm2_protector_parse_pcrs (char *value, grub_uint8_t *pcrs,
+ grub_uint8_t *pcr_count)
+{
+ char *current_pcr = value;
+ char *next_pcr;
+ unsigned long pcr;
+ grub_uint8_t i;
+
+ if (grub_strlen (value) == 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ *pcr_count = 0;
+ for (i = 0; i < TPM_MAX_PCRS; i++)
+ {
+ next_pcr = grub_strchr (current_pcr, ',');
+ if (next_pcr == current_pcr)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Empty entry in PCR list"));
+ if (next_pcr)
+ *next_pcr = '\0';
+
+ grub_errno = GRUB_ERR_NONE;
+ pcr = grub_strtoul (current_pcr, NULL, 10);
+ if (grub_errno != GRUB_ERR_NONE)
+ return grub_error (grub_errno,
+ N_("Entry '%s' in PCR list is not a number"),
+ current_pcr);
+
+ if (pcr > TPM_MAX_PCRS)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Entry %lu in PCR list is too large to be a PCR "
+ "number, PCR numbers range from 0 to %u"),
+ pcr, TPM_MAX_PCRS);
+
+ pcrs[i] = (grub_uint8_t)pcr;
+ *pcr_count += 1;
+
+ if (next_pcr == NULL)
+ break;
+
+ current_pcr = next_pcr + 1;
+ if (*current_pcr == '\0')
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Trailing comma at the end of PCR list"));
+ }
+
+ if (i == TPM_MAX_PCRS)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Too many PCRs in PCR list, the maximum number of "
+ "PCRs is %u"), TPM_MAX_PCRS);
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tpm2_protector_parse_asymmetric (const char *value,
+ grub_srk_type_t *srk_type)
+{
+ if (grub_strcasecmp (value, "ECC") == 0 ||
+ grub_strcasecmp (value, "ECC_NIST_P256") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
+ srk_type->nameAlg = TPM_ALG_SHA256;
+ srk_type->aes_bits = 128;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+ else if (grub_strcasecmp (value, "RSA") == 0 ||
+ grub_strcasecmp (value, "RSA2048") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
+ srk_type->nameAlg = TPM_ALG_SHA256;
+ srk_type->aes_bits = 128;
+ srk_type->detail.rsa_bits = 2048;
+ }
+ else if (grub_strcasecmp (value, "RSA3072") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
+ srk_type->nameAlg = TPM_ALG_SHA384;
+ srk_type->aes_bits = 256;
+ srk_type->detail.rsa_bits = 3072;
+ }
+ else if (grub_strcasecmp (value, "RSA4096") == 0)
+ {
+ srk_type->type = TPM_ALG_RSA;
+ srk_type->nameAlg = TPM_ALG_SHA384;
+ srk_type->aes_bits = 256;
+ srk_type->detail.rsa_bits = 4096;
+ }
+ else if (grub_strcasecmp (value, "ECC_NIST_P384") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
+ srk_type->nameAlg = TPM_ALG_SHA384;
+ srk_type->aes_bits = 256;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P384;
+ }
+ else if (grub_strcasecmp (value, "ECC_NIST_P521") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
+ srk_type->nameAlg = TPM_ALG_SHA512;
+ srk_type->aes_bits = 256;
+ srk_type->detail.ecc_curve = TPM_ECC_NIST_P521;
+ }
+ else if (grub_strcasecmp (value, "ECC_SM2_P256") == 0)
+ {
+ srk_type->type = TPM_ALG_ECC;
+ srk_type->nameAlg = TPM_ALG_SM3_256;
+ srk_type->aes_bits = 128;
+ srk_type->detail.ecc_curve = TPM_ECC_SM2_P256;
+ }
+ else
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Value '%s' is not a valid asymmetric key type"),
+ value);
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tpm2_protector_parse_bank (const char *value, TPM_ALG_ID *bank)
+{
+ if (grub_strcasecmp (value, "SHA1") == 0)
+ *bank = TPM_ALG_SHA1;
+ else if (grub_strcasecmp (value, "SHA256") == 0)
+ *bank = TPM_ALG_SHA256;
+ else if (grub_strcasecmp (value, "SHA384") == 0)
+ *bank = TPM_ALG_SHA384;
+ else if (grub_strcasecmp (value, "SHA512") == 0)
+ *bank = TPM_ALG_SHA512;
+ else
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Value '%s' is not a valid PCR bank"), value);
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tpm2_protector_parse_tpm_handle (const char *value, TPM_HANDLE *handle)
+{
+ unsigned long num;
+
+ grub_errno = GRUB_ERR_NONE;
+ num = grub_strtoul (value, NULL, 0);
+ if (grub_errno != GRUB_ERR_NONE)
+ return grub_error (grub_errno, N_("TPM handle value '%s' is not a number"),
+ value);
+
+ if (num > GRUB_UINT_MAX)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Value %lu is too large to be a TPM handle, TPM "
+ "handles are unsigned 32-bit integers"), num);
+
+ *handle = (TPM_HANDLE)num;
+
+ return GRUB_ERR_NONE;
+}
diff --git a/grub-core/tpm2/module.c b/grub-core/tpm2/module.c
new file mode 100644
index 000000000..485845f36
--- /dev/null
+++ b/grub-core/tpm2/module.c
@@ -0,0 +1,1219 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/extcmd.h>
+#include <grub/file.h>
+#include <grub/libtasn1.h>
+#include <grub/list.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/key_protector.h>
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/internal/args.h>
+#include <grub/tpm2/internal/types.h>
+#include <grub/tpm2/mu.h>
+#include <grub/tpm2/tpm2.h>
+#include <grub/tpm2/tpm2key.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+typedef enum grub_tpm2_protector_mode
+{
+ GRUB_TPM2_PROTECTOR_MODE_UNSET,
+ GRUB_TPM2_PROTECTOR_MODE_SRK,
+ GRUB_TPM2_PROTECTOR_MODE_NV
+} grub_tpm2_protector_mode_t;
+
+enum grub_tpm2_protector_options
+{
+ OPTION_MODE,
+ OPTION_PCRS,
+ OPTION_BANK,
+ OPTION_TPM2KEY,
+ OPTION_KEYFILE,
+ OPTION_SRK,
+ OPTION_ASYMMETRIC,
+ OPTION_NVINDEX
+};
+
+struct grub_tpm2_protector_context
+{
+ grub_tpm2_protector_mode_t mode;
+ grub_uint8_t pcrs[TPM_MAX_PCRS];
+ grub_uint8_t pcr_count;
+ grub_srk_type_t srk_type;
+ TPM_ALG_ID bank;
+ const char *tpm2key;
+ const char *keyfile;
+ TPM_HANDLE srk;
+ TPM_HANDLE nv;
+};
+
+static const struct grub_arg_option grub_tpm2_protector_init_cmd_options[] =
+ {
+ /* Options for all modes */
+ {
+ .longarg = "mode",
+ .shortarg = 'm',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Unseal key using SRK ('srk') (default) or retrieve it from an NV "
+ "Index ('nv')."),
+ },
+ {
+ .longarg = "pcrs",
+ .shortarg = 'p',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Comma-separated list of PCRs used to authorize key release "
+ "e.g., '7,11'. (default: 7)"),
+ },
+ {
+ .longarg = "bank",
+ .shortarg = 'b',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Bank of PCRs used to authorize key release: "
+ "SHA1, SHA256, SHA384 or SHA512. (default: SHA256)"),
+ },
+ /* SRK-mode options */
+ {
+ .longarg = "tpm2key",
+ .shortarg = 'T',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("In SRK mode, path to the key file in the TPM 2.0 Key File format "
+ "to unseal using the TPM (e.g., (hd0,gpt1)/boot/grub2/sealed.tpm)."),
+ },
+ {
+ .longarg = "keyfile",
+ .shortarg = 'k',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("In SRK mode, path to the key file in the raw format to unseal "
+ "using the TPM (e.g., (hd0,gpt1)/boot/grub2/sealed.key). "
+ "(Mainly for backward compatibility. Please use '--tpm2key'.)"),
+ },
+ {
+ .longarg = "srk",
+ .shortarg = 's',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("In SRK mode, the SRK handle if the SRK is persistent."),
+ },
+ {
+ .longarg = "asymmetric",
+ .shortarg = 'a',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("In SRK mode, the type of SRK: RSA (RSA2048), RSA3072, "
+ "RSA4096, ECC (ECC_NIST_P256), ECC_NIST_P384, "
+ "ECC_NIST_P521, and ECC_SM2_P256. (default: ECC)"),
+ },
+ /* NV Index-mode options */
+ {
+ .longarg = "nvindex",
+ .shortarg = 'n',
+ .flags = 0,
+ .arg = NULL,
+ .type = ARG_TYPE_STRING,
+ .doc =
+ N_("Required in NV Index mode, the NV handle to read which must "
+ "readily exist on the TPM and which contains the key."),
+ },
+ /* End of list */
+ {0, 0, 0, 0, 0, 0}
+ };
+
+static grub_extcmd_t grub_tpm2_protector_init_cmd;
+static grub_extcmd_t grub_tpm2_protector_clear_cmd;
+static struct grub_tpm2_protector_context grub_tpm2_protector_ctx = { 0 };
+
+static grub_err_t
+grub_tpm2_protector_srk_read_file (const char *filepath, void **buffer,
+ grub_size_t *buffer_size)
+{
+ grub_file_t file;
+ grub_off_t file_size;
+ void *read_buffer;
+ grub_off_t read_n;
+ grub_err_t err;
+
+ /* Using GRUB_FILE_TYPE_SIGNATURE ensures we do not hash the keyfile into PCR9
+ * otherwise we'll never be able to predict the value of PCR9 at unseal time */
+ file = grub_file_open (filepath, GRUB_FILE_TYPE_SIGNATURE);
+ if (file == NULL)
+ {
+ /* Push errno from grub_file_open() into the error message stack */
+ grub_error_push();
+ err = grub_error (GRUB_ERR_FILE_NOT_FOUND,
+ N_("Could not open file: %s\n"),
+ filepath);
+ goto error;
+ }
+
+ file_size = grub_file_size (file);
+ if (file_size == 0)
+ {
+ err = grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Could not read file size: %s"),
+ filepath);
+ goto error;
+ }
+
+ read_buffer = grub_malloc (file_size);
+ if (read_buffer == NULL)
+ {
+ err = grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ N_("Could not allocate buffer for %s"),
+ filepath);
+ goto error;
+ }
+
+ read_n = grub_file_read (file, read_buffer, file_size);
+ if (read_n != file_size)
+ {
+ grub_free (read_buffer);
+ err = grub_error (GRUB_ERR_FILE_READ_ERROR,
+ N_("Could not retrieve file contents: %s"),
+ filepath);
+ goto error;
+ }
+
+ *buffer = read_buffer;
+ *buffer_size = file_size;
+
+ err = GRUB_ERR_NONE;
+
+error:
+ if (file != NULL)
+ grub_file_close (file);
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_srk_unmarshal_keyfile (void *sealed_key,
+ grub_size_t sealed_key_size,
+ TPM2_SEALED_KEY *sk)
+{
+ struct grub_tpm2_buffer buf;
+
+ grub_tpm2_buffer_init (&buf);
+ if (sealed_key_size > buf.cap)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Sealed key larger than %" PRIuGRUB_SIZE " bytes"),
+ buf.cap);
+
+ grub_memcpy (buf.data, sealed_key, sealed_key_size);
+ buf.size = sealed_key_size;
+
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (&buf, &sk->public);
+ grub_tpm2_mu_TPM2B_PRIVATE_Unmarshal (&buf, &sk->private);
+
+ if (buf.error)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("Malformed TPM wire key file"));
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_srk_unmarshal_tpm2key (void *sealed_key,
+ grub_size_t sealed_key_size,
+ tpm2key_policy_t *policy_seq,
+ tpm2key_authpolicy_t *authpol_seq,
+ grub_uint32_t *parent,
+ TPM2_SEALED_KEY *sk)
+{
+ asn1_node tpm2key = NULL;
+ grub_uint32_t parent_tmp;
+ void *sealed_pub = NULL;
+ grub_size_t sealed_pub_size;
+ void *sealed_priv = NULL;
+ grub_size_t sealed_priv_size;
+ struct grub_tpm2_buffer buf;
+ grub_err_t err;
+
+ /*
+ * Start to parse the tpm2key file
+ * TPMKey ::= SEQUENCE {
+ * type OBJECT IDENTIFIER,
+ * emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL,
+ * policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL,
+ * secret [2] EXPLICIT OCTET STRING OPTIONAL,
+ * authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL,
+ * parent INTEGER,
+ * pubkey OCTET STRING,
+ * privkey OCTET STRING
+ * }
+ */
+ err = grub_tpm2key_start_parsing (&tpm2key, sealed_key, sealed_key_size);
+ if (err != GRUB_ERR_NONE)
+ return err;
+
+ /*
+ * Retrieve the policy sequence from 'policy'
+ * policy_seq will be NULL when 'policy' is not available
+ */
+ err = grub_tpm2key_get_policy_seq (tpm2key, policy_seq);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /*
+ * Retrieve the authpolicy sequence from 'authPolicy'
+ * authpol_seq will be NULL when 'authPolicy' is not available
+ */
+ err = grub_tpm2key_get_authpolicy_seq (tpm2key, authpol_seq);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /* Retrieve the parent handle */
+ err = grub_tpm2key_get_parent (tpm2key, &parent_tmp);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /* The parent handle should be either PERMANENT or PERSISTENT. */
+ if (!TPM_HT_IS_PERMANENT (parent_tmp) && !TPM_HT_IS_PERSISTENT (parent_tmp))
+ {
+ err = GRUB_ERR_OUT_OF_RANGE;
+ goto error;
+ }
+
+ *parent = parent_tmp;
+
+ /* Retrieve the public part of the sealed key */
+ err = grub_tpm2key_get_pubkey (tpm2key, &sealed_pub, &sealed_pub_size);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /* Retrieve the private part of the sealed key */
+ err = grub_tpm2key_get_privkey (tpm2key, &sealed_priv, &sealed_priv_size);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /* Unmarshal the sealed key */
+ grub_tpm2_buffer_init (&buf);
+ if (sealed_pub_size + sealed_priv_size > buf.cap)
+ {
+ err = grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Sealed key larger than %" PRIuGRUB_SIZE " bytes"),
+ buf.cap);
+ goto error;
+ }
+
+ grub_tpm2_buffer_pack (&buf, sealed_pub, sealed_pub_size);
+ grub_tpm2_buffer_pack (&buf, sealed_priv, sealed_priv_size);
+
+ buf.offset = 0;
+
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (&buf, &sk->public);
+ grub_tpm2_mu_TPM2B_PRIVATE_Unmarshal (&buf, &sk->private);
+
+ if (buf.error)
+ {
+ err = grub_error (GRUB_ERR_BAD_ARGUMENT, N_("Malformed TPM 2.0 key file"));
+ goto error;
+ }
+
+ err = GRUB_ERR_NONE;
+
+error:
+ /* End the parsing */
+ grub_tpm2key_end_parsing (tpm2key);
+ grub_free (sealed_pub);
+ grub_free (sealed_priv);
+
+ return err;
+}
+
+/* Check if the SRK exists in the specified handle */
+static grub_err_t
+grub_tpm2_protector_srk_check (const TPM_HANDLE srk_handle)
+{
+ TPM_RC rc;
+ TPM2B_PUBLIC public;
+
+ /* Find SRK */
+ rc = TPM2_ReadPublic (srk_handle, NULL, &public);
+ if (rc == TPM_RC_SUCCESS)
+ return GRUB_ERR_NONE;
+
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to retrieve SRK from 0x%x (TPM2_ReadPublic: 0x%x)"),
+ srk_handle, rc);
+}
+
+/* Get the SRK with the template */
+static grub_err_t
+grub_tpm2_protector_srk_get (const grub_srk_type_t srk_type,
+ const TPM_HANDLE parent,
+ TPM_HANDLE *srk_handle)
+{
+ TPM_RC rc;
+ TPMT_PUBLIC_PARMS parms = { 0 };
+ TPMS_AUTH_COMMAND authCommand = { 0 };
+ TPM2B_SENSITIVE_CREATE inSensitive = { 0 };
+ TPM2B_PUBLIC inPublic = { 0 };
+ TPM2B_DATA outsideInfo = { 0 };
+ TPML_PCR_SELECTION creationPcr = { 0 };
+ TPM2B_PUBLIC outPublic = { 0 };
+ TPM2B_CREATION_DATA creationData = { 0 };
+ TPM2B_DIGEST creationHash = { 0 };
+ TPMT_TK_CREATION creationTicket = { 0 };
+ TPM2B_NAME srkName = { 0 };
+ TPM_HANDLE tmp_handle = 0;
+
+ inPublic.publicArea.type = srk_type.type;
+ inPublic.publicArea.nameAlg = srk_type.nameAlg;
+ inPublic.publicArea.objectAttributes.restricted = 1;
+ inPublic.publicArea.objectAttributes.userWithAuth = 1;
+ inPublic.publicArea.objectAttributes.decrypt = 1;
+ inPublic.publicArea.objectAttributes.fixedTPM = 1;
+ inPublic.publicArea.objectAttributes.fixedParent = 1;
+ inPublic.publicArea.objectAttributes.sensitiveDataOrigin = 1;
+ inPublic.publicArea.objectAttributes.noDA = 1;
+
+ if (srk_type.type == TPM_ALG_RSA)
+ {
+ inPublic.publicArea.parameters.rsaDetail.symmetric.algorithm = TPM_ALG_AES;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = srk_type.aes_bits;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.rsaDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.rsaDetail.keyBits = srk_type.detail.rsa_bits;
+ inPublic.publicArea.parameters.rsaDetail.exponent = 0;
+ }
+ else if (srk_type.type == TPM_ALG_ECC)
+ {
+ inPublic.publicArea.parameters.eccDetail.symmetric.algorithm = TPM_ALG_AES;
+ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = srk_type.aes_bits;
+ inPublic.publicArea.parameters.eccDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.eccDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.eccDetail.curveID = srk_type.detail.ecc_curve;
+ inPublic.publicArea.parameters.eccDetail.kdf.scheme = TPM_ALG_NULL;
+ }
+ else
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("Unknown SRK algorithm"));
+
+ /* Test the parameters before SRK generation */
+ parms.type = srk_type.type;
+ grub_memcpy (&parms.parameters, &inPublic.publicArea.parameters,
+ sizeof (TPMU_PUBLIC_PARMS));
+
+ rc = TPM2_TestParms (&parms, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Unsupported SRK template (TPM2_TestParms: 0x%x)"),
+ rc);
+
+ /* Create SRK */
+ authCommand.sessionHandle = TPM_RS_PW;
+ rc = TPM2_CreatePrimary (parent, &authCommand, &inSensitive, &inPublic,
+ &outsideInfo, &creationPcr, &tmp_handle, &outPublic,
+ &creationData, &creationHash, &creationTicket,
+ &srkName, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Could not create SRK (TPM2_CreatePrimary: 0x%x)"),
+ rc);
+
+ *srk_handle = tmp_handle;
+
+ return GRUB_ERR_NONE;
+}
+
+/* Load the SRK from the persistent handle or create one with a given type of
+ template, and then associate the sealed key with the SRK
+ Return values:
+ * GRUB_ERR_NONE: Everything is fine.
+ * GRUB_ERR_BAD_ARGUMENT: The SRK doesn't match. Try another one.
+ * Other: Something went wrong.
+*/
+static grub_err_t
+grub_tpm2_protector_srk_load (const grub_srk_type_t srk_type,
+ const TPM2_SEALED_KEY *sealed_key,
+ const TPM_HANDLE parent,
+ TPM_HANDLE *sealed_handle,
+ TPM_HANDLE *srk_handle)
+{
+ TPMS_AUTH_COMMAND authCmd = { 0 };
+ TPM2B_NAME name = { 0 };
+ TPM_RC rc;
+ grub_err_t err;
+
+ if (srk_handle == NULL)
+ return GRUB_ERR_BUG;
+
+ if (*srk_handle != 0)
+ {
+ err = grub_tpm2_protector_srk_check (*srk_handle);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+ else
+ {
+ err = grub_tpm2_protector_srk_get (srk_type, parent, srk_handle);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ /* Load the sealed key and associate it with the SRK */
+ authCmd.sessionHandle = TPM_RS_PW;
+ rc = TPM2_Load (*srk_handle, &authCmd, &sealed_key->private, &sealed_key->public,
+ sealed_handle, &name, NULL);
+ /* If TPM2_Load returns (TPM_RC_INTEGRITY | TPM_RC_P | TPM_RC_1), then it
+ implies the wrong SRK is used. */
+ if (rc == (TPM_RC_INTEGRITY | TPM_RC_P | TPM_RC_1))
+ {
+ err = grub_error (GRUB_ERR_BAD_ARGUMENT, N_("SRK not matched"));
+ goto error;
+ }
+ else if (rc != TPM_RC_SUCCESS)
+ {
+ err = grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to load sealed key (TPM2_Load: 0x%x)"),
+ rc);
+ goto error;
+ }
+
+ return GRUB_ERR_NONE;
+
+error:
+ if (!TPM_HT_IS_PERSISTENT (*srk_handle))
+ TPM2_FlushContext (*srk_handle);
+
+ return err;
+}
+
+static const char *
+srk_type_to_name (grub_srk_type_t srk_type)
+{
+ if (srk_type.type == TPM_ALG_ECC)
+ {
+ switch (srk_type.detail.ecc_curve)
+ {
+ case TPM_ECC_NIST_P256:
+ return "ECC_NIST_P256";
+ }
+ }
+ else if (srk_type.type == TPM_ALG_RSA)
+ {
+ switch (srk_type.detail.rsa_bits)
+ {
+ case 2048:
+ return "RSA2048";
+ case 3072:
+ return "RSA3072";
+ }
+ }
+
+ return "Unknown";
+}
+
+static grub_err_t
+grub_tpm2_protector_load_key (const struct grub_tpm2_protector_context *ctx,
+ const TPM2_SEALED_KEY *sealed_key,
+ const TPM_HANDLE parent_handle,
+ TPM_HANDLE *sealed_handle,
+ TPM_HANDLE *srk_handle)
+{
+ grub_err_t err;
+ int i;
+ grub_srk_type_t fallback_srks[] = {
+ {
+ .type = TPM_ALG_ECC,
+ .nameAlg = TPM_ALG_SHA256,
+ .aes_bits = 128,
+ .detail.ecc_curve = TPM_ECC_NIST_P256,
+ },
+ {
+ .type = TPM_ALG_RSA,
+ .nameAlg = TPM_ALG_SHA256,
+ .aes_bits = 128,
+ .detail.rsa_bits = 2048,
+ },
+ {
+ .type = TPM_ALG_RSA,
+ .nameAlg = TPM_ALG_SHA384,
+ .aes_bits = 256,
+ .detail.rsa_bits = 3072,
+ },
+ {
+ .type = TPM_ALG_ERROR,
+ }
+ };
+
+ /* Try the given persistent SRK if exists */
+ if (*srk_handle != 0)
+ {
+ err = grub_tpm2_protector_srk_load (ctx->srk_type, sealed_key,
+ parent_handle, sealed_handle,
+ srk_handle);
+ if (err != GRUB_ERR_BAD_ARGUMENT)
+ return err;
+
+ grub_print_error ();
+ grub_printf_ (N_("Trying the specified SRK algorithm: %s\n"),
+ srk_type_to_name (ctx->srk_type));
+ grub_errno = GRUB_ERR_NONE;
+ *srk_handle = 0;
+ }
+
+ /* Try the specified algorithm for the SRK template */
+ if (*srk_handle == 0)
+ {
+ err = grub_tpm2_protector_srk_load (ctx->srk_type, sealed_key,
+ parent_handle, sealed_handle,
+ srk_handle);
+ if (err != GRUB_ERR_BAD_ARGUMENT)
+ return err;
+
+ grub_print_error ();
+ grub_errno = GRUB_ERR_NONE;
+ *srk_handle = 0;
+ }
+
+ /* Try all the fallback SRK templates */
+ for (i = 0; fallback_srks[i].type != TPM_ALG_ERROR; i++)
+ {
+ /* Skip the specified algorithm */
+ if (fallback_srks[i].type == ctx->srk_type.type &&
+ (fallback_srks[i].detail.rsa_bits == ctx->srk_type.detail.rsa_bits ||
+ fallback_srks[i].detail.ecc_curve == ctx->srk_type.detail.ecc_curve))
+ continue;
+
+ grub_printf_ (N_("Trying fallback %s template\n"),
+ srk_type_to_name (fallback_srks[i]));
+
+ *srk_handle = 0;
+
+ err = grub_tpm2_protector_srk_load (fallback_srks[i], sealed_key,
+ parent_handle, sealed_handle,
+ srk_handle);
+ if (err != GRUB_ERR_BAD_ARGUMENT)
+ return err;
+
+ grub_print_error ();
+ grub_errno = GRUB_ERR_NONE;
+ }
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_policypcr (TPMI_SH_AUTH_SESSION session,
+ struct grub_tpm2_buffer *cmd_buf)
+{
+ TPM2B_DIGEST pcr_digest;
+ TPML_PCR_SELECTION pcr_sel;
+ TPM_RC rc;
+
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (cmd_buf, &pcr_digest);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Unmarshal (cmd_buf, &pcr_sel);
+ if (cmd_buf->error)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to unmarshal CommandPolicy for TPM2_PolicyPCR"));
+
+ rc = TPM2_PolicyPCR (session, NULL, &pcr_digest, &pcr_sel, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to submit PCR policy (TPM2_PolicyPCR: 0x%x)"),
+ rc);
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_enforce_policy (tpm2key_policy_t policy, TPMI_SH_AUTH_SESSION session)
+{
+ struct grub_tpm2_buffer buf;
+ grub_err_t err;
+
+ grub_tpm2_buffer_init (&buf);
+ if (policy->cmd_policy_len > buf.cap)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("CommandPolicy larger than TPM buffer"));
+
+ grub_memcpy (buf.data, policy->cmd_policy, policy->cmd_policy_len);
+ buf.size = policy->cmd_policy_len;
+
+ switch (policy->cmd_code)
+ {
+ case TPM_CC_PolicyPCR:
+ err = grub_tpm2_protector_policypcr (session, &buf);
+ break;
+ default:
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Unknown TPM Command: 0x%x"), policy->cmd_code);
+ }
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_enforce_policy_seq (tpm2key_policy_t policy_seq,
+ TPMI_SH_AUTH_SESSION session)
+{
+ tpm2key_policy_t policy;
+ grub_err_t err;
+
+ FOR_LIST_ELEMENTS (policy, policy_seq)
+ {
+ err = grub_tpm2_protector_enforce_policy (policy, session);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_simple_policy_seq (const struct grub_tpm2_protector_context *ctx,
+ tpm2key_policy_t *policy_seq)
+{
+ tpm2key_policy_t policy = NULL;
+ struct grub_tpm2_buffer buf;
+ TPML_PCR_SELECTION pcr_sel = {
+ .count = 1,
+ .pcrSelections = {
+ {
+ .hash = ctx->bank,
+ .sizeOfSelect = 3,
+ .pcrSelect = { 0 }
+ },
+ }
+ };
+ grub_uint8_t i;
+ grub_err_t err;
+
+ if (policy_seq == NULL)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ grub_tpm2_buffer_init (&buf);
+
+ for (i = 0; i < ctx->pcr_count; i++)
+ TPMS_PCR_SELECTION_SelectPCR (&pcr_sel.pcrSelections[0], ctx->pcrs[i]);
+
+ grub_tpm2_buffer_pack_u16 (&buf, 0);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&buf, &pcr_sel);
+
+ if (buf.error)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ policy = grub_malloc (sizeof(struct tpm2key_policy));
+ if (policy == NULL)
+ {
+ err = GRUB_ERR_OUT_OF_MEMORY;
+ goto error;
+ }
+ policy->cmd_code = TPM_CC_PolicyPCR;
+ policy->cmd_policy = grub_malloc (buf.size);
+ if (policy->cmd_policy == NULL)
+ {
+ err = GRUB_ERR_OUT_OF_MEMORY;
+ goto error;
+ }
+ grub_memcpy (policy->cmd_policy, buf.data, buf.size);
+ policy->cmd_policy_len = buf.size;
+
+ grub_list_push (GRUB_AS_LIST_P (policy_seq), GRUB_AS_LIST (policy));
+
+ return GRUB_ERR_NONE;
+
+error:
+ grub_free (policy);
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_unseal (tpm2key_policy_t policy_seq, TPM_HANDLE sealed_handle,
+ grub_uint8_t **key, grub_size_t *key_size)
+{
+ TPMS_AUTH_COMMAND authCmd = { 0 };
+ TPM2B_SENSITIVE_DATA data;
+ TPM2B_NONCE nonceCaller = { 0 };
+ TPMT_SYM_DEF symmetric = { 0 };
+ TPMI_SH_AUTH_SESSION session;
+ grub_uint8_t *key_out;
+ TPM_RC rc;
+ grub_err_t err;
+
+ /* Start Auth Session */
+ nonceCaller.size = TPM_SHA256_DIGEST_SIZE;
+ symmetric.algorithm = TPM_ALG_NULL;
+ rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, NULL, &nonceCaller, NULL,
+ TPM_SE_POLICY, &symmetric, TPM_ALG_SHA256,
+ &session, NULL, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to start auth session (TPM2_StartAuthSession: 0x%x)"),
+ rc);
+
+ /* Enforce the policy command sequence */
+ err = grub_tpm2_protector_enforce_policy_seq (policy_seq, session);
+ if (err != GRUB_ERR_NONE)
+ goto error;
+
+ /* Unseal Sealed Key */
+ authCmd.sessionHandle = session;
+ rc = TPM2_Unseal (sealed_handle, &authCmd, &data, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ err = grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to unseal sealed key (TPM2_Unseal: 0x%x)"),
+ rc);
+ goto error;
+ }
+
+ /* Epilogue */
+ key_out = grub_malloc (data.size);
+ if (key_out == NULL)
+ {
+ err = grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ N_("No memory left to allocate unlock key buffer"));
+ goto error;
+ }
+
+ grub_memcpy (key_out, data.buffer, data.size);
+
+ *key = key_out;
+ *key_size = data.size;
+
+ err = GRUB_ERR_NONE;
+
+error:
+ TPM2_FlushContext (session);
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_srk_recover (const struct grub_tpm2_protector_context *ctx,
+ grub_uint8_t **key, grub_size_t *key_size)
+{
+ TPM2_SEALED_KEY sealed_key = { 0 };
+ void *file_bytes = NULL;
+ grub_size_t file_size = 0;
+ TPM_HANDLE parent_handle = 0;
+ TPM_HANDLE srk_handle = 0;
+ TPM_HANDLE sealed_handle = 0;
+ tpm2key_policy_t policy_seq = NULL;
+ tpm2key_authpolicy_t authpol = NULL;
+ tpm2key_authpolicy_t authpol_seq = NULL;
+ grub_err_t err;
+
+ /*
+ * Retrieve sealed key, parent handle, policy sequence, and authpolicy
+ * sequence from the key file
+ */
+ if (ctx->tpm2key)
+ {
+ err = grub_tpm2_protector_srk_read_file (ctx->tpm2key, &file_bytes,
+ &file_size);
+ if (err != GRUB_ERR_NONE)
+ return err;
+
+ err = grub_tpm2_protector_srk_unmarshal_tpm2key (file_bytes,
+ file_size,
+ &policy_seq,
+ &authpol_seq,
+ &parent_handle,
+ &sealed_key);
+ if (err != GRUB_ERR_NONE)
+ goto exit1;
+ }
+ else
+ {
+ err = grub_tpm2_protector_srk_read_file (ctx->keyfile, &file_bytes,
+ &file_size);
+ if (err != GRUB_ERR_NONE)
+ return err;
+
+ parent_handle = TPM_RH_OWNER;
+ err = grub_tpm2_protector_srk_unmarshal_keyfile (file_bytes,
+ file_size,
+ &sealed_key);
+ if (err != GRUB_ERR_NONE)
+ goto exit1;
+ }
+
+ /* Set the SRK handle if it is specified with '--srk' or inside the key file */
+ if (ctx->srk != 0)
+ srk_handle = ctx->srk;
+ else if (TPM_HT_IS_PERSISTENT (parent_handle))
+ srk_handle = parent_handle;
+
+ /* Load the sealed key into TPM and associate it with the SRK */
+ err = grub_tpm2_protector_load_key (ctx, &sealed_key, parent_handle,
+ &sealed_handle, &srk_handle);
+ if (err != GRUB_ERR_NONE)
+ goto exit1;
+
+ /*
+ * Set err to an error code to trigger the standalone policy sequence
+ * if there is no authpolicy sequence
+ */
+ err = GRUB_ERR_READ_ERROR;
+
+ /* Iterate the authpolicy sequence to find one that unseals the key */
+ FOR_LIST_ELEMENTS (authpol, authpol_seq)
+ {
+ err = grub_tpm2_protector_unseal (authpol->policy_seq, sealed_handle,
+ key, key_size);
+ if (err == GRUB_ERR_NONE)
+ break;
+
+ /*
+ * Push the error message into the grub_error stack
+ * Note: The grub_error stack may overflow if there are too many policy
+ * sequences. Anyway, we still can keep the error messages from
+ * the first few policy sequences which are usually most likely to
+ * unseal the key.
+ */
+ grub_error_push();
+ }
+
+ /* Give the standalone policy sequence a try */
+ if (err != GRUB_ERR_NONE)
+ {
+ /*
+ * Create a basic policy sequence based on the given PCR selection if the
+ * key file doesn't provide one
+ */
+ if (policy_seq == NULL)
+ {
+ err = grub_tpm2_protector_simple_policy_seq (ctx, &policy_seq);
+ if (err != GRUB_ERR_NONE)
+ goto exit2;
+ }
+
+ err = grub_tpm2_protector_unseal (policy_seq, sealed_handle, key, key_size);
+ }
+
+ /* Pop error messages on success */
+ if (err == GRUB_ERR_NONE)
+ while (grub_error_pop ());
+
+exit2:
+ TPM2_FlushContext (sealed_handle);
+
+ if (!TPM_HT_IS_PERSISTENT (srk_handle))
+ TPM2_FlushContext (srk_handle);
+
+exit1:
+ grub_tpm2key_free_policy_seq (policy_seq);
+ grub_tpm2key_free_authpolicy_seq (authpol_seq);
+ grub_free (file_bytes);
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_nv_recover (const struct grub_tpm2_protector_context *ctx,
+ grub_uint8_t **key, grub_size_t *key_size)
+{
+ (void)ctx;
+ (void)key;
+ (void)key_size;
+
+ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("NV Index mode is not implemented yet"));
+}
+
+static grub_err_t
+grub_tpm2_protector_recover (const struct grub_tpm2_protector_context *ctx,
+ grub_uint8_t **key, grub_size_t *key_size)
+{
+ switch (ctx->mode)
+ {
+ case GRUB_TPM2_PROTECTOR_MODE_SRK:
+ return grub_tpm2_protector_srk_recover (ctx, key, key_size);
+ case GRUB_TPM2_PROTECTOR_MODE_NV:
+ return grub_tpm2_protector_nv_recover (ctx, key, key_size);
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+}
+
+static grub_err_t
+grub_tpm2_protector_recover_key (grub_uint8_t **key, grub_size_t *key_size)
+{
+ /* Expect a call to tpm2_protector_init before anybody tries to use us */
+ if (grub_tpm2_protector_ctx.mode == GRUB_TPM2_PROTECTOR_MODE_UNSET)
+ return grub_error (GRUB_ERR_INVALID_COMMAND,
+ N_("Cannot use TPM2 key protector without initializing "
+ "it, call tpm2_protector_init first"));
+
+ if (key == NULL || key_size == NULL)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ return grub_tpm2_protector_recover (&grub_tpm2_protector_ctx, key, key_size);
+}
+
+static grub_err_t
+grub_tpm2_protector_check_args (struct grub_tpm2_protector_context *ctx)
+{
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_UNSET)
+ ctx->mode = GRUB_TPM2_PROTECTOR_MODE_SRK;
+
+ /* Checks for SRK mode */
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_SRK && ctx->keyfile == NULL
+ && ctx->tpm2key == NULL)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In SRK mode, a key file must be specified: "
+ "--tpm2key/-T or --keyfile/-k"));
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_SRK && ctx->keyfile
+ && ctx->tpm2key)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In SRK mode, please specify a key file with "
+ "only --tpm2key/-T or --keyfile/-k"));
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_SRK && ctx->nv)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In SRK mode, an NV Index cannot be specified"));
+
+ /* Checks for NV mode */
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_NV && ctx->nv == 0)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In NV Index mode, an NV Index must be specified: "
+ "--nvindex or -n"));
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_NV &&
+ (ctx->tpm2key || ctx->keyfile))
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In NV Index mode, a keyfile cannot be specified"));
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_NV && ctx->srk)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In NV Index mode, an SRK cannot be specified"));
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_NV && ctx->srk_type.type)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("In NV Index mode, an asymmetric key type cannot be "
+ "specified"));
+
+ /* Defaults assignment */
+ if (ctx->bank == TPM_ALG_ERROR)
+ ctx->bank = TPM_ALG_SHA256;
+
+ if (ctx->pcr_count == 0)
+ {
+ ctx->pcrs[0] = 7;
+ ctx->pcr_count = 1;
+ }
+
+ if (ctx->mode == GRUB_TPM2_PROTECTOR_MODE_SRK)
+ {
+ if (ctx->srk_type.type == TPM_ALG_ERROR)
+ {
+ ctx->srk_type.type = TPM_ALG_ECC;
+ ctx->srk_type.nameAlg = TPM_ALG_SHA256;
+ ctx->srk_type.aes_bits = 128;
+ ctx->srk_type.detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_parse_file (const char *value, const char **file)
+{
+ if (grub_strlen (value) == 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ *file = grub_strdup (value);
+ if (*file == NULL)
+ return grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ N_("No memory to duplicate file path"));
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_parse_mode (const char *value,
+ grub_tpm2_protector_mode_t *mode)
+{
+ if (grub_strcmp (value, "srk") == 0)
+ *mode = GRUB_TPM2_PROTECTOR_MODE_SRK;
+ else if (grub_strcmp (value, "nv") == 0)
+ *mode = GRUB_TPM2_PROTECTOR_MODE_NV;
+ else
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Value '%s' is not a valid TPM2 key protector mode"),
+ value);
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_tpm2_protector_init_cmd_handler (grub_extcmd_context_t ctxt, int argc,
+ char **args __attribute__ ((unused)))
+{
+ struct grub_arg_list *state = ctxt->state;
+ grub_err_t err;
+
+ if (argc)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("The TPM2 key protector does not accept any "
+ "non-option arguments (i.e., like -o and/or --option "
+ "only)"));
+
+ grub_free ((void *) grub_tpm2_protector_ctx.keyfile);
+ grub_memset (&grub_tpm2_protector_ctx, 0, sizeof (grub_tpm2_protector_ctx));
+
+ if (state[OPTION_MODE].set) /* mode */
+ {
+ err = grub_tpm2_protector_parse_mode (state[OPTION_MODE].arg,
+ &grub_tpm2_protector_ctx.mode);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_PCRS].set) /* pcrs */
+ {
+ err = grub_tpm2_protector_parse_pcrs (state[OPTION_PCRS].arg,
+ grub_tpm2_protector_ctx.pcrs,
+ &grub_tpm2_protector_ctx.pcr_count);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_BANK].set) /* bank */
+ {
+ err = grub_tpm2_protector_parse_bank (state[OPTION_BANK].arg,
+ &grub_tpm2_protector_ctx.bank);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_TPM2KEY].set) /* tpm2key */
+ {
+ err = grub_tpm2_protector_parse_file (state[OPTION_TPM2KEY].arg,
+ &grub_tpm2_protector_ctx.tpm2key);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_KEYFILE].set) /* keyfile */
+ {
+ err = grub_tpm2_protector_parse_file (state[OPTION_KEYFILE].arg,
+ &grub_tpm2_protector_ctx.keyfile);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_SRK].set) /* srk */
+ {
+ err = grub_tpm2_protector_parse_tpm_handle (state[OPTION_SRK].arg,
+ &grub_tpm2_protector_ctx.srk);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_ASYMMETRIC].set) /* asymmetric */
+ {
+ err = grub_tpm2_protector_parse_asymmetric (state[OPTION_ASYMMETRIC].arg,
+ &grub_tpm2_protector_ctx.srk_type);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ if (state[OPTION_NVINDEX].set) /* nvindex */
+ {
+ err = grub_tpm2_protector_parse_tpm_handle (state[OPTION_NVINDEX].arg,
+ &grub_tpm2_protector_ctx.nv);
+ if (err != GRUB_ERR_NONE)
+ return err;
+ }
+
+ err = grub_tpm2_protector_check_args (&grub_tpm2_protector_ctx);
+
+ /* This command only initializes the protector, so nothing else to do. */
+
+ return err;
+}
+
+static grub_err_t
+grub_tpm2_protector_clear_cmd_handler (grub_extcmd_context_t ctxt __attribute__ ((unused)),
+ int argc,
+ char **args __attribute__ ((unused)))
+{
+ if (argc)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("tpm2_key_protector_clear accepts no arguments"));
+
+ grub_free ((void *) grub_tpm2_protector_ctx.keyfile);
+ grub_memset (&grub_tpm2_protector_ctx, 0, sizeof (grub_tpm2_protector_ctx));
+
+ return GRUB_ERR_NONE;
+}
+
+static struct grub_key_protector grub_tpm2_key_protector =
+ {
+ .name = "tpm2",
+ .recover_key = grub_tpm2_protector_recover_key
+ };
+
+GRUB_MOD_INIT (tpm2)
+{
+ grub_tpm2_protector_init_cmd =
+ grub_register_extcmd ("tpm2_key_protector_init",
+ grub_tpm2_protector_init_cmd_handler, 0,
+ N_("[-m mode] "
+ "[-p pcr_list] "
+ "[-b pcr_bank] "
+ "[-T tpm2_key_file_path] "
+ "[-k sealed_key_file_path] "
+ "[-s srk_handle] "
+ "[-a asymmetric_key_type] "
+ "[-n nv_index]"),
+ N_("Initialize the TPM2 key protector."),
+ grub_tpm2_protector_init_cmd_options);
+ grub_tpm2_protector_clear_cmd =
+ grub_register_extcmd ("tpm2_key_protector_clear",
+ grub_tpm2_protector_clear_cmd_handler, 0, NULL,
+ N_("Clear the TPM2 key protector if previously initialized."),
+ NULL);
+ grub_key_protector_register (&grub_tpm2_key_protector);
+}
+
+GRUB_MOD_FINI (tpm2)
+{
+ grub_free ((void *) grub_tpm2_protector_ctx.keyfile);
+ grub_memset (&grub_tpm2_protector_ctx, 0, sizeof (grub_tpm2_protector_ctx));
+
+ grub_key_protector_unregister (&grub_tpm2_key_protector);
+ grub_unregister_extcmd (grub_tpm2_protector_clear_cmd);
+ grub_unregister_extcmd (grub_tpm2_protector_init_cmd);
+}
diff --git a/grub-core/tpm2/tpm2key.asn b/grub-core/tpm2/tpm2key.asn
new file mode 100644
index 000000000..e3b6a03e0
--- /dev/null
+++ b/grub-core/tpm2/tpm2key.asn
@@ -0,0 +1,31 @@
+--
+-- TPM 2.0 key file format
+-- To generate tpm2key_asn1_tab.c: asn1Parser tpm2key.asn
+--
+TPM2KEY {}
+DEFINITIONS IMPLICIT TAGS ::=
+
+BEGIN
+
+TPMPolicy ::= SEQUENCE {
+ CommandCode [0] EXPLICIT INTEGER,
+ CommandPolicy [1] EXPLICIT OCTET STRING
+}
+
+TPMAuthPolicy ::= SEQUENCE {
+ Name [0] EXPLICIT UTF8String OPTIONAL,
+ Policy [1] EXPLICIT SEQUENCE OF TPMPolicy
+}
+
+TPMKey ::= SEQUENCE {
+ type OBJECT IDENTIFIER,
+ emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL,
+ policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL,
+ secret [2] EXPLICIT OCTET STRING OPTIONAL,
+ authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL,
+ parent INTEGER,
+ pubkey OCTET STRING,
+ privkey OCTET STRING
+}
+
+END
diff --git a/grub-core/tpm2/tpm2key.c b/grub-core/tpm2/tpm2key.c
new file mode 100644
index 000000000..15545c27b
--- /dev/null
+++ b/grub-core/tpm2/tpm2key.c
@@ -0,0 +1,443 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2023 SUSE LLC
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/libtasn1.h>
+#include <grub/list.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/tpm2key.h>
+
+extern asn1_static_node tpm2key_asn1_tab[];
+const char *sealed_key_oid = "2.23.133.10.1.5";
+
+static int
+asn1_allocate_and_read (asn1_node node, const char *name, void **content, grub_size_t *content_size)
+{
+ grub_uint8_t *tmpstr = NULL;
+ int tmpstr_size = 0;
+ int ret;
+
+ if (content == NULL)
+ return ASN1_MEM_ERROR;
+
+ ret = asn1_read_value (node, name, NULL, &tmpstr_size);
+ if (ret != ASN1_MEM_ERROR)
+ return ret;
+
+ tmpstr = grub_malloc (tmpstr_size);
+ if (tmpstr == NULL)
+ return ASN1_MEM_ERROR;
+
+ ret = asn1_read_value (node, name, tmpstr, &tmpstr_size);
+ if (ret != ASN1_SUCCESS)
+ return ret;
+
+ *content = tmpstr;
+ *content_size = tmpstr_size;
+
+ return ASN1_SUCCESS;
+}
+
+static int
+asn1_read_uint32 (asn1_node node, const char *name, grub_uint32_t *out)
+{
+ grub_uint32_t tmp = 0;
+ grub_uint8_t *ptr;
+ void *data = NULL;
+ grub_size_t data_size;
+ int ret;
+
+ ret = asn1_allocate_and_read (node, name, &data, &data_size);
+ if (ret != ASN1_SUCCESS)
+ return ret;
+
+ if (data_size > 4)
+ {
+ ret = ASN1_MEM_ERROR;
+ goto error;
+ }
+
+ /* convert the big-endian integer to host uint32 */
+ ptr = (grub_uint8_t *)&tmp + (4 - data_size);
+ grub_memcpy (ptr, data, data_size);
+ tmp = grub_be_to_cpu32 (tmp);
+
+ *out = tmp;
+error:
+ if (data)
+ grub_free (data);
+ return ret;
+}
+
+grub_err_t
+grub_tpm2key_start_parsing (asn1_node *parsed_tpm2key, void *data, grub_size_t size)
+{
+ asn1_node tpm2key;
+ asn1_node tpm2key_asn1 = NULL;
+ void *type_oid = NULL;
+ grub_size_t type_oid_size = 0;
+ void *empty_auth = NULL;
+ grub_size_t empty_auth_size = 0;
+ int tmp_size = 0;
+ int ret;
+ grub_err_t err;
+
+ /*
+ TPMKey ::= SEQUENCE {
+ type OBJECT IDENTIFIER,
+ emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL,
+ policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL,
+ secret [2] EXPLICIT OCTET STRING OPTIONAL,
+ authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL,
+ parent INTEGER,
+ pubkey OCTET STRING,
+ privkey OCTET STRING
+ }
+ */
+ ret = asn1_array2tree (tpm2key_asn1_tab, &tpm2key_asn1, NULL);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to parse TPM2KEY ASN.1 array"));
+
+ ret = asn1_create_element (tpm2key_asn1, "TPM2KEY.TPMKey", &tpm2key);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to create TPM2KEY.TPMKey"));
+
+ ret = asn1_der_decoding (&tpm2key, data, size, NULL);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to decode TPM2KEY DER"));
+
+ /* Check if 'type' is Sealed Key or not */
+ ret = asn1_allocate_and_read (tpm2key, "type", &type_oid, &type_oid_size);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_FILE_TYPE,
+ N_("Not a valid TPM2KEY file"));
+
+ if (grub_memcmp (sealed_key_oid, type_oid, type_oid_size) != 0)
+ {
+ err = grub_error (GRUB_ERR_BAD_FILE_TYPE,
+ N_("Not a valid TPM2KEY file"));
+ goto error;
+ }
+
+ /* 'emptyAuth' must be 'TRUE' since we don't support password authorization */
+ ret = asn1_allocate_and_read (tpm2key, "emptyAuth", &empty_auth, &empty_auth_size);
+ if (ret != ASN1_SUCCESS || grub_strncmp ("TRUE", empty_auth, empty_auth_size) != 0)
+ {
+ err = grub_error (GRUB_ERR_BAD_ARGUMENT, N_("emptyAuth not TRUE"));
+ goto error;
+ }
+
+ /* 'secret' should not be in a sealed key */
+ ret = asn1_read_value (tpm2key, "secret", NULL, &tmp_size);
+ if (ret != ASN1_ELEMENT_NOT_FOUND)
+ {
+ err = grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("\"secret\" not allowed for Sealed Key"));
+ goto error;
+ }
+
+ *parsed_tpm2key = tpm2key;
+
+ err = GRUB_ERR_NONE;
+
+error:
+ grub_free (type_oid);
+ grub_free (empty_auth);
+
+ return err;
+}
+
+void
+grub_tpm2key_end_parsing (asn1_node tpm2key)
+{
+ asn1_delete_structure (&tpm2key);
+ tpm2key = NULL;
+}
+
+grub_err_t
+grub_tpm2key_get_parent (asn1_node tpm2key, grub_uint32_t *parent)
+{
+ int ret;
+
+ if (parent == NULL)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("NULL pointer detected"));
+
+ if (tpm2key == NULL)
+ return grub_error (GRUB_ERR_READ_ERROR, N_("Invalid parent node"));
+
+ ret = asn1_read_uint32 (tpm2key, "parent", parent);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_READ_ERROR, N_("Failed to retrieve parent"));
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+tpm2key_get_octstring (asn1_node tpm2key, const char *name, void **data, grub_size_t *size)
+{
+ int ret;
+
+ if (name == NULL || data == NULL || size == NULL)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("Invalid parameter(s)"));
+
+ if (tpm2key == NULL)
+ return grub_error (GRUB_ERR_READ_ERROR, N_("Invalid %s node"), name);
+
+ ret = asn1_allocate_and_read (tpm2key, name, data, size);
+ if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_READ_ERROR,
+ N_("Failed to retrieve %s"),
+ name);
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tpm2key_get_pubkey (asn1_node tpm2key, void **data, grub_size_t *size)
+{
+ return tpm2key_get_octstring (tpm2key, "pubkey", data, size);
+}
+
+grub_err_t
+grub_tpm2key_get_privkey (asn1_node tpm2key, void **data, grub_size_t *size)
+{
+ return tpm2key_get_octstring (tpm2key, "privkey", data, size);
+}
+
+/*
+ * The string to fetch 'Policy' from 'authPolicy':
+ * authPolicy.?XX.Policy
+ */
+#define AUTHPOLICY_POL_MAX_STR "authPolicy.?XX.Policy"
+#define AUTHPOLICY_POL_MAX (sizeof (AUTHPOLICY_POL_MAX_STR))
+
+/*
+ * Expected strings for CommandCode and CommandPolicy:
+ * policy.?XX.CommandCode
+ * policy.?XX.CommandPolicy
+ * authPolicy.?XX.Policy.?YY.CommandCode
+ * authPolicy.?XX.Policy.?YY.CommandPolicy
+ */
+#define CMD_CODE_MAX_STR AUTHPOLICY_POL_MAX_STR".?YY.CommandCode"
+#define CMD_POL_MAX_STR AUTHPOLICY_POL_MAX_STR".?YY.CommandPolicy"
+#define CMD_CODE_MAX (sizeof (CMD_CODE_MAX_STR))
+#define CMD_POL_MAX (sizeof (CMD_POL_MAX_STR))
+
+static int
+tpm2key_get_policy_seq (asn1_node tpm2key, const char *prefix,
+ tpm2key_policy_t *policy_seq)
+{
+ tpm2key_policy_t tmp_seq = NULL;
+ tpm2key_policy_t policy = NULL;
+ int policy_n;
+ char cmd_code[CMD_CODE_MAX];
+ char cmd_pol[CMD_POL_MAX];
+ grub_size_t cmd_policy_len;
+ int i;
+ int ret;
+
+ ret = asn1_number_of_elements (tpm2key, prefix, &policy_n);
+ if (ret != ASN1_SUCCESS)
+ return ret;
+
+ /*
+ * Limit the number of policy commands to two digits (99)
+ * Although there is no upper bound for the number of policy commands,
+ * in practice, it takes one or two policy commands to unseal the key,
+ * so the 99 commands limit is more than enough.
+ */
+ if (policy_n > 100 || policy_n < 1)
+ return ASN1_VALUE_NOT_VALID;
+
+ /*
+ * Iterate the policy commands backwards since grub_list_push() prepends
+ * the item into the list.
+ */
+ for (i = policy_n; i >= 1; i--) {
+ policy = grub_zalloc (sizeof (struct tpm2key_policy));
+ if (policy == NULL)
+ {
+ ret = ASN1_MEM_ALLOC_ERROR;
+ goto error;
+ }
+ grub_snprintf (cmd_code, CMD_CODE_MAX, "%s.?%d.CommandCode", prefix, i);
+ grub_snprintf (cmd_pol, CMD_POL_MAX, "%s.?%d.CommandPolicy", prefix, i);
+
+ /* CommandCode [0] EXPLICIT INTEGER */
+ ret = asn1_read_uint32 (tpm2key, cmd_code, &policy->cmd_code);
+ if (ret != ASN1_SUCCESS)
+ return ret;
+
+ /* CommandPolicy [1] EXPLICIT OCTET STRING */
+ ret = tpm2key_get_octstring (tpm2key, cmd_pol, &policy->cmd_policy,
+ &cmd_policy_len);
+ if (ret != ASN1_SUCCESS)
+ {
+ goto error;
+ }
+ else if (cmd_policy_len > GRUB_TPM2_BUFFER_CAPACITY)
+ {
+ /*
+ * CommandPolicy is the marshalled parameters for the TPM command so
+ * it should not be larger than the maximum TPM2 buffer.
+ */
+ ret = ASN1_VALUE_NOT_VALID;
+ goto error;
+ }
+ policy->cmd_policy_len = (grub_uint16_t)cmd_policy_len;
+
+ /* Prepend the policy command into the sequence */
+ grub_list_push (GRUB_AS_LIST_P (&tmp_seq), GRUB_AS_LIST (policy));
+ }
+
+ *policy_seq = tmp_seq;
+
+ return ASN1_SUCCESS;
+
+error:
+ if (policy)
+ {
+ grub_free (policy->cmd_policy);
+ grub_free (policy);
+ }
+ grub_tpm2key_free_policy_seq (tmp_seq);
+
+ return ret;
+}
+
+grub_err_t
+grub_tpm2key_get_policy_seq (asn1_node tpm2key, tpm2key_policy_t *policy_seq)
+{
+ int ret;
+
+ ret = tpm2key_get_policy_seq (tpm2key, "policy", policy_seq);
+ if (ret == ASN1_ELEMENT_NOT_FOUND)
+ {
+ /* "policy" is optional, so it may not be available */
+ *policy_seq = NULL;
+ return GRUB_ERR_NONE;
+ }
+ else if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_READ_ERROR, N_("Failed to retrieve policy"));
+
+ return GRUB_ERR_NONE;
+}
+
+void
+grub_tpm2key_free_policy_seq (tpm2key_policy_t policy_seq)
+{
+ tpm2key_policy_t policy;
+ tpm2key_policy_t next;
+
+ if (policy_seq == NULL)
+ return;
+
+ FOR_LIST_ELEMENTS_SAFE (policy, next, policy_seq)
+ {
+ grub_free (policy->cmd_policy);
+ grub_free (policy);
+ }
+}
+
+grub_err_t
+grub_tpm2key_get_authpolicy_seq (asn1_node tpm2key, tpm2key_authpolicy_t *authpol_seq)
+{
+ tpm2key_authpolicy_t tmp_seq = NULL;
+ tpm2key_authpolicy_t authpol = NULL;
+ int authpol_n;
+ char authpol_pol[AUTHPOLICY_POL_MAX];
+ int i;
+ int ret;
+ grub_err_t err;
+
+ ret = asn1_number_of_elements (tpm2key, "authPolicy", &authpol_n);
+ if (ret == ASN1_ELEMENT_NOT_FOUND)
+ {
+ /* "authPolicy" is optional, so it may not be available */
+ *authpol_seq = NULL;
+ return GRUB_ERR_NONE;
+ }
+ else if (ret != ASN1_SUCCESS)
+ return grub_error (GRUB_ERR_READ_ERROR, N_("Failed to retrieve authPolicy"));
+
+ /* Limit the number of authPolicy elements to two digits (99) */
+ if (authpol_n > 100 || authpol_n < 1)
+ return grub_error (GRUB_ERR_OUT_OF_RANGE,
+ N_("Invalid number of authPolicy elements"));
+
+ /*
+ * Iterate the authPolicy elements backwards since grub_list_push() prepends
+ * the item into the list.
+ */
+ for (i = authpol_n; i >= 1; i--) {
+ authpol = grub_zalloc (sizeof (struct tpm2key_authpolicy));
+ if (authpol == NULL)
+ {
+ err = grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ N_("Failed to allocate memory for authPolicy"));
+ goto error;
+ }
+ grub_snprintf (authpol_pol, AUTHPOLICY_POL_MAX, "authPolicy.?%d.Policy", i);
+
+ ret = tpm2key_get_policy_seq (tpm2key, authpol_pol, &authpol->policy_seq);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = grub_error (GRUB_ERR_READ_ERROR,
+ N_("Failed to retrieve policy from authPolicy"));
+ goto error;
+ }
+
+ /* Prepend the authPolicy element into the sequence */
+ grub_list_push (GRUB_AS_LIST_P (&tmp_seq), GRUB_AS_LIST (authpol));
+ }
+
+ *authpol_seq = tmp_seq;
+
+ return GRUB_ERR_NONE;
+
+error:
+ if (authpol)
+ {
+ grub_tpm2key_free_policy_seq (authpol->policy_seq);
+ grub_free (authpol);
+ }
+
+ grub_tpm2key_free_authpolicy_seq (tmp_seq);
+
+ return err;
+}
+
+void
+grub_tpm2key_free_authpolicy_seq (tpm2key_authpolicy_t authpol_seq)
+{
+ tpm2key_authpolicy_t authpol;
+ tpm2key_authpolicy_t next;
+
+ if (authpol_seq == NULL)
+ return;
+
+ FOR_LIST_ELEMENTS_SAFE (authpol, next, authpol_seq)
+ {
+ grub_tpm2key_free_policy_seq (authpol->policy_seq);
+ grub_free (authpol);
+ }
+}
diff --git a/grub-core/tpm2/tpm2key_asn1_tab.c b/grub-core/tpm2/tpm2key_asn1_tab.c
new file mode 100644
index 000000000..551fc46ec
--- /dev/null
+++ b/grub-core/tpm2/tpm2key_asn1_tab.c
@@ -0,0 +1,41 @@
+/*
+ * This file is generated by 'asn1Parser tpm2key.asn' and the '#include'
+ * headers are replaced with the ones in grub2.
+ * - 'grub/mm.h' for the definition of 'NULL'
+ * - 'grub/libtasn1.h' for the definition of 'asn1_static_node'
+ */
+
+#include <grub/mm.h>
+#include <grub/libtasn1.h>
+
+const asn1_static_node tpm2key_asn1_tab[] = {
+ { "TPM2KEY", 536875024, NULL },
+ { NULL, 1073741836, NULL },
+ { "TPMPolicy", 1610612741, NULL },
+ { "CommandCode", 1610620931, NULL },
+ { NULL, 2056, "0"},
+ { "CommandPolicy", 536879111, NULL },
+ { NULL, 2056, "1"},
+ { "TPMAuthPolicy", 1610612741, NULL },
+ { "Name", 1610637346, NULL },
+ { NULL, 2056, "0"},
+ { "Policy", 536879115, NULL },
+ { NULL, 1073743880, "1"},
+ { NULL, 2, "TPMPolicy"},
+ { "TPMKey", 536870917, NULL },
+ { "type", 1073741836, NULL },
+ { "emptyAuth", 1610637316, NULL },
+ { NULL, 2056, "0"},
+ { "policy", 1610637323, NULL },
+ { NULL, 1073743880, "1"},
+ { NULL, 2, "TPMPolicy"},
+ { "secret", 1610637319, NULL },
+ { NULL, 2056, "2"},
+ { "authPolicy", 1610637323, NULL },
+ { NULL, 1073743880, "3"},
+ { NULL, 2, "TPMAuthPolicy"},
+ { "parent", 1073741827, NULL },
+ { "pubkey", 1073741831, NULL },
+ { "privkey", 7, NULL },
+ { NULL, 0, NULL }
+};
diff --git a/include/grub/tpm2/internal/args.h b/include/grub/tpm2/internal/args.h
new file mode 100644
index 000000000..606f4dfa2
--- /dev/null
+++ b/include/grub/tpm2/internal/args.h
@@ -0,0 +1,51 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_INTERNAL_ARGS_HEADER
+#define GRUB_TPM2_INTERNAL_ARGS_HEADER 1
+
+#include <grub/err.h>
+#include <grub/tpm2/tpm2.h>
+
+struct grub_srk_type
+{
+ TPMI_ALG_PUBLIC type;
+ TPMI_ALG_HASH nameAlg;
+ TPM_KEY_BITS aes_bits;
+ union {
+ TPM_KEY_BITS rsa_bits;
+ TPM_ECC_CURVE ecc_curve;
+ } detail;
+};
+typedef struct grub_srk_type grub_srk_type_t;
+
+grub_err_t
+grub_tpm2_protector_parse_pcrs (char *value, grub_uint8_t *pcrs,
+ grub_uint8_t *pcr_count);
+
+grub_err_t
+grub_tpm2_protector_parse_asymmetric (const char *value,
+ grub_srk_type_t *srk_type);
+
+grub_err_t
+grub_tpm2_protector_parse_bank (const char *value, TPM_ALG_ID *bank);
+
+grub_err_t
+grub_tpm2_protector_parse_tpm_handle (const char *value, TPM_HANDLE *handle);
+
+#endif /* ! GRUB_TPM2_INTERNAL_ARGS_HEADER */
diff --git a/include/grub/tpm2/tpm2key.h b/include/grub/tpm2/tpm2key.h
new file mode 100644
index 000000000..df46203e3
--- /dev/null
+++ b/include/grub/tpm2/tpm2key.h
@@ -0,0 +1,83 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2023 SUSE LLC
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_TPM2_TPM2KEY_HEADER
+#define GRUB_TPM2_TPM2KEY_HEADER 1
+
+#include <grub/types.h>
+#include <grub/libtasn1.h>
+
+/*
+ * TPMPolicy ::= SEQUENCE {
+ * CommandCode [0] EXPLICIT INTEGER,
+ * CommandPolicy [1] EXPLICIT OCTET STRING
+ * }
+ */
+struct tpm2key_policy {
+ struct tpm2key_policy *next;
+ struct tpm2key_policy **prev;
+ grub_uint32_t cmd_code;
+ void *cmd_policy;
+ grub_uint16_t cmd_policy_len;
+};
+typedef struct tpm2key_policy *tpm2key_policy_t;
+
+/*
+ * TPMAuthPolicy ::= SEQUENCE {
+ * Name [0] EXPLICIT UTF8String OPTIONAL,
+ * Policy [1] EXPLICIT SEQUENCE OF TPMPolicy
+ * }
+ *
+ * Name is not a necessary part to unseal the key. Ignore it.
+ */
+struct tpm2key_authpolicy {
+ struct tpm2key_authpolicy *next;
+ struct tpm2key_authpolicy **prev;
+ /* char *name; */
+ tpm2key_policy_t policy_seq;
+};
+typedef struct tpm2key_authpolicy *tpm2key_authpolicy_t;
+
+grub_err_t
+grub_tpm2key_start_parsing (asn1_node *parsed_tpm2key, void *data, grub_size_t size);
+
+void
+grub_tpm2key_end_parsing (asn1_node tpm2key);
+
+grub_err_t
+grub_tpm2key_get_parent (asn1_node tpm2key, grub_uint32_t *parent);
+
+grub_err_t
+grub_tpm2key_get_pubkey (asn1_node tpm2key, void **data, grub_size_t *size);
+
+grub_err_t
+grub_tpm2key_get_privkey (asn1_node tpm2key, void **data, grub_size_t *size);
+
+grub_err_t
+grub_tpm2key_get_policy_seq (asn1_node tpm2key, tpm2key_policy_t *policy_seq);
+
+void
+grub_tpm2key_free_policy_seq (tpm2key_policy_t policy_seq);
+
+grub_err_t
+grub_tpm2key_get_authpolicy_seq (asn1_node tpm2key, tpm2key_authpolicy_t *authpol_seq);
+
+void
+grub_tpm2key_free_authpolicy_seq (tpm2key_authpolicy_t authpol_seq);
+
+#endif /* GRUB_TPM2_TPM2KEY_HEADER */
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 12/20] cryptodisk: Support key protectors
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (10 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 11/20] key_protector: Add TPM2 Key Protector Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 13/20] util/grub-protect: Add new tool Gary Lin via Grub-devel
` (7 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Hernan Gatta <hegatta@linux.microsoft.com>
Add a new parameter to cryptomount to support the key protectors framework: -P.
The parameter is used to automatically retrieve a key from specified key
protectors. The parameter may be repeated to specify any number of key
protectors. These are tried in order until one provides a usable key for any
given disk.
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Michael Chang <mchang@suse.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
Makefile.util.def | 1 +
grub-core/disk/cryptodisk.c | 172 +++++++++++++++++++++++++++++-------
include/grub/cryptodisk.h | 16 ++++
3 files changed, 158 insertions(+), 31 deletions(-)
diff --git a/Makefile.util.def b/Makefile.util.def
index b53afb1d3..19ad5a96f 100644
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -40,6 +40,7 @@ library = {
common = grub-core/disk/luks.c;
common = grub-core/disk/luks2.c;
common = grub-core/disk/geli.c;
+ common = grub-core/disk/key_protector.c;
common = grub-core/disk/cryptodisk.c;
common = grub-core/disk/AFSplitter.c;
common = grub-core/lib/pbkdf2.c;
diff --git a/grub-core/disk/cryptodisk.c b/grub-core/disk/cryptodisk.c
index 2246af51b..b7648ffb7 100644
--- a/grub-core/disk/cryptodisk.c
+++ b/grub-core/disk/cryptodisk.c
@@ -26,6 +26,7 @@
#include <grub/file.h>
#include <grub/procfs.h>
#include <grub/partition.h>
+#include <grub/key_protector.h>
#ifdef GRUB_UTIL
#include <grub/emu/hostdisk.h>
@@ -44,7 +45,8 @@ enum
OPTION_KEYFILE,
OPTION_KEYFILE_OFFSET,
OPTION_KEYFILE_SIZE,
- OPTION_HEADER
+ OPTION_HEADER,
+ OPTION_PROTECTOR
};
static const struct grub_arg_option options[] =
@@ -58,6 +60,8 @@ static const struct grub_arg_option options[] =
{"keyfile-offset", 'O', 0, N_("Key file offset (bytes)"), 0, ARG_TYPE_INT},
{"keyfile-size", 'S', 0, N_("Key file data size (bytes)"), 0, ARG_TYPE_INT},
{"header", 'H', 0, N_("Read header from file"), 0, ARG_TYPE_STRING},
+ {"protector", 'P', GRUB_ARG_OPTION_REPEATABLE,
+ N_("Unlock volume(s) using key protector(s)."), 0, ARG_TYPE_STRING},
{0, 0, 0, 0, 0, 0}
};
@@ -1061,6 +1065,7 @@ grub_cryptodisk_scan_device_real (const char *name,
grub_err_t ret = GRUB_ERR_NONE;
grub_cryptodisk_t dev;
grub_cryptodisk_dev_t cr;
+ int i;
struct cryptodisk_read_hook_ctx read_hook_data = {0};
int askpass = 0;
char *part = NULL;
@@ -1113,41 +1118,112 @@ grub_cryptodisk_scan_device_real (const char *name,
goto error_no_close;
if (!dev)
continue;
+ break;
+ }
- if (!cargs->key_len)
- {
- /* Get the passphrase from the user, if no key data. */
- askpass = 1;
- part = grub_partition_get_name (source->partition);
- grub_printf_ (N_("Enter passphrase for %s%s%s (%s): "), source->name,
- source->partition != NULL ? "," : "",
- part != NULL ? part : N_("UNKNOWN"),
- dev->uuid);
- grub_free (part);
-
- cargs->key_data = grub_malloc (GRUB_CRYPTODISK_MAX_PASSPHRASE);
- if (cargs->key_data == NULL)
- goto error_no_close;
-
- if (!grub_password_get ((char *) cargs->key_data, GRUB_CRYPTODISK_MAX_PASSPHRASE))
- {
- grub_error (GRUB_ERR_BAD_ARGUMENT, "passphrase not supplied");
- goto error;
- }
- cargs->key_len = grub_strlen ((char *) cargs->key_data);
- }
+ if (dev == NULL)
+ {
+ grub_error (GRUB_ERR_BAD_MODULE,
+ "no cryptodisk module can handle this device");
+ goto error_no_close;
+ }
- ret = cr->recover_key (source, dev, cargs);
- if (ret != GRUB_ERR_NONE)
- goto error;
+ if (cargs->protectors)
+ {
+ for (i = 0; cargs->protectors[i]; i++)
+ {
+ if (cargs->key_cache[i].invalid)
+ continue;
+
+ if (cargs->key_cache[i].key == NULL)
+ {
+ ret = grub_key_protector_recover_key (cargs->protectors[i],
+ &cargs->key_cache[i].key,
+ &cargs->key_cache[i].key_len);
+ if (ret != GRUB_ERR_NONE)
+ {
+ if (grub_errno)
+ {
+ grub_print_error ();
+ grub_errno = GRUB_ERR_NONE;
+ }
+
+ grub_dprintf ("cryptodisk",
+ "failed to recover a key from key protector "
+ "%s, will not try it again for any other "
+ "disks, if any, during this invocation of "
+ "cryptomount\n",
+ cargs->protectors[i]);
+
+ cargs->key_cache[i].invalid = 1;
+ continue;
+ }
+ }
+
+ cargs->key_data = cargs->key_cache[i].key;
+ cargs->key_len = cargs->key_cache[i].key_len;
+
+ ret = cr->recover_key (source, dev, cargs);
+ if (ret != GRUB_ERR_NONE)
+ {
+ part = grub_partition_get_name (source->partition);
+ grub_dprintf ("cryptodisk",
+ "recovered a key from key protector %s but it "
+ "failed to unlock %s%s%s (%s)\n",
+ cargs->protectors[i], source->name,
+ source->partition != NULL ? "," : "",
+ part != NULL ? part : N_("UNKNOWN"), dev->uuid);
+ grub_free (part);
+ continue;
+ }
+ else
+ {
+ ret = grub_cryptodisk_insert (dev, name, source);
+ if (ret != GRUB_ERR_NONE)
+ goto error;
+ goto cleanup;
+ }
+ }
- ret = grub_cryptodisk_insert (dev, name, source);
- if (ret != GRUB_ERR_NONE)
+ part = grub_partition_get_name (source->partition);
+ grub_error (GRUB_ERR_ACCESS_DENIED,
+ N_("no key protector provided a usable key for %s%s%s (%s)"),
+ source->name, source->partition != NULL ? "," : "",
+ part != NULL ? part : N_("UNKNOWN"), dev->uuid);
+ grub_free (part);
goto error;
+ }
+
+ if (!cargs->key_len)
+ {
+ /* Get the passphrase from the user, if no key data. */
+ askpass = 1;
+ part = grub_partition_get_name (source->partition);
+ grub_printf_ (N_("Enter passphrase for %s%s%s (%s): "), source->name,
+ source->partition != NULL ? "," : "",
+ part != NULL ? part : N_("UNKNOWN"), dev->uuid);
+ grub_free (part);
+
+ cargs->key_data = grub_malloc (GRUB_CRYPTODISK_MAX_PASSPHRASE);
+ if (cargs->key_data == NULL)
+ goto error;
+
+ if (!grub_password_get ((char *) cargs->key_data, GRUB_CRYPTODISK_MAX_PASSPHRASE))
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, "passphrase not supplied");
+ goto error;
+ }
+ cargs->key_len = grub_strlen ((char *) cargs->key_data);
+ }
+
+ ret = cr->recover_key (source, dev, cargs);
+ if (ret != GRUB_ERR_NONE)
+ goto error;
+
+ ret = grub_cryptodisk_insert (dev, name, source);
+ if (ret != GRUB_ERR_NONE)
+ goto error;
- goto cleanup;
- }
- grub_error (GRUB_ERR_BAD_MODULE, "no cryptodisk module can handle this device");
goto cleanup;
error:
@@ -1259,6 +1335,20 @@ grub_cryptodisk_scan_device (const char *name,
return ret;
}
+static void
+grub_cryptodisk_clear_key_cache (struct grub_cryptomount_args *cargs)
+{
+ int i;
+
+ if (cargs->key_cache == NULL || cargs->protectors == NULL)
+ return;
+
+ for (i = 0; cargs->protectors[i]; i++)
+ grub_free (cargs->key_cache[i].key);
+
+ grub_free (cargs->key_cache);
+}
+
static grub_err_t
grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
{
@@ -1271,6 +1361,10 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
if (grub_cryptodisk_list == NULL)
return grub_error (GRUB_ERR_BAD_MODULE, "no cryptodisk modules loaded");
+ if (state[OPTION_PASSWORD].set && state[OPTION_PROTECTOR].set) /* password and key protector */
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ "a password and a key protector cannot both be set");
+
if (state[OPTION_PASSWORD].set) /* password */
{
cargs.key_data = (grub_uint8_t *) state[OPTION_PASSWORD].arg;
@@ -1363,6 +1457,15 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
return grub_errno;
}
+ if (state[OPTION_PROTECTOR].set) /* key protector(s) */
+ {
+ cargs.key_cache = grub_zalloc (state[OPTION_PROTECTOR].set * sizeof (*cargs.key_cache));
+ if (cargs.key_cache == NULL)
+ return grub_error (GRUB_ERR_OUT_OF_MEMORY,
+ "no memory for key protector key cache");
+ cargs.protectors = state[OPTION_PROTECTOR].args;
+ }
+
if (state[OPTION_UUID].set) /* uuid */
{
int found_uuid;
@@ -1371,6 +1474,7 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
dev = grub_cryptodisk_get_by_uuid (args[0]);
if (dev)
{
+ grub_cryptodisk_clear_key_cache (&cargs);
grub_dprintf ("cryptodisk",
"already mounted as crypto%lu\n", dev->id);
return GRUB_ERR_NONE;
@@ -1379,6 +1483,7 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
cargs.check_boot = state[OPTION_BOOT].set;
cargs.search_uuid = args[0];
found_uuid = grub_device_iterate (&grub_cryptodisk_scan_device, &cargs);
+ grub_cryptodisk_clear_key_cache (&cargs);
if (found_uuid)
return GRUB_ERR_NONE;
@@ -1398,6 +1503,7 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
{
cargs.check_boot = state[OPTION_BOOT].set;
grub_device_iterate (&grub_cryptodisk_scan_device, &cargs);
+ grub_cryptodisk_clear_key_cache (&cargs);
return GRUB_ERR_NONE;
}
else
@@ -1421,6 +1527,7 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
disk = grub_disk_open (diskname);
if (!disk)
{
+ grub_cryptodisk_clear_key_cache (&cargs);
if (disklast)
*disklast = ')';
return grub_errno;
@@ -1431,12 +1538,14 @@ grub_cmd_cryptomount (grub_extcmd_context_t ctxt, int argc, char **args)
{
grub_dprintf ("cryptodisk", "already mounted as crypto%lu\n", dev->id);
grub_disk_close (disk);
+ grub_cryptodisk_clear_key_cache (&cargs);
if (disklast)
*disklast = ')';
return GRUB_ERR_NONE;
}
dev = grub_cryptodisk_scan_device_real (diskname, disk, &cargs);
+ grub_cryptodisk_clear_key_cache (&cargs);
grub_disk_close (disk);
if (disklast)
@@ -1590,6 +1699,7 @@ GRUB_MOD_INIT (cryptodisk)
cmd = grub_register_extcmd ("cryptomount", grub_cmd_cryptomount, 0,
N_("[ [-p password] | [-k keyfile"
" [-O keyoffset] [-S keysize] ] ] [-H file]"
+ " [-P protector [-P protector ...]]"
" <SOURCE|-u UUID|-a|-b>"),
N_("Mount a crypto device."), options);
grub_procfs_register ("luks_script", &luks_script);
diff --git a/include/grub/cryptodisk.h b/include/grub/cryptodisk.h
index d94df68b6..0b41e249e 100644
--- a/include/grub/cryptodisk.h
+++ b/include/grub/cryptodisk.h
@@ -70,6 +70,18 @@ typedef gcry_err_code_t
(*grub_cryptodisk_rekey_func_t) (struct grub_cryptodisk *dev,
grub_uint64_t zoneno);
+struct grub_cryptomount_cached_key
+{
+ grub_uint8_t *key;
+ grub_size_t key_len;
+
+ /*
+ * The key protector associated with this cache entry failed, so avoid it
+ * even if the cached entry (an instance of this structure) is empty.
+ */
+ int invalid;
+};
+
struct grub_cryptomount_args
{
/* scan: Flag to indicate that only bootable volumes should be decrypted */
@@ -81,6 +93,10 @@ struct grub_cryptomount_args
/* recover_key: Length of key_data */
grub_size_t key_len;
grub_file_t hdr_file;
+ /* recover_key: Names of the key protectors to use (NULL-terminated) */
+ char **protectors;
+ /* recover_key: Key cache to avoid invoking the same key protector twice */
+ struct grub_cryptomount_cached_key *key_cache;
};
typedef struct grub_cryptomount_args *grub_cryptomount_args_t;
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 13/20] util/grub-protect: Add new tool
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (11 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 12/20] cryptodisk: Support key protectors Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 13:56 ` Stefan Berger
2024-04-19 8:30 ` [PATCH v12 14/20] tpm2: Support authorized policy Gary Lin via Grub-devel
` (6 subsequent siblings)
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Hernan Gatta <hegatta@linux.microsoft.com>
To utilize the key protectors framework, there must be a way to protect
full-disk encryption keys in the first place. The grub-protect tool
includes support for the TPM2 key protector but other protectors that
require setup ahead of time can be supported in the future.
For the TPM2 key protector, the intended flow is for a user to have a
LUKS 1 or LUKS 2-protected fully-encrypted disk. The user then creates a
new LUKS key file, say by reading /dev/urandom into a file, and creates
a new LUKS key slot for this key. Then, the user invokes the grub-protect
tool to seal this key file to a set of PCRs using the system's TPM 2.0.
The resulting sealed key file is stored in an unencrypted partition such
as the EFI System Partition (ESP) so that GRUB may read it. The user also
has to ensure the cryptomount command is included in GRUB's boot script
and that it carries the requisite key protector (-P) parameter.
Sample usage:
$ dd if=/dev/urandom of=luks-key bs=1 count=32
$ sudo cryptsetup luksAddKey /dev/sdb1 luks-key --pbkdf=pbkdf2 --hash=sha512
To seal the key with TPM 2.0 Key File (recommended):
$ sudo grub-protect --action=add \
--protector=tpm2 \
--tpm2-pcrs=0,2,4,7,9 \
--tpm2key \
--tpm2-keyfile=luks-key \
--tpm2-outfile=/boot/efi/boot/grub2/sealed.tpm
Or, to seal the key with the raw sealed key:
$ sudo grub-protect --action=add \
--protector=tpm2 \
--tpm2-pcrs=0,2,4,7,9 \
--tpm2-keyfile=luks-key \
--tpm2-outfile=/boot/efi/boot/grub2/sealed.key
Then, in the boot script, for TPM 2.0 Key File:
tpm2_key_protector_init --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
cryptomount -u <SDB1_UUID> -P tpm2
Or, for the raw sealed key:
tpm2_key_protector_init --keyfile=(hd0,gpt1)/boot/grub2/sealed.key --pcrs=0,2,4,7,9
cryptomount -u <SDB1_UUID> -P tpm2
The benefit of using TPM 2.0 Key File is that the PCR set is already
written in the key file, so there is no need to specify PCRs when
invoking tpm2_key_protector_init.
Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
Signed-off-by: Gary Lin <glin@suse.com>
---
.gitignore | 2 +
Makefile.util.def | 24 +
configure.ac | 30 +
docs/man/grub-protect.h2m | 4 +
util/grub-protect.c | 1378 +++++++++++++++++++++++++++++++++++++
5 files changed, 1438 insertions(+)
create mode 100644 docs/man/grub-protect.h2m
create mode 100644 util/grub-protect.c
diff --git a/.gitignore b/.gitignore
index 4d0dfb700..d7b7c22d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -169,6 +169,8 @@ widthspec.bin
/grub-ofpathname.exe
/grub-probe
/grub-probe.exe
+/grub-protect
+/grub-protect.exe
/grub-reboot
/grub-render-label
/grub-render-label.exe
diff --git a/Makefile.util.def b/Makefile.util.def
index 19ad5a96f..40bfe713d 100644
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -207,6 +207,30 @@ program = {
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
};
+program = {
+ name = grub-protect;
+ mansection = 1;
+
+ common = grub-core/kern/emu/argp_common.c;
+ common = grub-core/osdep/init.c;
+ common = grub-core/tpm2/args.c;
+ common = grub-core/tpm2/buffer.c;
+ common = grub-core/tpm2/mu.c;
+ common = grub-core/tpm2/tpm2.c;
+ common = grub-core/tpm2/tpm2key_asn1_tab.c;
+ common = util/grub-protect.c;
+ common = util/probe.c;
+
+ ldadd = libgrubmods.a;
+ ldadd = libgrubgcry.a;
+ ldadd = libgrubkern.a;
+ ldadd = grub-core/lib/gnulib/libgnu.a;
+ ldadd = '$(LIBTASN1)';
+ ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
+
+ condition = COND_GRUB_PROTECT;
+};
+
program = {
name = grub-mkrelpath;
mansection = 1;
diff --git a/configure.ac b/configure.ac
index 84a202c6e..3a07ab570 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,7 @@ grub_TRANSFORM([grub-mkpasswd-pbkdf2])
grub_TRANSFORM([grub-mkrelpath])
grub_TRANSFORM([grub-mkrescue])
grub_TRANSFORM([grub-probe])
+grub_TRANSFORM([grub-protect])
grub_TRANSFORM([grub-reboot])
grub_TRANSFORM([grub-script-check])
grub_TRANSFORM([grub-set-default])
@@ -2057,6 +2058,29 @@ fi
AC_SUBST([LIBZFS])
AC_SUBST([LIBNVPAIR])
+AC_ARG_ENABLE([grub-protect],
+ [AS_HELP_STRING([--enable-grub-protect],
+ [build and install the `grub-protect' utility (default=guessed)])])
+if test x"$enable_grub_protect" = xno ; then
+ grub_protect_excuse="explicitly disabled"
+fi
+
+LIBTASN1=
+if test x"$grub_protect_excuse" = x ; then
+ AC_CHECK_LIB([tasn1], [asn1_write_value], [LIBTASN1="-ltasn1"], [grub_protect_excuse="need libtasn1 library"])
+fi
+AC_SUBST([LIBTASN1])
+
+if test x"$enable_grub_protect" = xyes && test x"$grub_protect_excuse" != x ; then
+ AC_MSG_ERROR([grub-protect was explicitly requested but can't be compiled ($grub_protect_excuse)])
+fi
+if test x"$grub_protect_excuse" = x ; then
+enable_grub_protect=yes
+else
+enable_grub_protect=no
+fi
+AC_SUBST([enable_grub_protect])
+
LIBS=""
AC_SUBST([FONT_SOURCE])
@@ -2173,6 +2197,7 @@ AM_CONDITIONAL([COND_GRUB_EMU_SDL], [test x$enable_grub_emu_sdl = xyes])
AM_CONDITIONAL([COND_GRUB_EMU_PCI], [test x$enable_grub_emu_pci = xyes])
AM_CONDITIONAL([COND_GRUB_MKFONT], [test x$enable_grub_mkfont = xyes])
AM_CONDITIONAL([COND_GRUB_MOUNT], [test x$enable_grub_mount = xyes])
+AM_CONDITIONAL([COND_GRUB_PROTECT], [test x$enable_grub_protect = xyes])
AM_CONDITIONAL([COND_HAVE_FONT_SOURCE], [test x$FONT_SOURCE != x])
if test x$FONT_SOURCE != x ; then
HAVE_FONT_SOURCE=1
@@ -2300,6 +2325,11 @@ echo grub-mount: Yes
else
echo grub-mount: No "($grub_mount_excuse)"
fi
+if [ x"$grub_protect_excuse" = x ]; then
+echo grub-protect: Yes
+else
+echo grub-protect: No "($grub_protect_excuse)"
+fi
if [ x"$starfield_excuse" = x ]; then
echo starfield theme: Yes
echo With DejaVuSans font from $DJVU_FONT_SOURCE
diff --git a/docs/man/grub-protect.h2m b/docs/man/grub-protect.h2m
new file mode 100644
index 000000000..3bfa8b645
--- /dev/null
+++ b/docs/man/grub-protect.h2m
@@ -0,0 +1,4 @@
+[NAME]
+grub-protect \- protect a disk key with a key protector
+[DESCRIPTION]
+grub-protect helps to pretect a disk encryption key with a specified key protector.
diff --git a/util/grub-protect.c b/util/grub-protect.c
new file mode 100644
index 000000000..8e6a7d6ca
--- /dev/null
+++ b/util/grub-protect.c
@@ -0,0 +1,1378 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2022 Microsoft Corporation
+ * Copyright (C) 2023 SUSE LLC
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <libtasn1.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grub/emu/hostdisk.h>
+#include <grub/emu/misc.h>
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/internal/args.h>
+#include <grub/tpm2/mu.h>
+#include <grub/tpm2/tcg2.h>
+#include <grub/tpm2/tpm2.h>
+#include <grub/util/misc.h>
+
+#pragma GCC diagnostic ignored "-Wmissing-prototypes"
+#pragma GCC diagnostic ignored "-Wmissing-declarations"
+#include <argp.h>
+#pragma GCC diagnostic error "-Wmissing-prototypes"
+#pragma GCC diagnostic error "-Wmissing-declarations"
+
+#include "progname.h"
+
+/* Unprintable option keys for argp */
+typedef enum grub_protect_opt
+{
+ /* General */
+ GRUB_PROTECT_OPT_ACTION = 'a',
+ GRUB_PROTECT_OPT_PROTECTOR = 'p',
+ /* TPM2 */
+ GRUB_PROTECT_OPT_TPM2_DEVICE = 0x100,
+ GRUB_PROTECT_OPT_TPM2_PCRS,
+ GRUB_PROTECT_OPT_TPM2_ASYMMETRIC,
+ GRUB_PROTECT_OPT_TPM2_BANK,
+ GRUB_PROTECT_OPT_TPM2_SRK,
+ GRUB_PROTECT_OPT_TPM2_KEYFILE,
+ GRUB_PROTECT_OPT_TPM2_OUTFILE,
+ GRUB_PROTECT_OPT_TPM2_EVICT,
+ GRUB_PROTECT_OPT_TPM2_TPM2KEY
+} grub_protect_opt;
+
+/* Option flags to keep track of specified arguments */
+typedef enum grub_protect_arg
+{
+ /* General */
+ GRUB_PROTECT_ARG_ACTION = 1 << 0,
+ GRUB_PROTECT_ARG_PROTECTOR = 1 << 1,
+ /* TPM2 */
+ GRUB_PROTECT_ARG_TPM2_DEVICE = 1 << 2,
+ GRUB_PROTECT_ARG_TPM2_PCRS = 1 << 3,
+ GRUB_PROTECT_ARG_TPM2_ASYMMETRIC = 1 << 4,
+ GRUB_PROTECT_ARG_TPM2_BANK = 1 << 5,
+ GRUB_PROTECT_ARG_TPM2_SRK = 1 << 6,
+ GRUB_PROTECT_ARG_TPM2_KEYFILE = 1 << 7,
+ GRUB_PROTECT_ARG_TPM2_OUTFILE = 1 << 8,
+ GRUB_PROTECT_ARG_TPM2_EVICT = 1 << 9,
+ GRUB_PROTECT_ARG_TPM2_TPM2KEY = 1 << 10
+} grub_protect_arg_t;
+
+typedef enum grub_protect_protector
+{
+ GRUB_PROTECT_TYPE_ERROR,
+ GRUB_PROTECT_TYPE_TPM2
+} grub_protect_protector_t;
+
+typedef enum grub_protect_action
+{
+ GRUB_PROTECT_ACTION_ERROR,
+ GRUB_PROTECT_ACTION_ADD,
+ GRUB_PROTECT_ACTION_REMOVE
+} grub_protect_action_t;
+
+struct grub_protect_args
+{
+ grub_protect_arg_t args;
+ grub_protect_action_t action;
+ grub_protect_protector_t protector;
+
+ const char *tpm2_device;
+ grub_uint8_t tpm2_pcrs[TPM_MAX_PCRS];
+ grub_uint8_t tpm2_pcr_count;
+ grub_srk_type_t srk_type;
+ TPM_ALG_ID tpm2_bank;
+ TPM_HANDLE tpm2_srk;
+ const char *tpm2_keyfile;
+ const char *tpm2_outfile;
+ int tpm2_evict;
+ int tpm2_tpm2key;
+};
+
+static struct argp_option grub_protect_options[] =
+ {
+ /* Top-level options */
+ {
+ .name = "action",
+ .key = 'a',
+ .arg = "add|remove",
+ .flags = 0,
+ .doc =
+ N_("Add or remove a key protector to or from a key."),
+ .group = 0
+ },
+ {
+ .name = "protector",
+ .key = 'p',
+ .arg = "tpm2",
+ .flags = 0,
+ .doc =
+ N_("Key protector to use (only tpm2 is currently supported)."),
+ .group = 0
+ },
+ /* TPM2 key protector options */
+ {
+ .name = "tpm2-device",
+ .key = GRUB_PROTECT_OPT_TPM2_DEVICE,
+ .arg = "FILE",
+ .flags = 0,
+ .doc =
+ N_("Path to the TPM2 device. (default: /dev/tpm0)"),
+ .group = 0
+ },
+ {
+ .name = "tpm2-pcrs",
+ .key = GRUB_PROTECT_OPT_TPM2_PCRS,
+ .arg = "0[,1]...",
+ .flags = 0,
+ .doc =
+ N_("Comma-separated list of PCRs used to authorize key release "
+ "e.g., '7,11'. Please be aware that PCR 0~7 are used by the "
+ "firmware and the measurement result may change after a "
+ "firmware update (for baremetal systems) or a package "
+ "(OVMF/SeaBIOS/SLOF) update in the VM host. This may lead to"
+ "the failure of key unsealing. (default: 7)"),
+ .group = 0
+ },
+ {
+ .name = "tpm2-bank",
+ .key = GRUB_PROTECT_OPT_TPM2_BANK,
+ .arg = "ALG",
+ .flags = 0,
+ .doc =
+ N_("Bank of PCRs used to authorize key release: "
+ "SHA1, SHA256, SHA384, or SHA512. (default: SHA256)"),
+ .group = 0
+ },
+ {
+ .name = "tpm2-keyfile",
+ .key = GRUB_PROTECT_OPT_TPM2_KEYFILE,
+ .arg = "FILE",
+ .flags = 0,
+ .doc =
+ N_("Path to a file that contains the cleartext key to protect."),
+ .group = 0
+ },
+ {
+ .name = "tpm2-outfile",
+ .key = GRUB_PROTECT_OPT_TPM2_OUTFILE,
+ .arg = "FILE",
+ .flags = 0,
+ .doc =
+ N_("Path to the file that will contain the key after sealing (must be "
+ "accessible to GRUB during boot)."),
+ .group = 0
+ },
+ {
+ .name = "tpm2-srk",
+ .key = GRUB_PROTECT_OPT_TPM2_SRK,
+ .arg = "NUM",
+ .flags = 0,
+ .doc =
+ N_("The SRK handle if the SRK is to be made persistent."),
+ .group = 0
+ },
+ {
+ .name = "tpm2-asymmetric",
+ .key = GRUB_PROTECT_OPT_TPM2_ASYMMETRIC,
+ .arg = "TYPE",
+ .flags = 0,
+ .doc =
+ N_("The type of SRK: RSA (RSA2048), RSA3072, RSA4096, "
+ "ECC (ECC_NIST_P256), ECC_NIST_P384, ECC_NIST_P521, "
+ "and ECC_SM2_P256. (default: ECC)"),
+ .group = 0
+ },
+ {
+ .name = "tpm2-evict",
+ .key = GRUB_PROTECT_OPT_TPM2_EVICT,
+ .arg = NULL,
+ .flags = 0,
+ .doc =
+ N_("Evict a previously persisted SRK from the TPM, if any."),
+ .group = 0
+ },
+ {
+ .name = "tpm2key",
+ .key = GRUB_PROTECT_OPT_TPM2_TPM2KEY,
+ .arg = NULL,
+ .flags = 0,
+ .doc =
+ N_("Use TPM 2.0 Key File format instead of the raw format."),
+ .group = 0
+ },
+ /* End of list */
+ { 0, 0, 0, 0, 0, 0 }
+ };
+
+static int grub_protector_tpm2_fd = -1;
+
+static grub_err_t
+grub_protect_read_file (const char *filepath, void **buffer,
+ size_t *buffer_size)
+{
+ grub_err_t err;
+ FILE *f;
+ long len;
+ void *buf;
+
+ f = fopen (filepath, "rb");
+ if (f == NULL)
+ return GRUB_ERR_FILE_NOT_FOUND;
+
+ if (fseek (f, 0, SEEK_END))
+ {
+ err = GRUB_ERR_FILE_READ_ERROR;
+ goto exit1;
+ }
+
+ len = ftell (f);
+ if (len <= 0)
+ {
+ err = GRUB_ERR_FILE_READ_ERROR;
+ goto exit1;
+ }
+
+ rewind (f);
+
+ buf = grub_malloc (len);
+ if (buf == NULL)
+ {
+ err = GRUB_ERR_OUT_OF_MEMORY;
+ goto exit1;
+ }
+
+ if (fread (buf, len, 1, f) != 1)
+ {
+ err = GRUB_ERR_FILE_READ_ERROR;
+ goto exit2;
+ }
+
+ *buffer = buf;
+ *buffer_size = len;
+
+ buf = NULL;
+ err = GRUB_ERR_NONE;
+
+exit2:
+ grub_free (buf);
+
+exit1:
+ fclose (f);
+
+ return err;
+}
+
+static grub_err_t
+grub_protect_write_file (const char *filepath, void *buffer, size_t buffer_size)
+{
+ grub_err_t err;
+ FILE *f;
+
+ f = fopen (filepath, "wb");
+ if (f == NULL)
+ return GRUB_ERR_FILE_NOT_FOUND;
+
+ if (fwrite (buffer, buffer_size, 1, f) != 1)
+ {
+ err = GRUB_ERR_WRITE_ERROR;
+ goto exit1;
+ }
+
+ err = GRUB_ERR_NONE;
+
+exit1:
+ fclose (f);
+
+ return err;
+}
+
+grub_err_t
+grub_tcg2_get_max_output_size (grub_size_t *size)
+{
+ if (size == NULL)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ *size = GRUB_TPM2_BUFFER_CAPACITY;
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tcg2_submit_command (grub_size_t input_size, grub_uint8_t *input,
+ grub_size_t output_size, grub_uint8_t *output)
+{
+ static const grub_size_t header_size = sizeof (grub_uint16_t) +
+ (2 * sizeof(grub_uint32_t));
+
+ if (write (grub_protector_tpm2_fd, input, input_size) != input_size)
+ return GRUB_ERR_BAD_DEVICE;
+
+ if (read (grub_protector_tpm2_fd, output, output_size) < header_size)
+ return GRUB_ERR_BAD_DEVICE;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_tpm2_open_device (const char *dev_node)
+{
+ if (grub_protector_tpm2_fd != -1)
+ return GRUB_ERR_NONE;
+
+ grub_protector_tpm2_fd = open (dev_node, O_RDWR);
+ if (grub_protector_tpm2_fd == -1)
+ {
+ fprintf (stderr, _("Could not open TPM device (%s).\n"), strerror (errno));
+ return GRUB_ERR_FILE_NOT_FOUND;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_tpm2_close_device (void)
+{
+ int err;
+
+ if (grub_protector_tpm2_fd == -1)
+ return GRUB_ERR_NONE;
+
+ err = close (grub_protector_tpm2_fd);
+ if (err != GRUB_ERR_NONE)
+ {
+ fprintf (stderr, _("Could not close TPM device (Error: %u).\n"), errno);
+ return GRUB_ERR_IO;
+ }
+
+ grub_protector_tpm2_fd = -1;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_tpm2_get_policy_digest (struct grub_protect_args *args,
+ TPM2B_DIGEST *digest)
+{
+ TPM_RC rc;
+ TPML_PCR_SELECTION pcr_sel = {
+ .count = 1,
+ .pcrSelections = {
+ {
+ .hash = args->tpm2_bank,
+ .sizeOfSelect = 3,
+ .pcrSelect = { 0 }
+ },
+ }
+ };
+ TPML_PCR_SELECTION pcr_sel_out = { 0 };
+ TPML_DIGEST pcr_values = { 0 };
+ TPM2B_DIGEST pcr_digest = { 0 };
+ grub_size_t pcr_digest_len;
+ TPM2B_MAX_BUFFER pcr_concat = { 0 };
+ grub_size_t pcr_concat_len;
+ grub_uint8_t *pcr_cursor;
+ TPM2B_NONCE nonce = { 0 };
+ TPM2B_ENCRYPTED_SECRET salt = { 0 };
+ TPMT_SYM_DEF symmetric = { 0 };
+ TPMI_SH_AUTH_SESSION session = 0;
+ TPM2B_DIGEST policy_digest = { 0 };
+ grub_uint8_t i;
+ grub_err_t err;
+
+ /* PCR Read */
+ for (i = 0; i < args->tpm2_pcr_count; i++)
+ TPMS_PCR_SELECTION_SelectPCR (&pcr_sel.pcrSelections[0], args->tpm2_pcrs[i]);
+
+ rc = TPM2_PCR_Read (NULL, &pcr_sel, NULL, &pcr_sel_out, &pcr_values, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to read PCRs (TPM2_PCR_Read: 0x%x).\n"), rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ if ((pcr_sel_out.count != pcr_sel.count) ||
+ (pcr_sel.pcrSelections[0].sizeOfSelect !=
+ pcr_sel_out.pcrSelections[0].sizeOfSelect))
+ {
+ fprintf (stderr, _("Could not read all the specified PCRs.\n"));
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* Compute PCR Digest */
+ switch (args->tpm2_bank)
+ {
+ case TPM_ALG_SHA1:
+ pcr_digest_len = TPM_SHA1_DIGEST_SIZE;
+ break;
+ case TPM_ALG_SHA256:
+ pcr_digest_len = TPM_SHA256_DIGEST_SIZE;
+ break;
+ case TPM_ALG_SHA384:
+ pcr_digest_len = TPM_SHA384_DIGEST_SIZE;
+ break;
+ case TPM_ALG_SHA512:
+ pcr_digest_len = TPM_SHA512_DIGEST_SIZE;
+ break;
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ pcr_concat_len = pcr_digest_len * args->tpm2_pcr_count;
+ if (pcr_concat_len > TPM_MAX_DIGEST_BUFFER)
+ {
+ fprintf (stderr, _("PCR concatenation buffer not enough.\n"));
+ return GRUB_ERR_OUT_OF_RANGE;
+ }
+
+ pcr_cursor = pcr_concat.buffer;
+ for (i = 0; i < args->tpm2_pcr_count; i++)
+ {
+ if (pcr_values.digests[i].size != pcr_digest_len)
+ {
+ fprintf (stderr,
+ _("Bad PCR value size: expected %" PRIuGRUB_SIZE " bytes but got %u bytes.\n"),
+ pcr_digest_len, pcr_values.digests[i].size);
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ grub_memcpy (pcr_cursor, pcr_values.digests[i].buffer, pcr_digest_len);
+ pcr_cursor += pcr_digest_len;
+ }
+ pcr_concat.size = pcr_concat_len;
+
+ rc = TPM2_Hash (NULL, &pcr_concat, args->tpm2_bank, TPM_RH_NULL, &pcr_digest,
+ NULL, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to generate PCR digest (TPM2_Hash: 0x%x)\n"), rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* Start Trial Session */
+ nonce.size = TPM_SHA256_DIGEST_SIZE;
+ symmetric.algorithm = TPM_ALG_NULL;
+
+ rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, 0, &nonce, &salt,
+ TPM_SE_TRIAL, &symmetric, TPM_ALG_SHA256,
+ &session, NULL, 0);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr,
+ _("Failed to start trial policy session (TPM2_StartAuthSession: 0x%x).\n"),
+ rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* PCR Policy */
+ rc = TPM2_PolicyPCR (session, NULL, &pcr_digest, &pcr_sel, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to submit PCR policy (TPM2_PolicyPCR: 0x%x).\n"),
+ rc);
+ err = GRUB_ERR_BAD_DEVICE;
+ goto error;
+ }
+
+ /* Retrieve Policy Digest */
+ rc = TPM2_PolicyGetDigest (session, NULL, &policy_digest, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to get policy digest (TPM2_PolicyGetDigest: 0x%x).\n"),
+ rc);
+ err = GRUB_ERR_BAD_DEVICE;
+ goto error;
+ }
+
+ /* Epilogue */
+ *digest = policy_digest;
+ err = GRUB_ERR_NONE;
+
+error:
+ TPM2_FlushContext (session);
+
+ return err;
+}
+
+static grub_err_t
+grub_protect_tpm2_get_srk (struct grub_protect_args *args, TPM_HANDLE *srk)
+{
+ TPM_RC rc;
+ TPM2B_PUBLIC public;
+ TPMS_AUTH_COMMAND authCommand = { 0 };
+ TPM2B_SENSITIVE_CREATE inSensitive = { 0 };
+ TPM2B_PUBLIC inPublic = { 0 };
+ TPM2B_DATA outsideInfo = { 0 };
+ TPML_PCR_SELECTION creationPcr = { 0 };
+ TPM2B_PUBLIC outPublic = { 0 };
+ TPM2B_CREATION_DATA creationData = { 0 };
+ TPM2B_DIGEST creationHash = { 0 };
+ TPMT_TK_CREATION creationTicket = { 0 };
+ TPM2B_NAME srkName = { 0 };
+ TPM_HANDLE srkHandle;
+
+ if (args->tpm2_srk != 0)
+ {
+ /* Find SRK */
+ rc = TPM2_ReadPublic (args->tpm2_srk, NULL, &public);
+ if (rc == TPM_RC_SUCCESS)
+ {
+ printf (_("Read SRK from 0x%x\n"), args->tpm2_srk);
+ *srk = args->tpm2_srk;
+ return GRUB_ERR_NONE;
+ }
+
+ /* The handle exists but its public area could not be read. */
+ if ((rc & ~TPM_RC_N_MASK) != TPM_RC_HANDLE)
+ {
+ fprintf (stderr,
+ _("Failed to retrieve SRK from 0x%x (TPM2_ReadPublic: 0x%x).\n"),
+ args->tpm2_srk, rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+ }
+
+ /* Create SRK */
+ authCommand.sessionHandle = TPM_RS_PW;
+ inPublic.publicArea.type = args->srk_type.type;
+ inPublic.publicArea.nameAlg = args->srk_type.nameAlg;
+ inPublic.publicArea.objectAttributes.restricted = 1;
+ inPublic.publicArea.objectAttributes.userWithAuth = 1;
+ inPublic.publicArea.objectAttributes.decrypt = 1;
+ inPublic.publicArea.objectAttributes.fixedTPM = 1;
+ inPublic.publicArea.objectAttributes.fixedParent = 1;
+ inPublic.publicArea.objectAttributes.sensitiveDataOrigin = 1;
+ inPublic.publicArea.objectAttributes.noDA = 1;
+
+ switch (args->srk_type.type)
+ {
+ case TPM_ALG_RSA:
+ inPublic.publicArea.parameters.rsaDetail.symmetric.algorithm = TPM_ALG_AES;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.keyBits.aes = args->srk_type.aes_bits;
+ inPublic.publicArea.parameters.rsaDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.rsaDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.rsaDetail.keyBits = args->srk_type.detail.rsa_bits;
+ inPublic.publicArea.parameters.rsaDetail.exponent = 0;
+ break;
+
+ case TPM_ALG_ECC:
+ inPublic.publicArea.parameters.eccDetail.symmetric.algorithm = TPM_ALG_AES;
+ inPublic.publicArea.parameters.eccDetail.symmetric.keyBits.aes = args->srk_type.aes_bits;
+ inPublic.publicArea.parameters.eccDetail.symmetric.mode.aes = TPM_ALG_CFB;
+ inPublic.publicArea.parameters.eccDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.parameters.eccDetail.curveID = args->srk_type.detail.ecc_curve;
+ inPublic.publicArea.parameters.eccDetail.kdf.scheme = TPM_ALG_NULL;
+ break;
+
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ rc = TPM2_CreatePrimary (TPM_RH_OWNER, &authCommand, &inSensitive, &inPublic,
+ &outsideInfo, &creationPcr, &srkHandle, &outPublic,
+ &creationData, &creationHash, &creationTicket,
+ &srkName, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to create SRK (TPM2_CreatePrimary: 0x%x).\n"), rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* Persist SRK */
+ if (args->tpm2_srk != 0)
+ {
+ rc = TPM2_EvictControl (TPM_RH_OWNER, srkHandle, &authCommand,
+ args->tpm2_srk, NULL);
+ if (rc == TPM_RC_SUCCESS)
+ {
+ TPM2_FlushContext (srkHandle);
+ srkHandle = args->tpm2_srk;
+ }
+ else
+ fprintf (stderr,
+ _("Warning: Failed to persist SRK (0x%x) (TPM2_EvictControl: 0x%x\n). "
+ "Continuing anyway...\n"), args->tpm2_srk, rc);
+ }
+
+ /* Epilogue */
+ *srk = srkHandle;
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_tpm2_seal (TPM2B_DIGEST *policyDigest, TPM_HANDLE srk,
+ grub_uint8_t *clearText, grub_size_t clearTextLength,
+ TPM2_SEALED_KEY *sealed_key)
+{
+ TPM_RC rc;
+ TPMS_AUTH_COMMAND authCommand = { 0 };
+ TPM2B_SENSITIVE_CREATE inSensitive = { 0 };
+ TPM2B_PUBLIC inPublic = { 0 };
+ TPM2B_DATA outsideInfo = { 0 };
+ TPML_PCR_SELECTION pcr_sel = { 0 };
+ TPM2B_PRIVATE outPrivate = { 0 };
+ TPM2B_PUBLIC outPublic = { 0 };
+
+ /* Seal Data */
+ authCommand.sessionHandle = TPM_RS_PW;
+
+ inSensitive.sensitive.data.size = clearTextLength;
+ memcpy(inSensitive.sensitive.data.buffer, clearText, clearTextLength);
+
+ inPublic.publicArea.type = TPM_ALG_KEYEDHASH;
+ inPublic.publicArea.nameAlg = TPM_ALG_SHA256;
+ inPublic.publicArea.parameters.keyedHashDetail.scheme.scheme = TPM_ALG_NULL;
+ inPublic.publicArea.authPolicy = *policyDigest;
+
+ rc = TPM2_Create (srk, &authCommand, &inSensitive, &inPublic, &outsideInfo,
+ &pcr_sel, &outPrivate, &outPublic, NULL, NULL, NULL, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("Failed to seal key (TPM2_Create: 0x%x).\n"), rc);
+ return GRUB_ERR_BAD_DEVICE;
+ }
+
+ /* Epilogue */
+ sealed_key->public = outPublic;
+ sealed_key->private = outPrivate;
+
+ return GRUB_ERR_NONE;
+}
+
+extern asn1_static_node tpm2key_asn1_tab[];
+
+static grub_err_t
+grub_protect_tpm2_export_tpm2key (const struct grub_protect_args *args,
+ TPM2_SEALED_KEY *sealed_key)
+{
+ const char *sealed_key_oid = "2.23.133.10.1.5";
+ asn1_node asn1_def = NULL;
+ asn1_node tpm2key = NULL;
+ grub_uint32_t parent;
+ grub_uint32_t cmd_code;
+ struct grub_tpm2_buffer pol_buf;
+ TPML_PCR_SELECTION pcr_sel = {
+ .count = 1,
+ .pcrSelections = {
+ {
+ .hash = args->tpm2_bank,
+ .sizeOfSelect = 3,
+ .pcrSelect = { 0 }
+ },
+ }
+ };
+ struct grub_tpm2_buffer pub_buf;
+ struct grub_tpm2_buffer priv_buf;
+ void *der_buf = NULL;
+ int der_buf_size = 0;
+ int i;
+ int ret;
+ grub_err_t err;
+
+ for (i = 0; i < args->tpm2_pcr_count; i++)
+ TPMS_PCR_SELECTION_SelectPCR (&pcr_sel.pcrSelections[0], args->tpm2_pcrs[i]);
+
+ /*
+ * Prepare the parameters for TPM_CC_PolicyPCR:
+ * empty pcrDigest and the user selected PCRs
+ */
+ grub_tpm2_buffer_init (&pol_buf);
+ grub_tpm2_buffer_pack_u16 (&pol_buf, 0);
+ grub_tpm2_mu_TPML_PCR_SELECTION_Marshal (&pol_buf, &pcr_sel);
+
+ grub_tpm2_buffer_init (&pub_buf);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&pub_buf, &sealed_key->public);
+ grub_tpm2_buffer_init (&priv_buf);
+ grub_tpm2_mu_TPM2B_Marshal (&priv_buf, sealed_key->private.size,
+ sealed_key->private.buffer);
+ if (pub_buf.error != 0 || priv_buf.error != 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ ret = asn1_array2tree (tpm2key_asn1_tab, &asn1_def, NULL);
+ if (ret != ASN1_SUCCESS)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ ret = asn1_create_element (asn1_def, "TPM2KEY.TPMKey" , &tpm2key);
+ if (ret != ASN1_SUCCESS)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ /* Set 'type' to "sealed key" */
+ ret = asn1_write_value (tpm2key, "type", sealed_key_oid, 1);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Set 'emptyAuth' to TRUE */
+ ret = asn1_write_value (tpm2key, "emptyAuth", "TRUE", 1);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Set 'policy' */
+ ret = asn1_write_value (tpm2key, "policy", "NEW", 1);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+ cmd_code = grub_cpu_to_be32 (TPM_CC_PolicyPCR);
+ ret = asn1_write_value (tpm2key, "policy.?LAST.CommandCode", &cmd_code,
+ sizeof (cmd_code));
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+ ret = asn1_write_value (tpm2key, "policy.?LAST.CommandPolicy", &pol_buf.data,
+ pol_buf.size);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Remove 'secret' */
+ ret = asn1_write_value (tpm2key, "secret", NULL, 0);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Remove 'authPolicy' */
+ ret = asn1_write_value (tpm2key, "authPolicy", NULL, 0);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Use the SRK handle as the parent handle if specified
+ Otherwise, Use TPM_RH_OWNER as the default parent handle */
+ if (args->tpm2_srk != 0)
+ parent = grub_cpu_to_be32 (args->tpm2_srk);
+ else
+ parent = grub_cpu_to_be32 (TPM_RH_OWNER);
+ ret = asn1_write_value (tpm2key, "parent", &parent, sizeof (parent));
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Set the pubkey */
+ ret = asn1_write_value (tpm2key, "pubkey", pub_buf.data, pub_buf.size);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Set the privkey */
+ ret = asn1_write_value (tpm2key, "privkey", priv_buf.data, priv_buf.size);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ /* Create the DER binary */
+ der_buf_size = 0;
+ ret = asn1_der_coding (tpm2key, "", NULL, &der_buf_size, NULL);
+
+ der_buf = grub_malloc (der_buf_size);
+ if (der_buf == NULL)
+ {
+ err = GRUB_ERR_OUT_OF_MEMORY;
+ goto error;
+ }
+
+ ret = asn1_der_coding (tpm2key, "", der_buf, &der_buf_size, NULL);
+ if (ret != ASN1_SUCCESS)
+ {
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto error;
+ }
+
+ err = grub_protect_write_file (args->tpm2_outfile, der_buf, der_buf_size);
+ if (err != GRUB_ERR_NONE)
+ fprintf (stderr, _("Could not write tpm2key file (Error: %u).\n"),
+ errno);
+
+error:
+ grub_free (der_buf);
+
+ if (tpm2key)
+ asn1_delete_structure (&tpm2key);
+
+ return err;
+}
+
+static grub_err_t
+grub_protect_tpm2_export_sealed_key (const char *filepath,
+ TPM2_SEALED_KEY *sealed_key)
+{
+ grub_err_t err;
+ struct grub_tpm2_buffer buf;
+
+ grub_tpm2_buffer_init (&buf);
+ grub_tpm2_mu_TPM2B_PUBLIC_Marshal (&buf, &sealed_key->public);
+ grub_tpm2_mu_TPM2B_Marshal (&buf, sealed_key->private.size,
+ sealed_key->private.buffer);
+ if (buf.error != 0)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ err = grub_protect_write_file (filepath, buf.data, buf.size);
+ if (err != GRUB_ERR_NONE)
+ fprintf (stderr, _("Could not write sealed key file (Error: %u).\n"),
+ errno);
+
+ return err;
+}
+
+static grub_err_t
+grub_protect_tpm2_add (struct grub_protect_args *args)
+{
+ grub_err_t err;
+ grub_uint8_t *key = NULL;
+ grub_size_t key_size;
+ TPM_HANDLE srk;
+ TPM2B_DIGEST policy_digest;
+ TPM2_SEALED_KEY sealed_key;
+
+ err = grub_protect_tpm2_open_device (args->tpm2_device);
+ if (err != GRUB_ERR_NONE)
+ return err;
+
+ err = grub_protect_read_file (args->tpm2_keyfile, (void **)&key, &key_size);
+ if (err != GRUB_ERR_NONE)
+ goto exit1;
+
+ if (key_size > TPM_MAX_SYM_DATA)
+ {
+ fprintf (stderr,
+ _("Input key is too long, maximum allowed size is %u bytes.\n"),
+ TPM_MAX_SYM_DATA);
+ err = GRUB_ERR_OUT_OF_RANGE;
+ goto exit2;
+ }
+
+ err = grub_protect_tpm2_get_srk (args, &srk);
+ if (err != GRUB_ERR_NONE)
+ goto exit2;
+
+ err = grub_protect_tpm2_get_policy_digest (args, &policy_digest);
+ if (err != GRUB_ERR_NONE)
+ goto exit3;
+
+ err = grub_protect_tpm2_seal (&policy_digest, srk, key, key_size,
+ &sealed_key);
+ if (err != GRUB_ERR_NONE)
+ goto exit3;
+
+ if (args->tpm2_tpm2key)
+ err = grub_protect_tpm2_export_tpm2key (args, &sealed_key);
+ else
+ err = grub_protect_tpm2_export_sealed_key (args->tpm2_outfile, &sealed_key);
+ if (err != GRUB_ERR_NONE)
+ goto exit3;
+
+exit3:
+ TPM2_FlushContext (srk);
+
+exit2:
+ grub_free (key);
+
+exit1:
+ grub_protect_tpm2_close_device ();
+
+ return err;
+}
+
+static grub_err_t
+grub_protect_tpm2_remove (struct grub_protect_args *args)
+{
+ TPM_RC rc;
+ TPM2B_PUBLIC public;
+ TPMS_AUTH_COMMAND authCommand = { 0 };
+ grub_err_t err;
+
+ if (args->tpm2_evict == 0)
+ {
+ printf (_("--tpm2-evict not specified, nothing to do.\n"));
+ return GRUB_ERR_NONE;
+ }
+
+ err = grub_protect_tpm2_open_device (args->tpm2_device);
+ if (err != GRUB_ERR_NONE)
+ return err;
+
+ /* Find SRK */
+ rc = TPM2_ReadPublic (args->tpm2_srk, NULL, &public);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr, _("SRK with handle 0x%x not found.\n"), args->tpm2_srk);
+ err = GRUB_ERR_BAD_ARGUMENT;
+ goto exit1;
+ }
+
+ /* Evict SRK */
+ authCommand.sessionHandle = TPM_RS_PW;
+
+ rc = TPM2_EvictControl (TPM_RH_OWNER, args->tpm2_srk, &authCommand,
+ args->tpm2_srk, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ fprintf (stderr,
+ _("Failed to evict SRK with handle 0x%x (TPM2_EvictControl: 0x%x).\n"),
+ args->tpm2_srk, rc);
+ err = GRUB_ERR_BAD_DEVICE;
+ goto exit2;
+ }
+
+ err = GRUB_ERR_NONE;
+
+exit2:
+ TPM2_FlushContext (args->tpm2_srk);
+
+exit1:
+ grub_protect_tpm2_close_device ();
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_tpm2_run (struct grub_protect_args *args)
+{
+ switch (args->action)
+ {
+ case GRUB_PROTECT_ACTION_ADD:
+ return grub_protect_tpm2_add (args);
+
+ case GRUB_PROTECT_ACTION_REMOVE:
+ return grub_protect_tpm2_remove (args);
+
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+}
+
+static grub_err_t
+grub_protect_tpm2_args_verify (struct grub_protect_args *args)
+{
+ switch (args->action)
+ {
+ case GRUB_PROTECT_ACTION_ADD:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_EVICT)
+ {
+ fprintf (stderr,
+ _("--tpm2-evict is invalid when --action is 'add'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->tpm2_keyfile == NULL)
+ {
+ fprintf (stderr, _("--tpm2-keyfile must be specified.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->tpm2_outfile == NULL)
+ {
+ fprintf (stderr, _("--tpm2-outfile must be specified.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->tpm2_device == NULL)
+ args->tpm2_device = "/dev/tpm0";
+
+ if (args->tpm2_pcr_count == 0)
+ {
+ args->tpm2_pcrs[0] = 7;
+ args->tpm2_pcr_count = 1;
+ }
+
+ if (args->srk_type.type == TPM_ALG_ERROR)
+ {
+ args->srk_type.type = TPM_ALG_ECC;
+ args->srk_type.nameAlg = TPM_ALG_SHA256;
+ args->srk_type.aes_bits = 128;
+ args->srk_type.detail.ecc_curve = TPM_ECC_NIST_P256;
+ }
+
+ if (args->tpm2_bank == TPM_ALG_ERROR)
+ args->tpm2_bank = TPM_ALG_SHA256;
+
+ break;
+
+ case GRUB_PROTECT_ACTION_REMOVE:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_ASYMMETRIC)
+ {
+ fprintf (stderr,
+ _("--tpm2-asymmetric is invalid when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->args & GRUB_PROTECT_ARG_TPM2_BANK)
+ {
+ fprintf (stderr,
+ _("--tpm2-bank is invalid when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->args & GRUB_PROTECT_ARG_TPM2_KEYFILE)
+ {
+ fprintf (stderr,
+ _("--tpm2-keyfile is invalid when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->args & GRUB_PROTECT_ARG_TPM2_OUTFILE)
+ {
+ fprintf (stderr,
+ _("--tpm2-outfile is invalid when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->args & GRUB_PROTECT_ARG_TPM2_PCRS)
+ {
+ fprintf (stderr,
+ _("--tpm2-pcrs is invalid when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->tpm2_srk == 0)
+ {
+ fprintf (stderr,
+ _("--tpm2-srk is not specified when --action is 'remove'.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ if (args->tpm2_device == NULL)
+ args->tpm2_device = "/dev/tpm0";
+
+ break;
+
+ default:
+ fprintf (stderr,
+ _("The TPM2 key protector only supports the following actions: "
+ "add, remove.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static error_t
+grub_protect_argp_parser (int key, char *arg, struct argp_state *state)
+{
+ grub_err_t err;
+ struct grub_protect_args *args = state->input;
+
+ switch (key)
+ {
+ case GRUB_PROTECT_OPT_ACTION:
+ if (args->args & GRUB_PROTECT_ARG_ACTION)
+ {
+ fprintf (stderr, _("--action|-a can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ if (grub_strcmp (arg, "add") == 0)
+ args->action = GRUB_PROTECT_ACTION_ADD;
+ else if (grub_strcmp (arg, "remove") == 0)
+ args->action = GRUB_PROTECT_ACTION_REMOVE;
+ else
+ {
+ fprintf (stderr, _("'%s' is not a valid action.\n"), arg);
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_ACTION;
+ break;
+
+ case GRUB_PROTECT_OPT_PROTECTOR:
+ if (args->args & GRUB_PROTECT_ARG_PROTECTOR)
+ {
+ fprintf (stderr, _("--protector|-p can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ if (grub_strcmp (arg, "tpm2") == 0)
+ args->protector = GRUB_PROTECT_TYPE_TPM2;
+ else
+ {
+ fprintf (stderr, _("'%s' is not a valid protector.\n"), arg);
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_PROTECTOR;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_DEVICE:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_DEVICE)
+ {
+ fprintf (stderr, _("--tpm2-device can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ args->tpm2_device = xstrdup(arg);
+ args->args |= GRUB_PROTECT_ARG_TPM2_DEVICE;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_PCRS:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_PCRS)
+ {
+ fprintf (stderr, _("--tpm2-pcrs can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ err = grub_tpm2_protector_parse_pcrs (arg, args->tpm2_pcrs,
+ &args->tpm2_pcr_count);
+ if (err != GRUB_ERR_NONE)
+ {
+ if (grub_errno != GRUB_ERR_NONE)
+ grub_print_error ();
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_TPM2_PCRS;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_SRK:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_SRK)
+ {
+ fprintf (stderr, _("--tpm2-srk can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ err = grub_tpm2_protector_parse_tpm_handle (arg, &args->tpm2_srk);
+ if (err != GRUB_ERR_NONE)
+ {
+ if (grub_errno != GRUB_ERR_NONE)
+ grub_print_error ();
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_TPM2_SRK;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_ASYMMETRIC:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_ASYMMETRIC)
+ {
+ fprintf (stderr, _("--tpm2-asymmetric can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ err = grub_tpm2_protector_parse_asymmetric (arg, &args->srk_type);
+ if (err != GRUB_ERR_NONE)
+ {
+ if (grub_errno != GRUB_ERR_NONE)
+ grub_print_error ();
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_TPM2_ASYMMETRIC;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_BANK:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_BANK)
+ {
+ fprintf (stderr, _("--tpm2-bank can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ err = grub_tpm2_protector_parse_bank (arg, &args->tpm2_bank);
+ if (err != GRUB_ERR_NONE)
+ {
+ if (grub_errno != GRUB_ERR_NONE)
+ grub_print_error ();
+ return EINVAL;
+ }
+
+ args->args |= GRUB_PROTECT_ARG_TPM2_BANK;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_KEYFILE:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_KEYFILE)
+ {
+ fprintf (stderr, _("--tpm2-keyfile can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ args->tpm2_keyfile = xstrdup(arg);
+ args->args |= GRUB_PROTECT_ARG_TPM2_KEYFILE;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_OUTFILE:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_OUTFILE)
+ {
+ fprintf (stderr, _("--tpm2-outfile can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ args->tpm2_outfile = xstrdup(arg);
+ args->args |= GRUB_PROTECT_ARG_TPM2_OUTFILE;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_EVICT:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_EVICT)
+ {
+ fprintf (stderr, _("--tpm2-evict can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ args->tpm2_evict = 1;
+ args->args |= GRUB_PROTECT_ARG_TPM2_EVICT;
+ break;
+
+ case GRUB_PROTECT_OPT_TPM2_TPM2KEY:
+ if (args->args & GRUB_PROTECT_ARG_TPM2_TPM2KEY)
+ {
+ fprintf (stderr, _("--tpm2-tpm2key can only be specified once.\n"));
+ return EINVAL;
+ }
+
+ args->tpm2_tpm2key = 1;
+ args->args |= GRUB_PROTECT_ARG_TPM2_TPM2KEY;
+ break;
+
+ default:
+ return ARGP_ERR_UNKNOWN;
+ }
+
+ return 0;
+}
+
+static grub_err_t
+grub_protect_args_verify (struct grub_protect_args *args)
+{
+ if (args->action == GRUB_PROTECT_ACTION_ERROR)
+ {
+ fprintf (stderr, "--action is mandatory.\n");
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ /* At the moment, the only configurable key protector is the TPM2 one, so it
+ * is the only key protector supported by this tool. */
+ if (args->protector != GRUB_PROTECT_TYPE_TPM2)
+ {
+ fprintf (stderr,
+ _("--protector is mandatory and only 'tpm2' is currently "
+ "supported.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ switch (args->protector)
+ {
+ case GRUB_PROTECT_TYPE_TPM2:
+ return grub_protect_tpm2_args_verify (args);
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_protect_dispatch (struct grub_protect_args *args)
+{
+ switch (args->protector)
+ {
+ case GRUB_PROTECT_TYPE_TPM2:
+ return grub_protect_tpm2_run (args);
+ default:
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+}
+
+static void
+grub_protect_init (int *argc, char **argv[])
+{
+ grub_util_host_init (argc, argv);
+
+ grub_util_biosdisk_init (NULL);
+
+ grub_init_all ();
+
+ grub_lvm_fini ();
+ grub_mdraid09_fini ();
+ grub_mdraid1x_fini ();
+ grub_diskfilter_fini ();
+ grub_diskfilter_init ();
+ grub_mdraid09_init ();
+ grub_mdraid1x_init ();
+ grub_lvm_init ();
+}
+
+static void
+grub_protect_fini (void)
+{
+ grub_fini_all ();
+ grub_util_biosdisk_fini ();
+}
+
+static struct argp grub_protect_argp =
+{
+ .options = grub_protect_options,
+ .parser = grub_protect_argp_parser,
+ .args_doc = NULL,
+ .doc =
+ N_("Protect a cleartext key using a GRUB key protector that can retrieve "
+ "the key during boot to unlock fully-encrypted disks automatically."),
+ .children = NULL,
+ .help_filter = NULL,
+ .argp_domain = NULL
+};
+
+int
+main (int argc, char *argv[])
+{
+ grub_err_t err;
+ struct grub_protect_args args = { 0 };
+
+ if (argp_parse (&grub_protect_argp, argc, argv, 0, 0, &args) != 0)
+ {
+ fprintf (stderr, _("Could not parse arguments.\n"));
+ return GRUB_ERR_BAD_ARGUMENT;
+ }
+
+ grub_protect_init (&argc, &argv);
+
+ err = grub_protect_args_verify (&args);
+ if (err != GRUB_ERR_NONE)
+ goto exit;
+
+ err = grub_protect_dispatch (&args);
+ if (err != GRUB_ERR_NONE)
+ goto exit;
+
+exit:
+ grub_protect_fini ();
+
+ return err;
+}
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 14/20] tpm2: Support authorized policy
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (12 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 13/20] util/grub-protect: Add new tool Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 15/20] tpm2: Implement NV index Gary Lin via Grub-devel
` (5 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
This commit handles the TPM2_PolicyAuthorize command from the key file
in TPM 2.0 Key File format.
TPM2_PolicyAuthorize is the essential command to support authorized
policy which allows the users to sign TPM policies with their own keys.
Per TPM 2.0 Key File(*1), CommandPolicy for TPM2_PolicyAuthorize
comprises 'TPM2B_PUBLIC pubkey', 'TPM2B_DIGEST policy_ref', and
'TPMT_SIGNATURE signature'. To verify the signature, the current policy
digest is hashed with the hash algorithm written in 'signature', and then
'signature' is verified with the hashed policy digest and 'pubkey'. Once
TPM accepts 'signature', TPM2_PolicyAuthorize is invoked to authorize the
signed policy.
To create the key file with authorized policy, here are the pcr-oracle(*2)
commands:
# Generate the RSA key and create the authorized policy file
$ pcr-oracle \
--rsa-generate-key \
--private-key policy-key.pem \
--auth authorized.policy \
create-authorized-policy 0,2,4,7,9
# Seal the secret with the authorized policy
$ pcr-oracle \
--key-format tpm2.0 \
--auth authorized.policy \
--input disk-secret.txt \
--output sealed.key \
seal-secret
# Sign the predicted PCR policy
$ pcr-oracle \
--key-format tpm2.0 \
--private-key policy-key.pem \
--from eventlog \
--stop-event "grub-file=grub.cfg" \
--after \
--input sealed.key \
--output sealed.tpm \
sign 0,2,4,7,9
Then specify the key file and the key protector to grub.cfg in the EFI
system partition:
tpm2_key_protector_init -a RSA --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
cryptomount -u <PART_UUID> -P tpm2
For any change in the boot components, just run the 'sign' command again
to update the signature in sealed.tpm, and TPM can unseal the key file
with the updated PCR policy.
(*1) https://www.hansenpartnership.com/draft-bottomley-tpm2-keys.html
(*2) https://github.com/okirch/pcr-oracle
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
grub-core/tpm2/module.c | 84 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
diff --git a/grub-core/tpm2/module.c b/grub-core/tpm2/module.c
index 485845f36..4fc2b5356 100644
--- a/grub-core/tpm2/module.c
+++ b/grub-core/tpm2/module.c
@@ -652,6 +652,87 @@ grub_tpm2_protector_policypcr (TPMI_SH_AUTH_SESSION session,
return GRUB_ERR_NONE;
}
+static grub_err_t
+grub_tpm2_protector_policyauthorize (TPMI_SH_AUTH_SESSION session,
+ struct grub_tpm2_buffer *cmd_buf)
+{
+ TPM2B_PUBLIC pubkey;
+ TPM2B_DIGEST policy_ref;
+ TPMT_SIGNATURE signature;
+ TPM2B_DIGEST pcr_policy;
+ TPM2B_DIGEST pcr_policy_hash;
+ TPMI_ALG_HASH sig_hash;
+ TPMT_TK_VERIFIED verification_ticket;
+ TPM_HANDLE pubkey_handle = 0;
+ TPM2B_NAME pubname;
+ TPM_RC rc;
+ grub_err_t err;
+
+ grub_tpm2_mu_TPM2B_PUBLIC_Unmarshal (cmd_buf, &pubkey);
+ grub_tpm2_mu_TPM2B_DIGEST_Unmarshal (cmd_buf, &policy_ref);
+ grub_tpm2_mu_TPMT_SIGNATURE_Unmarshal (cmd_buf, &signature);
+ if (cmd_buf->error != 0)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to unmarshal the buffer for TPM2_PolicyAuthorize"));
+
+ /* Retrieve Policy Digest */
+ rc = TPM2_PolicyGetDigest (session, NULL, &pcr_policy, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to get policy digest (TPM2_PolicyGetDigest: 0x%x)."),
+ rc);
+
+ /* Calculate the digest of the polcy for VerifySignature */
+ sig_hash = TPMT_SIGNATURE_get_hash_alg (&signature);
+ if (sig_hash == TPM_ALG_NULL)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("Failed to get the hash algorithm of the signature"));
+
+ rc = TPM2_Hash (NULL, (TPM2B_MAX_BUFFER *)&pcr_policy, sig_hash,
+ TPM_RH_NULL, &pcr_policy_hash, NULL, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to create PCR policy hash (TPM2_Hash: 0x%x)"),
+ rc);
+
+ /* Load the public key */
+ rc = TPM2_LoadExternal (NULL, NULL, &pubkey, TPM_RH_OWNER,
+ &pubkey_handle, &pubname, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ return grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to load public key (TPM2_LoadExternal: 0x%x)"),
+ rc);
+
+ /* Verify the signature against the public key and the policy digest */
+ rc = TPM2_VerifySignature (pubkey_handle, NULL, &pcr_policy_hash, &signature,
+ &verification_ticket, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ err = grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to verify signature (TPM2_VerifySignature: 0x%x)"),
+ rc);
+ goto error;
+ }
+
+ /* Authorize the signed policy with the public key and the verification ticket */
+ rc = TPM2_PolicyAuthorize (session, NULL, &pcr_policy, &policy_ref, &pubname,
+ &verification_ticket, NULL);
+ if (rc != TPM_RC_SUCCESS)
+ {
+ err = grub_error (GRUB_ERR_BAD_DEVICE,
+ N_("Failed to authorize PCR policy (TPM2_PolicyAuthorize: 0x%x)"),
+ rc);
+ goto error;
+ }
+
+ err = GRUB_ERR_NONE;
+
+error:
+ TPM2_FlushContext (pubkey_handle);
+
+ return err;
+}
+
static grub_err_t
grub_tpm2_protector_enforce_policy (tpm2key_policy_t policy, TPMI_SH_AUTH_SESSION session)
{
@@ -671,6 +752,9 @@ grub_tpm2_protector_enforce_policy (tpm2key_policy_t policy, TPMI_SH_AUTH_SESSIO
case TPM_CC_PolicyPCR:
err = grub_tpm2_protector_policypcr (session, &buf);
break;
+ case TPM_CC_PolicyAuthorize:
+ err = grub_tpm2_protector_policyauthorize (session, &buf);
+ break;
default:
return grub_error (GRUB_ERR_BAD_ARGUMENT,
N_("Unknown TPM Command: 0x%x"), policy->cmd_code);
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 15/20] tpm2: Implement NV index
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (13 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 14/20] tpm2: Support authorized policy Gary Lin via Grub-devel
@ 2024-04-19 8:30 ` Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 16/20] cryptodisk: Fallback to passphrase Gary Lin via Grub-devel
` (4 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:30 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Patrick Colp <patrick.colp@oracle.com>
Currently with the TPM2 protector, only SRK mode is supported and
NV index support is just a stub. Implement the NV index option.
Note: This only extends support on the unseal path. grub2_protect
has not been updated. tpm2-tools can be used to insert a key into
the NV index.
An example of inserting a key using tpm2-tools:
# Get random key.
tpm2_getrandom 32 > key.dat
# Create primary object.
tpm2_createprimary -C o -g sha256 -G ecc -c primary.ctx
# Create policy object. `pcrs.dat` contains the PCR values to seal against.
tpm2_startauthsession -S session.dat
tpm2_policypcr -S session.dat -l sha256:7,11 -f pcrs.dat -L policy.dat
tpm2_flushcontext session.dat
# Seal key into TPM.
cat key.dat | tpm2_create -C primary.ctx -u key.pub -r key.priv -L policy.dat -i-
tpm2_load -C primary.ctx -u key.pub -r key.priv -n sealing.name -c sealing.ctx
tpm2_evictcontrol -C o -c sealing.ctx 0x81000000
Then to unseal the key in grub, add this to grub.cfg:
tpm2_key_protector_init --mode=nv --nvindex=0x81000000 --pcrs=7,11
cryptomount -u <UUID> --protector tpm2
Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
grub-core/tpm2/module.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/grub-core/tpm2/module.c b/grub-core/tpm2/module.c
index 4fc2b5356..342822fbf 100644
--- a/grub-core/tpm2/module.c
+++ b/grub-core/tpm2/module.c
@@ -1025,12 +1025,27 @@ static grub_err_t
grub_tpm2_protector_nv_recover (const struct grub_tpm2_protector_context *ctx,
grub_uint8_t **key, grub_size_t *key_size)
{
- (void)ctx;
- (void)key;
- (void)key_size;
+ TPM_HANDLE sealed_handle = ctx->nv;
+ tpm2key_policy_t policy_seq = NULL;
+ grub_err_t err;
+
+ /* Create a basic policy sequence based on the given PCR selection */
+ err = grub_tpm2_protector_simple_policy_seq (ctx, &policy_seq);
+ if (err != GRUB_ERR_NONE)
+ goto exit;
+
+ err = grub_tpm2_protector_unseal (policy_seq, sealed_handle, key, key_size);
+
+ /* Pop error messages on success */
+ if (err == GRUB_ERR_NONE)
+ while (grub_error_pop ());
+
+exit:
+ TPM2_FlushContext (sealed_handle);
- return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
- N_("NV Index mode is not implemented yet"));
+ grub_tpm2key_free_policy_seq (policy_seq);
+
+ return err;
}
static grub_err_t
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 16/20] cryptodisk: Fallback to passphrase
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (14 preceding siblings ...)
2024-04-19 8:30 ` [PATCH v12 15/20] tpm2: Implement NV index Gary Lin via Grub-devel
@ 2024-04-19 8:31 ` Gary Lin via Grub-devel
2024-04-19 12:03 ` Stefan Berger
2024-04-19 8:31 ` [PATCH v12 17/20] cryptodisk: wipe out the cached keys from protectors Gary Lin via Grub-devel
` (3 subsequent siblings)
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:31 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
From: Patrick Colp <patrick.colp@oracle.com>
If a protector is specified, but it fails to unlock the disk, fall back
to asking for the passphrase. However, an error was set indicating that
the protector(s) failed. Later code (e.g., LUKS code) fails as
`grub_errno` is now set. Print the existing errors out first, before
proceeding with the passphrase.
Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
Signed-off-by: Gary Lin <glin@suse.com>
---
grub-core/disk/cryptodisk.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/grub-core/disk/cryptodisk.c b/grub-core/disk/cryptodisk.c
index b7648ffb7..8f00f22a8 100644
--- a/grub-core/disk/cryptodisk.c
+++ b/grub-core/disk/cryptodisk.c
@@ -1191,11 +1191,16 @@ grub_cryptodisk_scan_device_real (const char *name,
source->name, source->partition != NULL ? "," : "",
part != NULL ? part : N_("UNKNOWN"), dev->uuid);
grub_free (part);
- goto error;
}
if (!cargs->key_len)
{
+ if (grub_errno)
+ {
+ grub_print_error ();
+ grub_errno = GRUB_ERR_NONE;
+ }
+
/* Get the passphrase from the user, if no key data. */
askpass = 1;
part = grub_partition_get_name (source->partition);
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 17/20] cryptodisk: wipe out the cached keys from protectors
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (15 preceding siblings ...)
2024-04-19 8:31 ` [PATCH v12 16/20] cryptodisk: Fallback to passphrase Gary Lin via Grub-devel
@ 2024-04-19 8:31 ` Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 18/20] diskfilter: look up cryptodisk devices first Gary Lin via Grub-devel
` (2 subsequent siblings)
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:31 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Fabian Vogt
An attacker may insert a malicious disk with the same crypto UUID and
trick grub2 to mount the fake root. Even though the key from the key
protector fails to unlock the fake root, it's not wiped out cleanly so
the attacker could dump the memory to retrieve the secret key. To defend
such attack, wipe out the cached key when we don't need it.
Cc: Fabian Vogt <fvogt@suse.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
grub-core/disk/cryptodisk.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/grub-core/disk/cryptodisk.c b/grub-core/disk/cryptodisk.c
index 8f00f22a8..3b19f2d2d 100644
--- a/grub-core/disk/cryptodisk.c
+++ b/grub-core/disk/cryptodisk.c
@@ -1349,7 +1349,11 @@ grub_cryptodisk_clear_key_cache (struct grub_cryptomount_args *cargs)
return;
for (i = 0; cargs->protectors[i]; i++)
- grub_free (cargs->key_cache[i].key);
+ {
+ if (cargs->key_cache[i].key)
+ grub_memset (cargs->key_cache[i].key, 0, cargs->key_cache[i].key_len);
+ grub_free (cargs->key_cache[i].key);
+ }
grub_free (cargs->key_cache);
}
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 18/20] diskfilter: look up cryptodisk devices first
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (16 preceding siblings ...)
2024-04-19 8:31 ` [PATCH v12 17/20] cryptodisk: wipe out the cached keys from protectors Gary Lin via Grub-devel
@ 2024-04-19 8:31 ` Gary Lin via Grub-devel
2024-04-19 13:20 ` Stefan Berger
2024-04-19 8:31 ` [PATCH v12 19/20] tpm2: Enable tpm2 module for grub-emu Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 20/20] tests: Add tpm2_test Gary Lin via Grub-devel
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:31 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger,
Fabian Vogt
When using disk auto-unlocking with TPM 2.0, the typical grub.cfg may
look like this:
tpm2_key_protector_init --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
cryptomount -u <PART-UUID> -P tpm2
search --fs-uuid --set=root <FS-UUID>
Since the disk search order is based on the order of module loading, the
attacker could insert a malicious disk with the same FS-UUID root to
trick grub2 to boot into th malicious root and further dump memory to
steal the unsealed key.
To defend such attack, we can specify the hint provided by 'grub-probe'
to search the encrypted partition first:
search --fs-uuid --set=root --hint='cryptouuid/<PART-UUID>' <FS-UUID>
However, for LVM on a encrypted partition, the search hint provided by
'grub-probe' is:
--hint='lvmid/<VG-UUID>/<LV-UUID>'
It doesn't guarantee to look up the logical volume from the encrypted
partition, so the attacker may have the chance to fool grub2 to boot
into the malicious disk.
To mininize the attack surface, this commit tweaks the disk device search
in diskfilter to look up cryptodisk devices first and then others, so
that the auto-unlocked disk will be found first, not the attacker's disk.
Signed-off-by: Gary Lin <glin@suse.com>
Cc: Fabian Vogt <fvogt@suse.com>
---
grub-core/disk/diskfilter.c | 35 ++++++++++++++++++++++++++---------
1 file changed, 26 insertions(+), 9 deletions(-)
diff --git a/grub-core/disk/diskfilter.c b/grub-core/disk/diskfilter.c
index 21e239511..df1992305 100644
--- a/grub-core/disk/diskfilter.c
+++ b/grub-core/disk/diskfilter.c
@@ -226,15 +226,32 @@ scan_devices (const char *arname)
int need_rescan;
for (pull = 0; pull < GRUB_DISK_PULL_MAX; pull++)
- for (p = grub_disk_dev_list; p; p = p->next)
- if (p->id != GRUB_DISK_DEVICE_DISKFILTER_ID
- && p->disk_iterate)
- {
- if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
- return;
- if (arname && is_lv_readable (find_lv (arname), 1))
- return;
- }
+ {
+ /* look up the crytodisk devices first */
+ for (p = grub_disk_dev_list; p; p = p->next)
+ if (p->id == GRUB_DISK_DEVICE_CRYPTODISK_ID
+ && p->disk_iterate)
+ {
+ if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
+ return;
+ if (arname && is_lv_readable (find_lv (arname), 1))
+ return;
+ break;
+ }
+
+ /* check the devices other than crytodisk */
+ for (p = grub_disk_dev_list; p; p = p->next)
+ if (p->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
+ continue;
+ else if (p->id != GRUB_DISK_DEVICE_DISKFILTER_ID
+ && p->disk_iterate)
+ {
+ if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
+ return;
+ if (arname && is_lv_readable (find_lv (arname), 1))
+ return;
+ }
+ }
scan_depth = 0;
need_rescan = 1;
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 19/20] tpm2: Enable tpm2 module for grub-emu
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (17 preceding siblings ...)
2024-04-19 8:31 ` [PATCH v12 18/20] diskfilter: look up cryptodisk devices first Gary Lin via Grub-devel
@ 2024-04-19 8:31 ` Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 20/20] tests: Add tpm2_test Gary Lin via Grub-devel
19 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:31 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
As a preparation to test TPM 2.0 TSS stack with grub-emu, the new
option, --tpm-device, is introduced to specify the TPM device for
grub-emu so that grub-emu can share the emulated TPM device with
the host.
Since grub-emu can directly access the device node on host, it's easy to
implement the essential TCG2 command submission function with the
read/write functions and enable tpm2 module for grub-emu, so that we can
further test TPM key unsealing with grub-emu.
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
grub-core/Makefile.core.def | 2 ++
grub-core/kern/emu/main.c | 11 +++++++-
grub-core/kern/emu/misc.c | 51 ++++++++++++++++++++++++++++++++++++
grub-core/tpm2/tcg2-emu.c | 52 +++++++++++++++++++++++++++++++++++++
include/grub/emu/misc.h | 5 ++++
5 files changed, 120 insertions(+), 1 deletion(-)
create mode 100644 grub-core/tpm2/tcg2-emu.c
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 85aaadf68..b2456a07e 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -2571,7 +2571,9 @@ module = {
common = tpm2/tpm2key.c;
common = tpm2/tpm2key_asn1_tab.c;
efi = tpm2/tcg2.c;
+ emu = tpm2/tcg2-emu.c;
enable = efi;
+ enable = emu;
};
module = {
diff --git a/grub-core/kern/emu/main.c b/grub-core/kern/emu/main.c
index 855b11c3d..c10838613 100644
--- a/grub-core/kern/emu/main.c
+++ b/grub-core/kern/emu/main.c
@@ -55,7 +55,7 @@
static jmp_buf main_env;
/* Store the prefix specified by an argument. */
-static char *root_dev = NULL, *dir = NULL;
+static char *root_dev = NULL, *dir = NULL, *tpm_dev = NULL;
grub_addr_t grub_modbase = 0;
@@ -108,6 +108,7 @@ static struct argp_option options[] = {
{"verbose", 'v', 0, 0, N_("print verbose messages."), 0},
{"hold", 'H', N_("SECS"), OPTION_ARG_OPTIONAL, N_("wait until a debugger will attach"), 0},
{"kexec", 'X', 0, 0, N_("use kexec to boot Linux kernels via systemctl (pass twice to enable dangerous fallback to non-systemctl)."), 0},
+ {"tpm-device", 't', N_("DEV"), 0, N_("Set TPM device."), 0},
{ 0, 0, 0, 0, 0, 0 }
};
@@ -168,6 +169,10 @@ argp_parser (int key, char *arg, struct argp_state *state)
case 'X':
grub_util_set_kexecute ();
break;
+ case 't':
+ free (tpm_dev);
+ tpm_dev = xstrdup (arg);
+ break;
case ARGP_KEY_ARG:
{
@@ -276,6 +281,9 @@ main (int argc, char *argv[])
dir = xstrdup (dir);
+ if (tpm_dev)
+ grub_util_tpm_open (tpm_dev);
+
/* Start GRUB! */
if (setjmp (main_env) == 0)
grub_main ();
@@ -283,6 +291,7 @@ main (int argc, char *argv[])
grub_fini_all ();
grub_hostfs_fini ();
grub_host_fini ();
+ grub_util_tpm_close ();
grub_machine_fini (GRUB_LOADER_FLAG_NORETURN);
diff --git a/grub-core/kern/emu/misc.c b/grub-core/kern/emu/misc.c
index 521220b49..1db24fde7 100644
--- a/grub-core/kern/emu/misc.c
+++ b/grub-core/kern/emu/misc.c
@@ -28,6 +28,8 @@
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include <grub/mm.h>
#include <grub/err.h>
@@ -41,6 +43,8 @@
int verbosity;
int kexecute;
+static int grub_util_tpm_fd = -1;
+
void
grub_util_warn (const char *fmt, ...)
{
@@ -230,3 +234,50 @@ grub_util_get_kexecute (void)
{
return kexecute;
}
+
+grub_err_t
+grub_util_tpm_open (const char *tpm_dev)
+{
+ if (grub_util_tpm_fd != -1)
+ return GRUB_ERR_NONE;
+
+ grub_util_tpm_fd = open (tpm_dev, O_RDWR);
+ if (grub_util_tpm_fd == -1)
+ grub_util_error (_("cannot open TPM device '%s': %s"), tpm_dev, strerror (errno));
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_util_tpm_close (void)
+{
+ int err;
+
+ if (grub_util_tpm_fd == -1)
+ return GRUB_ERR_NONE;
+
+ err = close (grub_util_tpm_fd);
+ if (err != GRUB_ERR_NONE)
+ grub_util_error (_("cannot close TPM device: %s"), strerror (errno));
+
+ grub_util_tpm_fd = -1;
+ return GRUB_ERR_NONE;
+}
+
+grub_size_t
+grub_util_tpm_read (void *output, grub_size_t size)
+{
+ if (grub_util_tpm_fd == -1)
+ return -1;
+
+ return read (grub_util_tpm_fd, output, size);
+}
+
+grub_size_t
+grub_util_tpm_write (const void *input, grub_size_t size)
+{
+ if (grub_util_tpm_fd == -1)
+ return -1;
+
+ return write (grub_util_tpm_fd, input, size);
+}
diff --git a/grub-core/tpm2/tcg2-emu.c b/grub-core/tpm2/tcg2-emu.c
new file mode 100644
index 000000000..0d7b8b16e
--- /dev/null
+++ b/grub-core/tpm2/tcg2-emu.c
@@ -0,0 +1,52 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2024 SUSE LLC
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/efi/api.h>
+#include <grub/efi/efi.h>
+#include <grub/efi/tpm.h>
+#include <grub/mm.h>
+#include <grub/tpm2/buffer.h>
+#include <grub/tpm2/tcg2.h>
+#include <grub/emu/misc.h>
+
+grub_err_t
+grub_tcg2_get_max_output_size (grub_size_t *size)
+{
+ if (size == NULL)
+ return GRUB_ERR_BAD_ARGUMENT;
+
+ *size = GRUB_TPM2_BUFFER_CAPACITY;
+
+ return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_tcg2_submit_command (grub_size_t input_size, grub_uint8_t *input,
+ grub_size_t output_size, grub_uint8_t *output)
+{
+ static const grub_size_t header_size = sizeof (grub_uint16_t) +
+ (2 * sizeof(grub_uint32_t));
+
+ if (grub_util_tpm_write (input, input_size) != input_size)
+ return GRUB_ERR_BAD_DEVICE;
+
+ if (grub_util_tpm_read (output, output_size) < header_size)
+ return GRUB_ERR_BAD_DEVICE;
+
+ return GRUB_ERR_NONE;
+}
diff --git a/include/grub/emu/misc.h b/include/grub/emu/misc.h
index 01056954b..1ab8152be 100644
--- a/include/grub/emu/misc.h
+++ b/include/grub/emu/misc.h
@@ -75,4 +75,9 @@ grub_util_fopen (const char *path, const char *mode);
int grub_util_file_sync (FILE *f);
+grub_err_t grub_util_tpm_open (const char *tpm_dev);
+grub_err_t grub_util_tpm_close (void);
+grub_size_t EXPORT_FUNC(grub_util_tpm_read) (void *output, grub_size_t size);
+grub_size_t EXPORT_FUNC(grub_util_tpm_write) (const void *input, grub_size_t size);
+
#endif /* GRUB_EMU_MISC_H */
--
2.35.3
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [PATCH v12 20/20] tests: Add tpm2_test
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
` (18 preceding siblings ...)
2024-04-19 8:31 ` [PATCH v12 19/20] tpm2: Enable tpm2 module for grub-emu Gary Lin via Grub-devel
@ 2024-04-19 8:31 ` Gary Lin via Grub-devel
2024-04-19 13:12 ` Stefan Berger
19 siblings, 1 reply; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-19 8:31 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp, Stefan Berger
For the tpm2 module, the TCG2 command submission function is the only
difference between the a QEMU instance and grub-emu. To test TPM key
unsealing with a QEMU instance, it requires an extra OS image to invoke
grub-protect to seal the LUKS key, rather than a simple grub-shell rescue
CD image. On the other hand, grub-emu can share the emulated TPM device
with the host, so that we can seal the LUKS key on host and test key
unsealing with grub-emu.
This test script firstly creates a simple LUKS image to be loaded as a
loopback device in grub-emu. Then an emulated TPM device is created by
swtpm_cuse and PCR 0 and 1 are extended.
There are several test cases in the script to test various settings. Each
test case uses grub-protect or tpm2-tools to seal the LUKS password
against PCR 0 and PCR 1. Then grub-emu is launched to load the LUKS image,
try to mount the image with tpm2_key_protector_init and cryptomount, and
verify the result.
Based on the idea from Michael Chang.
Cc: Michael Chang <mchang@suse.com>
Cc: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Gary Lin <glin@suse.com>
---
Makefile.util.def | 6 +
tests/tpm2_test.in | 311 +++++++++++++++++++++++++++++++++++++++
tests/util/grub-shell.in | 6 +-
3 files changed, 322 insertions(+), 1 deletion(-)
create mode 100644 tests/tpm2_test.in
diff --git a/Makefile.util.def b/Makefile.util.def
index 40bfe713d..8d4c53a03 100644
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -1281,6 +1281,12 @@ script = {
common = tests/asn1_test.in;
};
+script = {
+ testcase = native;
+ name = tpm2_test;
+ common = tests/tpm2_test.in;
+};
+
program = {
testcase = native;
name = example_unit_test;
diff --git a/tests/tpm2_test.in b/tests/tpm2_test.in
new file mode 100644
index 000000000..697319c75
--- /dev/null
+++ b/tests/tpm2_test.in
@@ -0,0 +1,311 @@
+#! @BUILD_SHEBANG@ -e
+
+# Test GRUBs ability to unseal a LUKS key with TPM 2.0
+# Copyright (C) 2024 Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+
+grubshell=@builddir@/grub-shell
+
+. "@builddir@/grub-core/modinfo.sh"
+
+if [ x$grub_modinfo_platform != xemu ]; then
+ exit 77
+fi
+
+builddir="@builddir@"
+
+# Force build directory components
+PATH="${builddir}:$PATH"
+export PATH
+
+if [ "x$EUID" = "x" ] ; then
+ EUID=`id -u`
+fi
+
+if [ "$EUID" != 0 ] ; then
+ echo "not root; cannot test tpm2."
+ exit 99
+fi
+
+if ! which cryptsetup >/dev/null 2>&1; then
+ echo "cryptsetup not installed; cannot test tpm2."
+ exit 99
+fi
+
+if ! grep -q tpm_vtpm_proxy /proc/modules && ! modprobe tpm_vtpm_proxy; then
+ echo "no tpm_vtpm_proxy support; cannot test tpm2."
+ exit 99
+fi
+
+if ! which swtpm >/dev/null 2>&1; then
+ echo "swtpm not installed; cannot test tpm2."
+ exit 99
+fi
+
+if ! which tpm2_startup >/dev/null 2>&1; then
+ echo "tpm2-tools not installed; cannot test tpm2."
+ exit 99
+fi
+
+tpm2testdir="`mktemp -d "${TMPDIR:-/tmp}/$(basename "$0").XXXXXXXXXX"`" || exit 20
+
+disksize=20M
+
+luksfile=$tpm2testdir/luks.disk
+lukskeyfile=${tpm2testdir}/password.txt
+
+# Choose a low iteration number to reduce the time to decrypt the disk
+csopt="--type luks2 --pbkdf pbkdf2 --iter-time 1000"
+
+tpm2statedir=${tpm2testdir}/tpm
+tpm2ctrl=${tpm2statedir}/ctrl
+tpm2log=${tpm2statedir}/logfile
+
+sealedkey=${tpm2testdir}/sealed.tpm
+
+timeout=20
+
+testoutput=$tpm2testdir/testoutput
+
+vtext="TEST VERIFIED"
+
+# Create the password file
+echo -n "top secret" > ${lukskeyfile}
+
+# Setup LUKS2 image
+truncate -s ${disksize} ${luksfile} || exit 21
+cryptsetup luksFormat -q ${csopt} ${luksfile} ${lukskeyfile} || exit 22
+
+# Shutdown the swtpm instance on exit
+cleanup() {
+ RET=$?
+ if [ -e "$tpm2ctrl" ]; then
+ swtpm_ioctl -s --unix ${tpm2ctrl}
+ fi
+ if [ "${RET}" -eq 0 ]; then
+ rm -rf "$tpm2testdir" || :
+ fi
+}
+trap cleanup EXIT INT TERM KILL QUIT
+
+mkdir -p ${tpm2statedir}
+
+# Create the swtpm chardev instannce
+swtpm chardev --vtpm-proxy --tpmstate dir=${tpm2statedir} \
+ --tpm2 --ctrl type=unixio,path=${tpm2ctrl} \
+ --flags startup-clear --daemon > ${tpm2log}
+ret=$?
+if [ "$ret" -ne 0 ]; then
+ exit $ret
+fi
+
+tpm2dev=$(grep "New TPM device" ${tpm2log} | cut -d' ' -f 4)
+if [ -z "${tpm2dev}" ]; then
+ exit QUIT
+fi
+
+# Wait for tpm2 chardev
+wait=3
+while [ "${wait}" -gt 0 ]; do
+ if [ -c "${tpm2dev}" ]; then
+ break;
+ fi
+ sleep 1
+ ((wait--))
+done
+if [ "$wait" -le 0 ]; then
+ exit QUIT
+fi
+
+# Export the TCTI variable for tpm2-tools
+export TPM2TOOLS_TCTI="device:${tpm2dev}"
+
+# Extend PCR 0
+tpm2_pcrextend 0:sha256=$(sha256sum <<< "test0" | cut -d ' ' -f 1)
+ret=$?
+if [ "$ret" -ne 0 ]; then
+ exit $ret
+fi
+
+# Extend PCR 1
+tpm2_pcrextend 1:sha256=$(sha256sum <<< "test1" | cut -d ' ' -f 1)
+ret=$?
+if [ "$ret" -ne 0 ]; then
+ exit $ret
+fi
+
+tpm2_seal_unseal() {
+ local srk_alg="$1"
+ local handle_type="$2"
+ local srk_test="$3"
+
+ local grub_srk_alg=${srk_alg}
+
+ local extra_opt=""
+ local extra_grub_opt=""
+
+ local persistent_handle="0x81000000"
+
+ if [ "${handle_type}" == "persistent" ]; then
+ extra_opt="--tpm2-srk=${persistent_handle}"
+ fi
+
+ if [ "${srk_alg}" != "default" ]; then
+ extra_opt="${extra_opt} --tpm2-asymmetric=${srk_alg}"
+ fi
+
+ # Seal the password with grub-protect
+ grub-protect ${extra_opt} \
+ --tpm2-device=${tpm2dev} \
+ --action=add \
+ --protector=tpm2 \
+ --tpm2key \
+ --tpm2-bank=sha256 \
+ --tpm2-pcrs=0,1 \
+ --tpm2-keyfile=${lukskeyfile} \
+ --tpm2-outfile=${sealedkey}
+ ret=$?
+ if [ "$ret" -ne 0 ]; then
+ echo "Failed to seal the secret key"
+ return 1
+ fi
+
+ # Flip the asymmetric algorithm in grub.cfg to trigger fallback SRKs
+ if [ "${srk_test}" == "fallback_srk" ]; then
+ if [[ "${srk_alg}" == RSA* ]]; then
+ grub_srk_alg="ECC"
+ elif [[ "${srk_alg}" == ECC* ]]; then
+ grub_srk_alg="RSA"
+ fi
+ fi
+
+ if [ "${grub_srk_alg}" != "default" ] && [ "${handle_type}" != "persistent" ]; then
+ extra_grub_opt="-a ${grub_srk_alg}"
+ fi
+
+ # Write the TPM unsealing script
+ cat > ${tpm2testdir}/testcase.cfg <<EOF
+loopback luks (host)${luksfile}
+tpm2_key_protector_init -T (host)${sealedkey} ${extra_grub_opt}
+if cryptomount -a --protector tpm2; then
+ echo "${vtext}"
+fi
+EOF
+
+ # Test TPM unsealing with the same PCR
+ ${grubshell} --timeout=$timeout --grub-emu-opts="-t ${tpm2dev}" < ${tpm2testdir}/testcase.cfg > ${testoutput}
+ ret=$?
+
+ # Remove the persistent handle
+ if [ "${handle_type}" == "persistent" ]; then
+ grub-protect \
+ --tpm2-device=${tpm2dev} \
+ --protector=tpm2 \
+ --action=remove \
+ --tpm2-srk=${persistent_handle} \
+ --tpm2-evict
+ fi
+
+ if [ "$ret" -eq 0 ]; then
+ if ! grep -q "^${vtext}$" "$testoutput"; then
+ echo "error: test not verified [`cat $testoutput`]" >&2
+ exit 1
+ fi
+ else
+ echo "grub-emu exited with error: $ret" >&2
+ exit $ret
+ fi
+}
+
+tpm2_seal_unseal_nv() {
+ local persistent_handle="0x81000000"
+ local primary_file=${tpm2testdir}/primary.ctx
+ local session_file=${tpm2testdir}/session.dat
+ local policy_file=${tpm2testdir}/policy.dat
+ local keypub_file=${tpm2testdir}/key.pub
+ local keypriv_file=${tpm2testdir}/key.priv
+ local name_file=${tpm2testdir}/sealing.name
+ local sealing_ctx_file=${tpm2testdir}/sealing.ctx
+
+ # Since we don't run a resource manager on our swtpm instance, it has
+ # to flush the transient handles after tpm2_createprimary, tpm2_create
+ # and tpm2_load to avoid the potential out-of-memory (0x902) errors.
+ # Ref: https://github.com/tpm2-software/tpm2-tools/issues/1338#issuecomment-469689398
+
+ # Create the primary object
+ tpm2_createprimary -C o -g sha256 -G ecc -c ${primary_file} -Q
+ tpm2_flushcontext -t
+
+ # Create the policy object
+ tpm2_startauthsession -S ${session_file}
+ tpm2_policypcr -S ${session_file} -l sha256:0,1 -L ${policy_file} -Q
+ tpm2_flushcontext ${session_file}
+
+ # Seal the key into TPM
+ tpm2_create -C ${primary_file} -u ${keypub_file} -r ${keypriv_file} -L ${policy_file} -i ${lukskeyfile} -Q
+ tpm2_flushcontext -t
+ tpm2_load -C ${primary_file} -u ${keypub_file} -r ${keypriv_file} -n ${name_file} -c ${sealing_ctx_file}
+ tpm2_flushcontext -t
+ tpm2_evictcontrol -C o -c ${sealing_ctx_file} ${persistent_handle} -Q
+
+ # Write the TPM unsealing script
+ cat > ${tpm2testdir}/testcase.cfg <<EOF
+loopback luks (host)${luksfile}
+tpm2_key_protector_init --mode=nv --nvindex=${persistent_handle} --pcrs=0,1
+if cryptomount -a --protector tpm2; then
+ echo "${vtext}"
+fi
+EOF
+
+ # Test TPM unsealing with the same PCR
+ ${grubshell} --timeout=$timeout --grub-emu-opts="-t ${tpm2dev}" < ${tpm2testdir}/testcase.cfg > ${testoutput}
+ ret=$?
+
+ # Remove the persistent handle
+ grub-protect \
+ --tpm2-device=${tpm2dev} \
+ --protector=tpm2 \
+ --action=remove \
+ --tpm2-srk=${persistent_handle} \
+ --tpm2-evict
+
+ if [ "$ret" -eq 0 ]; then
+ if ! grep -q "^${vtext}$" "$testoutput"; then
+ echo "error: test not verified [`cat $testoutput`]" >&2
+ exit 1
+ fi
+ else
+ echo "grub-emu exited with error: $ret" >&2
+ exit $ret
+ fi
+}
+
+tpm2_seal_unseal default transient no_fallback_srk
+
+tpm2_seal_unseal RSA transient no_fallback_srk
+
+tpm2_seal_unseal ECC transient no_fallback_srk
+
+tpm2_seal_unseal RSA persistent no_fallback_srk
+
+tpm2_seal_unseal ECC persistent no_fallback_srk
+
+tpm2_seal_unseal RSA transient fallback_srk
+
+tpm2_seal_unseal ECC transient fallback_srk
+
+tpm2_seal_unseal_nv
+
+exit 0
diff --git a/tests/util/grub-shell.in b/tests/util/grub-shell.in
index 496e1bab3..f8642543d 100644
--- a/tests/util/grub-shell.in
+++ b/tests/util/grub-shell.in
@@ -75,6 +75,7 @@ work_directory=${WORKDIR:-`mktemp -d "${TMPDIR:-/tmp}/grub-shell.XXXXXXXXXX"`} |
. "${builddir}/grub-core/modinfo.sh"
qemuopts=
+grubemuopts=
serial_port=com0
serial_null=
halt_cmd=halt
@@ -281,6 +282,9 @@ for option in "$@"; do
--qemu-opts=*)
qs=`echo "$option" | sed -e 's/--qemu-opts=//'`
qemuopts="$qemuopts $qs" ;;
+ --grub-emu-opts=*)
+ qs=`echo "$option" | sed -e 's/--grub-emu-opts=//'`
+ grubemuopts="$grubemuopts $qs" ;;
--disk=*)
dsk=`echo "$option" | sed -e 's/--disk=//'`
if [ ${grub_modinfo_platform} = emu ]; then
@@ -576,7 +580,7 @@ elif [ x$boot = xemu ]; then
cat >"$work_directory/run.sh" <<EOF
#! @BUILD_SHEBANG@
SDIR=\$(realpath -e \${0%/*})
-exec "$(realpath -e "${builddir}")/grub-core/grub-emu" -m "\$SDIR/${device_map##*/}" --memdisk "\$SDIR/${roottar##*/}" -r memdisk -d "/boot/grub"
+exec "$(realpath -e "${builddir}")/grub-core/grub-emu" -m "\$SDIR/${device_map##*/}" --memdisk "\$SDIR/${roottar##*/}" -r memdisk -d "/boot/grub" ${grubemuopts}
EOF
else
cat >"$work_directory/run.sh" <<EOF
--
2.35.3
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^ permalink raw reply related [flat|nested] 29+ messages in thread
* Re: [PATCH v12 16/20] cryptodisk: Fallback to passphrase
2024-04-19 8:31 ` [PATCH v12 16/20] cryptodisk: Fallback to passphrase Gary Lin via Grub-devel
@ 2024-04-19 12:03 ` Stefan Berger
0 siblings, 0 replies; 29+ messages in thread
From: Stefan Berger @ 2024-04-19 12:03 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp
On 4/19/24 04:31, Gary Lin via Grub-devel wrote:
> From: Patrick Colp <patrick.colp@oracle.com>
>
> If a protector is specified, but it fails to unlock the disk, fall back
> to asking for the passphrase. However, an error was set indicating that
> the protector(s) failed. Later code (e.g., LUKS code) fails as
> `grub_errno` is now set. Print the existing errors out first, before
> proceeding with the passphrase.
>
> Cc: Stefan Berger <stefanb@linux.ibm.com>
> Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
> Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
> ---
> grub-core/disk/cryptodisk.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/grub-core/disk/cryptodisk.c b/grub-core/disk/cryptodisk.c
> index b7648ffb7..8f00f22a8 100644
> --- a/grub-core/disk/cryptodisk.c
> +++ b/grub-core/disk/cryptodisk.c
> @@ -1191,11 +1191,16 @@ grub_cryptodisk_scan_device_real (const char *name,
> source->name, source->partition != NULL ? "," : "",
> part != NULL ? part : N_("UNKNOWN"), dev->uuid);
> grub_free (part);
> - goto error;
> }
>
> if (!cargs->key_len)
> {
> + if (grub_errno)
> + {
> + grub_print_error ();
> + grub_errno = GRUB_ERR_NONE;
> + }
> +
> /* Get the passphrase from the user, if no key data. */
> askpass = 1;
> part = grub_partition_get_name (source->partition);
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 11/20] key_protector: Add TPM2 Key Protector
2024-04-19 8:30 ` [PATCH v12 11/20] key_protector: Add TPM2 Key Protector Gary Lin via Grub-devel
@ 2024-04-19 12:23 ` James Bottomley
2024-04-23 6:23 ` Gary Lin via Grub-devel
0 siblings, 1 reply; 29+ messages in thread
From: James Bottomley @ 2024-04-19 12:23 UTC (permalink / raw)
To: Gary Lin, The development of GNU GRUB
Cc: Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, mchang, patrick.colp, Stefan Berger
On Fri, 2024-04-19 at 16:30 +0800, Gary Lin wrote:
> TPMKey ::= SEQUENCE {
> type OBJECT IDENTIFIER
> emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL
> policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL
> secret [2] EXPLICIT OCTET STRING OPTIONAL
> authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL
Now that you've got rsaParent [5] EXPLICIT BOOLEAN OPTIONAL, could you
use it?
Since none of this ever went upstream do the arguments really need the
old keyfile format? No-one should have created one, so using the
tpm2key format going forwards and eliminating the additional policy
arguments should simplify the user facing piece. Even if SUSE has
released something with the old format, since the new key file has a
more expressive policy it should be easy to convert to it to the
tpm2key format.
The other thing is this:
> + .longarg = "asymmetric",
> + .shortarg = 'a',
> + .flags = 0,
> + .arg = NULL,
> + .type = ARG_TYPE_STRING,
> + .doc =
> + N_("In SRK mode, the type of SRK: RSA (RSA2048), RSA3072, "
> + "RSA4096, ECC (ECC_NIST_P256), ECC_NIST_P384, "
> + "ECC_NIST_P521, and ECC_SM2_P256. (default: ECC)"),
The TCG has only defined two types of SRK templates for
interoperability: P-256 and RSA2048 (both with 128 bit AES symmetric
keys):
https://trustedcomputinggroup.org/resource/http-trustedcomputinggroup-org-wp-content-uploads-tcg-ek-credential-profile-v-2-5-r2_published-pdf/
The others are all non-standard and shouldn't be included (they'll just
cause interoperability issues for people who insist on trying out every
option and then complain about the problems this causes).
James
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 20/20] tests: Add tpm2_test
2024-04-19 8:31 ` [PATCH v12 20/20] tests: Add tpm2_test Gary Lin via Grub-devel
@ 2024-04-19 13:12 ` Stefan Berger
2024-04-23 6:30 ` Gary Lin via Grub-devel
0 siblings, 1 reply; 29+ messages in thread
From: Stefan Berger @ 2024-04-19 13:12 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp
On 4/19/24 04:31, Gary Lin via Grub-devel wrote:
> For the tpm2 module, the TCG2 command submission function is the only
> difference between the a QEMU instance and grub-emu. To test TPM key
> unsealing with a QEMU instance, it requires an extra OS image to invoke
> grub-protect to seal the LUKS key, rather than a simple grub-shell rescue
> CD image. On the other hand, grub-emu can share the emulated TPM device
> with the host, so that we can seal the LUKS key on host and test key
> unsealing with grub-emu.
>
> This test script firstly creates a simple LUKS image to be loaded as a
> loopback device in grub-emu. Then an emulated TPM device is created by
> swtpm_cuse and PCR 0 and 1 are extended.
>
> There are several test cases in the script to test various settings. Each
> test case uses grub-protect or tpm2-tools to seal the LUKS password
> against PCR 0 and PCR 1. Then grub-emu is launched to load the LUKS image,
> try to mount the image with tpm2_key_protector_init and cryptomount, and
> verify the result.
>
> Based on the idea from Michael Chang.
>
> Cc: Michael Chang <mchang@suse.com>
> Cc: Stefan Berger <stefanb@linux.ibm.com>
> Signed-off-by: Gary Lin <glin@suse.com>
> ---
> Makefile.util.def | 6 +
> tests/tpm2_test.in | 311 +++++++++++++++++++++++++++++++++++++++
> tests/util/grub-shell.in | 6 +-
> 3 files changed, 322 insertions(+), 1 deletion(-)
> create mode 100644 tests/tpm2_test.in
>
> diff --git a/Makefile.util.def b/Makefile.util.def
> index 40bfe713d..8d4c53a03 100644
> --- a/Makefile.util.def
> +++ b/Makefile.util.def
> @@ -1281,6 +1281,12 @@ script = {
> common = tests/asn1_test.in;
> };
>
> +script = {
> + testcase = native;
> + name = tpm2_test;
> + common = tests/tpm2_test.in;
> +};
> +
> program = {
> testcase = native;
> name = example_unit_test;
> diff --git a/tests/tpm2_test.in b/tests/tpm2_test.in
> new file mode 100644
> index 000000000..697319c75
> --- /dev/null
> +++ b/tests/tpm2_test.in
> @@ -0,0 +1,311 @@
> +#! @BUILD_SHEBANG@ -e
> +
> +# Test GRUBs ability to unseal a LUKS key with TPM 2.0
> +# Copyright (C) 2024 Free Software Foundation, Inc.
> +#
> +# GRUB is free software: you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation, either version 3 of the License, or
> +# (at your option) any later version.
> +#
> +# GRUB is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
> +
> +grubshell=@builddir@/grub-shell
> +
> +. "@builddir@/grub-core/modinfo.sh"
> +
> +if [ x$grub_modinfo_platform != xemu ]; then
> + exit 77
> +fi
> +
> +builddir="@builddir@"
> +
> +# Force build directory components
> +PATH="${builddir}:$PATH"
> +export PATH
> +
> +if [ "x$EUID" = "x" ] ; then
> + EUID=`id -u`
> +fi
> +
> +if [ "$EUID" != 0 ] ; then
> + echo "not root; cannot test tpm2."
> + exit 99
> +fi
> +
> +if ! which cryptsetup >/dev/null 2>&1; then
> + echo "cryptsetup not installed; cannot test tpm2."
> + exit 99
> +fi
> +
> +if ! grep -q tpm_vtpm_proxy /proc/modules && ! modprobe tpm_vtpm_proxy; then
> + echo "no tpm_vtpm_proxy support; cannot test tpm2."
> + exit 99
> +fi
> +
> +if ! which swtpm >/dev/null 2>&1; then
> + echo "swtpm not installed; cannot test tpm2."
> + exit 99
> +fi
> +
> +if ! which tpm2_startup >/dev/null 2>&1; then
> + echo "tpm2-tools not installed; cannot test tpm2."
> + exit 99
> +fi
> +
> +tpm2testdir="`mktemp -d "${TMPDIR:-/tmp}/$(basename "$0").XXXXXXXXXX"`" || exit 20
> +
> +disksize=20M
> +
> +luksfile=$tpm2testdir/luks.disk
> +lukskeyfile=${tpm2testdir}/password.txt
> +
> +# Choose a low iteration number to reduce the time to decrypt the disk
> +csopt="--type luks2 --pbkdf pbkdf2 --iter-time 1000"
> +
> +tpm2statedir=${tpm2testdir}/tpm
> +tpm2ctrl=${tpm2statedir}/ctrl
> +tpm2log=${tpm2statedir}/logfile
> +
> +sealedkey=${tpm2testdir}/sealed.tpm
> +
> +timeout=20
> +
> +testoutput=$tpm2testdir/testoutput
> +
> +vtext="TEST VERIFIED"
> +
> +# Create the password file
> +echo -n "top secret" > ${lukskeyfile}
> +
> +# Setup LUKS2 image
> +truncate -s ${disksize} ${luksfile} || exit 21
> +cryptsetup luksFormat -q ${csopt} ${luksfile} ${lukskeyfile} || exit 22
> +
> +# Shutdown the swtpm instance on exit
> +cleanup() {
> + RET=$?
> + if [ -e "$tpm2ctrl" ]; then
> + swtpm_ioctl -s --unix ${tpm2ctrl}
> + fi
> + if [ "${RET}" -eq 0 ]; then
> + rm -rf "$tpm2testdir" || :
> + fi
> +}
> +trap cleanup EXIT INT TERM KILL QUIT
> +
> +mkdir -p ${tpm2statedir}
> +
> +# Create the swtpm chardev instannce
instance
> +swtpm chardev --vtpm-proxy --tpmstate dir=${tpm2statedir} \
> + --tpm2 --ctrl type=unixio,path=${tpm2ctrl} \
> + --flags startup-clear --daemon > ${tpm2log}
> +ret=$?
> +if [ "$ret" -ne 0 ]; then
> + exit $ret
> +fi
> +
> +tpm2dev=$(grep "New TPM device" ${tpm2log} | cut -d' ' -f 4)
I would add this into the loop below because timing-wise swtpm would
have to be fast to have shown this output.
> +if [ -z "${tpm2dev}" ]; then
> + exit QUIT
> +fi
> +
> +# Wait for tpm2 chardev
> +wait=3
> +while [ "${wait}" -gt 0 ]; do
> + if [ -c "${tpm2dev}" ]; then
> + break;
> + fi
> + sleep 1
> + ((wait--))
> +done
> +if [ "$wait" -le 0 ]; then
echo "TPM device did not appear"
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 18/20] diskfilter: look up cryptodisk devices first
2024-04-19 8:31 ` [PATCH v12 18/20] diskfilter: look up cryptodisk devices first Gary Lin via Grub-devel
@ 2024-04-19 13:20 ` Stefan Berger
0 siblings, 0 replies; 29+ messages in thread
From: Stefan Berger @ 2024-04-19 13:20 UTC (permalink / raw)
To: grub-devel
On 4/19/24 04:31, Gary Lin via Grub-devel wrote:
> When using disk auto-unlocking with TPM 2.0, the typical grub.cfg may
> look like this:
>
> tpm2_key_protector_init --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
> cryptomount -u <PART-UUID> -P tpm2
> search --fs-uuid --set=root <FS-UUID>
>
> Since the disk search order is based on the order of module loading, the
> attacker could insert a malicious disk with the same FS-UUID root to
> trick grub2 to boot into th malicious root and further dump memory to
s/th /the /
> steal the unsealed key.
>
> To defend such attack, we can specify the hint provided by 'grub-probe'
Do defend against such an attack
> to search the encrypted partition first:
>
> search --fs-uuid --set=root --hint='cryptouuid/<PART-UUID>' <FS-UUID>
>
> However, for LVM on a encrypted partition, the search hint provided by
s/a /an /
> 'grub-probe' is:
>
> --hint='lvmid/<VG-UUID>/<LV-UUID>'
>
> It doesn't guarantee to look up the logical volume from the encrypted
> partition, so the attacker may have the chance to fool grub2 to boot
> into the malicious disk.
>
> To mininize the attack surface, this commit tweaks the disk device search
minimize
> in diskfilter to look up cryptodisk devices first and then others, so
> that the auto-unlocked disk will be found first, not the attacker's disk.
>
> Signed-off-by: Gary Lin <glin@suse.com>
> Cc: Fabian Vogt <fvogt@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
> ---
> grub-core/disk/diskfilter.c | 35 ++++++++++++++++++++++++++---------
> 1 file changed, 26 insertions(+), 9 deletions(-)
>
> diff --git a/grub-core/disk/diskfilter.c b/grub-core/disk/diskfilter.c
> index 21e239511..df1992305 100644
> --- a/grub-core/disk/diskfilter.c
> +++ b/grub-core/disk/diskfilter.c
> @@ -226,15 +226,32 @@ scan_devices (const char *arname)
> int need_rescan;
>
> for (pull = 0; pull < GRUB_DISK_PULL_MAX; pull++)
> - for (p = grub_disk_dev_list; p; p = p->next)
> - if (p->id != GRUB_DISK_DEVICE_DISKFILTER_ID
> - && p->disk_iterate)
> - {
> - if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
> - return;
> - if (arname && is_lv_readable (find_lv (arname), 1))
> - return;
> - }
> + {
> + /* look up the crytodisk devices first */
> + for (p = grub_disk_dev_list; p; p = p->next)
> + if (p->id == GRUB_DISK_DEVICE_CRYPTODISK_ID
> + && p->disk_iterate)
> + {
> + if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
> + return;
> + if (arname && is_lv_readable (find_lv (arname), 1))
> + return;
> + break;
> + }
> +
> + /* check the devices other than crytodisk */
> + for (p = grub_disk_dev_list; p; p = p->next)
> + if (p->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
> + continue;
> + else if (p->id != GRUB_DISK_DEVICE_DISKFILTER_ID
> + && p->disk_iterate)
> + {
> + if ((p->disk_iterate) (scan_disk_hook, NULL, pull))
> + return;
> + if (arname && is_lv_readable (find_lv (arname), 1))
> + return;
> + }
> + }
>
> scan_depth = 0;
> need_rescan = 1;
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 13/20] util/grub-protect: Add new tool
2024-04-19 8:30 ` [PATCH v12 13/20] util/grub-protect: Add new tool Gary Lin via Grub-devel
@ 2024-04-19 13:56 ` Stefan Berger
0 siblings, 0 replies; 29+ messages in thread
From: Stefan Berger @ 2024-04-19 13:56 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp
On 4/19/24 04:30, Gary Lin via Grub-devel wrote:
> From: Hernan Gatta <hegatta@linux.microsoft.com>
>
> To utilize the key protectors framework, there must be a way to protect
> full-disk encryption keys in the first place. The grub-protect tool
> includes support for the TPM2 key protector but other protectors that
> require setup ahead of time can be supported in the future.
>
> For the TPM2 key protector, the intended flow is for a user to have a
> LUKS 1 or LUKS 2-protected fully-encrypted disk. The user then creates a
> new LUKS key file, say by reading /dev/urandom into a file, and creates
> a new LUKS key slot for this key. Then, the user invokes the grub-protect
> tool to seal this key file to a set of PCRs using the system's TPM 2.0.
> The resulting sealed key file is stored in an unencrypted partition such
> as the EFI System Partition (ESP) so that GRUB may read it. The user also
> has to ensure the cryptomount command is included in GRUB's boot script
> and that it carries the requisite key protector (-P) parameter.
>
> Sample usage:
>
> $ dd if=/dev/urandom of=luks-key bs=1 count=32
> $ sudo cryptsetup luksAddKey /dev/sdb1 luks-key --pbkdf=pbkdf2 --hash=sha512
>
> To seal the key with TPM 2.0 Key File (recommended):
>
> $ sudo grub-protect --action=add \
> --protector=tpm2 \
> --tpm2-pcrs=0,2,4,7,9 \
> --tpm2key \
> --tpm2-keyfile=luks-key \
> --tpm2-outfile=/boot/efi/boot/grub2/sealed.tpm
>
> Or, to seal the key with the raw sealed key:
>
> $ sudo grub-protect --action=add \
> --protector=tpm2 \
> --tpm2-pcrs=0,2,4,7,9 \
> --tpm2-keyfile=luks-key \
> --tpm2-outfile=/boot/efi/boot/grub2/sealed.key
>
> Then, in the boot script, for TPM 2.0 Key File:
>
> tpm2_key_protector_init --tpm2key=(hd0,gpt1)/boot/grub2/sealed.tpm
> cryptomount -u <SDB1_UUID> -P tpm2
>
> Or, for the raw sealed key:
>
> tpm2_key_protector_init --keyfile=(hd0,gpt1)/boot/grub2/sealed.key --pcrs=0,2,4,7,9
> cryptomount -u <SDB1_UUID> -P tpm2
>
> The benefit of using TPM 2.0 Key File is that the PCR set is already
> written in the key file, so there is no need to specify PCRs when
> invoking tpm2_key_protector_init.
>
> Cc: Stefan Berger <stefanb@linux.ibm.com>
> Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
> Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS)
2024-04-19 8:30 ` [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS) Gary Lin via Grub-devel
@ 2024-04-19 16:35 ` Stefan Berger
0 siblings, 0 replies; 29+ messages in thread
From: Stefan Berger @ 2024-04-19 16:35 UTC (permalink / raw)
To: The development of GNU GRUB
Cc: Gary Lin, Hernan Gatta, Daniel Axtens, Daniel Kiper, shkhisti,
jaskaran.khurana, christopher.co, daniel.mihai, jaredz,
development, jejb, mchang, patrick.colp
On 4/19/24 04:30, Gary Lin via Grub-devel wrote:
> From: Hernan Gatta <hegatta@linux.microsoft.com>
>
> A Trusted Platform Module (TPM) Software Stack (TSS) provides logic to
> compose and submit TPM commands and parse reponses.
>
> A limited number of TPM commands may be accessed via the EFI TCG2
> protocol. This protocol exposes functionality that is primarily geared
> toward TPM usage within the context of Secure Boot. For all other TPM
> commands, however, such as sealing and unsealing, this protocol does not
> provide any help, with the exception of passthrough command submission.
>
> The SubmitCommand method allows a caller to send raw commands to the
> system's TPM and to receive the corresponding response. These
> command/response pairs are formatted using the TPM wire protocol. To
> construct commands in this way, and to parse the TPM's response, it is
> necessary to, first, possess knowledge of the various TPM structures, and,
> second, of the TPM wire protocol itself.
>
> As such, this patch includes a set of header files that define the
> necessary TPM structures and TSS functions, implementations of various
> TPM2_* functions (inventoried below), and logic to write and read command
> and response buffers, respectively, using the TPM wire protocol.
>
> Functions: TPM2_Create, TPM2_CreatePrimary, TPM2_EvictControl,
> TPM2_FlushContext, TPM2_Load, TPM2_PCR_Read, TPM2_PolicyGetDigest,
> TPM2_PolicyPCR, TPM2_ReadPublic, TPM2_StartAuthSession, TPM2_Unseal,
> TPM2_LoadExternal, TPM2_Hash, TPM2_VerifySignature,
> TPM2_PolicyAuthorize, TPM2_TestParms
>
> Cc: Stefan Berger <stefanb@linux.ibm.com>
> Signed-off-by: Hernan Gatta <hegatta@linux.microsoft.com>
> Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 11/20] key_protector: Add TPM2 Key Protector
2024-04-19 12:23 ` James Bottomley
@ 2024-04-23 6:23 ` Gary Lin via Grub-devel
0 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-23 6:23 UTC (permalink / raw)
To: James Bottomley
Cc: Gary Lin, The development of GNU GRUB, Hernan Gatta,
Daniel Axtens, Daniel Kiper, shkhisti, jaskaran.khurana,
christopher.co, daniel.mihai, jaredz, development, mchang,
patrick.colp, Stefan Berger
On Fri, Apr 19, 2024 at 08:23:44AM -0400, James Bottomley wrote:
> On Fri, 2024-04-19 at 16:30 +0800, Gary Lin wrote:
> > TPMKey ::= SEQUENCE {
> > type OBJECT IDENTIFIER
> > emptyAuth [0] EXPLICIT BOOLEAN OPTIONAL
> > policy [1] EXPLICIT SEQUENCE OF TPMPolicy OPTIONAL
> > secret [2] EXPLICIT OCTET STRING OPTIONAL
> > authPolicy [3] EXPLICIT SEQUENCE OF TPMAuthPolicy OPTIONAL
>
> Now that you've got rsaParent [5] EXPLICIT BOOLEAN OPTIONAL, could you
> use it?
>
Sure. I will add rsaParent in v13.
> Since none of this ever went upstream do the arguments really need the
> old keyfile format? No-one should have created one, so using the
> tpm2key format going forwards and eliminating the additional policy
> arguments should simplify the user facing piece. Even if SUSE has
> released something with the old format, since the new key file has a
> more expressive policy it should be easy to convert to it to the
> tpm2key format.
>
I'd like to keep the old key format so that we can migrate the
installation script gradually.
> The other thing is this:
>
> > + .longarg = "asymmetric",
> > + .shortarg = 'a',
> > + .flags = 0,
> > + .arg = NULL,
> > + .type = ARG_TYPE_STRING,
> > + .doc =
> > + N_("In SRK mode, the type of SRK: RSA (RSA2048), RSA3072, "
> > + "RSA4096, ECC (ECC_NIST_P256), ECC_NIST_P384, "
> > + "ECC_NIST_P521, and ECC_SM2_P256. (default: ECC)"),
>
> The TCG has only defined two types of SRK templates for
> interoperability: P-256 and RSA2048 (both with 128 bit AES symmetric
> keys):
>
> https://trustedcomputinggroup.org/resource/http-trustedcomputinggroup-org-wp-content-uploads-tcg-ek-credential-profile-v-2-5-r2_published-pdf/
>
> The others are all non-standard and shouldn't be included (they'll just
> cause interoperability issues for people who insist on trying out every
> option and then complain about the problems this causes).
>
Ok, I will remove the non-standard SRK in v13.
Gary Lin
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^ permalink raw reply [flat|nested] 29+ messages in thread
* Re: [PATCH v12 20/20] tests: Add tpm2_test
2024-04-19 13:12 ` Stefan Berger
@ 2024-04-23 6:30 ` Gary Lin via Grub-devel
0 siblings, 0 replies; 29+ messages in thread
From: Gary Lin via Grub-devel @ 2024-04-23 6:30 UTC (permalink / raw)
To: Stefan Berger
Cc: Gary Lin, The development of GNU GRUB, Hernan Gatta,
Daniel Axtens, Daniel Kiper, shkhisti, jaskaran.khurana,
christopher.co, daniel.mihai, jaredz, development, jejb, mchang,
patrick.colp
On Fri, Apr 19, 2024 at 09:12:00AM -0400, Stefan Berger wrote:
>
>
> On 4/19/24 04:31, Gary Lin via Grub-devel wrote:
> > For the tpm2 module, the TCG2 command submission function is the only
> > difference between the a QEMU instance and grub-emu. To test TPM key
> > unsealing with a QEMU instance, it requires an extra OS image to invoke
> > grub-protect to seal the LUKS key, rather than a simple grub-shell rescue
> > CD image. On the other hand, grub-emu can share the emulated TPM device
> > with the host, so that we can seal the LUKS key on host and test key
> > unsealing with grub-emu.
> >
> > This test script firstly creates a simple LUKS image to be loaded as a
> > loopback device in grub-emu. Then an emulated TPM device is created by
> > swtpm_cuse and PCR 0 and 1 are extended.
> >
> > There are several test cases in the script to test various settings. Each
> > test case uses grub-protect or tpm2-tools to seal the LUKS password
> > against PCR 0 and PCR 1. Then grub-emu is launched to load the LUKS image,
> > try to mount the image with tpm2_key_protector_init and cryptomount, and
> > verify the result.
> >
> > Based on the idea from Michael Chang.
> >
> > Cc: Michael Chang <mchang@suse.com>
> > Cc: Stefan Berger <stefanb@linux.ibm.com>
> > Signed-off-by: Gary Lin <glin@suse.com>
> > ---
> > Makefile.util.def | 6 +
> > tests/tpm2_test.in | 311 +++++++++++++++++++++++++++++++++++++++
> > tests/util/grub-shell.in | 6 +-
> > 3 files changed, 322 insertions(+), 1 deletion(-)
> > create mode 100644 tests/tpm2_test.in
> >
> > diff --git a/Makefile.util.def b/Makefile.util.def
> > index 40bfe713d..8d4c53a03 100644
> > --- a/Makefile.util.def
> > +++ b/Makefile.util.def
> > @@ -1281,6 +1281,12 @@ script = {
> > common = tests/asn1_test.in;
> > };
> > +script = {
> > + testcase = native;
> > + name = tpm2_test;
> > + common = tests/tpm2_test.in;
> > +};
> > +
> > program = {
> > testcase = native;
> > name = example_unit_test;
> > diff --git a/tests/tpm2_test.in b/tests/tpm2_test.in
> > new file mode 100644
> > index 000000000..697319c75
> > --- /dev/null
> > +++ b/tests/tpm2_test.in
> > @@ -0,0 +1,311 @@
> > +#! @BUILD_SHEBANG@ -e
> > +
> > +# Test GRUBs ability to unseal a LUKS key with TPM 2.0
> > +# Copyright (C) 2024 Free Software Foundation, Inc.
> > +#
> > +# GRUB is free software: you can redistribute it and/or modify
> > +# it under the terms of the GNU General Public License as published by
> > +# the Free Software Foundation, either version 3 of the License, or
> > +# (at your option) any later version.
> > +#
> > +# GRUB is distributed in the hope that it will be useful,
> > +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > +# GNU General Public License for more details.
> > +#
> > +# You should have received a copy of the GNU General Public License
> > +# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
> > +
> > +grubshell=@builddir@/grub-shell
> > +
> > +. "@builddir@/grub-core/modinfo.sh"
> > +
> > +if [ x$grub_modinfo_platform != xemu ]; then
> > + exit 77
> > +fi
> > +
> > +builddir="@builddir@"
> > +
> > +# Force build directory components
> > +PATH="${builddir}:$PATH"
> > +export PATH
> > +
> > +if [ "x$EUID" = "x" ] ; then
> > + EUID=`id -u`
> > +fi
> > +
> > +if [ "$EUID" != 0 ] ; then
> > + echo "not root; cannot test tpm2."
> > + exit 99
> > +fi
> > +
> > +if ! which cryptsetup >/dev/null 2>&1; then
> > + echo "cryptsetup not installed; cannot test tpm2."
> > + exit 99
> > +fi
> > +
> > +if ! grep -q tpm_vtpm_proxy /proc/modules && ! modprobe tpm_vtpm_proxy; then
> > + echo "no tpm_vtpm_proxy support; cannot test tpm2."
> > + exit 99
> > +fi
> > +
> > +if ! which swtpm >/dev/null 2>&1; then
> > + echo "swtpm not installed; cannot test tpm2."
> > + exit 99
> > +fi
> > +
> > +if ! which tpm2_startup >/dev/null 2>&1; then
> > + echo "tpm2-tools not installed; cannot test tpm2."
> > + exit 99
> > +fi
> > +
> > +tpm2testdir="`mktemp -d "${TMPDIR:-/tmp}/$(basename "$0").XXXXXXXXXX"`" || exit 20
> > +
> > +disksize=20M
> > +
> > +luksfile=$tpm2testdir/luks.disk
> > +lukskeyfile=${tpm2testdir}/password.txt
> > +
> > +# Choose a low iteration number to reduce the time to decrypt the disk
> > +csopt="--type luks2 --pbkdf pbkdf2 --iter-time 1000"
> > +
> > +tpm2statedir=${tpm2testdir}/tpm
> > +tpm2ctrl=${tpm2statedir}/ctrl
> > +tpm2log=${tpm2statedir}/logfile
> > +
> > +sealedkey=${tpm2testdir}/sealed.tpm
> > +
> > +timeout=20
> > +
> > +testoutput=$tpm2testdir/testoutput
> > +
> > +vtext="TEST VERIFIED"
> > +
> > +# Create the password file
> > +echo -n "top secret" > ${lukskeyfile}
> > +
> > +# Setup LUKS2 image
> > +truncate -s ${disksize} ${luksfile} || exit 21
> > +cryptsetup luksFormat -q ${csopt} ${luksfile} ${lukskeyfile} || exit 22
> > +
> > +# Shutdown the swtpm instance on exit
> > +cleanup() {
> > + RET=$?
> > + if [ -e "$tpm2ctrl" ]; then
> > + swtpm_ioctl -s --unix ${tpm2ctrl}
> > + fi
> > + if [ "${RET}" -eq 0 ]; then
> > + rm -rf "$tpm2testdir" || :
> > + fi
> > +}
> > +trap cleanup EXIT INT TERM KILL QUIT
> > +
> > +mkdir -p ${tpm2statedir}
> > +
> > +# Create the swtpm chardev instannce
>
> instance
>
Will fix in v13.
> > +swtpm chardev --vtpm-proxy --tpmstate dir=${tpm2statedir} \
> > + --tpm2 --ctrl type=unixio,path=${tpm2ctrl} \
> > + --flags startup-clear --daemon > ${tpm2log}
> > +ret=$?
> > +if [ "$ret" -ne 0 ]; then
> > + exit $ret
> > +fi
> > +
> > +tpm2dev=$(grep "New TPM device" ${tpm2log} | cut -d' ' -f 4)
>
> I would add this into the loop below because timing-wise swtpm would have to
> be fast to have shown this output.
>
Ok, it's safer to wait a bit longer to look into the log file.
> > +if [ -z "${tpm2dev}" ]; then
> > + exit QUIT
> > +fi
> > +
> > +# Wait for tpm2 chardev
> > +wait=3
> > +while [ "${wait}" -gt 0 ]; do
> > + if [ -c "${tpm2dev}" ]; then
> > + break;
> > + fi
> > + sleep 1
> > + ((wait--))
> > +done
> > +if [ "$wait" -le 0 ]; then
>
> echo "TPM device did not appear"
>
Will add in v13.
Thanks,
Gary Lin
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^ permalink raw reply [flat|nested] 29+ messages in thread
end of thread, other threads:[~2024-04-23 6:31 UTC | newest]
Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-04-19 8:30 [PATCH v12 00/20] Automatic Disk Unlock with TPM2 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 01/20] posix_wrap: tweaks in preparation for libtasn1 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 02/20] libtasn1: import libtasn1-4.19.0 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 03/20] libtasn1: disable code not needed in grub Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 04/20] libtasn1: changes for grub compatibility Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 05/20] libtasn1: fix the potential buffer overrun Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 06/20] libtasn1: compile into asn1 module Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 07/20] asn1_test: test module for libtasn1 Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 08/20] libtasn1: Add the documentation Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 09/20] key_protector: Add key protectors framework Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 10/20] tpm2: Add TPM Software Stack (TSS) Gary Lin via Grub-devel
2024-04-19 16:35 ` Stefan Berger
2024-04-19 8:30 ` [PATCH v12 11/20] key_protector: Add TPM2 Key Protector Gary Lin via Grub-devel
2024-04-19 12:23 ` James Bottomley
2024-04-23 6:23 ` Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 12/20] cryptodisk: Support key protectors Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 13/20] util/grub-protect: Add new tool Gary Lin via Grub-devel
2024-04-19 13:56 ` Stefan Berger
2024-04-19 8:30 ` [PATCH v12 14/20] tpm2: Support authorized policy Gary Lin via Grub-devel
2024-04-19 8:30 ` [PATCH v12 15/20] tpm2: Implement NV index Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 16/20] cryptodisk: Fallback to passphrase Gary Lin via Grub-devel
2024-04-19 12:03 ` Stefan Berger
2024-04-19 8:31 ` [PATCH v12 17/20] cryptodisk: wipe out the cached keys from protectors Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 18/20] diskfilter: look up cryptodisk devices first Gary Lin via Grub-devel
2024-04-19 13:20 ` Stefan Berger
2024-04-19 8:31 ` [PATCH v12 19/20] tpm2: Enable tpm2 module for grub-emu Gary Lin via Grub-devel
2024-04-19 8:31 ` [PATCH v12 20/20] tests: Add tpm2_test Gary Lin via Grub-devel
2024-04-19 13:12 ` Stefan Berger
2024-04-23 6:30 ` Gary Lin via Grub-devel
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