* [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator
@ 2014-05-26 11:25 Stephan Mueller
2014-05-26 11:26 ` [PATCH v8 1/7] " Stephan Mueller
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:25 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
Hi,
the following set of patches implements the deterministic random bit generator
(DRBG) specified by SP800-90A.
The DRBG implementation offers the following:
* All three DRBG types are implemented with a derivation function.
* All DRBG types are available with and without prediction resistance.
* All SHA types of SHA-1, SHA-256, SHA-384, SHA-512 are available
for the HMAC and Hash DRBGs.
* All AES types of AES-128, AES-192 and AES-256 are available for the
CTR DRBG.
* A self test is implemented with drbg_healthcheck().
* The FIPS 140-2 continuous self test is implemented.
* Additional cipher primitives, such as Serpent or Twofish, can be
added to the DRBG without changing the implementation. The only
change necessary is to the DRBG definition given in the cores[]
array.
As defined in SP800-131A, the ANSI X9.31 DRNG is to be sunset by the end of
this year for official uses, including FIPS 140-2 compliance.
Additional tests including the CAVS test framework are available at [1].
[1] http://www.chronox.de/drbg.html
Changes v2:
* Overhauling code structure for simpler code as suggested by Rafael
Aquini:
- each DRBG type exports only two crypto functions,
- the individual DRBG implementations structure closely according
to
SP 800-90A,
- using struct drbg_string to refer to buffers to avoid too many
function parameters and prevent multiple data structure
conversions
- use inline more thoroughly
- replace macros with small inline functions
- remove unnecessary indirections
- replace of large stack variables with a scratch buffer allocated
at
the beginning of DRBG operation -- see comments about scratchpad
throughout the code
* Revamping DRBG flags usage: flags are only intended to select the
appropriate DRBG type and DRBG strength. Flags are not intended to be
visible to external callers.
* Adding comments throughout the code to refer to the appropriate steps
documented in SP 800-90A.
* Fix invocation of kernel crypto API hash
* Fix coding style and apply scripts/checkpatch.pl
* Change locking approach: only very small code sections are guarded by
a lock. This implies that the entire DRBG operates on a shadow copy
of the original DRBG state -- see comments for drbg_copy_drbg
* Perform thorough testing:
- Performing of a full scale CAVS test with CAVS interface available
at http://www.chronox.de/drbg.html
- Performing tests by obtaining data which is not a multiple of
cipher block size and check it with the ent tool to ensure that the
generation loop does not reuse stale buffers to avoid errors like
CVE-2013-4345.
Changes v3:
* fix invocation of drbg_sec_strength to determine the amount of seed
needed for the DRBG. The function returns information as a byte
value, but the invoker assumed a bit value.
* change default value returned by drbg_sec_strength to be the maximum
entropy defined by SP800-90A to catch erroneous invocations of the function.
* Fix invocaction of d_ops in drbg_generate: drbg->d_ops ==>
shadow->d_ops
* Make return of drbg_fips_continuous_test cleaner as suggested by
Clemens Ladisch
* Fix comments on how to invoke the DRBG at the beginning of the file
drbg_ctr_df: replace the for loop for calculation of padlen that used
to call up to 16 modulo operations with one modulo operation
* drbg_ctr_df: replace plain integer values with sizeof() to make code
clearer
* drbg_hash_hashgen: replace memset() on drbg->scratchpad with memset()
on src/dst pointers to make code clearer
* as recommended by Peter Waltenberg: add re-invocation of self tests
as required by 11.3.3 -- the tests are commented out because they make
no mathematical sense. However, if a FIPS 140-2 validation requires
these tests, the code just needs to be activated.
* as recommended by Peter Waltenberg: add error path tests as required
by 11.3.2 -- see new function of drbg_healthcheck_sanity
* add debug printk
* perform testing in FIPS 140-2 mode
* as recommended by Peter Waltenberg: add drbg_generate_long to
generate arbitrary long strings
Changes v4:
* change return codes of generate functions to signed int to convey
error codes and to match the kernel crypto API expectations on the
generate function.
* add BUG_ON throughout drbg_healthcheck_sanity() since any failure
should be caught to prevent the DRBG from operating
* change layout of debugging printk
Changes v5:
* make numerous character buffer pointers and drbg_string pointers
const as suggested by Joe Perches
Changes v6:
* change name of array cores to drbg_cores as suggested by Joe Perches
* make drbg_cores static as suggested by Joe Perches
* catch programming error regarding array overflow in drbg_algs
gracefully
Changes v7:
* editorial changes: cleanup comments and make them KNF-conformant as
requested by Rafael Aquini
* rebase patch to 3.15-rc5
Changes v8:
* fix of always triggering BUG_ON in drbg_healthcheck_sanity
* add logic to name one DRBG instance as stdrng in cra_name. The default
DRBG to be named stdrng is hard coded. Using the module option of
"stdrng", the caller can select its own stdrng DRBG.
* as recommended by Herbert Xu: cra_name is equal to cra_driver_name
(this change implies changes to the testmgr.c file)
* make drbg_fill_array more readable by replacing the parameters of
i and j with references to drbg_cores and crypto_alg
* add documentation of drbg.stdrng to Documentation/kernel-parameters.txt
* rebase patch to 3.15-rc7
Stephan Mueller (7):
SP800-90A Deterministic Random Bit Generator
header file for DRBG
DRBG kernel configuration options
compile the DRBG code
DRBG testmgr test vectors
Add DRBG test code to testmgr
Add documentation of drbg.stdrng
Documentation/kernel-parameters.txt | 10 +
crypto/Kconfig | 36 +-
crypto/Makefile | 1 +
crypto/drbg.c | 2019 +++++++++++++++++++++++++++++++++++
crypto/testmgr.c | 247 +++++
crypto/testmgr.h | 843 +++++++++++++++
include/crypto/drbg.h | 289 +++++
7 files changed, 3444 insertions(+), 1 deletion(-)
create mode 100644 crypto/drbg.c
create mode 100644 include/crypto/drbg.h
--
1.9.3
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v8 1/7] SP800-90A Deterministic Random Bit Generator
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
@ 2014-05-26 11:26 ` Stephan Mueller
2014-05-26 11:27 ` [PATCH v8 2/7] header file for DRBG Stephan Mueller
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:26 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
This is a clean-room implementation of the DRBG defined in SP800-90A.
All three viable DRBGs defined in the standard are implemented:
* HMAC: This is the leanest DRBG and compiled per default
* Hash: The more complex DRBG can be enabled at compile time
* CTR: The most complex DRBG can also be enabled at compile time
The DRBG implementation offers the following:
* All three DRBG types are implemented with a derivation function.
* All DRBG types are available with and without prediction resistance.
* All SHA types of SHA-1, SHA-256, SHA-384, SHA-512 are available for
the HMAC and Hash DRBGs.
* All AES types of AES-128, AES-192 and AES-256 are available for the
CTR DRBG.
* A self test is implemented with drbg_healthcheck().
* The FIPS 140-2 continuous self test is implemented.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
crypto/drbg.c | 2019 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 2019 insertions(+)
create mode 100644 crypto/drbg.c
diff --git a/crypto/drbg.c b/crypto/drbg.c
new file mode 100644
index 0000000..ddb2661
--- /dev/null
+++ b/crypto/drbg.c
@@ -0,0 +1,2019 @@
+/*
+ * DRBG: Deterministic Random Bits Generator
+ * Based on NIST Recommended DRBG from NIST SP800-90A with the following
+ * properties:
+ * * CTR DRBG with DF with AES-128, AES-192, AES-256 cores
+ * * Hash DRBG with DF with SHA-1, SHA-256, SHA-384, SHA-512 cores
+ * * HMAC DRBG with DF with SHA-1, SHA-256, SHA-384, SHA-512 cores
+ * * with and without prediction resistance
+ *
+ * Copyright Stephan Mueller <smueller@chronox.de>, 2014
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU General Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * DRBG Usage
+ * ==========
+ * The SP 800-90A DRBG allows the user to specify a personalization string
+ * for initialization as well as an additional information string for each
+ * random number request. The following code fragments show how a caller
+ * uses the kernel crypto API to use the full functionality of the DRBG.
+ *
+ * Usage without any additional data
+ * ---------------------------------
+ * struct crypto_rng *drng;
+ * int err;
+ * char data[DATALEN];
+ *
+ * drng = crypto_alloc_rng(drng_name, 0, 0);
+ * err = crypto_rng_get_bytes(drng, &data, DATALEN);
+ * crypto_free_rng(drng);
+ *
+ *
+ * Usage with personalization string during initialization
+ * -------------------------------------------------------
+ * struct crypto_rng *drng;
+ * int err;
+ * char data[DATALEN];
+ * struct drbg_string pers;
+ * char personalization[11] = "some-string";
+ *
+ * drbg_string_fill(&pers, personalization, strlen(personalization));
+ * drng = crypto_alloc_rng(drng_name, 0, 0);
+ * // The reset completely re-initializes the DRBG with the provided
+ * // personalization string
+ * err = crypto_rng_reset(drng, &personalization, strlen(personalization));
+ * err = crypto_rng_get_bytes(drng, &data, DATALEN);
+ * crypto_free_rng(drng);
+ *
+ *
+ * Usage with additional information string during random number request
+ * ---------------------------------------------------------------------
+ * struct crypto_rng *drng;
+ * int err;
+ * char data[DATALEN];
+ * char addtl_string[11] = "some-string";
+ * string drbg_string addtl;
+ *
+ * drbg_string_fill(&addtl, addtl_string, strlen(addtl_string));
+ * drng = crypto_alloc_rng(drng_name, 0, 0);
+ * // The following call is a wrapper to crypto_rng_get_bytes() and returns
+ * // the same error codes.
+ * err = crypto_drbg_get_bytes_addtl(drng, &data, DATALEN, &addtl);
+ * crypto_free_rng(drng);
+ *
+ *
+ * Usage with personalization and additional information strings
+ * -------------------------------------------------------------
+ * Just mix both scenarios above.
+ */
+
+#include <crypto/drbg.h>
+
+#if !defined(CONFIG_CRYPTO_DRBG_HASH) && \
+ !defined(CONFIG_CRYPTO_DRBG_HMAC) && \
+ !defined(CONFIG_CRYPTO_DRBG_CTR)
+#warning "The DRBG code is useless without compiling at least one DRBG type"
+#endif
+
+/***************************************************************
+ * Backend cipher definitions available to DRBG
+ ***************************************************************/
+
+static const struct drbg_core drbg_cores[] = {
+ /* Hash DRBGs */
+#ifdef CONFIG_CRYPTO_DRBG_HASH
+ {
+ .flags = DRBG_HASH | DRBG_STRENGTH128,
+ .statelen = 55, /* 440 bits */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 20,
+ .cra_name = "sha1",
+ .backend_cra_name = "sha1",
+ }, {
+ .flags = DRBG_HASH | DRBG_STRENGTH256,
+ .statelen = 55, /* 440 bits */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 32,
+ .cra_name = "sha256",
+ .backend_cra_name = "sha256",
+ }, {
+ .flags = DRBG_HASH | DRBG_STRENGTH256,
+ .statelen = 111, /* 888 bits */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 48,
+ .cra_name = "sha384",
+ .backend_cra_name = "sha384",
+ }, {
+ .flags = DRBG_HASH | DRBG_STRENGTH256,
+ .statelen = 111, /* 888 bits */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 64,
+ .cra_name = "sha512",
+ .backend_cra_name = "sha512",
+ },
+#endif /* CONFIG_CRYPTO_DRBG_HASH */
+#ifdef CONFIG_CRYPTO_DRBG_HMAC
+ {
+ /* HMAC DRBGs */
+ .flags = DRBG_HMAC | DRBG_STRENGTH256,
+ .statelen = 20, /* block length of cipher */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 20,
+ .cra_name = "hmac_sha1",
+ .backend_cra_name = "hmac(sha1)",
+ }, {
+ .flags = DRBG_HMAC | DRBG_STRENGTH256,
+ .statelen = 32, /* block length of cipher */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 32,
+ .cra_name = "hmac_sha256",
+ .backend_cra_name = "hmac(sha256)",
+ }, {
+ .flags = DRBG_HMAC | DRBG_STRENGTH256,
+ .statelen = 48, /* block length of cipher */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 48,
+ .cra_name = "hmac_sha384",
+ .backend_cra_name = "hmac(sha384)",
+ }, {
+ .flags = DRBG_HMAC | DRBG_STRENGTH256,
+ .statelen = 64, /* block length of cipher */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 64,
+ .cra_name = "hmac_sha512",
+ .backend_cra_name = "hmac(sha512)",
+ },
+#endif /* CONFIG_CRYPTO_DRBG_HMAC */
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+ {
+ /* block ciphers */
+ .flags = DRBG_CTR | DRBG_STRENGTH128,
+ .statelen = 32, /* 256 bits as defined in 10.2.1 */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 16,
+ .cra_name = "ctr_aes128",
+ .backend_cra_name = "ecb(aes)",
+ }, {
+ /* block ciphers */
+ .flags = DRBG_CTR | DRBG_STRENGTH192,
+ .statelen = 40, /* 320 bits as defined in 10.2.1 */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 16,
+ .cra_name = "ctr_aes192",
+ .backend_cra_name = "ecb(aes)",
+ }, {
+ /* block ciphers */
+ .flags = DRBG_CTR | DRBG_STRENGTH256,
+ .statelen = 48, /* 384 bits as defined in 10.2.1 */
+ .max_addtllen = 35,
+ .max_bits = 19,
+ .max_req = 48,
+ .blocklen_bytes = 16,
+ .cra_name = "ctr_aes256",
+ .backend_cra_name = "ecb(aes)",
+ },
+#endif /* CONFIG_CRYPTO_DRBG_CTR */
+};
+
+/******************************************************************
+ * Generic helper functions
+ ******************************************************************/
+
+/*
+ * Return strength of DRBG according to SP800-90A section 8.4
+ *
+ * @flags DRBG flags reference
+ *
+ * Return: normalized strength in *bytes* value or 32 as default
+ * to counter programming errors
+ */
+static inline unsigned short drbg_sec_strength(drbg_flag_t flags)
+{
+ switch (flags & DRBG_STRENGTH_MASK) {
+ case DRBG_STRENGTH128:
+ return 16;
+ case DRBG_STRENGTH192:
+ return 24;
+ case DRBG_STRENGTH256:
+ return 32;
+ default:
+ return 32;
+ }
+}
+
+/*
+ * FIPS 140-2 continuous self test
+ * The test is performed on the result of one round of the output
+ * function. Thus, the function implicitly knows the size of the
+ * buffer.
+ *
+ * The FIPS test can be called in an endless loop until it returns
+ * true. Although the code looks like a potential for a deadlock, it
+ * is not the case, because returning a false cannot mathematically
+ * occur (except once when a reseed took place and the updated state
+ * would is now set up such that the generation of new value returns
+ * an identical one -- this is most unlikely and would happen only once).
+ * Thus, if this function repeatedly returns false and thus would cause
+ * a deadlock, the integrity of the entire kernel is lost.
+ *
+ * @drbg DRBG handle
+ * @buf output buffer of random data to be checked
+ *
+ * return:
+ * true on success
+ * false on error
+ */
+static bool drbg_fips_continuous_test(struct drbg_state *drbg,
+ const unsigned char *buf)
+{
+#ifdef CONFIG_CRYPTO_FIPS
+ int ret = 0;
+ /* skip test if we test the overall system */
+ if (drbg->test_data)
+ return true;
+ /* only perform test in FIPS mode */
+ if (0 == fips_enabled)
+ return true;
+ if (!drbg->fips_primed) {
+ /* Priming of FIPS test */
+ memcpy(drbg->prev, buf, drbg_blocklen(drbg));
+ drbg->fips_primed = true;
+ /* return false due to priming, i.e. another round is needed */
+ return false;
+ }
+ ret = memcmp(drbg->prev, buf, drbg_blocklen(drbg));
+ memcpy(drbg->prev, buf, drbg_blocklen(drbg));
+ /* the test shall pass when the two compared values are not equal */
+ return ret != 0;
+#else
+ return true;
+#endif /* CONFIG_CRYPTO_FIPS */
+}
+
+/*
+ * Convert an integer into a byte representation of this integer.
+ * The byte representation is big-endian
+ *
+ * @buf buffer holding the converted integer
+ * @val value to be converted
+ * @buflen length of buffer
+ */
+#if (defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_CTR))
+static inline void drbg_int2byte(unsigned char *buf, uint64_t val,
+ size_t buflen)
+{
+ unsigned char *byte;
+ uint64_t i;
+
+ byte = buf + (buflen - 1);
+ for (i = 0; i < buflen; i++)
+ *(byte--) = val >> (i * 8) & 0xff;
+}
+
+/*
+ * Increment buffer
+ *
+ * @dst buffer to increment
+ * @add value to add
+ */
+static inline void drbg_add_buf(unsigned char *dst, size_t dstlen,
+ const unsigned char *add, size_t addlen)
+{
+ /* implied: dstlen > addlen */
+ unsigned char *dstptr;
+ const unsigned char *addptr;
+ unsigned int remainder = 0;
+ size_t len = addlen;
+
+ dstptr = dst + (dstlen-1);
+ addptr = add + (addlen-1);
+ while (len) {
+ remainder += *dstptr + *addptr;
+ *dstptr = remainder & 0xff;
+ remainder >>= 8;
+ len--; dstptr--; addptr--;
+ }
+ len = dstlen - addlen;
+ while (len && remainder > 0) {
+ remainder = *dstptr + 1;
+ *dstptr = remainder & 0xff;
+ remainder >>= 8;
+ len--; dstptr--;
+ }
+}
+#endif /* defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_CTR) */
+
+/******************************************************************
+ * CTR DRBG callback functions
+ ******************************************************************/
+
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+static int drbg_kcapi_sym(struct drbg_state *drbg, const unsigned char *key,
+ unsigned char *outval, const struct drbg_string *in);
+static int drbg_init_sym_kernel(struct drbg_state *drbg);
+static int drbg_fini_sym_kernel(struct drbg_state *drbg);
+
+/* BCC function for CTR DRBG as defined in 10.4.3 */
+static int drbg_ctr_bcc(struct drbg_state *drbg,
+ unsigned char *out, const unsigned char *key,
+ struct drbg_string *in)
+{
+ int ret = -EFAULT;
+ struct drbg_string *curr = in;
+ size_t inpos = curr->len;
+ const unsigned char *pos = curr->buf;
+ struct drbg_string data;
+
+ drbg_string_fill(&data, out, drbg_blocklen(drbg));
+
+ /* 10.4.3 step 1 */
+ memset(out, 0, drbg_blocklen(drbg));
+
+ /* 10.4.3 step 2 / 4 */
+ while (inpos) {
+ short cnt = 0;
+ /* 10.4.3 step 4.1 */
+ for (cnt = 0; cnt < drbg_blocklen(drbg); cnt++) {
+ out[cnt] ^= *pos;
+ pos++; inpos--;
+ /*
+ * The following branch implements the linked list
+ * iteration of drbg_string *in. If we are at the
+ * end of the current list member, we have to start
+ * using the next member if available. The inpos
+ * value always points to the current byte and will
+ * be zero if we have processed the last byte of
+ * the last linked list member.
+ */
+ if (0 == inpos) {
+ curr = curr->next;
+ if (NULL != curr) {
+ pos = curr->buf;
+ inpos = curr->len;
+ } else {
+ inpos = 0;
+ break;
+ }
+ }
+ }
+ /* 10.4.3 step 4.2 */
+ ret = drbg_kcapi_sym(drbg, key, out, &data);
+ if (ret)
+ return ret;
+ /* 10.4.3 step 2 */
+ }
+ return 0;
+}
+
+/*
+ * scratchpad usage: drbg_ctr_update is interlinked with drbg_ctr_df
+ * (and drbg_ctr_bcc, but this function does not need any temporary buffers),
+ * the scratchpad is used as follows:
+ * drbg_ctr_update:
+ * temp
+ * start: drbg->scratchpad
+ * length: drbg_statelen(drbg) + drbg_blocklen(drbg)
+ * note: the cipher writing into this variable works
+ * blocklen-wise. Now, when the statelen is not a multiple
+ * of blocklen, the generateion loop below "spills over"
+ * by at most blocklen. Thus, we need to give sufficient
+ * memory.
+ * df_data
+ * start: drbg->scratchpad +
+ * drbg_statelen(drbg) + drbg_blocklen(drbg)
+ * length: drbg_statelen(drbg)
+ *
+ * drbg_ctr_df:
+ * pad
+ * start: df_data + drbg_statelen(drbg)
+ * length: drbg_blocklen(drbg)
+ * iv
+ * start: pad + drbg_blocklen(drbg)
+ * length: drbg_blocklen(drbg)
+ * temp
+ * start: iv + drbg_blocklen(drbg)
+ * length: (drbg_keylen(drbg) + drbg_blocklen(drbg) ==
+ * drbg_statelen(drbg))
+ */
+
+/* Derivation Function for CTR DRBG as defined in 10.4.2 */
+static int drbg_ctr_df(struct drbg_state *drbg,
+ unsigned char *df_data, size_t bytes_to_return,
+ struct drbg_string *addtl)
+{
+ int ret = -EFAULT;
+ unsigned char L_N[8];
+ /* S3 is input */
+ struct drbg_string S1, S2, S4, cipherin;
+ struct drbg_string *tempstr = addtl;
+ unsigned char *pad = df_data + drbg_statelen(drbg);
+ unsigned char *iv = pad + drbg_blocklen(drbg);
+ unsigned char *temp = iv + drbg_blocklen(drbg);
+ size_t padlen = 0;
+ unsigned int templen = 0;
+ /* 10.4.2 step 7 */
+ unsigned int i = 0;
+ /* 10.4.2 step 8 */
+ const unsigned char *K = (unsigned char *)
+ "\x00\x01\x02\x03\x04\x05\x06\x07"
+ "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
+ "\x10\x11\x12\x13\x14\x15\x16\x17"
+ "\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f";
+ unsigned char *X;
+ size_t generated_len = 0;
+ size_t inputlen = 0;
+
+ memset(pad, 0, drbg_blocklen(drbg));
+ memset(iv, 0, drbg_blocklen(drbg));
+ memset(temp, 0, drbg_statelen(drbg));
+
+ /* 10.4.2 step 1 is implicit as we work byte-wise */
+
+ /* 10.4.2 step 2 */
+ if ((512/8) < bytes_to_return)
+ return -EINVAL;
+
+ /* 10.4.2 step 2 -- calculate the entire length of all input data */
+ for (; NULL != tempstr; tempstr = tempstr->next)
+ inputlen += tempstr->len;
+ drbg_int2byte(&L_N[0], inputlen, 4);
+
+ /* 10.4.2 step 3 */
+ drbg_int2byte(&L_N[4], bytes_to_return, 4);
+
+ /* 10.4.2 step 5: length is L_N, input_string, one byte, padding */
+ padlen = (inputlen + sizeof(L_N) + 1) % (drbg_blocklen(drbg));
+ /* wrap the padlen appropriately */
+ if (padlen)
+ padlen = drbg_blocklen(drbg) - padlen;
+ /*
+ * pad / padlen contains the 0x80 byte and the following zero bytes.
+ * As the calculated padlen value only covers the number of zero
+ * bytes, this value has to be incremented by one for the 0x80 byte.
+ */
+ padlen++;
+ pad[0] = 0x80;
+
+ /* 10.4.2 step 4 -- first fill the linked list and then order it */
+ drbg_string_fill(&S1, iv, drbg_blocklen(drbg));
+ drbg_string_fill(&S2, L_N, sizeof(L_N));
+ drbg_string_fill(&S4, pad, padlen);
+ S1.next = &S2;
+ S2.next = addtl;
+
+ /*
+ * splice in addtl between S2 and S4 -- we place S4 at the end of the
+ * input data chain
+ */
+ tempstr = addtl;
+ for (; NULL != tempstr; tempstr = tempstr->next)
+ if (NULL == tempstr->next)
+ break;
+ tempstr->next = &S4;
+
+ /* 10.4.2 step 9 */
+ while (templen < (drbg_keylen(drbg) + (drbg_blocklen(drbg)))) {
+ /*
+ * 10.4.2 step 9.1 - the padding is implicit as the buffer
+ * holds zeros after allocation -- even the increment of i
+ * is irrelevant as the increment remains within length of i
+ */
+ drbg_int2byte(iv, i, 4);
+ /* 10.4.2 step 9.2 -- BCC and concatenation with temp */
+ ret = drbg_ctr_bcc(drbg, temp + templen, K, &S1);
+ if (ret)
+ goto out;
+ /* 10.4.2 step 9.3 */
+ i++;
+ templen += drbg_blocklen(drbg);
+ }
+
+ /* 10.4.2 step 11 */
+ X = temp + (drbg_keylen(drbg));
+ drbg_string_fill(&cipherin, X, drbg_blocklen(drbg));
+
+ /* 10.4.2 step 12: overwriting of outval is implemented in next step */
+
+ /* 10.4.2 step 13 */
+ while (generated_len < bytes_to_return) {
+ short blocklen = 0;
+ /*
+ * 10.4.2 step 13.1: the truncation of the key length is
+ * implicit as the key is only drbg_blocklen in size based on
+ * the implementation of the cipher function callback
+ */
+ ret = drbg_kcapi_sym(drbg, temp, X, &cipherin);
+ if (ret)
+ goto out;
+ blocklen = (drbg_blocklen(drbg) <
+ (bytes_to_return - generated_len)) ?
+ drbg_blocklen(drbg) :
+ (bytes_to_return - generated_len);
+ /* 10.4.2 step 13.2 and 14 */
+ memcpy(df_data + generated_len, X, blocklen);
+ generated_len += blocklen;
+ }
+
+ ret = 0;
+
+out:
+ memset(iv, 0, drbg_blocklen(drbg));
+ memset(temp, 0, drbg_statelen(drbg));
+ memset(pad, 0, drbg_blocklen(drbg));
+ return ret;
+}
+
+/* update function of CTR DRBG as defined in 10.2.1.2 */
+static int drbg_ctr_update(struct drbg_state *drbg,
+ struct drbg_string *addtl, int reseed)
+{
+ int ret = -EFAULT;
+ /* 10.2.1.2 step 1 */
+ unsigned char *temp = drbg->scratchpad;
+ unsigned char *df_data = drbg->scratchpad + drbg_statelen(drbg) +
+ drbg_blocklen(drbg);
+ unsigned char *temp_p, *df_data_p; /* pointer to iterate over buffers */
+ unsigned int len = 0;
+ struct drbg_string cipherin;
+ unsigned char prefix = DRBG_PREFIX1;
+
+ memset(temp, 0, drbg_statelen(drbg) + drbg_blocklen(drbg));
+ memset(df_data, 0, drbg_statelen(drbg));
+
+ /* 10.2.1.3.2 step 2 and 10.2.1.4.2 step 2 */
+ if (addtl && 0 < addtl->len) {
+ ret = drbg_ctr_df(drbg, df_data, drbg_statelen(drbg),
+ addtl);
+ if (ret)
+ goto out;
+ }
+
+ drbg_string_fill(&cipherin, drbg->V, drbg_blocklen(drbg));
+ /*
+ * 10.2.1.3.2 steps 2 and 3 are already covered as the allocation
+ * zeroizes all memory during initialization
+ */
+ while (len < (drbg_statelen(drbg))) {
+ /* 10.2.1.2 step 2.1 */
+ drbg_add_buf(drbg->V, drbg_blocklen(drbg), &prefix, 1);
+ /*
+ * 10.2.1.2 step 2.2 */
+ ret = drbg_kcapi_sym(drbg, drbg->C, temp + len, &cipherin);
+ if (ret)
+ goto out;
+ /* 10.2.1.2 step 2.3 and 3 */
+ len += drbg_blocklen(drbg);
+ }
+
+ /* 10.2.1.2 step 4 */
+ temp_p = temp;
+ df_data_p = df_data;
+ for (len = 0; len < drbg_statelen(drbg); len++) {
+ *temp_p ^= *df_data_p;
+ df_data_p++; temp_p++;
+ }
+
+ /* 10.2.1.2 step 5 */
+ memcpy(drbg->C, temp, drbg_keylen(drbg));
+ /* 10.2.1.2 step 6 */
+ memcpy(drbg->V, temp + drbg_keylen(drbg), drbg_blocklen(drbg));
+ ret = 0;
+
+out:
+ memset(temp, 0, drbg_statelen(drbg) + drbg_blocklen(drbg));
+ memset(df_data, 0, drbg_statelen(drbg));
+ return ret;
+}
+
+/*
+ * scratchpad use: drbg_ctr_update is called independently from
+ * drbg_ctr_extract_bytes. Therefore, the scratchpad is reused
+ */
+/* Generate function of CTR DRBG as defined in 10.2.1.5.2 */
+static int drbg_ctr_generate(struct drbg_state *drbg,
+ unsigned char *buf, unsigned int buflen,
+ struct drbg_string *addtl)
+{
+ int len = 0;
+ int ret = 0;
+ struct drbg_string data;
+ unsigned char prefix = DRBG_PREFIX1;
+
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+
+ /* 10.2.1.5.2 step 2 */
+ if (addtl && 0 < addtl->len) {
+ addtl->next = NULL;
+ ret = drbg_ctr_update(drbg, addtl, 1);
+ if (ret)
+ return 0;
+ }
+
+ /* 10.2.1.5.2 step 4.1 */
+ drbg_add_buf(drbg->V, drbg_blocklen(drbg), &prefix, 1);
+ drbg_string_fill(&data, drbg->V, drbg_blocklen(drbg));
+ while (len < buflen) {
+ int outlen = 0;
+ /* 10.2.1.5.2 step 4.2 */
+ ret = drbg_kcapi_sym(drbg, drbg->C, drbg->scratchpad, &data);
+ if (ret) {
+ len = ret;
+ goto out;
+ }
+ outlen = (drbg_blocklen(drbg) < (buflen - len)) ?
+ drbg_blocklen(drbg) : (buflen - len);
+ if (!drbg_fips_continuous_test(drbg, drbg->scratchpad)) {
+ /* 10.2.1.5.2 step 6 */
+ drbg_add_buf(drbg->V, drbg_blocklen(drbg), &prefix, 1);
+ continue;
+ }
+ /* 10.2.1.5.2 step 4.3 */
+ memcpy(buf + len, drbg->scratchpad, outlen);
+ len += outlen;
+ /* 10.2.1.5.2 step 6 */
+ if (len < buflen)
+ drbg_add_buf(drbg->V, drbg_blocklen(drbg), &prefix, 1);
+ }
+
+ /* 10.2.1.5.2 step 6 */
+ if (addtl)
+ addtl->next = NULL;
+ /*
+ * The following call invokes the DF function again which could be
+ * optimized. In step 2, the "additional_input" after step 2 is the
+ * output of the DF function. If this result would be saved, the DF
+ * function would not need to be invoked again at this point.
+ */
+ ret = drbg_ctr_update(drbg, addtl, 1);
+ if (ret)
+ len = ret;
+
+out:
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+ return len;
+}
+
+static struct drbg_state_ops drbg_ctr_ops = {
+ .update = drbg_ctr_update,
+ .generate = drbg_ctr_generate,
+ .crypto_init = drbg_init_sym_kernel,
+ .crypto_fini = drbg_fini_sym_kernel,
+};
+#endif /* CONFIG_CRYPTO_DRBG_CTR */
+
+/******************************************************************
+ * HMAC DRBG callback functions
+ ******************************************************************/
+
+#if defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_HMAC)
+static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
+ unsigned char *outval, const struct drbg_string *in);
+static int drbg_init_hash_kernel(struct drbg_state *drbg);
+static int drbg_fini_hash_kernel(struct drbg_state *drbg);
+#endif /* (CONFIG_CRYPTO_DRBG_HASH || CONFIG_CRYPTO_DRBG_HMAC) */
+
+#ifdef CONFIG_CRYPTO_DRBG_HMAC
+/* update function of HMAC DRBG as defined in 10.1.2.2 */
+static int drbg_hmac_update(struct drbg_state *drbg,
+ struct drbg_string *seed, int reseed)
+{
+ int ret = -EFAULT;
+ int i = 0;
+ struct drbg_string seed1, seed2, cipherin;
+
+ if (!reseed) {
+ /* 10.1.2.3 step 2 */
+ memset(drbg->C, 0, drbg_statelen(drbg));
+ memset(drbg->V, 1, drbg_statelen(drbg));
+ }
+
+ drbg_string_fill(&seed1, drbg->V, drbg_statelen(drbg));
+ /* buffer of seed2 will be filled in for loop below with one byte */
+ drbg_string_fill(&seed2, NULL, 1);
+ seed1.next = &seed2;
+ /* input data of seed is allowed to be NULL at this point */
+ seed2.next = seed;
+
+ drbg_string_fill(&cipherin, drbg->V, drbg_statelen(drbg));
+ for (i = 2; 0 < i; i--) {
+ /* first round uses 0x0, second 0x1 */
+ unsigned char prefix = DRBG_PREFIX0;
+ if (1 == i)
+ prefix = DRBG_PREFIX1;
+ /* 10.1.2.2 step 1 and 4 -- concatenation and HMAC for key */
+ seed2.buf = &prefix;
+ ret = drbg_kcapi_hash(drbg, drbg->C, drbg->C, &seed1);
+ if (ret)
+ return ret;
+
+ /* 10.1.2.2 step 2 and 5 -- HMAC for V */
+ ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &cipherin);
+ if (ret)
+ return ret;
+
+ /* 10.1.2.2 step 3 */
+ if (!seed || 0 == seed->len)
+ return ret;
+ }
+
+ return 0;
+}
+
+/* generate function of HMAC DRBG as defined in 10.1.2.5 */
+static int drbg_hmac_generate(struct drbg_state *drbg,
+ unsigned char *buf,
+ unsigned int buflen,
+ struct drbg_string *addtl)
+{
+ int len = 0;
+ int ret = 0;
+ struct drbg_string data;
+
+ /* 10.1.2.5 step 2 */
+ if (addtl && 0 < addtl->len) {
+ addtl->next = NULL;
+ ret = drbg_hmac_update(drbg, addtl, 1);
+ if (ret)
+ return ret;
+ }
+
+ drbg_string_fill(&data, drbg->V, drbg_statelen(drbg));
+ while (len < buflen) {
+ unsigned int outlen = 0;
+ /* 10.1.2.5 step 4.1 */
+ ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &data);
+ if (ret)
+ return ret;
+ outlen = (drbg_blocklen(drbg) < (buflen - len)) ?
+ drbg_blocklen(drbg) : (buflen - len);
+ if (!drbg_fips_continuous_test(drbg, drbg->V))
+ continue;
+
+ /* 10.1.2.5 step 4.2 */
+ memcpy(buf + len, drbg->V, outlen);
+ len += outlen;
+ }
+
+ /* 10.1.2.5 step 6 */
+ if (addtl)
+ addtl->next = NULL;
+ ret = drbg_hmac_update(drbg, addtl, 1);
+ if (ret)
+ return ret;
+
+ return len;
+}
+
+static struct drbg_state_ops drbg_hmac_ops = {
+ .update = drbg_hmac_update,
+ .generate = drbg_hmac_generate,
+ .crypto_init = drbg_init_hash_kernel,
+ .crypto_fini = drbg_fini_hash_kernel,
+
+};
+#endif /* CONFIG_CRYPTO_DRBG_HMAC */
+
+/******************************************************************
+ * Hash DRBG callback functions
+ ******************************************************************/
+
+#ifdef CONFIG_CRYPTO_DRBG_HASH
+/*
+ * scratchpad usage: as drbg_hash_update and drbg_hash_df are used
+ * interlinked, the scratchpad is used as follows:
+ * drbg_hash_update
+ * start: drbg->scratchpad
+ * length: drbg_statelen(drbg)
+ * drbg_hash_df:
+ * start: drbg->scratchpad + drbg_statelen(drbg)
+ * length: drbg_blocklen(drbg)
+ *
+ * drbg_hash_process_addtl uses the scratchpad, but fully completes
+ * before either of the functions mentioned before are invoked. Therefore,
+ * drbg_hash_process_addtl does not need to be specifically considered.
+ */
+
+/* Derivation Function for Hash DRBG as defined in 10.4.1 */
+static int drbg_hash_df(struct drbg_state *drbg,
+ unsigned char *outval, size_t outlen,
+ struct drbg_string *entropy)
+{
+ int ret = 0;
+ size_t len = 0;
+ unsigned char input[5];
+ unsigned char *tmp = drbg->scratchpad + drbg_statelen(drbg);
+ struct drbg_string data1;
+
+ memset(tmp, 0, drbg_blocklen(drbg));
+
+ /* 10.4.1 step 3 */
+ input[0] = 1;
+ drbg_int2byte(&input[1], (outlen * 8), 4);
+
+ /* 10.4.1 step 4.1 -- concatenation of data for input into hash */
+ drbg_string_fill(&data1, input, 5);
+ data1.next = entropy;
+
+ /* 10.4.1 step 4 */
+ while (len < outlen) {
+ short blocklen = 0;
+ /* 10.4.1 step 4.1 */
+ ret = drbg_kcapi_hash(drbg, NULL, tmp, &data1);
+ if (ret)
+ goto out;
+ /* 10.4.1 step 4.2 */
+ input[0]++;
+ blocklen = (drbg_blocklen(drbg) < (outlen - len)) ?
+ drbg_blocklen(drbg) : (outlen - len);
+ memcpy(outval + len, tmp, blocklen);
+ len += blocklen;
+ }
+
+out:
+ memset(tmp, 0, drbg_blocklen(drbg));
+ return ret;
+}
+
+/* update function for Hash DRBG as defined in 10.1.1.2 / 10.1.1.3 */
+static int drbg_hash_update(struct drbg_state *drbg, struct drbg_string *seed,
+ int reseed)
+{
+ int ret = 0;
+ struct drbg_string data1, data2;
+ unsigned char *V = drbg->scratchpad;
+ unsigned char prefix = DRBG_PREFIX1;
+
+ memset(drbg->scratchpad, 0, drbg_statelen(drbg));
+ if (!seed)
+ return -EINVAL;
+
+ if (reseed) {
+ /* 10.1.1.3 step 1 */
+ memcpy(V, drbg->V, drbg_statelen(drbg));
+ drbg_string_fill(&data1, &prefix, 1);
+ drbg_string_fill(&data2, V, drbg_statelen(drbg));
+ data1.next = &data2;
+ data2.next = seed;
+ } else {
+ drbg_string_fill(&data1, seed->buf, seed->len);
+ data1.next = seed->next;
+ }
+
+ /* 10.1.1.2 / 10.1.1.3 step 2 and 3 */
+ ret = drbg_hash_df(drbg, drbg->V, drbg_statelen(drbg), &data1);
+ if (ret)
+ goto out;
+
+ /* 10.1.1.2 / 10.1.1.3 step 4 */
+ prefix = DRBG_PREFIX0;
+ drbg_string_fill(&data1, &prefix, 1);
+ drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg));
+ data1.next = &data2;
+ /* 10.1.1.2 / 10.1.1.3 step 4 */
+ ret = drbg_hash_df(drbg, drbg->C, drbg_statelen(drbg), &data1);
+
+out:
+ memset(drbg->scratchpad, 0, drbg_statelen(drbg));
+ return ret;
+}
+
+/* processing of additional information string for Hash DRBG */
+static int drbg_hash_process_addtl(struct drbg_state *drbg,
+ struct drbg_string *addtl)
+{
+ int ret = 0;
+ struct drbg_string data1, data2;
+ struct drbg_string *data3;
+ unsigned char prefix = DRBG_PREFIX2;
+
+ /* this is value w as per documentation */
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+
+ /* 10.1.1.4 step 2 */
+ if (!addtl || 0 == addtl->len)
+ return 0;
+
+ /* 10.1.1.4 step 2a */
+ drbg_string_fill(&data1, &prefix, 1);
+ drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg));
+ data3 = addtl;
+ data1.next = &data2;
+ data2.next = data3;
+ data3->next = NULL;
+ ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &data1);
+ if (ret)
+ goto out;
+
+ /* 10.1.1.4 step 2b */
+ drbg_add_buf(drbg->V, drbg_statelen(drbg),
+ drbg->scratchpad, drbg_blocklen(drbg));
+
+out:
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+ return ret;
+}
+
+/* Hashgen defined in 10.1.1.4 */
+static int drbg_hash_hashgen(struct drbg_state *drbg,
+ unsigned char *buf,
+ unsigned int buflen)
+{
+ int len = 0;
+ int ret = 0;
+ unsigned char *src = drbg->scratchpad;
+ unsigned char *dst = drbg->scratchpad + drbg_statelen(drbg);
+ struct drbg_string data;
+ unsigned char prefix = DRBG_PREFIX1;
+
+ memset(src, 0, drbg_statelen(drbg));
+ memset(dst, 0, drbg_blocklen(drbg));
+
+ /* 10.1.1.4 step hashgen 2 */
+ memcpy(src, drbg->V, drbg_statelen(drbg));
+
+ drbg_string_fill(&data, src, drbg_statelen(drbg));
+ while (len < buflen) {
+ unsigned int outlen = 0;
+ /* 10.1.1.4 step hashgen 4.1 */
+ ret = drbg_kcapi_hash(drbg, NULL, dst, &data);
+ if (ret) {
+ len = ret;
+ goto out;
+ }
+ outlen = (drbg_blocklen(drbg) < (buflen - len)) ?
+ drbg_blocklen(drbg) : (buflen - len);
+ if (!drbg_fips_continuous_test(drbg, dst)) {
+ drbg_add_buf(src, drbg_statelen(drbg), &prefix, 1);
+ continue;
+ }
+ /* 10.1.1.4 step hashgen 4.2 */
+ memcpy(buf + len, dst, outlen);
+ len += outlen;
+ /* 10.1.1.4 hashgen step 4.3 */
+ if (len < buflen)
+ drbg_add_buf(src, drbg_statelen(drbg), &prefix, 1);
+ }
+
+out:
+ memset(drbg->scratchpad, 0,
+ (drbg_statelen(drbg) + drbg_blocklen(drbg)));
+ return len;
+}
+
+/* generate function for Hash DRBG as defined in 10.1.1.4 */
+static int drbg_hash_generate(struct drbg_state *drbg,
+ unsigned char *buf, unsigned int buflen,
+ struct drbg_string *addtl)
+{
+ int len = 0;
+ int ret = 0;
+ unsigned char req[8];
+ unsigned char prefix = DRBG_PREFIX3;
+ struct drbg_string data1, data2;
+
+ /* 10.1.1.4 step 2 */
+ ret = drbg_hash_process_addtl(drbg, addtl);
+ if (ret)
+ return ret;
+ /* 10.1.1.4 step 3 */
+ len = drbg_hash_hashgen(drbg, buf, buflen);
+
+ /* this is the value H as documented in 10.1.1.4 */
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+ /* 10.1.1.4 step 4 */
+ drbg_string_fill(&data1, &prefix, 1);
+ drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg));
+ data1.next = &data2;
+ ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &data1);
+ if (ret) {
+ len = ret;
+ goto out;
+ }
+
+ /* 10.1.1.4 step 5 */
+ drbg_add_buf(drbg->V, drbg_statelen(drbg),
+ drbg->scratchpad, drbg_blocklen(drbg));
+ drbg_add_buf(drbg->V, drbg_statelen(drbg),
+ drbg->C, drbg_statelen(drbg));
+ drbg_int2byte(req, drbg->reseed_ctr, sizeof(req));
+ drbg_add_buf(drbg->V, drbg_statelen(drbg), req, 8);
+
+out:
+ memset(drbg->scratchpad, 0, drbg_blocklen(drbg));
+ return len;
+}
+
+/*
+ * scratchpad usage: as update and generate are used isolated, both
+ * can use the scratchpad
+ */
+static struct drbg_state_ops drbg_hash_ops = {
+ .update = drbg_hash_update,
+ .generate = drbg_hash_generate,
+ .crypto_init = drbg_init_hash_kernel,
+ .crypto_fini = drbg_fini_hash_kernel,
+};
+#endif /* CONFIG_CRYPTO_DRBG_HASH */
+
+/******************************************************************
+ * Functions common for DRBG implementations
+ ******************************************************************/
+
+/*
+ * Seeding or reseeding of the DRBG
+ *
+ * @drbg: DRBG state struct
+ * @pers: personalization / additional information buffer
+ * @reseed: 0 for initial seed process, 1 for reseeding
+ *
+ * return:
+ * 0 on success
+ * error value otherwise
+ */
+static int drbg_seed(struct drbg_state *drbg, struct drbg_string *pers,
+ bool reseed)
+{
+ int ret = 0;
+ unsigned char *entropy = NULL;
+ size_t entropylen = 0;
+ struct drbg_string data1;
+
+ /* 9.1 / 9.2 / 9.3.1 step 3 */
+ if (pers && pers->len > (drbg_max_addtl(drbg))) {
+ pr_devel("DRBG: personalization string too long %lu\n",
+ pers->len);
+ return -EINVAL;
+ }
+
+ if (drbg->test_data && drbg->test_data->testentropy) {
+ drbg_string_fill(&data1, drbg->test_data->testentropy->buf,
+ drbg->test_data->testentropy->len);
+ pr_devel("DRBG: using test entropy\n");
+ } else {
+ /*
+ * Gather entropy equal to the security strength of the DRBG.
+ * With a derivation function, a nonce is required in addition
+ * to the entropy. A nonce must be at least 1/2 of the security
+ * strength of the DRBG in size. Thus, entropy * nonce is 3/2
+ * of the strength. The consideration of a nonce is only
+ * applicable during initial seeding.
+ */
+ entropylen = drbg_sec_strength(drbg->core->flags);
+ if (!entropylen)
+ return -EFAULT;
+ if (!reseed)
+ entropylen = ((entropylen + 1) / 2) * 3;
+ pr_devel("DRBG: (re)seeding with %zu bytes of entropy\n",
+ entropylen);
+ entropy = kzalloc(entropylen, GFP_KERNEL);
+ if (!entropy)
+ return -ENOMEM;
+ get_random_bytes(entropy, entropylen);
+ drbg_string_fill(&data1, entropy, entropylen);
+ }
+
+ /*
+ * concatenation of entropy with personalization str / addtl input)
+ * the variable pers is directly handed in by the caller, so check its
+ * contents whether it is appropriate
+ */
+ if (pers && pers->buf && 0 < pers->len && NULL == pers->next) {
+ data1.next = pers;
+ pr_devel("DRBG: using personalization string\n");
+ }
+
+ ret = drbg->d_ops->update(drbg, &data1, reseed);
+ if (ret)
+ goto out;
+
+ drbg->seeded = true;
+ /* 10.1.1.2 / 10.1.1.3 step 5 */
+ drbg->reseed_ctr = 1;
+
+out:
+ if (entropy)
+ kzfree(entropy);
+ return ret;
+}
+
+/* Free all substructures in a DRBG state without the DRBG state structure */
+static inline void drbg_dealloc_state(struct drbg_state *drbg)
+{
+ if (!drbg)
+ return;
+ if (drbg->V)
+ kzfree(drbg->V);
+ drbg->V = NULL;
+ if (drbg->C)
+ kzfree(drbg->C);
+ drbg->C = NULL;
+ if (drbg->scratchpad)
+ kzfree(drbg->scratchpad);
+ drbg->scratchpad = NULL;
+ drbg->reseed_ctr = 0;
+#ifdef CONFIG_CRYPTO_FIPS
+ if (drbg->prev)
+ kzfree(drbg->prev);
+ drbg->prev = NULL;
+ drbg->fips_primed = false;
+#endif
+}
+
+/*
+ * Allocate all sub-structures for a DRBG state.
+ * The DRBG state structure must already be allocated.
+ */
+static inline int drbg_alloc_state(struct drbg_state *drbg)
+{
+ int ret = -ENOMEM;
+ unsigned int sb_size = 0;
+
+ if (!drbg)
+ return -EINVAL;
+
+ drbg->V = kzalloc(drbg_statelen(drbg), GFP_KERNEL);
+ if (!drbg->V)
+ goto err;
+ drbg->C = kzalloc(drbg_statelen(drbg), GFP_KERNEL);
+ if (!drbg->C)
+ goto err;
+#ifdef CONFIG_CRYPTO_FIPS
+ drbg->prev = kzalloc(drbg_blocklen(drbg), GFP_KERNEL);
+ if (!drbg->prev)
+ goto err;
+ drbg->fips_primed = false;
+#endif
+ /* scratchpad is only generated for CTR and Hash */
+ if (drbg->core->flags & DRBG_HMAC)
+ sb_size = 0;
+ else if (drbg->core->flags & DRBG_CTR)
+ sb_size = drbg_statelen(drbg) + drbg_blocklen(drbg) + /* temp */
+ drbg_statelen(drbg) + /* df_data */
+ drbg_blocklen(drbg) + /* pad */
+ drbg_blocklen(drbg) + /* iv */
+ drbg_statelen(drbg); /* temp */
+ else
+ sb_size = drbg_statelen(drbg) + drbg_blocklen(drbg);
+
+ if (0 < sb_size) {
+ drbg->scratchpad = kzalloc(sb_size, GFP_KERNEL);
+ if (!drbg->scratchpad)
+ goto err;
+ }
+ spin_lock_init(&drbg->drbg_lock);
+ return 0;
+
+err:
+ drbg_dealloc_state(drbg);
+ return ret;
+}
+
+/*
+ * Strategy to avoid holding long term locks: generate a shadow copy of DRBG
+ * and perform all operations on this shadow copy. After finishing, restore
+ * the updated state of the shadow copy into original drbg state. This way,
+ * only the read and write operations of the original drbg state must be
+ * locked
+ */
+static inline void drbg_copy_drbg(struct drbg_state *src,
+ struct drbg_state *dst)
+{
+ if (!src || !dst)
+ return;
+ memcpy(dst->V, src->V, drbg_statelen(src));
+ memcpy(dst->C, src->C, drbg_statelen(src));
+ dst->reseed_ctr = src->reseed_ctr;
+ dst->seeded = src->seeded;
+ dst->pr = src->pr;
+#ifdef CONFIG_CRYPTO_FIPS
+ dst->fips_primed = src->fips_primed;
+ memcpy(dst->prev, src->prev, drbg_blocklen(src));
+#endif
+ /*
+ * Not copied:
+ * scratchpad is initialized drbg_alloc_state;
+ * priv_data is initialized with call to crypto_init;
+ * d_ops and core are set outside, as these parameters are const;
+ * test_data is set outside to prevent it being copied back.
+ */
+}
+
+static int drbg_make_shadow(struct drbg_state *drbg, struct drbg_state **shadow)
+{
+ int ret = -ENOMEM;
+ struct drbg_state *tmp = NULL;
+
+ if (!drbg || !drbg->core || !drbg->V || !drbg->C) {
+ pr_devel("DRBG: attempt to generate shadow copy for "
+ "uninitialized DRBG state rejected\n");
+ return -EINVAL;
+ }
+ /* HMAC does not have a scratchpad */
+ if (!(drbg->core->flags & DRBG_HMAC) && NULL == drbg->scratchpad)
+ return -EINVAL;
+
+ tmp = kzalloc(sizeof(struct drbg_state), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ /* read-only data as they are defined as const, no lock needed */
+ tmp->core = drbg->core;
+ tmp->d_ops = drbg->d_ops;
+
+ ret = drbg_alloc_state(tmp);
+ if (ret)
+ goto err;
+
+ spin_lock_bh(&drbg->drbg_lock);
+ drbg_copy_drbg(drbg, tmp);
+ /* only make a link to the test buffer, as we only read that data */
+ tmp->test_data = drbg->test_data;
+ spin_unlock_bh(&drbg->drbg_lock);
+ *shadow = tmp;
+ return 0;
+
+err:
+ if (tmp)
+ kzfree(tmp);
+ return ret;
+}
+
+static void drbg_restore_shadow(struct drbg_state *drbg,
+ struct drbg_state **shadow)
+{
+ struct drbg_state *tmp = *shadow;
+
+ spin_lock_bh(&drbg->drbg_lock);
+ drbg_copy_drbg(tmp, drbg);
+ spin_unlock_bh(&drbg->drbg_lock);
+ drbg_dealloc_state(tmp);
+ kzfree(tmp);
+ *shadow = NULL;
+}
+
+/*************************************************************************
+ * DRBG interface functions
+ *************************************************************************/
+
+/*
+ * DRBG generate function as required by SP800-90A - this function
+ * generates random numbers
+ *
+ * @drbg DRBG state handle
+ * @buf Buffer where to store the random numbers -- the buffer must already
+ * be pre-allocated by caller
+ * @buflen Length of output buffer - this value defines the number of random
+ * bytes pulled from DRBG
+ * @addtl Additional input that is mixed into state, may be NULL -- note
+ * the entropy is pulled by the DRBG internally unconditionally
+ * as defined in SP800-90A. The additional input is mixed into
+ * the state in addition to the pulled entropy.
+ *
+ * return: generated number of bytes
+ */
+static int drbg_generate(struct drbg_state *drbg,
+ unsigned char *buf, unsigned int buflen,
+ struct drbg_string *addtl)
+{
+ int len = 0;
+ struct drbg_state *shadow = NULL;
+
+ if (0 == buflen || !buf) {
+ pr_devel("DRBG: no output buffer provided\n");
+ return -EINVAL;
+ }
+ if (addtl && NULL == addtl->buf && 0 < addtl->len) {
+ pr_devel("DRBG: wrong format of additional information\n");
+ return -EINVAL;
+ }
+
+ len = drbg_make_shadow(drbg, &shadow);
+ if (len) {
+ pr_devel("DRBG: shadow copy cannot be generated\n");
+ return len;
+ }
+
+ /* 9.3.1 step 2 */
+ len = -EINVAL;
+ if (buflen > (drbg_max_request_bytes(shadow))) {
+ pr_devel("DRBG: requested random numbers too large %u\n",
+ buflen);
+ goto err;
+ }
+
+ /* 9.3.1 step 3 is implicit with the chosen DRBG */
+
+ /* 9.3.1 step 4 */
+ if (addtl && addtl->len > (drbg_max_addtl(shadow))) {
+ pr_devel("DRBG: additional information string too long %zu\n",
+ addtl->len);
+ goto err;
+ }
+ /* 9.3.1 step 5 is implicit with the chosen DRBG */
+
+ /*
+ * 9.3.1 step 6 and 9 supplemented by 9.3.2 step c is implemented
+ * here. The spec is a bit convoluted here, we make it simpler.
+ */
+ if ((drbg_max_requests(shadow)) < shadow->reseed_ctr)
+ shadow->seeded = false;
+
+ /* allocate cipher handle */
+ if (shadow->d_ops->crypto_init) {
+ len = shadow->d_ops->crypto_init(shadow);
+ if (len)
+ goto err;
+ }
+
+ if (shadow->pr || !shadow->seeded) {
+ pr_devel("DRBG: reseeding before generation (prediction "
+ "resistance: %s, state %s)\n",
+ drbg->pr ? "true" : "false",
+ drbg->seeded ? "seeded" : "unseeded");
+ /* 9.3.1 steps 7.1 through 7.3 */
+ len = drbg_seed(shadow, addtl, true);
+ if (len)
+ goto err;
+ /* 9.3.1 step 7.4 */
+ addtl = NULL;
+ }
+ /* 9.3.1 step 8 and 10 */
+ len = shadow->d_ops->generate(shadow, buf, buflen, addtl);
+
+ /* 10.1.1.4 step 6, 10.1.2.5 step 7, 10.2.1.5.2 step 7 */
+ shadow->reseed_ctr++;
+ if (0 >= len)
+ goto err;
+
+ /*
+ * Section 11.3.3 requires to re-perform self tests after some
+ * generated random numbers. The chosen value after which self
+ * test is performed is arbitrary, but it should be reasonable.
+ * However, we do not perform the self tests because of the following
+ * reasons: it is mathematically impossible that the initial self tests
+ * were successfully and the following are not. If the initial would
+ * pass and the following would not, the kernel integrity is violated.
+ * In this case, the entire kernel operation is questionable and it
+ * is unlikely that the integrity violation only affects to the
+ * correct operation of the DRBG.
+ *
+ * Albeit the following code is commented out, it is provided in
+ * case somebody has a need to implement the test of 11.3.3.
+ */
+#if 0
+ if (shadow->reseed_ctr && !(shadow->reseed_ctr % 4096)) {
+ int err = 0;
+ pr_devel("DRBG: start to perform self test\n");
+ if (drbg->core->flags & DRBG_HMAC)
+ err = alg_test("drbg_pr_hmac_sha256",
+ "drbg_pr_hmac_sha256", 0, 0);
+ else if (drbg->core->flags & DRBG_CTR)
+ err = alg_test("drbg_pr_ctr_aes128",
+ "drbg_pr_ctr_aes128", 0, 0);
+ else
+ err = alg_test("drbg_pr_sha256",
+ "drbg_pr_sha256", 0, 0);
+ if (err) {
+ pr_err("DRBG: periodical self test failed\n");
+ /*
+ * uninstantiate implies that from now on, only errors
+ * are returned when reusing this DRBG cipher handle
+ */
+ drbg_uninstantiate(drbg);
+ drbg_dealloc_state(shadow);
+ kzfree(shadow);
+ return 0;
+ } else {
+ pr_devel("DRBG: self test successful\n");
+ }
+ }
+#endif
+
+err:
+ if (shadow->d_ops->crypto_fini)
+ shadow->d_ops->crypto_fini(shadow);
+ drbg_restore_shadow(drbg, &shadow);
+ return len;
+}
+
+/*
+ * Wrapper around drbg_generate which can pull arbitrary long strings
+ * from the DRBG without hitting the maximum request limitation.
+ *
+ * Parameters: see drbg_generate
+ * Return codes: see drbg_generate -- if one drbg_generate request fails,
+ * the entire drbg_generate_long request fails
+ */
+static int drbg_generate_long(struct drbg_state *drbg,
+ unsigned char *buf, unsigned int buflen,
+ struct drbg_string *addtl)
+{
+ int len = 0;
+ unsigned int slice = 0;
+ do {
+ int tmplen = 0;
+ unsigned int chunk = 0;
+ slice = ((buflen - len) / drbg_max_request_bytes(drbg));
+ chunk = slice ? drbg_max_request_bytes(drbg) : (buflen - len);
+ tmplen = drbg_generate(drbg, buf + len, chunk, addtl);
+ if (0 >= tmplen)
+ return tmplen;
+ len += tmplen;
+ } while (slice > 0);
+ return len;
+}
+
+/*
+ * DRBG instantiation function as required by SP800-90A - this function
+ * sets up the DRBG handle, performs the initial seeding and all sanity
+ * checks required by SP800-90A
+ *
+ * @drbg memory of state -- if NULL, new memory is allocated
+ * @pers Personalization string that is mixed into state, may be NULL -- note
+ * the entropy is pulled by the DRBG internally unconditionally
+ * as defined in SP800-90A. The additional input is mixed into
+ * the state in addition to the pulled entropy.
+ * @coreref reference to core
+ * @pr prediction resistance enabled
+ *
+ * return
+ * 0 on success
+ * error value otherwise
+ */
+static int drbg_instantiate(struct drbg_state *drbg, struct drbg_string *pers,
+ int coreref, bool pr)
+{
+ int ret = -ENOMEM;
+
+ pr_devel("DRBG: Initializing DRBG core %d with prediction resistance "
+ "%s\n", coreref, pr ? "enabled" : "disabled");
+ drbg->core = &drbg_cores[coreref];
+ drbg->pr = pr;
+ drbg->seeded = false;
+ switch (drbg->core->flags & DRBG_TYPE_MASK) {
+#ifdef CONFIG_CRYPTO_DRBG_HMAC
+ case DRBG_HMAC:
+ drbg->d_ops = &drbg_hmac_ops;
+ break;
+#endif /* CONFIG_CRYPTO_DRBG_HMAC */
+#ifdef CONFIG_CRYPTO_DRBG_HASH
+ case DRBG_HASH:
+ drbg->d_ops = &drbg_hash_ops;
+ break;
+#endif /* CONFIG_CRYPTO_DRBG_HASH */
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+ case DRBG_CTR:
+ drbg->d_ops = &drbg_ctr_ops;
+ break;
+#endif /* CONFIG_CRYPTO_DRBG_CTR */
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ /* 9.1 step 1 is implicit with the selected DRBG type */
+
+ /*
+ * 9.1 step 2 is implicit as caller can select prediction resistance
+ * and the flag is copied into drbg->flags --
+ * all DRBG types support prediction resistance
+ */
+
+ /* 9.1 step 4 is implicit in drbg_sec_strength */
+
+ ret = drbg_alloc_state(drbg);
+ if (ret)
+ return ret;
+
+ ret = -EFAULT;
+ if (drbg->d_ops->crypto_init && drbg->d_ops->crypto_init(drbg))
+ goto err;
+ ret = drbg_seed(drbg, pers, false);
+ if (drbg->d_ops->crypto_fini)
+ drbg->d_ops->crypto_fini(drbg);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ drbg_dealloc_state(drbg);
+ return ret;
+}
+
+/*
+ * DRBG uninstantiate function as required by SP800-90A - this function
+ * frees all buffers and the DRBG handle
+ *
+ * @drbg DRBG state handle
+ *
+ * return
+ * 0 on success
+ */
+static int drbg_uninstantiate(struct drbg_state *drbg)
+{
+ spin_lock_bh(&drbg->drbg_lock);
+ drbg_dealloc_state(drbg);
+ /* no scrubbing of test_data -- this shall survive an uninstantiate */
+ spin_unlock_bh(&drbg->drbg_lock);
+ return 0;
+}
+
+/*
+ * Helper function for setting the test data in the DRBG
+ *
+ * @drbg DRBG state handle
+ * @test_data test data to sets
+ */
+static inline void drbg_set_testdata(struct drbg_state *drbg,
+ struct drbg_test_data *test_data)
+{
+ if (!test_data || !test_data->testentropy)
+ return;
+ spin_lock_bh(&drbg->drbg_lock);
+ drbg->test_data = test_data;
+ spin_unlock_bh(&drbg->drbg_lock);
+}
+
+/***************************************************************
+ * Kernel crypto APi cipher invocations requested by DRBG
+ ***************************************************************/
+
+#if defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_HMAC)
+struct sdesc {
+ struct shash_desc shash;
+ char ctx[];
+};
+
+static int drbg_init_hash_kernel(struct drbg_state *drbg)
+{
+ struct sdesc *sdesc;
+ struct crypto_shash *tfm;
+
+ tfm = crypto_alloc_shash(drbg->core->backend_cra_name, 0, 0);
+ if (IS_ERR(tfm)) {
+ pr_info("DRBG: could not allocate digest TFM handle\n");
+ return PTR_ERR(tfm);
+ }
+ BUG_ON(drbg_blocklen(drbg) != crypto_shash_digestsize(tfm));
+ sdesc = kzalloc(sizeof(struct shash_desc) + crypto_shash_descsize(tfm),
+ GFP_KERNEL);
+ if (!sdesc) {
+ crypto_free_shash(tfm);
+ return -ENOMEM;
+ }
+
+ sdesc->shash.tfm = tfm;
+ sdesc->shash.flags = 0;
+ drbg->priv_data = sdesc;
+ return 0;
+}
+
+static int drbg_fini_hash_kernel(struct drbg_state *drbg)
+{
+ struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+ if (sdesc) {
+ crypto_free_shash(sdesc->shash.tfm);
+ kzfree(sdesc);
+ }
+ drbg->priv_data = NULL;
+ return 0;
+}
+
+static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
+ unsigned char *outval, const struct drbg_string *in)
+{
+ struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+
+ if (key)
+ crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
+ crypto_shash_init(&sdesc->shash);
+ for (; NULL != in; in = in->next)
+ crypto_shash_update(&sdesc->shash, in->buf, in->len);
+ return crypto_shash_final(&sdesc->shash, outval);
+}
+#endif /* (CONFIG_CRYPTO_DRBG_HASH || CONFIG_CRYPTO_DRBG_HMAC) */
+
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+static int drbg_init_sym_kernel(struct drbg_state *drbg)
+{
+ int ret = 0;
+ struct crypto_blkcipher *tfm;
+
+ tfm = crypto_alloc_blkcipher(drbg->core->backend_cra_name, 0, 0);
+ if (IS_ERR(tfm)) {
+ pr_info("DRBG: could not allocate cipher TFM handle\n");
+ return PTR_ERR(tfm);
+ }
+ BUG_ON(drbg_blocklen(drbg) != crypto_blkcipher_blocksize(tfm));
+ drbg->priv_data = tfm;
+ return ret;
+}
+
+static int drbg_fini_sym_kernel(struct drbg_state *drbg)
+{
+ struct crypto_blkcipher *tfm =
+ (struct crypto_blkcipher *)drbg->priv_data;
+ if (tfm)
+ crypto_free_blkcipher(tfm);
+ drbg->priv_data = NULL;
+ return 0;
+}
+
+static int drbg_kcapi_sym(struct drbg_state *drbg, const unsigned char *key,
+ unsigned char *outval, const struct drbg_string *in)
+{
+ int ret = 0;
+ struct scatterlist sg_in, sg_out;
+ struct blkcipher_desc desc;
+ struct crypto_blkcipher *tfm =
+ (struct crypto_blkcipher *)drbg->priv_data;
+
+ desc.tfm = tfm;
+ desc.flags = 0;
+ crypto_blkcipher_setkey(tfm, key, (drbg_keylen(drbg)));
+ /* in is only component in *in */
+ sg_init_one(&sg_in, in->buf, in->len);
+ sg_init_one(&sg_out, outval, drbg_blocklen(drbg));
+ ret = crypto_blkcipher_encrypt(&desc, &sg_out, &sg_in, in->len);
+
+ return ret;
+}
+#endif /* CONFIG_CRYPTO_DRBG_CTR */
+
+/***************************************************************
+ * Kernel crypto API interface to register DRBG
+ ***************************************************************/
+
+#ifdef CONFIG_CRYPTO_DRBG_HMAC
+static char *stdrng = "drbg_nopr_hmac_sha256";
+#elif CONFIG_CRYPTO_DRBG_HASH
+static char *stdrng = "drbg_nopr_sha256";
+#else
+static char *stdrng = "drbg_nopr_ctr_aes256";
+#endif
+
+/*
+ * Look up the DRBG flags by given kernel crypto API cra_name
+ * The code uses the drbg_cores definition to do this
+ *
+ * @cra_name kernel crypto API cra_name
+ * @coreref reference to integer which is filled with the pointer to
+ * the applicable core
+ * @pr reference for setting prediction resistance
+ *
+ * return: flags
+ */
+static inline void drbg_convert_tfm_core(const char *cra_name,
+ int *coreref, bool *pr)
+{
+ int i = 0;
+ size_t start = 0;
+ int len = 0;
+ const char *name = cra_name;
+
+ if (!memcmp(cra_name, "stdrng", 6))
+ name = stdrng;
+
+ *pr = true;
+ /* disassemble the names */
+ if (!memcmp(name, "drbg_nopr_", 10)) {
+ start = 10;
+ *pr = false;
+ } else if (!memcmp(name, "drbg_pr_", 8)) {
+ start = 8;
+ } else {
+ return;
+ }
+
+ /* remove the first part */
+ len = strlen(name) - start;
+ for (i = 0; ARRAY_SIZE(drbg_cores) > i; i++) {
+ if (!memcmp(name + start, drbg_cores[i].cra_name, len)) {
+ *coreref = i;
+ return;
+ }
+ }
+}
+
+static int drbg_kcapi_init(struct crypto_tfm *tfm)
+{
+ struct drbg_state *drbg = crypto_tfm_ctx(tfm);
+ bool pr = false;
+ int coreref = 0;
+
+ drbg_convert_tfm_core(crypto_tfm_alg_name(tfm), &coreref, &pr);
+ /*
+ * when personalization string is needed, the caller must call reset
+ * and provide the personalization string as seed information
+ */
+ return drbg_instantiate(drbg, NULL, coreref, pr);
+}
+
+static void drbg_kcapi_cleanup(struct crypto_tfm *tfm)
+{
+ drbg_uninstantiate(crypto_tfm_ctx(tfm));
+}
+
+/*
+ * Generate random numbers invoked by the kernel crypto API:
+ * The API of the kernel crypto API is extended as follows:
+ *
+ * If dlen is larger than zero, rdata is interpreted as the output buffer
+ * where random data is to be stored.
+ *
+ * If dlen is zero, rdata is interpreted as a pointer to a struct drbg_gen
+ * which holds the additional information string that is used for the
+ * DRBG generation process. The output buffer that is to be used to store
+ * data is also pointed to by struct drbg_gen.
+ */
+static int drbg_kcapi_random(struct crypto_rng *tfm, u8 *rdata,
+ unsigned int dlen)
+{
+ struct drbg_state *drbg = crypto_rng_ctx(tfm);
+ if (0 < dlen) {
+ return drbg_generate_long(drbg, rdata, dlen, NULL);
+ } else {
+ struct drbg_gen *data = (struct drbg_gen *)rdata;
+ /* catch NULL pointer */
+ if (!data)
+ return 0;
+ drbg_set_testdata(drbg, data->test_data);
+ return drbg_generate_long(drbg, data->outbuf, data->outlen,
+ data->addtl);
+ }
+}
+
+/*
+ * Reset the DRBG invoked by the kernel crypto API
+ * The reset implies a full re-initialization of the DRBG. Similar to the
+ * generate function of drbg_kcapi_random, this function extends the
+ * kernel crypto API interface with struct drbg_gen
+ */
+static int drbg_kcapi_reset(struct crypto_rng *tfm, u8 *seed, unsigned int slen)
+{
+ struct drbg_state *drbg = crypto_rng_ctx(tfm);
+ struct crypto_tfm *tfm_base = crypto_rng_tfm(tfm);
+ bool pr = false;
+ struct drbg_string seed_string;
+ int coreref = 0;
+
+ drbg_uninstantiate(drbg);
+ drbg_convert_tfm_core(crypto_tfm_alg_name(tfm_base), &coreref, &pr);
+ if (0 < slen) {
+ drbg_string_fill(&seed_string, seed, slen);
+ return drbg_instantiate(drbg, &seed_string, coreref, pr);
+ } else {
+ struct drbg_gen *data = (struct drbg_gen *)seed;
+ /* allow invocation of API call with NULL, 0 */
+ if (!data)
+ return drbg_instantiate(drbg, NULL, coreref, pr);
+ drbg_set_testdata(drbg, data->test_data);
+ return drbg_instantiate(drbg, data->addtl, coreref, pr);
+ }
+}
+
+/***************************************************************
+ * Kernel module: code to load the module
+ ***************************************************************/
+
+/*
+ * Tests as defined in 11.3.2 in addition to the cipher tests: testing
+ * of the error handling.
+ *
+ * Note: testing of failing seed source as defined in 11.3.2 is not applicable
+ * as seed source of get_random_bytes does not fail.
+ *
+ * Note 2: There is no sensible way of testing the reseed counter
+ * enforcement, so skip it.
+ */
+static inline int __init drbg_healthcheck_sanity(void)
+{
+#ifdef CONFIG_CRYPTO_FIPS
+ int len = 0;
+#define OUTBUFLEN 16
+ unsigned char buf[OUTBUFLEN];
+ struct drbg_state *drbg = NULL;
+ int ret = -EFAULT;
+ int rc = -EFAULT;
+ bool pr = false;
+ int coreref = 0;
+ struct drbg_string addtl;
+ size_t max_addtllen, max_request_bytes;
+
+ /* only perform test in FIPS mode */
+ if (!fips_enabled)
+ return 0;
+
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+ drbg_convert_tfm_core("drbg_nopr_ctr_aes128", &coreref, &pr);
+#elif CONFIG_CRYPTO_DRBG_HASH
+ drbg_convert_tfm_core("drbg_nopr_sha256", &coreref, &pr);
+#else
+ drbg_convert_tfm_core("drbg_nopr_hmac_sha256", &coreref, &pr);
+#endif
+
+ drbg = kzalloc(sizeof(struct drbg_state), GFP_KERNEL);
+ if (!drbg)
+ return -ENOMEM;
+
+ /*
+ * if the following tests fail, it is likely that there is a buffer
+ * overflow as buf is much smaller than the requested or provided
+ * string lengths -- in case the error handling does not succeed
+ * we may get an OOPS. And we want to get an OOPS as this is a
+ * grave bug.
+ */
+
+ /* get a valid instance of DRBG for following tests */
+ ret = drbg_instantiate(drbg, NULL, coreref, pr);
+ if (ret) {
+ rc = ret;
+ goto outbuf;
+ }
+ max_addtllen = drbg_max_addtl(drbg);
+ max_request_bytes = drbg_max_request_bytes(drbg);
+ drbg_string_fill(&addtl, buf, max_addtllen + 1);
+ /* overflow addtllen with additonal info string */
+ len = drbg_generate(drbg, buf, OUTBUFLEN, &addtl);
+ BUG_ON(0 < len);
+ /* overflow max_bits */
+ len = drbg_generate(drbg, buf, (max_request_bytes + 1), NULL);
+ BUG_ON(0 < len);
+ drbg_uninstantiate(drbg);
+
+ /* overflow max addtllen with personalization string */
+ ret = drbg_instantiate(drbg, &addtl, coreref, pr);
+ BUG_ON(0 == ret);
+ /* test uninstantated DRBG */
+ len = drbg_generate(drbg, buf, (max_request_bytes + 1), NULL);
+ BUG_ON(0 < len);
+ /* all tests passed */
+ rc = 0;
+
+ pr_devel("DRBG: Sanity tests for failure code paths successfully "
+ "completed\n");
+
+ drbg_uninstantiate(drbg);
+outbuf:
+ kzfree(drbg);
+ return rc;
+#else /* CONFIG_CRYPTO_FIPS */
+ return 0;
+#endif /* CONFIG_CRYPTO_FIPS */
+}
+
+static struct crypto_alg drbg_algs[22];
+
+/*
+ * Fill the array drbg_algs used to register the different DRBGs
+ * with the kernel crypto API. To fill the array, the information
+ * from drbg_cores[] is used.
+ */
+static inline void __init drbg_fill_array(struct crypto_alg *alg,
+ const struct drbg_core *core, int pr)
+{
+ int pos = 0;
+
+ memset(alg, 0, sizeof(struct crypto_alg));
+ if (pr) {
+ memcpy(alg->cra_name, "drbg_pr_", 8);
+ memcpy(alg->cra_driver_name, "drbg_pr_", 8);
+ pos = 8;
+ } else {
+ memcpy(alg->cra_name, "drbg_nopr_", 10);
+ memcpy(alg->cra_driver_name, "drbg_nopr_", 10);
+ pos = 10;
+ }
+
+ memcpy(alg->cra_name + pos, core->cra_name, strlen(core->cra_name));
+ memcpy(alg->cra_driver_name+pos, core->cra_name,
+ strlen(core->cra_name));
+
+ if (!strncmp(alg->cra_name, stdrng, strlen(alg->cra_name))) {
+ memset(alg->cra_name, 0, CRYPTO_MAX_ALG_NAME);
+ memcpy(alg->cra_name, "stdrng", 6);
+ /*
+ * If FIPS mode enabled, the selected DRBG shall have the
+ * highest cra_priority over other stdrng instances to ensure
+ * it is selected.
+ */
+ if (fips_enabled)
+ alg->cra_priority = 300;
+ else
+ alg->cra_priority = 100;
+ } else {
+ alg->cra_priority = 100;
+ }
+ alg->cra_flags = CRYPTO_ALG_TYPE_RNG;
+ alg->cra_ctxsize = sizeof(struct drbg_state);
+ alg->cra_type = &crypto_rng_type;
+ alg->cra_module = THIS_MODULE;
+ alg->cra_init = drbg_kcapi_init;
+ alg->cra_exit = drbg_kcapi_cleanup;
+ alg->cra_u.rng.rng_make_random = drbg_kcapi_random;
+ alg->cra_u.rng.rng_reset = drbg_kcapi_reset;
+ alg->cra_u.rng.seedsize = 0;
+}
+
+static int __init drbg_init(void)
+{
+ unsigned int i = 0; /* pointer to drbg_algs */
+ unsigned int j = 0; /* pointer to drbg_cores */
+ int ret = -EFAULT;
+
+ ret = drbg_healthcheck_sanity();
+ if (ret)
+ return ret;
+
+ if (ARRAY_SIZE(drbg_cores) * 2 > ARRAY_SIZE(drbg_algs)) {
+ pr_info("DRBG: Cannot register all DRBG types"
+ "(slots needed: %lu, slots available: %lu)\n",
+ ARRAY_SIZE(drbg_cores) * 2, ARRAY_SIZE(drbg_algs));
+ return ret;
+ }
+
+ /*
+ * each DRBG definition can be used with PR and without PR, thus
+ * we instantiate each DRBG in drbg_cores[] twice
+ */
+ for (j = 0; ARRAY_SIZE(drbg_cores) > j; j++) {
+ drbg_fill_array(&drbg_algs[i], &drbg_cores[j], 1);
+ i++;
+ drbg_fill_array(&drbg_algs[i], &drbg_cores[j], 0);
+ i++;
+ }
+ return crypto_register_algs(drbg_algs, (ARRAY_SIZE(drbg_cores) * 2));
+}
+
+void __exit drbg_exit(void)
+{
+ crypto_unregister_algs(drbg_algs, (ARRAY_SIZE(drbg_cores) * 2));
+}
+
+module_init(drbg_init);
+module_exit(drbg_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
+MODULE_DESCRIPTION("NIST SP800-90A Deterministic Random Bit Generator (DRBG) using following cores:"
+#ifdef CONFIG_CRYPTO_DRBG_HMAC
+"HMAC "
+#endif
+#ifdef CONFIG_CRYPTO_DRBG_HASH
+"Hash "
+#endif
+#ifdef CONFIG_CRYPTO_DRBG_CTR
+"CTR"
+#endif
+);
+module_param(stdrng, charp, 0444);
+MODULE_PARM_DESC(stdrng, "Kernel crypto API name of DRBG marked as stdrng");
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 2/7] header file for DRBG
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
2014-05-26 11:26 ` [PATCH v8 1/7] " Stephan Mueller
@ 2014-05-26 11:27 ` Stephan Mueller
2014-05-26 11:27 ` [PATCH v8 3/7] DRBG kernel configuration options Stephan Mueller
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:27 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
The header file includes the definition of:
* DRBG data structures with
- struct drbg_state as main structure
- struct drbg_core referencing the backend ciphers
- struct drbg_state_ops callbach handlers for specific code
supporting the Hash, HMAC, CTR DRBG implementations
- struct drbg_conc defining a linked list for input data
- struct drbg_test_data holding the test "entropy" data for CAVS
testing and testmgr.c
- struct drbg_gen allowing test data, additional information
string and personalization string data to be funneled through
the kernel crypto API -- the DRBG requires additional
parameters when invoking the reset and random number
generation requests than intended by the kernel crypto API
* wrapper function to the kernel crypto API functions using struct
drbg_gen to pass through all data needed for DRBG
* wrapper functions to kernel crypto API functions usable for testing
code to inject test_data into the DRBG as needed by CAVS testing and
testmgr.c.
* DRBG flags required for the operation of the DRBG and for selecting
the particular DRBG type and backend cipher
* getter functions for data from struct drbg_core
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
include/crypto/drbg.h | 289 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 289 insertions(+)
create mode 100644 include/crypto/drbg.h
diff --git a/include/crypto/drbg.h b/include/crypto/drbg.h
new file mode 100644
index 0000000..b507c5b6
--- /dev/null
+++ b/include/crypto/drbg.h
@@ -0,0 +1,289 @@
+/*
+ * DRBG based on NIST SP800-90A
+ *
+ * Copyright Stephan Mueller <smueller@chronox.de>, 2014
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU General Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+#ifndef _DRBG_H
+#define _DRBG_H
+
+
+#include <linux/random.h>
+#include <linux/scatterlist.h>
+#include <crypto/hash.h>
+#include <linux/module.h>
+#include <linux/crypto.h>
+#include <linux/slab.h>
+#include <crypto/internal/rng.h>
+#include <crypto/rng.h>
+#include <linux/fips.h>
+#include <linux/spinlock.h>
+
+/*
+ * Concatenation Helper and string operation helper
+ *
+ * SP800-90A requires the concatenation of different data. To avoid copying
+ * buffers around or allocate additional memory, the following data structure
+ * is used to point to the original memory with its size. In addition, it
+ * is used to build a linked list. The linked list defines the concatenation
+ * of individual buffers. The order of memory block referenced in that
+ * linked list determines the order of concatenation.
+ */
+struct drbg_string {
+ const unsigned char *buf;
+ size_t len;
+ struct drbg_string *next;
+};
+
+static inline void drbg_string_fill(struct drbg_string *string,
+ const unsigned char *buf, size_t len)
+{
+ string->buf = buf;
+ string->len = len;
+ string->next = NULL;
+}
+
+struct drbg_state;
+typedef uint32_t drbg_flag_t;
+
+struct drbg_core {
+ drbg_flag_t flags; /* flags for the cipher */
+ __u8 statelen; /* maximum state length */
+ /*
+ * maximum length of personalization string or additional input
+ * string -- exponent for base 2
+ */
+ __u8 max_addtllen;
+ /* maximum bits per RNG request -- exponent for base 2*/
+ __u8 max_bits;
+ /* maximum number of requests -- exponent for base 2 */
+ __u8 max_req;
+ __u8 blocklen_bytes; /* block size of output in bytes */
+ char cra_name[CRYPTO_MAX_ALG_NAME]; /* mapping to kernel crypto API */
+ /* kernel crypto API backend cipher name */
+ char backend_cra_name[CRYPTO_MAX_ALG_NAME];
+};
+
+struct drbg_state_ops {
+ int (*update)(struct drbg_state *drbg, struct drbg_string *seed,
+ int reseed);
+ int (*generate)(struct drbg_state *drbg,
+ unsigned char *buf, unsigned int buflen,
+ struct drbg_string *addtl);
+ int (*crypto_init)(struct drbg_state *drbg);
+ int (*crypto_fini)(struct drbg_state *drbg);
+
+};
+
+struct drbg_test_data {
+ struct drbg_string *testentropy; /* TEST PARAMETER: test entropy */
+};
+
+struct drbg_state {
+ spinlock_t drbg_lock; /* lock around DRBG */
+ unsigned char *V; /* internal state 10.1.1.1 1a) */
+ /* hash: static value 10.1.1.1 1b) hmac / ctr: key */
+ unsigned char *C;
+ /* Number of RNG requests since last reseed -- 10.1.1.1 1c) */
+ size_t reseed_ctr;
+ /* some memory the DRBG can use for its operation */
+ unsigned char *scratchpad;
+ void *priv_data; /* Cipher handle */
+ bool seeded; /* DRBG fully seeded? */
+ bool pr; /* Prediction resistance enabled? */
+#ifdef CONFIG_CRYPTO_FIPS
+ bool fips_primed; /* Continuous test primed? */
+ unsigned char *prev; /* FIPS 140-2 continuous test value */
+#endif
+ const struct drbg_state_ops *d_ops;
+ const struct drbg_core *core;
+ struct drbg_test_data *test_data;
+};
+
+static inline __u8 drbg_statelen(struct drbg_state *drbg)
+{
+ if (drbg && drbg->core)
+ return drbg->core->statelen;
+ return 0;
+}
+
+static inline __u8 drbg_blocklen(struct drbg_state *drbg)
+{
+ if (drbg && drbg->core)
+ return drbg->core->blocklen_bytes;
+ return 0;
+}
+
+static inline __u8 drbg_keylen(struct drbg_state *drbg)
+{
+ if (drbg && drbg->core)
+ return (drbg->core->statelen - drbg->core->blocklen_bytes);
+ return 0;
+}
+
+static inline size_t drbg_max_request_bytes(struct drbg_state *drbg)
+{
+ /* max_bits is in bits, but buflen is in bytes */
+ return (1 << (drbg->core->max_bits - 3));
+}
+
+static inline size_t drbg_max_addtl(struct drbg_state *drbg)
+{
+ return (1UL<<(drbg->core->max_addtllen));
+}
+
+static inline size_t drbg_max_requests(struct drbg_state *drbg)
+{
+ return (1UL<<(drbg->core->max_req));
+}
+
+/*
+ * kernel crypto API input data structure for DRBG generate in case dlen
+ * is set to 0
+ */
+struct drbg_gen {
+ unsigned char *outbuf; /* output buffer for random numbers */
+ unsigned int outlen; /* size of output buffer */
+ struct drbg_string *addtl; /* additional information string */
+ struct drbg_test_data *test_data; /* test data */
+};
+
+/*
+ * This is a wrapper to the kernel crypto API function of
+ * crypto_rng_get_bytes() to allow the caller to provide additional data.
+ *
+ * @drng DRBG handle -- see crypto_rng_get_bytes
+ * @outbuf output buffer -- see crypto_rng_get_bytes
+ * @outlen length of output buffer -- see crypto_rng_get_bytes
+ * @addtl_input additional information string input buffer
+ * @addtllen length of additional information string buffer
+ *
+ * return
+ * see crypto_rng_get_bytes
+ */
+static inline int crypto_drbg_get_bytes_addtl(struct crypto_rng *drng,
+ unsigned char *outbuf, unsigned int outlen,
+ struct drbg_string *addtl)
+{
+ int ret;
+ struct drbg_gen genbuf;
+ genbuf.outbuf = outbuf;
+ genbuf.outlen = outlen;
+ genbuf.addtl = addtl;
+ genbuf.test_data = NULL;
+ ret = crypto_rng_get_bytes(drng, (u8 *)&genbuf, 0);
+ return ret;
+}
+
+/*
+ * TEST code
+ *
+ * This is a wrapper to the kernel crypto API function of
+ * crypto_rng_get_bytes() to allow the caller to provide additional data and
+ * allow furnishing of test_data
+ *
+ * @drng DRBG handle -- see crypto_rng_get_bytes
+ * @outbuf output buffer -- see crypto_rng_get_bytes
+ * @outlen length of output buffer -- see crypto_rng_get_bytes
+ * @addtl_input additional information string input buffer
+ * @addtllen length of additional information string buffer
+ * @test_data filled test data
+ *
+ * return
+ * see crypto_rng_get_bytes
+ */
+static inline int crypto_drbg_get_bytes_addtl_test(struct crypto_rng *drng,
+ unsigned char *outbuf, unsigned int outlen,
+ struct drbg_string *addtl,
+ struct drbg_test_data *test_data)
+{
+ int ret;
+ struct drbg_gen genbuf;
+ genbuf.outbuf = outbuf;
+ genbuf.outlen = outlen;
+ genbuf.addtl = addtl;
+ genbuf.test_data = test_data;
+ ret = crypto_rng_get_bytes(drng, (u8 *)&genbuf, 0);
+ return ret;
+}
+
+/*
+ * TEST code
+ *
+ * This is a wrapper to the kernel crypto API function of
+ * crypto_rng_reset() to allow the caller to provide test_data
+ *
+ * @drng DRBG handle -- see crypto_rng_reset
+ * @pers personalization string input buffer
+ * @perslen length of additional information string buffer
+ * @test_data filled test data
+ *
+ * return
+ * see crypto_rng_reset
+ */
+static inline int crypto_drbg_reset_test(struct crypto_rng *drng,
+ struct drbg_string *pers,
+ struct drbg_test_data *test_data)
+{
+ int ret;
+ struct drbg_gen genbuf;
+ genbuf.outbuf = NULL;
+ genbuf.outlen = 0;
+ genbuf.addtl = pers;
+ genbuf.test_data = test_data;
+ ret = crypto_rng_reset(drng, (u8 *)&genbuf, 0);
+ return ret;
+}
+
+/* DRBG type flags */
+#define DRBG_CTR ((drbg_flag_t)1<<0)
+#define DRBG_HMAC ((drbg_flag_t)1<<1)
+#define DRBG_HASH ((drbg_flag_t)1<<2)
+#define DRBG_TYPE_MASK (DRBG_CTR | DRBG_HMAC | DRBG_HASH)
+/* DRBG strength flags */
+#define DRBG_STRENGTH128 ((drbg_flag_t)1<<3)
+#define DRBG_STRENGTH192 ((drbg_flag_t)1<<4)
+#define DRBG_STRENGTH256 ((drbg_flag_t)1<<5)
+#define DRBG_STRENGTH_MASK (DRBG_STRENGTH128 | DRBG_STRENGTH192 | \
+ DRBG_STRENGTH256)
+
+enum drbg_prefixes {
+ DRBG_PREFIX0 = 0x00,
+ DRBG_PREFIX1,
+ DRBG_PREFIX2,
+ DRBG_PREFIX3
+};
+
+#endif /* _DRBG_H */
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 3/7] DRBG kernel configuration options
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
2014-05-26 11:26 ` [PATCH v8 1/7] " Stephan Mueller
2014-05-26 11:27 ` [PATCH v8 2/7] header file for DRBG Stephan Mueller
@ 2014-05-26 11:27 ` Stephan Mueller
2014-05-26 11:28 ` [PATCH v8 4/7] compile the DRBG code Stephan Mueller
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:27 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
The different DRBG types of CTR, Hash, HMAC can be enabled or disabled
at compile time. At least one DRBG type shall be selected.
The default is the HMAC DRBG as its code base is smallest.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
crypto/Kconfig | 36 +++++++++++++++++++++++++++++++++++-
1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ce4012a..c9c1cd9 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -23,7 +23,7 @@ comment "Crypto core or helper"
config CRYPTO_FIPS
bool "FIPS 200 compliance"
- depends on CRYPTO_ANSI_CPRNG && !CRYPTO_MANAGER_DISABLE_TESTS
+ depends on (CRYPTO_ANSI_CPRNG || CRYTPO_DRBG) && !CRYPTO_MANAGER_DISABLE_TESTS
help
This options enables the fips boot option which is
required if you want to system to operate in a FIPS 200
@@ -1380,6 +1380,40 @@ config CRYPTO_ANSI_CPRNG
ANSI X9.31 A.2.4. Note that this option must be enabled if
CRYPTO_FIPS is selected
+menuconfig CRYTPO_DRBG
+ tristate "NIST SP800-90A DRBG"
+ depends on CRYPTO
+ select CRYPTO_RNG
+ help
+ NIST SP800-90A compliant DRBG. In the following submenu, one or
+ more of the DRBG types must be selected.
+
+if CRYTPO_DRBG
+
+config CRYPTO_DRBG_HMAC
+ bool "Enable HMAC DRBG"
+ default y
+ depends on CRYTPO_DRBG
+ select CRYPTO_HMAC
+ help
+ Enable the HMAC DRBG variant as defined in NIST SP800-90A.
+
+config CRYPTO_DRBG_HASH
+ bool "Enable Hash DRBG"
+ depends on CRYTPO_DRBG
+ select CRYPTO_HASH
+ help
+ Enable the Hash DRBG variant as defined in NIST SP800-90A.
+
+config CRYPTO_DRBG_CTR
+ bool "Enable CTR DRBG"
+ depends on CRYTPO_DRBG
+ select CRYPTO_AES
+ help
+ Enable the CTR DRBG variant as defined in NIST SP800-90A.
+
+endif #CRYTPO_DRBG
+
config CRYPTO_USER_API
tristate
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 4/7] compile the DRBG code
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
` (2 preceding siblings ...)
2014-05-26 11:27 ` [PATCH v8 3/7] DRBG kernel configuration options Stephan Mueller
@ 2014-05-26 11:28 ` Stephan Mueller
2014-05-26 11:29 ` [PATCH v8 5/7] DRBG testmgr test vectors Stephan Mueller
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:28 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
crypto/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/crypto/Makefile b/crypto/Makefile
index 38e64231..bfa94fa 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -92,6 +92,7 @@ obj-$(CONFIG_CRYPTO_842) += 842.o
obj-$(CONFIG_CRYPTO_RNG2) += rng.o
obj-$(CONFIG_CRYPTO_RNG2) += krng.o
obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o
+obj-$(CONFIG_CRYTPO_DRBG) += drbg.o
obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
obj-$(CONFIG_CRYPTO_GHASH) += ghash-generic.o
obj-$(CONFIG_CRYPTO_USER_API) += af_alg.o
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 5/7] DRBG testmgr test vectors
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
` (3 preceding siblings ...)
2014-05-26 11:28 ` [PATCH v8 4/7] compile the DRBG code Stephan Mueller
@ 2014-05-26 11:29 ` Stephan Mueller
2014-05-26 11:29 ` [PATCH v8 6/7] Add DRBG test code to testmgr Stephan Mueller
2014-05-26 11:30 ` [PATCH v8 7/7] Add documentation of drbg.stdrng Stephan Mueller
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:29 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
All types of the DRBG (CTR, HMAC, Hash) are covered with test vectors.
In addition, all permutations of use cases of the DRBG are covered:
* with and without predition resistance
* with and without additional information string
* with and without personalization string
As the DRBG implementation is agnositc of the specific backend cipher,
only test vectors for one specific backend cipher is used. For example:
the Hash DRBG uses the same code paths irrespectively of using SHA-256
or SHA-512. Thus, the test vectors for SHA-256 cover the testing of all
DRBG code paths of SHA-512.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
crypto/testmgr.h | 843 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 843 insertions(+)
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 3db83db..0030ff5 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -92,6 +92,21 @@ struct cprng_testvec {
unsigned short loops;
};
+struct drbg_testvec {
+ unsigned char *entropy;
+ size_t entropylen;
+ unsigned char *entpra;
+ unsigned char *entprb;
+ size_t entprlen;
+ unsigned char *addtla;
+ unsigned char *addtlb;
+ size_t addtllen;
+ unsigned char *pers;
+ size_t perslen;
+ unsigned char *expected;
+ size_t expectedlen;
+};
+
static char zeroed_string[48];
/*
@@ -19342,6 +19357,834 @@ static struct cprng_testvec ansi_cprng_aes_tv_template[] = {
},
};
+/*
+ * SP800-90A DRBG Test vectors from
+ * http://csrc.nist.gov/groups/STM/cavp/documents/drbg/drbgtestvectors.zip
+ *
+ * Test vectors for DRBG with prediction resistance. All types of DRBGs
+ * (Hash, HMAC, CTR) are tested with all permutations of use cases (w/ and
+ * w/o personalization string, w/ and w/o additional input string).
+ */
+static struct drbg_testvec drbg_pr_sha256_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\x72\x88\x4c\xcd\x6c\x85\x57\x70\xf7\x0b\x8b\x86"
+ "\xc1\xeb\xd2\x4e\x36\x14\xab\x18\xc4\x9c\xc9\xcf"
+ "\x1a\xe8\xf7\x7b\x02\x49\x73\xd7\xf1\x42\x7d\xc6"
+ "\x3f\x29\x2d\xec\xd3\x66\x51\x3f\x1d\x8d\x5b\x4e",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\x38\x9c\x91\xfa\xc2\xa3\x46\x89\x56\x08\x3f\x62"
+ "\x73\xd5\x22\xa9\x29\x63\x3a\x1d\xe5\x5d\x5e\x4f"
+ "\x67\xb0\x67\x7a\x5e\x9e\x0c\x62",
+ .entprb = (unsigned char *)
+ "\xb2\x8f\x36\xb2\xf6\x8d\x39\x13\xfa\x6c\x66\xcf"
+ "\x62\x8a\x7e\x8c\x12\x33\x71\x9c\x69\xe4\xa5\xf0"
+ "\x8c\xee\xeb\x9c\xf5\x31\x98\x31",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x52\x7b\xa3\xad\x71\x77\xa4\x49\x42\x04\x61\xc7"
+ "\xf0\xaf\xa5\xfd\xd3\xb3\x0d\x6a\x61\xba\x35\x49"
+ "\xbb\xaa\xaf\xe4\x25\x7d\xb5\x48\xaf\x5c\x18\x3d"
+ "\x33\x8d\x9d\x45\xdf\x98\xd5\x94\xa8\xda\x92\xfe"
+ "\xc4\x3c\x94\x2a\xcf\x7f\x7b\xf2\xeb\x28\xa9\xf1"
+ "\xe0\x86\x30\xa8\xfe\xf2\x48\x90\x91\x0c\x75\xb5"
+ "\x3c\x00\xf0\x4d\x09\x4f\x40\xa7\xa2\x8c\x52\xdf"
+ "\x52\xef\x17\xbf\x3d\xd1\xa2\x31\xb4\xb8\xdc\xe6"
+ "\x5b\x0d\x1f\x78\x36\xb4\xe6\x4b\xa7\x11\x25\xd5"
+ "\x94\xc6\x97\x36\xab\xf0\xe5\x31\x28\x6a\xbb\xce"
+ "\x30\x81\xa6\x8f\x27\x14\xf8\x1c",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x5d\xf2\x14\xbc\xf6\xb5\x4e\x0b\xf0\x0d\x6f\x2d"
+ "\xe2\x01\x66\x7b\xd0\xa4\x73\xa4\x21\xdd\xb0\xc0"
+ "\x51\x79\x09\xf4\xea\xa9\x08\xfa\xa6\x67\xe0\xe1"
+ "\xd1\x88\xa8\xad\xee\x69\x74\xb3\x55\x06\x9b\xf6",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xef\x48\x06\xa2\xc2\x45\xf1\x44\xfa\x34\x2c\xeb"
+ "\x8d\x78\x3c\x09\x8f\x34\x72\x20\xf2\xe7\xfd\x13"
+ "\x76\x0a\xf6\xdc\x3c\xf5\xc0\x15",
+ .entprb = (unsigned char *)
+ "\x4b\xbe\xe5\x24\xed\x6a\x2d\x0c\xdb\x73\x5e\x09"
+ "\xf9\xad\x67\x7c\x51\x47\x8b\x6b\x30\x2a\xc6\xde"
+ "\x76\xaa\x55\x04\x8b\x0a\x72\x95",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x3b\x14\x71\x99\xa1\xda\xa0\x42\xe6\xc8\x85\x32"
+ "\x70\x20\x32\x53\x9a\xbe\xd1\x1e\x15\xef\xfb\x4c"
+ "\x25\x6e\x19\x3a\xf0\xb9\xcb\xde\xf0\x3b\xc6\x18"
+ "\x4d\x85\x5a\x9b\xf1\xe3\xc2\x23\x03\x93\x08\xdb"
+ "\xa7\x07\x4b\x33\x78\x40\x4d\xeb\x24\xf5\x6e\x81"
+ "\x4a\x1b\x6e\xa3\x94\x52\x43\xb0\xaf\x2e\x21\xf4"
+ "\x42\x46\x8e\x90\xed\x34\x21\x75\xea\xda\x67\xb6"
+ "\xe4\xf6\xff\xc6\x31\x6c\x9a\x5a\xdb\xb3\x97\x13"
+ "\x09\xd3\x20\x98\x33\x2d\x6d\xd7\xb5\x6a\xa8\xa9"
+ "\x9a\x5b\xd6\x87\x52\xa1\x89\x2b\x4b\x9c\x64\x60"
+ "\x50\x47\xa3\x63\x81\x16\xaf\x19",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\xbe\x13\xdb\x2a\xe9\xa8\xfe\x09\x97\xe1\xce\x5d"
+ "\xe8\xbb\xc0\x7c\x4f\xcb\x62\x19\x3f\x0f\xd2\xad"
+ "\xa9\xd0\x1d\x59\x02\xc4\xff\x70",
+ .addtlb = (unsigned char *)
+ "\x6f\x96\x13\xe2\xa7\xf5\x6c\xfe\xdf\x66\xe3\x31"
+ "\x63\x76\xbf\x20\x27\x06\x49\xf1\xf3\x01\x77\x41"
+ "\x9f\xeb\xe4\x38\xfe\x67\x00\xcd",
+ .addtllen = 32,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\xc6\x1c\xaf\x83\xa2\x56\x38\xf9\xb0\xbc\xd9\x85"
+ "\xf5\x2e\xc4\x46\x9c\xe1\xb9\x40\x98\x70\x10\x72"
+ "\xd7\x7d\x15\x85\xa1\x83\x5a\x97\xdf\xc8\xa8\xe8"
+ "\x03\x4c\xcb\x70\x35\x8b\x90\x94\x46\x8a\x6e\xa1",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xc9\x05\xa4\xcf\x28\x80\x4b\x93\x0f\x8b\xc6\xf9"
+ "\x09\x41\x58\x74\xe9\xec\x28\xc7\x53\x0a\x73\x60"
+ "\xba\x0a\xde\x57\x5b\x4b\x9f\x29",
+ .entprb = (unsigned char *)
+ "\x4f\x31\xd2\xeb\xac\xfa\xa8\xe2\x01\x7d\xf3\xbd"
+ "\x42\xbd\x20\xa0\x30\x65\x74\xd5\x5d\xd2\xad\xa4"
+ "\xa9\xeb\x1f\x4d\xf6\xfd\xb8\x26",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\xf6\x13\x05\xcb\x83\x60\x16\x42\x49\x1d\xc6\x25"
+ "\x3b\x8c\x31\xa3\xbe\x8b\xbd\x1c\xe2\xec\x1d\xde"
+ "\xbb\xbf\xa1\xac\xa8\x9f\x50\xce\x69\xce\xef\xd5"
+ "\xd6\xf2\xef\x6a\xf7\x81\x38\xdf\xbc\xa7\x5a\xb9"
+ "\xb2\x42\x65\xab\xe4\x86\x8d\x2d\x9d\x59\x99\x2c"
+ "\x5a\x0d\x71\x55\x98\xa4\x45\xc2\x8d\xdb\x05\x5e"
+ "\x50\x21\xf7\xcd\xe8\x98\x43\xce\x57\x74\x63\x4c"
+ "\xf3\xb1\xa5\x14\x1e\x9e\x01\xeb\x54\xd9\x56\xae"
+ "\xbd\xb6\x6f\x1a\x47\x6b\x3b\x44\xe4\xa2\xe9\x3c"
+ "\x6c\x83\x12\x30\xb8\x78\x7f\x8e\x54\x82\xd4\xfe"
+ "\x90\x35\x0d\x4c\x4d\x85\xe7\x13",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\xa5\xbf\xac\x4f\x71\xa1\xbb\x67\x94\xc6\x50\xc7"
+ "\x2a\x45\x9e\x10\xa8\xed\xf7\x52\x4f\xfe\x21\x90"
+ "\xa4\x1b\xe1\xe2\x53\xcc\x61\x47",
+ .perslen = 32,
+ }, {
+ .entropy = (unsigned char *)
+ "\xb6\xc1\x8d\xdf\x99\x54\xbe\x95\x10\x48\xd9\xf6"
+ "\xd7\x48\xa8\x73\x2d\x74\xde\x1e\xde\x57\x7e\xf4"
+ "\x7b\x7b\x64\xef\x88\x7a\xa8\x10\x4b\xe1\xc1\x87"
+ "\xbb\x0b\xe1\x39\x39\x50\xaf\x68\x9c\xa2\xbf\x5e",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xdc\x81\x0a\x01\x58\xa7\x2e\xce\xee\x48\x8c\x7c"
+ "\x77\x9e\x3c\xf1\x17\x24\x7a\xbb\xab\x9f\xca\x12"
+ "\x19\xaf\x97\x2d\x5f\xf9\xff\xfc",
+ .entprb = (unsigned char *)
+ "\xaf\xfc\x4f\x98\x8b\x93\x95\xc1\xb5\x8b\x7f\x73"
+ "\x6d\xa6\xbe\x6d\x33\xeb\x2c\x82\xb1\xaf\xc1\xb6"
+ "\xb6\x05\xe2\x44\xaa\xfd\xe7\xdb",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x51\x79\xde\x1c\x0f\x58\xf3\xf4\xc9\x57\x2e\x31"
+ "\xa7\x09\xa1\x53\x64\x63\xa2\xc5\x1d\x84\x88\x65"
+ "\x01\x1b\xc6\x16\x3c\x49\x5b\x42\x8e\x53\xf5\x18"
+ "\xad\x94\x12\x0d\x4f\x55\xcc\x45\x5c\x98\x0f\x42"
+ "\x28\x2f\x47\x11\xf9\xc4\x01\x97\x6b\xa0\x94\x50"
+ "\xa9\xd1\x5e\x06\x54\x3f\xdf\xbb\xc4\x98\xee\x8b"
+ "\xba\xa9\xfa\x49\xee\x1d\xdc\xfb\x50\xf6\x51\x9f"
+ "\x6c\x4a\x9a\x6f\x63\xa2\x7d\xad\xaf\x3a\x24\xa0"
+ "\xd9\x9f\x07\xeb\x15\xee\x26\xe0\xd5\x63\x39\xda"
+ "\x3c\x59\xd6\x33\x6c\x02\xe8\x05\x71\x46\x68\x44"
+ "\x63\x4a\x68\x72\xe9\xf5\x55\xfe",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x15\x20\x2f\xf6\x98\x28\x63\xa2\xc4\x4e\xbb\x6c"
+ "\xb2\x25\x92\x61\x79\xc9\x22\xc4\x61\x54\x96\xff"
+ "\x4a\x85\xca\x80\xfe\x0d\x1c\xd0",
+ .addtlb = (unsigned char *)
+ "\xde\x29\x8e\x03\x42\x61\xa3\x28\x5e\xc8\x80\xc2"
+ "\x6d\xbf\xad\x13\xe1\x8d\x2a\xc7\xe8\xc7\x18\x89"
+ "\x42\x58\x9e\xd6\xcc\xad\x7b\x1e",
+ .addtllen = 32,
+ .pers = (unsigned char *)
+ "\x84\xc3\x73\x9e\xce\xb3\xbc\x89\xf7\x62\xb3\xe1"
+ "\xd7\x48\x45\x8a\xa9\xcc\xe9\xed\xd5\x81\x84\x52"
+ "\x82\x4c\xdc\x19\xb8\xf8\x92\x5c",
+ .perslen = 32,
+ },
+};
+
+static struct drbg_testvec drbg_pr_hmac_sha256_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\x99\x69\xe5\x4b\x47\x03\xff\x31\x78\x5b\x87\x9a"
+ "\x7e\x5c\x0e\xae\x0d\x3e\x30\x95\x59\xe9\xfe\x96"
+ "\xb0\x67\x6d\x49\xd5\x91\xea\x4d\x07\xd2\x0d\x46"
+ "\xd0\x64\x75\x7d\x30\x23\xca\xc2\x37\x61\x27\xab",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xc6\x0f\x29\x99\x10\x0f\x73\x8c\x10\xf7\x47\x92"
+ "\x67\x6a\x3f\xc4\xa2\x62\xd1\x37\x21\x79\x80\x46"
+ "\xe2\x9a\x29\x51\x81\x56\x9f\x54",
+ .entprb = (unsigned char *)
+ "\xc1\x1d\x45\x24\xc9\x07\x1b\xd3\x09\x60\x15\xfc"
+ "\xf7\xbc\x24\xa6\x07\xf2\x2f\xa0\x65\xc9\x37\x65"
+ "\x8a\x2a\x77\xa8\x69\x90\x89\xf4",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\xab\xc0\x15\x85\x60\x94\x80\x3a\x93\x8d\xff\xd2"
+ "\x0d\xa9\x48\x43\x87\x0e\xf9\x35\xb8\x2c\xfe\xc1"
+ "\x77\x06\xb8\xf5\x51\xb8\x38\x50\x44\x23\x5d\xd4"
+ "\x4b\x59\x9f\x94\xb3\x9b\xe7\x8d\xd4\x76\xe0\xcf"
+ "\x11\x30\x9c\x99\x5a\x73\x34\xe0\xa7\x8b\x37\xbc"
+ "\x95\x86\x23\x50\x86\xfa\x3b\x63\x7b\xa9\x1c\xf8"
+ "\xfb\x65\xef\xa2\x2a\x58\x9c\x13\x75\x31\xaa\x7b"
+ "\x2d\x4e\x26\x07\xaa\xc2\x72\x92\xb0\x1c\x69\x8e"
+ "\x6e\x01\xae\x67\x9e\xb8\x7c\x01\xa8\x9c\x74\x22"
+ "\xd4\x37\x2d\x6d\x75\x4a\xba\xbb\x4b\xf8\x96\xfc"
+ "\xb1\xcd\x09\xd6\x92\xd0\x28\x3f",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\xb9\x1f\xe9\xef\xdd\x9b\x7d\x20\xb6\xec\xe0\x2f"
+ "\xdb\x76\x24\xce\x41\xc8\x3a\x4a\x12\x7f\x3e\x2f"
+ "\xae\x05\x99\xea\xb5\x06\x71\x0d\x0c\x4c\xb4\x05"
+ "\x26\xc6\xbd\xf5\x7f\x2a\x3d\xf2\xb5\x49\x7b\xda",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xef\x67\x50\x9c\xa7\x7d\xdf\xb7\x2d\x81\x01\xa4"
+ "\x62\x81\x6a\x69\x5b\xb3\x37\x45\xa7\x34\x8e\x26"
+ "\x46\xd9\x26\xa2\x19\xd4\x94\x43",
+ .entprb = (unsigned char *)
+ "\x97\x75\x53\x53\xba\xb4\xa6\xb2\x91\x60\x71\x79"
+ "\xd1\x6b\x4a\x24\x9a\x34\x66\xcc\x33\xab\x07\x98"
+ "\x51\x78\x72\xb2\x79\xfd\x2c\xff",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x9c\xdc\x63\x8a\x19\x23\x22\x66\x0c\xc5\xb9\xd7"
+ "\xfb\x2a\xb0\x31\xe3\x8a\x36\xa8\x5a\xa8\x14\xda"
+ "\x1e\xa9\xcc\xfe\xb8\x26\x44\x83\x9f\xf6\xff\xaa"
+ "\xc8\x98\xb8\x30\x35\x3b\x3d\x36\xd2\x49\xd4\x40"
+ "\x62\x0a\x65\x10\x76\x55\xef\xc0\x95\x9c\xa7\xda"
+ "\x3f\xcf\xb7\x7b\xc6\xe1\x28\x52\xfc\x0c\xe2\x37"
+ "\x0d\x83\xa7\x51\x4b\x31\x47\x3c\xe1\x3c\xae\x70"
+ "\x01\xc8\xa3\xd3\xc2\xac\x77\x9c\xd1\x68\x77\x9b"
+ "\x58\x27\x3b\xa5\x0f\xc2\x7a\x8b\x04\x65\x62\xd5"
+ "\xe8\xd6\xfe\x2a\xaf\xd3\xd3\xfe\xbd\x18\xfb\xcd"
+ "\xcd\x66\xb5\x01\x69\x66\xa0\x3c",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x17\xc1\x56\xcb\xcc\x50\xd6\x03\x7d\x45\x76\xa3"
+ "\x75\x76\xc1\x4a\x66\x1b\x2e\xdf\xb0\x2e\x7d\x56"
+ "\x6d\x99\x3b\xc6\x58\xda\x03\xf6",
+ .addtlb = (unsigned char *)
+ "\x7c\x7b\x4a\x4b\x32\x5e\x6f\x67\x34\xf5\x21\x4c"
+ "\xf9\x96\xf9\xbf\x1c\x8c\x81\xd3\x9b\x60\x6a\x44"
+ "\xc6\x03\xa2\xfb\x13\x20\x19\xb7",
+ .addtllen = 32,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x13\x54\x96\xfc\x1b\x7d\x28\xf3\x18\xc9\xa7\x89"
+ "\xb6\xb3\xc8\x72\xac\x00\xd4\x59\x36\x25\x05\xaf"
+ "\xa5\xdb\x96\xcb\x3c\x58\x46\x87\xa5\xaa\xbf\x20"
+ "\x3b\xfe\x23\x0e\xd1\xc7\x41\x0f\x3f\xc9\xb3\x67",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\xe2\xbd\xb7\x48\x08\x06\xf3\xe1\x93\x3c\xac\x79"
+ "\xa7\x2b\x11\xda\xe3\x2e\xe1\x91\xa5\x02\x19\x57"
+ "\x20\x28\xad\xf2\x60\xd7\xcd\x45",
+ .entprb = (unsigned char *)
+ "\x8b\xd4\x69\xfc\xff\x59\x95\x95\xc6\x51\xde\x71"
+ "\x68\x5f\xfc\xf9\x4a\xab\xec\x5a\xcb\xbe\xd3\x66"
+ "\x1f\xfa\x74\xd3\xac\xa6\x74\x60",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x1f\x9e\xaf\xe4\xd2\x46\xb7\x47\x41\x4c\x65\x99"
+ "\x01\xe9\x3b\xbb\x83\x0c\x0a\xb0\xc1\x3a\xe2\xb3"
+ "\x31\x4e\xeb\x93\x73\xee\x0b\x26\xc2\x63\xa5\x75"
+ "\x45\x99\xd4\x5c\x9f\xa1\xd4\x45\x87\x6b\x20\x61"
+ "\x40\xea\x78\xa5\x32\xdf\x9e\x66\x17\xaf\xb1\x88"
+ "\x9e\x2e\x23\xdd\xc1\xda\x13\x97\x88\xa5\xb6\x5e"
+ "\x90\x14\x4e\xef\x13\xab\x5c\xd9\x2c\x97\x9e\x7c"
+ "\xd7\xf8\xce\xea\x81\xf5\xcd\x71\x15\x49\x44\xce"
+ "\x83\xb6\x05\xfb\x7d\x30\xb5\x57\x2c\x31\x4f\xfc"
+ "\xfe\x80\xb6\xc0\x13\x0c\x5b\x9b\x2e\x8f\x3d\xfc"
+ "\xc2\xa3\x0c\x11\x1b\x80\x5f\xf3",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\x64\xb6\xfc\x60\xbc\x61\x76\x23\x6d\x3f\x4a\x0f"
+ "\xe1\xb4\xd5\x20\x9e\x70\xdd\x03\x53\x6d\xbf\xce"
+ "\xcd\x56\x80\xbc\xb8\x15\xc8\xaa",
+ .perslen = 32,
+ }, {
+ .entropy = (unsigned char *)
+ "\xc7\xcc\xbc\x67\x7e\x21\x66\x1e\x27\x2b\x63\xdd"
+ "\x3a\x78\xdc\xdf\x66\x6d\x3f\x24\xae\xcf\x37\x01"
+ "\xa9\x0d\x89\x8a\xa7\xdc\x81\x58\xae\xb2\x10\x15"
+ "\x7e\x18\x44\x6d\x13\xea\xdf\x37\x85\xfe\x81\xfb",
+ .entropylen = 48,
+ .entpra = (unsigned char *)
+ "\x7b\xa1\x91\x5b\x3c\x04\xc4\x1b\x1d\x19\x2f\x1a"
+ "\x18\x81\x60\x3c\x6c\x62\x91\xb7\xe9\xf5\xcb\x96"
+ "\xbb\x81\x6a\xcc\xb5\xae\x55\xb6",
+ .entprb = (unsigned char *)
+ "\x99\x2c\xc7\x78\x7e\x3b\x88\x12\xef\xbe\xd3\xd2"
+ "\x7d\x2a\xa5\x86\xda\x8d\x58\x73\x4a\x0a\xb2\x2e"
+ "\xbb\x4c\x7e\xe3\x9a\xb6\x81\xc1",
+ .entprlen = 32,
+ .expected = (unsigned char *)
+ "\x95\x6f\x95\xfc\x3b\xb7\xfe\x3e\xd0\x4e\x1a\x14"
+ "\x6c\x34\x7f\x7b\x1d\x0d\x63\x5e\x48\x9c\x69\xe6"
+ "\x46\x07\xd2\x87\xf3\x86\x52\x3d\x98\x27\x5e\xd7"
+ "\x54\xe7\x75\x50\x4f\xfb\x4d\xfd\xac\x2f\x4b\x77"
+ "\xcf\x9e\x8e\xcc\x16\xa2\x24\xcd\x53\xde\x3e\xc5"
+ "\x55\x5d\xd5\x26\x3f\x89\xdf\xca\x8b\x4e\x1e\xb6"
+ "\x88\x78\x63\x5c\xa2\x63\x98\x4e\x6f\x25\x59\xb1"
+ "\x5f\x2b\x23\xb0\x4b\xa5\x18\x5d\xc2\x15\x74\x40"
+ "\x59\x4c\xb4\x1e\xcf\x9a\x36\xfd\x43\xe2\x03\xb8"
+ "\x59\x91\x30\x89\x2a\xc8\x5a\x43\x23\x7c\x73\x72"
+ "\xda\x3f\xad\x2b\xba\x00\x6b\xd1",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x18\xe8\x17\xff\xef\x39\xc7\x41\x5c\x73\x03\x03"
+ "\xf6\x3d\xe8\x5f\xc8\xab\xe4\xab\x0f\xad\xe8\xd6"
+ "\x86\x88\x55\x28\xc1\x69\xdd\x76",
+ .addtlb = (unsigned char *)
+ "\xac\x07\xfc\xbe\x87\x0e\xd3\xea\x1f\x7e\xb8\xe7"
+ "\x9d\xec\xe8\xe7\xbc\xf3\x18\x25\x77\x35\x4a\xaa"
+ "\x00\x99\x2a\xdd\x0a\x00\x50\x82",
+ .addtllen = 32,
+ .pers = (unsigned char *)
+ "\xbc\x55\xab\x3c\xf6\x52\xb0\x11\x3d\x7b\x90\xb8"
+ "\x24\xc9\x26\x4e\x5a\x1e\x77\x0d\x3d\x58\x4a\xda"
+ "\xd1\x81\xe9\xf8\xeb\x30\x8f\x6f",
+ .perslen = 32,
+ },
+};
+
+static struct drbg_testvec drbg_pr_ctr_aes128_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\xd1\x44\xc6\x61\x81\x6d\xca\x9d\x15\x28\x8a\x42"
+ "\x94\xd7\x28\x9c\x43\x77\x19\x29\x1a\x6d\xc3\xa2",
+ .entropylen = 24,
+ .entpra = (unsigned char *)
+ "\x96\xd8\x9e\x45\x32\xc9\xd2\x08\x7a\x6d\x97\x15"
+ "\xb4\xec\x80\xb1",
+ .entprb = (unsigned char *)
+ "\x8b\xb6\x72\xb5\x24\x0b\x98\x65\x95\x95\xe9\xc9"
+ "\x28\x07\xeb\xc2",
+ .entprlen = 16,
+ .expected = (unsigned char *)
+ "\x70\x19\xd0\x4c\x45\x78\xd6\x68\xa9\x9a\xaa\xfe"
+ "\xc1\xdf\x27\x9a\x1c\x0d\x0d\xf7\x24\x75\x46\xcc"
+ "\x77\x6b\xdf\x89\xc6\x94\xdc\x74\x50\x10\x70\x18"
+ "\x9b\xdc\x96\xb4\x89\x23\x40\x1a\xce\x09\x87\xce"
+ "\xd2\xf3\xd5\xe4\x51\x67\x74\x11\x5a\xcc\x8b\x3b"
+ "\x8a\xf1\x23\xa8",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x8e\x83\xe0\xeb\x37\xea\x3e\x53\x5e\x17\x6e\x77"
+ "\xbd\xb1\x53\x90\xfc\xdc\xc1\x3c\x9a\x88\x22\x94",
+ .entropylen = 24,
+ .entpra = (unsigned char *)
+ "\x6a\x85\xe7\x37\xc8\xf1\x04\x31\x98\x4f\xc8\x73"
+ "\x67\xd1\x08\xf8",
+ .entprb = (unsigned char *)
+ "\xd7\xa4\x68\xe2\x12\x74\xc3\xd9\xf1\xb7\x05\xbc"
+ "\xd4\xba\x04\x58",
+ .entprlen = 16,
+ .expected = (unsigned char *)
+ "\x78\xd6\xa6\x70\xff\xd1\x82\xf5\xa2\x88\x7f\x6d"
+ "\x3d\x8c\x39\xb1\xa8\xcb\x2c\x91\xab\x14\x7e\xbc"
+ "\x95\x45\x9f\x24\xb8\x20\xac\x21\x23\xdb\x72\xd7"
+ "\x12\x8d\x48\x95\xf3\x19\x0c\x43\xc6\x19\x45\xfc"
+ "\x8b\xac\x40\x29\x73\x00\x03\x45\x5e\x12\xff\x0c"
+ "\xc1\x02\x41\x82",
+ .expectedlen = 64,
+ .addtla = (unsigned char *)
+ "\xa2\xd9\x38\xcf\x8b\x29\x67\x5b\x65\x62\x6f\xe8"
+ "\xeb\xb3\x01\x76",
+ .addtlb = (unsigned char *)
+ "\x59\x63\x1e\x81\x8a\x14\xa8\xbb\xa1\xb8\x41\x25"
+ "\xd0\x7f\xcc\x43",
+ .addtllen = 16,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x04\xd9\x49\xa6\xdc\xe8\x6e\xbb\xf1\x08\x77\x2b"
+ "\x9e\x08\xca\x92\x65\x16\xda\x99\xa2\x59\xf3\xe8",
+ .entropylen = 24,
+ .entpra = (unsigned char *)
+ "\x38\x7e\x3f\x6b\x51\x70\x7b\x20\xec\x53\xd0\x66"
+ "\xc3\x0f\xe3\xb0",
+ .entprb = (unsigned char *)
+ "\xe0\x86\xa6\xaa\x5f\x72\x2f\xad\xf7\xef\x06\xb8"
+ "\xd6\x9c\x9d\xe8",
+ .entprlen = 16,
+ .expected = (unsigned char *)
+ "\xc9\x0a\xaf\x85\x89\x71\x44\x66\x4f\x25\x0b\x2b"
+ "\xde\xd8\xfa\xff\x52\x5a\x1b\x32\x5e\x41\x7a\x10"
+ "\x1f\xef\x1e\x62\x23\xe9\x20\x30\xc9\x0d\xad\x69"
+ "\xb4\x9c\x5b\xf4\x87\x42\xd5\xae\x5e\x5e\x43\xcc"
+ "\xd9\xfd\x0b\x93\x4a\xe3\xd4\x06\x37\x36\x0f\x3f"
+ "\x72\x82\x0c\xcf",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\xbf\xa4\x9a\x8f\x7b\xd8\xb1\x7a\x9d\xfa\x45\xed"
+ "\x21\x52\xb3\xad",
+ .perslen = 16,
+ }, {
+ .entropy = (unsigned char *)
+ "\x92\x89\x8f\x31\xfa\x1c\xff\x6d\x18\x2f\x26\x06"
+ "\x43\xdf\xf8\x18\xc2\xa4\xd9\x72\xc3\xb9\xb6\x97",
+ .entropylen = 24,
+ .entpra = (unsigned char *)
+ "\x20\x72\x8a\x06\xf8\x6f\x8d\xd4\x41\xe2\x72\xb7"
+ "\xc4\x2c\xe8\x10",
+ .entprb = (unsigned char *)
+ "\x3d\xb0\xf0\x94\xf3\x05\x50\x33\x17\x86\x3e\x22"
+ "\x08\xf7\xa5\x01",
+ .entprlen = 16,
+ .expected = (unsigned char *)
+ "\x5a\x35\x39\x87\x0f\x4d\x22\xa4\x09\x24\xee\x71"
+ "\xc9\x6f\xac\x72\x0a\xd6\xf0\x88\x82\xd0\x83\x28"
+ "\x73\xec\x3f\x93\xd8\xab\x45\x23\xf0\x7e\xac\x45"
+ "\x14\x5e\x93\x9f\xb1\xd6\x76\x43\x3d\xb6\xe8\x08"
+ "\x88\xf6\xda\x89\x08\x77\x42\xfe\x1a\xf4\x3f\xc4"
+ "\x23\xc5\x1f\x68",
+ .expectedlen = 64,
+ .addtla = (unsigned char *)
+ "\x1a\x40\xfa\xe3\xcc\x6c\x7c\xa0\xf8\xda\xba\x59"
+ "\x23\x6d\xad\x1d",
+ .addtlb = (unsigned char *)
+ "\x9f\x72\x76\x6c\xc7\x46\xe5\xed\x2e\x53\x20\x12"
+ "\xbc\x59\x31\x8c",
+ .addtllen = 16,
+ .pers = (unsigned char *)
+ "\xea\x65\xee\x60\x26\x4e\x7e\xb6\x0e\x82\x68\xc4"
+ "\x37\x3c\x5c\x0b",
+ .perslen = 16,
+ },
+};
+
+/*
+ * SP800-90A DRBG Test vectors from
+ * http://csrc.nist.gov/groups/STM/cavp/documents/drbg/drbgtestvectors.zip
+ *
+ * Test vectors for DRBG without prediction resistance. All types of DRBGs
+ * (Hash, HMAC, CTR) are tested with all permutations of use cases (w/ and
+ * w/o personalization string, w/ and w/o additional input string).
+ */
+static struct drbg_testvec drbg_nopr_sha256_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\xa6\x5a\xd0\xf3\x45\xdb\x4e\x0e\xff\xe8\x75\xc3"
+ "\xa2\xe7\x1f\x42\xc7\x12\x9d\x62\x0f\xf5\xc1\x19"
+ "\xa9\xef\x55\xf0\x51\x85\xe0\xfb\x85\x81\xf9\x31"
+ "\x75\x17\x27\x6e\x06\xe9\x60\x7d\xdb\xcb\xcc\x2e",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xd3\xe1\x60\xc3\x5b\x99\xf3\x40\xb2\x62\x82\x64"
+ "\xd1\x75\x10\x60\xe0\x04\x5d\xa3\x83\xff\x57\xa5"
+ "\x7d\x73\xa6\x73\xd2\xb8\xd8\x0d\xaa\xf6\xa6\xc3"
+ "\x5a\x91\xbb\x45\x79\xd7\x3f\xd0\xc8\xfe\xd1\x11"
+ "\xb0\x39\x13\x06\x82\x8a\xdf\xed\x52\x8f\x01\x81"
+ "\x21\xb3\xfe\xbd\xc3\x43\xe7\x97\xb8\x7d\xbb\x63"
+ "\xdb\x13\x33\xde\xd9\xd1\xec\xe1\x77\xcf\xa6\xb7"
+ "\x1f\xe8\xab\x1d\xa4\x66\x24\xed\x64\x15\xe5\x1c"
+ "\xcd\xe2\xc7\xca\x86\xe2\x83\x99\x0e\xea\xeb\x91"
+ "\x12\x04\x15\x52\x8b\x22\x95\x91\x02\x81\xb0\x2d"
+ "\xd4\x31\xf4\xc9\xf7\x04\x27\xdf",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x73\xd3\xfb\xa3\x94\x5f\x2b\x5f\xb9\x8f\xf6\x9c"
+ "\x8a\x93\x17\xae\x19\xc3\x4c\xc3\xd6\xca\xa3\x2d"
+ "\x16\xfc\x42\xd2\x2d\xd5\x6f\x56\xcc\x1d\x30\xff"
+ "\x9e\x06\x3e\x09\xce\x58\xe6\x9a\x35\xb3\xa6\x56",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\x71\x7b\x93\x46\x1a\x40\xaa\x35\xa4\xaa\xc5\xe7"
+ "\x6d\x5b\x5b\x8a\xa0\xdf\x39\x7d\xae\x71\x58\x5b"
+ "\x3c\x7c\xb4\xf0\x89\xfa\x4a\x8c\xa9\x5c\x54\xc0"
+ "\x40\xdf\xbc\xce\x26\x81\x34\xf8\xba\x7d\x1c\xe8"
+ "\xad\x21\xe0\x74\xcf\x48\x84\x30\x1f\xa1\xd5\x4f"
+ "\x81\x42\x2f\xf4\xdb\x0b\x23\xf8\x73\x27\xb8\x1d"
+ "\x42\xf8\x44\x58\xd8\x5b\x29\x27\x0a\xf8\x69\x59"
+ "\xb5\x78\x44\xeb\x9e\xe0\x68\x6f\x42\x9a\xb0\x5b"
+ "\xe0\x4e\xcb\x6a\xaa\xe2\xd2\xd5\x33\x25\x3e\xe0"
+ "\x6c\xc7\x6a\x07\xa5\x03\x83\x9f\xe2\x8b\xd1\x1c"
+ "\x70\xa8\x07\x59\x97\xeb\xf6\xbe",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\xf4\xd5\x98\x3d\xa8\xfc\xfa\x37\xb7\x54\x67\x73"
+ "\xc7\xc3\xdd\x47\x34\x71\x02\x5d\xc1\xa0\xd3\x10"
+ "\xc1\x8b\xbd\xf5\x66\x34\x6f\xdd",
+ .addtlb = (unsigned char *)
+ "\xf7\x9e\x6a\x56\x0e\x73\xe9\xd9\x7a\xd1\x69\xe0"
+ "\x6f\x8c\x55\x1c\x44\xd1\xce\x6f\x28\xcc\xa4\x4d"
+ "\xa8\xc0\x85\xd1\x5a\x0c\x59\x40",
+ .addtllen = 32,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x2a\x85\xa9\x8b\xd0\xda\x83\xd6\xad\xab\x9f\xbb"
+ "\x54\x31\x15\x95\x1c\x4d\x49\x9f\x6a\x15\xf6\xe4"
+ "\x15\x50\x88\x06\x29\x0d\xed\x8d\xb9\x6f\x96\xe1"
+ "\x83\x9f\xf7\x88\xda\x84\xbf\x44\x28\xd9\x1d\xaa",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\x2d\x55\xde\xc9\xed\x05\x47\x07\x3d\x04\xfc\x28"
+ "\x0f\x92\xf0\x4d\xd8\x00\x32\x47\x0a\x1b\x1c\x4b"
+ "\xef\xd9\x97\xa1\x17\x67\xda\x26\x6c\xfe\x76\x46"
+ "\x6f\xbc\x6d\x82\x4e\x83\x8a\x98\x66\x6c\x01\xb6"
+ "\xe6\x64\xe0\x08\x10\x6f\xd3\x5d\x90\xe7\x0d\x72"
+ "\xa6\xa7\xe3\xbb\x98\x11\x12\x56\x23\xc2\x6d\xd1"
+ "\xc8\xa8\x7a\x39\xf3\x34\xe3\xb8\xf8\x66\x00\x77"
+ "\x7d\xcf\x3c\x3e\xfa\xc9\x0f\xaf\xe0\x24\xfa\xe9"
+ "\x84\xf9\x6a\x01\xf6\x35\xdb\x5c\xab\x2a\xef\x4e"
+ "\xac\xab\x55\xb8\x9b\xef\x98\x68\xaf\x51\xd8\x16"
+ "\xa5\x5e\xae\xf9\x1e\xd2\xdb\xe6",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\xa8\x80\xec\x98\x30\x98\x15\xd2\xc6\xc4\x68\xf1"
+ "\x3a\x1c\xbf\xce\x6a\x40\x14\xeb\x36\x99\x53\xda"
+ "\x57\x6b\xce\xa4\x1c\x66\x3d\xbc",
+ .perslen = 32,
+ }, {
+ .entropy = (unsigned char *)
+ "\x69\xed\x82\xa9\xc5\x7b\xbf\xe5\x1d\x2f\xcb\x7a"
+ "\xd3\x50\x7d\x96\xb4\xb9\x2b\x50\x77\x51\x27\x74"
+ "\x33\x74\xba\xf1\x30\xdf\x8e\xdf\x87\x1d\x87\xbc"
+ "\x96\xb2\xc3\xa7\xed\x60\x5e\x61\x4e\x51\x29\x1a",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xa5\x71\x24\x31\x11\xfe\x13\xe1\xa8\x24\x12\xfb"
+ "\x37\xa1\x27\xa5\xab\x77\xa1\x9f\xae\x8f\xaf\x13"
+ "\x93\xf7\x53\x85\x91\xb6\x1b\xab\xd4\x6b\xea\xb6"
+ "\xef\xda\x4c\x90\x6e\xef\x5f\xde\xe1\xc7\x10\x36"
+ "\xd5\x67\xbd\x14\xb6\x89\x21\x0c\xc9\x92\x65\x64"
+ "\xd0\xf3\x23\xe0\x7f\xd1\xe8\x75\xc2\x85\x06\xea"
+ "\xca\xc0\xcb\x79\x2d\x29\x82\xfc\xaa\x9a\xc6\x95"
+ "\x7e\xdc\x88\x65\xba\xec\x0e\x16\x87\xec\xa3\x9e"
+ "\xd8\x8c\x80\xab\x3a\x64\xe0\xcb\x0e\x45\x98\xdd"
+ "\x7c\x6c\x6c\x26\x11\x13\xc8\xce\xa9\x47\xa6\x06"
+ "\x57\xa2\x66\xbb\x2d\x7f\xf3\xc1",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x74\xd3\x6d\xda\xe8\xd6\x86\x5f\x63\x01\xfd\xf2"
+ "\x7d\x06\x29\x6d\x94\xd1\x66\xf0\xd2\x72\x67\x4e"
+ "\x77\xc5\x3d\x9e\x03\xe3\xa5\x78",
+ .addtlb = (unsigned char *)
+ "\xf6\xb6\x3d\xf0\x7c\x26\x04\xc5\x8b\xcd\x3e\x6a"
+ "\x9f\x9c\x3a\x2e\xdb\x47\x87\xe5\x8e\x00\x5e\x2b"
+ "\x74\x7f\xa6\xf6\x80\xcd\x9b\x21",
+ .addtllen = 32,
+ .pers = (unsigned char *)
+ "\x74\xa6\xe0\x08\xf9\x27\xee\x1d\x6e\x3c\x28\x20"
+ "\x87\xdd\xd7\x54\x31\x47\x78\x4b\xe5\x6d\xa3\x73"
+ "\xa9\x65\xb1\x10\xc1\xdc\x77\x7c",
+ .perslen = 32,
+ },
+};
+
+static struct drbg_testvec drbg_nopr_hmac_sha256_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\xca\x85\x19\x11\x34\x93\x84\xbf\xfe\x89\xde\x1c"
+ "\xbd\xc4\x6e\x68\x31\xe4\x4d\x34\xa4\xfb\x93\x5e"
+ "\xe2\x85\xdd\x14\xb7\x1a\x74\x88\x65\x9b\xa9\x6c"
+ "\x60\x1d\xc6\x9f\xc9\x02\x94\x08\x05\xec\x0c\xa8",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xe5\x28\xe9\xab\xf2\xde\xce\x54\xd4\x7c\x7e\x75"
+ "\xe5\xfe\x30\x21\x49\xf8\x17\xea\x9f\xb4\xbe\xe6"
+ "\xf4\x19\x96\x97\xd0\x4d\x5b\x89\xd5\x4f\xbb\x97"
+ "\x8a\x15\xb5\xc4\x43\xc9\xec\x21\x03\x6d\x24\x60"
+ "\xb6\xf7\x3e\xba\xd0\xdc\x2a\xba\x6e\x62\x4a\xbf"
+ "\x07\x74\x5b\xc1\x07\x69\x4b\xb7\x54\x7b\xb0\x99"
+ "\x5f\x70\xde\x25\xd6\xb2\x9e\x2d\x30\x11\xbb\x19"
+ "\xd2\x76\x76\xc0\x71\x62\xc8\xb5\xcc\xde\x06\x68"
+ "\x96\x1d\xf8\x68\x03\x48\x2c\xb3\x7e\xd6\xd5\xc0"
+ "\xbb\x8d\x50\xcf\x1f\x50\xd4\x76\xaa\x04\x58\xbd"
+ "\xab\xa8\x06\xf4\x8b\xe9\xdc\xb8",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\xf9\x7a\x3c\xfd\x91\xfa\xa0\x46\xb9\xe6\x1b\x94"
+ "\x93\xd4\x36\xc4\x93\x1f\x60\x4b\x22\xf1\x08\x15"
+ "\x21\xb3\x41\x91\x51\xe8\xff\x06\x11\xf3\xa7\xd4"
+ "\x35\x95\x35\x7d\x58\x12\x0b\xd1\xe2\xdd\x8a\xed",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xc6\x87\x1c\xff\x08\x24\xfe\x55\xea\x76\x89\xa5"
+ "\x22\x29\x88\x67\x30\x45\x0e\x5d\x36\x2d\xa5\xbf"
+ "\x59\x0d\xcf\x9a\xcd\x67\xfe\xd4\xcb\x32\x10\x7d"
+ "\xf5\xd0\x39\x69\xa6\x6b\x1f\x64\x94\xfd\xf5\xd6"
+ "\x3d\x5b\x4d\x0d\x34\xea\x73\x99\xa0\x7d\x01\x16"
+ "\x12\x6d\x0d\x51\x8c\x7c\x55\xba\x46\xe1\x2f\x62"
+ "\xef\xc8\xfe\x28\xa5\x1c\x9d\x42\x8e\x6d\x37\x1d"
+ "\x73\x97\xab\x31\x9f\xc7\x3d\xed\x47\x22\xe5\xb4"
+ "\xf3\x00\x04\x03\x2a\x61\x28\xdf\x5e\x74\x97\xec"
+ "\xf8\x2c\xa7\xb0\xa5\x0e\x86\x7e\xf6\x72\x8a\x4f"
+ "\x50\x9a\x8c\x85\x90\x87\x03\x9c",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x51\x72\x89\xaf\xe4\x44\xa0\xfe\x5e\xd1\xa4\x1d"
+ "\xbb\xb5\xeb\x17\x15\x00\x79\xbd\xd3\x1e\x29\xcf"
+ "\x2f\xf3\x00\x34\xd8\x26\x8e\x3b",
+ .addtlb = (unsigned char *)
+ "\x88\x02\x8d\x29\xef\x80\xb4\xe6\xf0\xfe\x12\xf9"
+ "\x1d\x74\x49\xfe\x75\x06\x26\x82\xe8\x9c\x57\x14"
+ "\x40\xc0\xc9\xb5\x2c\x42\xa6\xe0",
+ .addtllen = 32,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x8d\xf0\x13\xb4\xd1\x03\x52\x30\x73\x91\x7d\xdf"
+ "\x6a\x86\x97\x93\x05\x9e\x99\x43\xfc\x86\x54\x54"
+ "\x9e\x7a\xb2\x2f\x7c\x29\xf1\x22\xda\x26\x25\xaf"
+ "\x2d\xdd\x4a\xbc\xce\x3c\xf4\xfa\x46\x59\xd8\x4e",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xb9\x1c\xba\x4c\xc8\x4f\xa2\x5d\xf8\x61\x0b\x81"
+ "\xb6\x41\x40\x27\x68\xa2\x09\x72\x34\x93\x2e\x37"
+ "\xd5\x90\xb1\x15\x4c\xbd\x23\xf9\x74\x52\xe3\x10"
+ "\xe2\x91\xc4\x51\x46\x14\x7f\x0d\xa2\xd8\x17\x61"
+ "\xfe\x90\xfb\xa6\x4f\x94\x41\x9c\x0f\x66\x2b\x28"
+ "\xc1\xed\x94\xda\x48\x7b\xb7\xe7\x3e\xec\x79\x8f"
+ "\xbc\xf9\x81\xb7\x91\xd1\xbe\x4f\x17\x7a\x89\x07"
+ "\xaa\x3c\x40\x16\x43\xa5\xb6\x2b\x87\xb8\x9d\x66"
+ "\xb3\xa6\x0e\x40\xd4\xa8\xe4\xe9\xd8\x2a\xf6\xd2"
+ "\x70\x0e\x6f\x53\x5c\xdb\x51\xf7\x5c\x32\x17\x29"
+ "\x10\x37\x41\x03\x0c\xcc\x3a\x56",
+ .expectedlen = 128,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\xb5\x71\xe6\x6d\x7c\x33\x8b\xc0\x7b\x76\xad\x37"
+ "\x57\xbb\x2f\x94\x52\xbf\x7e\x07\x43\x7a\xe8\x58"
+ "\x1c\xe7\xbc\x7c\x3a\xc6\x51\xa9",
+ .perslen = 32,
+ }, {
+ .entropy = (unsigned char *)
+ "\xc2\xa5\x66\xa9\xa1\x81\x7b\x15\xc5\xc3\xb7\x78"
+ "\x17\x7a\xc8\x7c\x24\xe7\x97\xbe\x0a\x84\x5f\x11"
+ "\xc2\xfe\x39\x9d\xd3\x77\x32\xf2\xcb\x18\x94\xeb"
+ "\x2b\x97\xb3\xc5\x6e\x62\x83\x29\x51\x6f\x86\xec",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\xb3\xa3\x69\x8d\x77\x76\x99\xa0\xdd\x9f\xa3\xf0"
+ "\xa9\xfa\x57\x83\x2d\x3c\xef\xac\x5d\xf2\x44\x37"
+ "\xc6\xd7\x3a\x0f\xe4\x10\x40\xf1\x72\x90\x38\xae"
+ "\xf1\xe9\x26\x35\x2e\xa5\x9d\xe1\x20\xbf\xb7\xb0"
+ "\x73\x18\x3a\x34\x10\x6e\xfe\xd6\x27\x8f\xf8\xad"
+ "\x84\x4b\xa0\x44\x81\x15\xdf\xdd\xf3\x31\x9a\x82"
+ "\xde\x6b\xb1\x1d\x80\xbd\x87\x1a\x9a\xcd\x35\xc7"
+ "\x36\x45\xe1\x27\x0f\xb9\xfe\x4f\xa8\x8e\xc0\xe4"
+ "\x65\x40\x9e\xa0\xcb\xa8\x09\xfe\x2f\x45\xe0\x49"
+ "\x43\xa2\xe3\x96\xbb\xb7\xdd\x2f\x4e\x07\x95\x30"
+ "\x35\x24\xcc\x9c\xc5\xea\x54\xa1",
+ .expectedlen = 128,
+ .addtla = (unsigned char *)
+ "\x41\x3d\xd8\x3f\xe5\x68\x35\xab\xd4\x78\xcb\x96"
+ "\x93\xd6\x76\x35\x90\x1c\x40\x23\x9a\x26\x64\x62"
+ "\xd3\x13\x3b\x83\xe4\x9c\x82\x0b",
+ .addtlb = (unsigned char *)
+ "\xd5\xc4\xa7\x1f\x9d\x6d\x95\xa1\xbe\xdf\x0b\xd2"
+ "\x24\x7c\x27\x7d\x1f\x84\xa4\xe5\x7a\x4a\x88\x25"
+ "\xb8\x2a\x2d\x09\x7d\xe6\x3e\xf1",
+ .addtllen = 32,
+ .pers = (unsigned char *)
+ "\x13\xce\x4d\x8d\xd2\xdb\x97\x96\xf9\x41\x56\xc8"
+ "\xe8\xf0\x76\x9b\x0a\xa1\xc8\x2c\x13\x23\xb6\x15"
+ "\x36\x60\x3b\xca\x37\xc9\xee\x29",
+ .perslen = 32,
+ },
+};
+
+static struct drbg_testvec drbg_nopr_ctr_aes192_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\xc3\x5c\x2f\xa2\xa8\x9d\x52\xa1\x1f\xa3\x2a\xa9"
+ "\x6c\x95\xb8\xf1\xc9\xa8\xf9\xcb\x24\x5a\x8b\x40"
+ "\xf3\xa6\xe5\xa7\xfb\xd9\xd3\xc6\x8e\x27\x7b\xa9"
+ "\xac\x9b\xbb\x00",
+ .entropylen = 40,
+ .expected = (unsigned char *)
+ "\x8c\x2e\x72\xab\xfd\x9b\xb8\x28\x4d\xb7\x9e\x17"
+ "\xa4\x3a\x31\x46\xcd\x76\x94\xe3\x52\x49\xfc\x33"
+ "\x83\x91\x4a\x71\x17\xf4\x13\x68\xe6\xd4\xf1\x48"
+ "\xff\x49\xbf\x29\x07\x6b\x50\x15\xc5\x9f\x45\x79"
+ "\x45\x66\x2e\x3d\x35\x03\x84\x3f\x4a\xa5\xa3\xdf"
+ "\x9a\x9d\xf1\x0d",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ },
+};
+
+static struct drbg_testvec drbg_nopr_ctr_aes256_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\x36\x40\x19\x40\xfa\x8b\x1f\xba\x91\xa1\x66\x1f"
+ "\x21\x1d\x78\xa0\xb9\x38\x9a\x74\xe5\xbc\xcf\xec"
+ "\xe8\xd7\x66\xaf\x1a\x6d\x3b\x14\x49\x6f\x25\xb0"
+ "\xf1\x30\x1b\x4f\x50\x1b\xe3\x03\x80\xa1\x37\xeb",
+ .entropylen = 48,
+ .expected = (unsigned char *)
+ "\x58\x62\xeb\x38\xbd\x55\x8d\xd9\x78\xa6\x96\xe6"
+ "\xdf\x16\x47\x82\xdd\xd8\x87\xe7\xe9\xa6\xc9\xf3"
+ "\xf1\xfb\xaf\xb7\x89\x41\xb5\x35\xa6\x49\x12\xdf"
+ "\xd2\x24\xc6\xdc\x74\x54\xe5\x25\x0b\x3d\x97\x16"
+ "\x5e\x16\x26\x0c\x2f\xaf\x1c\xc7\x73\x5c\xb7\x5f"
+ "\xb4\xf0\x7e\x1d",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ },
+};
+
+static struct drbg_testvec drbg_nopr_ctr_aes128_tv_template[] = {
+ {
+ .entropy = (unsigned char *)
+ "\x87\xe1\xc5\x32\x99\x7f\x57\xa3\x5c\x28\x6d\xe8"
+ "\x64\xbf\xf2\x64\xa3\x9e\x98\xdb\x6c\x10\x78\x7f",
+ .entropylen = 24,
+ .expected = (unsigned char *)
+ "\x2c\x14\x7e\x24\x11\x9a\xd8\xd4\xb2\xed\x61\xc1"
+ "\x53\xd0\x50\xc9\x24\xff\x59\x75\x15\xf1\x17\x3a"
+ "\x3d\xf4\x4b\x2c\x84\x28\xef\x89\x0e\xb9\xde\xf3"
+ "\xe4\x78\x04\xb2\xfd\x9b\x35\x7f\xe1\x3f\x8a\x3e"
+ "\x10\xc8\x67\x0a\xf9\xdf\x2d\x6c\x96\xfb\xb2\xb8"
+ "\xcb\x2d\xd6\xb0",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\x71\xbd\xce\x35\x42\x7d\x20\xbf\x58\xcf\x17\x74"
+ "\xce\x72\xd8\x33\x34\x50\x2d\x8f\x5b\x14\xc4\xdd",
+ .entropylen = 24,
+ .expected = (unsigned char *)
+ "\x97\x33\xe8\x20\x12\xe2\x7b\xa1\x46\x8f\xf2\x34"
+ "\xb3\xc9\xb6\x6b\x20\xb2\x4f\xee\x27\xd8\x0b\x21"
+ "\x8c\xff\x63\x73\x69\x29\xfb\xf3\x85\xcd\x88\x8e"
+ "\x43\x2c\x71\x8b\xa2\x55\xd2\x0f\x1d\x7f\xe3\xe1"
+ "\x2a\xa3\xe9\x2c\x25\x89\xc7\x14\x52\x99\x56\xcc"
+ "\xc3\xdf\xb3\x81",
+ .expectedlen = 64,
+ .addtla = (unsigned char *)
+ "\x66\xef\x42\xd6\x9a\x8c\x3d\x6d\x4a\x9e\x95\xa6"
+ "\x91\x4d\x81\x56",
+ .addtlb = (unsigned char *)
+ "\xe3\x18\x83\xd9\x4b\x5e\xc4\xcc\xaa\x61\x2f\xbb"
+ "\x4a\x55\xd1\xc6",
+ .addtllen = 16,
+ .pers = NULL,
+ .perslen = 0,
+ }, {
+ .entropy = (unsigned char *)
+ "\xca\x4b\x1e\xfa\x75\xbd\x69\x36\x38\x73\xb8\xf9"
+ "\xdb\x4d\x35\x0e\x47\xbf\x6c\x37\x72\xfd\xf7\xa9",
+ .entropylen = 24,
+ .expected = (unsigned char *)
+ "\x59\xc3\x19\x79\x1b\xb1\xf3\x0e\xe9\x34\xae\x6e"
+ "\x8b\x1f\xad\x1f\x74\xca\x25\x45\x68\xb8\x7f\x75"
+ "\x12\xf8\xf2\xab\x4c\x23\x01\x03\x05\xe1\x70\xee"
+ "\x75\xd8\xcb\xeb\x23\x4c\x7a\x23\x6e\x12\x27\xdb"
+ "\x6f\x7a\xac\x3c\x44\xb7\x87\x4b\x65\x56\x74\x45"
+ "\x34\x30\x0c\x3d",
+ .expectedlen = 64,
+ .addtla = NULL,
+ .addtlb = NULL,
+ .addtllen = 0,
+ .pers = (unsigned char *)
+ "\xeb\xaa\x60\x2c\x4d\xbe\x33\xff\x1b\xef\xbf\x0a"
+ "\x0b\xc6\x97\x54",
+ .perslen = 16,
+ }, {
+ .entropy = (unsigned char *)
+ "\xc0\x70\x1f\x92\x50\x75\x8f\xcd\xf2\xbe\x73\x98"
+ "\x80\xdb\x66\xeb\x14\x68\xb4\xa5\x87\x9c\x2d\xa6",
+ .entropylen = 24,
+ .expected = (unsigned char *)
+ "\x97\xc0\xc0\xe5\xa0\xcc\xf2\x4f\x33\x63\x48\x8a"
+ "\xdb\x13\x0a\x35\x89\xbf\x80\x65\x62\xee\x13\x95"
+ "\x7c\x33\xd3\x7d\xf4\x07\x77\x7a\x2b\x65\x0b\x5f"
+ "\x45\x5c\x13\xf1\x90\x77\x7f\xc5\x04\x3f\xcc\x1a"
+ "\x38\xf8\xcd\x1b\xbb\xd5\x57\xd1\x4a\x4c\x2e\x8a"
+ "\x2b\x49\x1e\x5c",
+ .expectedlen = 64,
+ .addtla = (unsigned char *)
+ "\xf9\x01\xf8\x16\x7a\x1d\xff\xde\x8e\x3c\x83\xe2"
+ "\x44\x85\xe7\xfe",
+ .addtlb = (unsigned char *)
+ "\x17\x1c\x09\x38\xc2\x38\x9f\x97\x87\x60\x55\xb4"
+ "\x82\x16\x62\x7f",
+ .addtllen = 16,
+ .pers = (unsigned char *)
+ "\x80\x08\xae\xe8\xe9\x69\x40\xc5\x08\x73\xc7\x9f"
+ "\x8e\xcf\xe0\x02",
+ .perslen = 16,
+ },
+};
+
/* Cast5 test vectors from RFC 2144 */
#define CAST5_ENC_TEST_VECTORS 4
#define CAST5_DEC_TEST_VECTORS 4
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 6/7] Add DRBG test code to testmgr
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
` (4 preceding siblings ...)
2014-05-26 11:29 ` [PATCH v8 5/7] DRBG testmgr test vectors Stephan Mueller
@ 2014-05-26 11:29 ` Stephan Mueller
2014-05-26 11:30 ` [PATCH v8 7/7] Add documentation of drbg.stdrng Stephan Mueller
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:29 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
lThe DRBG test code implements the CAVS test approach.
As discussed for the test vectors, all DRBG types are covered with
testing. However, not every backend cipher is covered with testing. To
prevent the testmgr from logging missing testing, the NULL test is
registered for all backend ciphers not covered with specific test cases.
All currently implemented DRBG types and backend ciphers are defined
in SP800-90A. Therefore, the fips_allowed flag is set for all.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
crypto/testmgr.c | 247 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 247 insertions(+)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index dc3cf35..4b1f512 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <crypto/rng.h>
+#include <crypto/drbg.h>
#include "internal.h"
@@ -108,6 +109,11 @@ struct cprng_test_suite {
unsigned int count;
};
+struct drbg_test_suite {
+ struct drbg_testvec *vecs;
+ unsigned int count;
+};
+
struct alg_test_desc {
const char *alg;
int (*test)(const struct alg_test_desc *desc, const char *driver,
@@ -121,6 +127,7 @@ struct alg_test_desc {
struct pcomp_test_suite pcomp;
struct hash_test_suite hash;
struct cprng_test_suite cprng;
+ struct drbg_test_suite drbg;
} suite;
};
@@ -1712,6 +1719,100 @@ static int alg_test_cprng(const struct alg_test_desc *desc, const char *driver,
return err;
}
+
+static int drbg_cavs_test(struct drbg_testvec *test, int pr,
+ const char *driver, u32 type, u32 mask)
+{
+ int ret = -EAGAIN;
+ struct crypto_rng *drng;
+ struct drbg_test_data test_data;
+ struct drbg_string addtl, pers, testentropy;
+ unsigned char *buf = kzalloc(test->expectedlen, GFP_KERNEL);
+
+ if (!buf)
+ return -ENOMEM;
+
+ drng = crypto_alloc_rng(driver, type, mask);
+ if (IS_ERR(drng)) {
+ printk(KERN_ERR "alg: drbg: could not allocate DRNG handle for"
+ "%s\n", driver);
+ kzfree(buf);
+ return -ENOMEM;
+ }
+
+ test_data.testentropy = &testentropy;
+ drbg_string_fill(&testentropy, test->entropy, test->entropylen);
+ drbg_string_fill(&pers, test->pers, test->perslen);
+ ret = crypto_drbg_reset_test(drng, &pers, &test_data);
+ if (ret) {
+ printk(KERN_ERR "alg: drbg: Failed to reset rng\n");
+ goto outbuf;
+ }
+
+ drbg_string_fill(&addtl, test->addtla, test->addtllen);
+ if (pr) {
+ drbg_string_fill(&testentropy, test->entpra, test->entprlen);
+ ret = crypto_drbg_get_bytes_addtl_test(drng,
+ buf, test->expectedlen, &addtl, &test_data);
+ } else {
+ ret = crypto_drbg_get_bytes_addtl(drng,
+ buf, test->expectedlen, &addtl);
+ }
+ if (ret <= 0) {
+ printk(KERN_ERR "alg: drbg: could not obtain random data for"
+ "driver %s\n", driver);
+ goto outbuf;
+ }
+
+ drbg_string_fill(&addtl, test->addtlb, test->addtllen);
+ if (pr) {
+ drbg_string_fill(&testentropy, test->entprb, test->entprlen);
+ ret = crypto_drbg_get_bytes_addtl_test(drng,
+ buf, test->expectedlen, &addtl, &test_data);
+ } else {
+ ret = crypto_drbg_get_bytes_addtl(drng,
+ buf, test->expectedlen, &addtl);
+ }
+ if (ret <= 0) {
+ printk(KERN_ERR "alg: drbg: could not obtain random data for"
+ "driver %s\n", driver);
+ goto outbuf;
+ }
+
+ ret = memcmp(test->expected, buf, test->expectedlen);
+
+outbuf:
+ crypto_free_rng(drng);
+ kzfree(buf);
+ return ret;
+}
+
+
+static int alg_test_drbg(const struct alg_test_desc *desc, const char *driver,
+ u32 type, u32 mask)
+{
+ int err = 0;
+ int pr = 0;
+ int i = 0;
+ struct drbg_testvec *template = desc->suite.drbg.vecs;
+ unsigned int tcount = desc->suite.drbg.count;
+
+ if (0 == memcmp(driver, "drbg_pr_", 8))
+ pr = 1;
+
+ for (i = 0; i < tcount; i++) {
+ err = drbg_cavs_test(&template[i], pr, driver, type, mask);
+ if (err) {
+ printk(KERN_ERR "alg: drbg: Test %d failed for %s\n",
+ i, driver);
+ err = -EINVAL;
+ break;
+ }
+ }
+ return err;
+
+}
+
static int alg_test_null(const struct alg_test_desc *desc,
const char *driver, u32 type, u32 mask)
{
@@ -2305,6 +2406,152 @@ static const struct alg_test_desc alg_test_descs[] = {
.alg = "digest_null",
.test = alg_test_null,
}, {
+ .alg = "drbg_nopr_ctr_aes128",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_nopr_ctr_aes128_tv_template,
+ .count = ARRAY_SIZE(drbg_nopr_ctr_aes128_tv_template)
+ }
+ }
+ }, {
+ .alg = "drbg_nopr_ctr_aes192",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_nopr_ctr_aes192_tv_template,
+ .count = ARRAY_SIZE(drbg_nopr_ctr_aes192_tv_template)
+ }
+ }
+ }, {
+ .alg = "drbg_nopr_ctr_aes256",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_nopr_ctr_aes256_tv_template,
+ .count = ARRAY_SIZE(drbg_nopr_ctr_aes256_tv_template)
+ }
+ }
+ }, {
+ /*
+ * There is no need to specifically test the DRBG with every
+ * backend cipher -- covered by drbg_nopr_hmac_sha256 test
+ */
+ .alg = "drbg_nopr_hmac_sha1",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_nopr_hmac_sha256",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_nopr_hmac_sha256_tv_template,
+ .count =
+ ARRAY_SIZE(drbg_nopr_hmac_sha256_tv_template)
+ }
+ }
+ }, {
+ /* covered by drbg_nopr_hmac_sha256 test */
+ .alg = "drbg_nopr_hmac_sha384",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_nopr_hmac_sha512",
+ .test = alg_test_null,
+ .fips_allowed = 1,
+ }, {
+ .alg = "drbg_nopr_sha1",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_nopr_sha256",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_nopr_sha256_tv_template,
+ .count = ARRAY_SIZE(drbg_nopr_sha256_tv_template)
+ }
+ }
+ }, {
+ /* covered by drbg_nopr_sha256 test */
+ .alg = "drbg_nopr_sha384",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_nopr_sha512",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_ctr_aes128",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_pr_ctr_aes128_tv_template,
+ .count = ARRAY_SIZE(drbg_pr_ctr_aes128_tv_template)
+ }
+ }
+ }, {
+ /* covered by drbg_pr_ctr_aes128 test */
+ .alg = "drbg_pr_ctr_aes192",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_ctr_aes256",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_hmac_sha1",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_hmac_sha256",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_pr_hmac_sha256_tv_template,
+ .count = ARRAY_SIZE(drbg_pr_hmac_sha256_tv_template)
+ }
+ }
+ }, {
+ /* covered by drbg_pr_hmac_sha256 test */
+ .alg = "drbg_pr_hmac_sha384",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_hmac_sha512",
+ .test = alg_test_null,
+ .fips_allowed = 1,
+ }, {
+ .alg = "drbg_pr_sha1",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_sha256",
+ .test = alg_test_drbg,
+ .fips_allowed = 1,
+ .suite = {
+ .drbg = {
+ .vecs = drbg_pr_sha256_tv_template,
+ .count = ARRAY_SIZE(drbg_pr_sha256_tv_template)
+ }
+ }
+ }, {
+ /* covered by drbg_pr_sha256 test */
+ .alg = "drbg_pr_sha384",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
+ .alg = "drbg_pr_sha512",
+ .fips_allowed = 1,
+ .test = alg_test_null,
+ }, {
.alg = "ecb(__aes-aesni)",
.test = alg_test_null,
.fips_allowed = 1,
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v8 7/7] Add documentation of drbg.stdrng
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
` (5 preceding siblings ...)
2014-05-26 11:29 ` [PATCH v8 6/7] Add DRBG test code to testmgr Stephan Mueller
@ 2014-05-26 11:30 ` Stephan Mueller
6 siblings, 0 replies; 8+ messages in thread
From: Stephan Mueller @ 2014-05-26 11:30 UTC (permalink / raw)
To: linux-kernel, linux-crypto
Cc: herbert, aquini, jeremy.wayne.powell, clemens, pwalten, joe
The drbg.stdrng kernel command line flag allows the selection of the
DRBG used as stdrng.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
Documentation/kernel-parameters.txt | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 30a8ad0d..b970ba2 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -855,6 +855,16 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
The filter can be disabled or changed to another
driver later using sysfs.
+ drbg.stdrng=<name>
+ Kernel crypto API name of the SP800-90A DRBG that
+ is marked as "stdrng". Parts of the kernel requiring
+ random numbers may use the "stdrng" random number
+ generator. In FIPS mode (when the kernel command line
+ parameter fips=1 is provided), the priority of the
+ DRBG stdrng is increased to be higher than other
+ stdrng definitions. This implies, the DRBG is used as
+ default in FIPS mode.
+
drm_kms_helper.edid_firmware=[<connector>:]<file>
Broken monitors, graphic adapters and KVMs may
send no or incorrect EDID data sets. This parameter
--
1.9.3
^ permalink raw reply related [flat|nested] 8+ messages in thread
end of thread, other threads:[~2014-05-26 11:38 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-05-26 11:25 [PATCH v8 0/7] SP800-90A Deterministic Random Bit Generator Stephan Mueller
2014-05-26 11:26 ` [PATCH v8 1/7] " Stephan Mueller
2014-05-26 11:27 ` [PATCH v8 2/7] header file for DRBG Stephan Mueller
2014-05-26 11:27 ` [PATCH v8 3/7] DRBG kernel configuration options Stephan Mueller
2014-05-26 11:28 ` [PATCH v8 4/7] compile the DRBG code Stephan Mueller
2014-05-26 11:29 ` [PATCH v8 5/7] DRBG testmgr test vectors Stephan Mueller
2014-05-26 11:29 ` [PATCH v8 6/7] Add DRBG test code to testmgr Stephan Mueller
2014-05-26 11:30 ` [PATCH v8 7/7] Add documentation of drbg.stdrng Stephan Mueller
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).