Re: [PATCH v8 2/4] KEYS: trusted: Introduce TEE based Trusted Keys

From: Jerome Forissier <jerome@forissier.org>
To: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Sumit Garg <sumit.garg@linaro.org>,
	"open list:SECURITY SUBSYSTEM" 
	<linux-security-module@vger.kernel.org>,
	Daniel Thompson <daniel.thompson@linaro.org>,
	op-tee@lists.trustedfirmware.org,
	Jonathan Corbet <corbet@lwn.net>,
	James Bottomley <jejb@linux.ibm.com>,
	Janne Karhunen <janne.karhunen@gmail.com>,
	Linux Doc Mailing List <linux-doc@vger.kernel.org>,
	James Morris <jmorris@namei.org>,
	Mimi Zohar <zohar@linux.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	David Howells <dhowells@redhat.com>,
	Luke Hinds <lhinds@redhat.com>,
	"open list:ASYMMETRIC KEYS" <keyrings@vger.kernel.org>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	Casey Schaufler <casey@schaufler-ca.com>,
	linux-integrity@vger.kernel.org,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	"Serge E. Hallyn" <serge@hallyn.com>
Subject: Re: [PATCH v8 2/4] KEYS: trusted: Introduce TEE based Trusted Keys
Date: Thu, 21 Jan 2021 17:23:45 +0100	[thread overview]
Message-ID: <1486cfe8-bc30-1266-12bd-0049f2b64820@forissier.org> (raw)
In-Reply-To: <YAmcyKnYCK+Y4IGW@kernel.org>

On 1/21/21 4:24 PM, Jarkko Sakkinen wrote:
> On Thu, Jan 21, 2021 at 05:07:42PM +0200, Jarkko Sakkinen wrote:
>> On Thu, Jan 21, 2021 at 09:44:07AM +0100, Jerome Forissier wrote:
>>>
>>>
>>> On 1/21/21 1:02 AM, Jarkko Sakkinen via OP-TEE wrote:
>>>> On Wed, Jan 20, 2021 at 12:53:28PM +0530, Sumit Garg wrote:
>>>>> On Wed, 20 Jan 2021 at 07:01, Jarkko Sakkinen <jarkko@kernel.org> wrote:
>>>>>>
>>>>>> On Tue, Jan 19, 2021 at 12:30:42PM +0200, Jarkko Sakkinen wrote:
>>>>>>> On Fri, Jan 15, 2021 at 11:32:31AM +0530, Sumit Garg wrote:
>>>>>>>> On Thu, 14 Jan 2021 at 07:35, Jarkko Sakkinen <jarkko@kernel.org> wrote:
>>>>>>>>>
>>>>>>>>> On Wed, Jan 13, 2021 at 04:47:00PM +0530, Sumit Garg wrote:
>>>>>>>>>> Hi Jarkko,
>>>>>>>>>>
>>>>>>>>>> On Mon, 11 Jan 2021 at 22:05, Jarkko Sakkinen <jarkko@kernel.org> wrote:
>>>>>>>>>>>
>>>>>>>>>>> On Tue, Nov 03, 2020 at 09:31:44PM +0530, Sumit Garg wrote:
>>>>>>>>>>>> Add support for TEE based trusted keys where TEE provides the functionality
>>>>>>>>>>>> to seal and unseal trusted keys using hardware unique key.
>>>>>>>>>>>>
>>>>>>>>>>>> Refer to Documentation/tee.txt for detailed information about TEE.
>>>>>>>>>>>>
>>>>>>>>>>>> Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
>>>>>>>>>>>
>>>>>>>>>>> I haven't yet got QEMU environment working with aarch64, this produces
>>>>>>>>>>> just a blank screen:
>>>>>>>>>>>
>>>>>>>>>>> ./output/host/usr/bin/qemu-system-aarch64 -M virt -cpu cortex-a53 -smp 1 -kernel output/images/Image -initrd output/images/rootfs.cpio -serial stdio
>>>>>>>>>>>
>>>>>>>>>>> My BuildRoot fork for TPM and keyring testing is located over here:
>>>>>>>>>>>
>>>>>>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/buildroot-tpmdd.git/
>>>>>>>>>>>
>>>>>>>>>>> The "ARM version" is at this point in aarch64 branch. Over time I will
>>>>>>>>>>> define tpmdd-x86_64 and tpmdd-aarch64 boards and everything will be then
>>>>>>>>>>> in the master branch.
>>>>>>>>>>>
>>>>>>>>>>> To create identical images you just need to
>>>>>>>>>>>
>>>>>>>>>>> $ make tpmdd_defconfig && make
>>>>>>>>>>>
>>>>>>>>>>> Can you check if you see anything obviously wrong? I'm eager to test this
>>>>>>>>>>> patch set, and in bigger picture I really need to have ready to run
>>>>>>>>>>> aarch64 environment available.
>>>>>>>>>>
>>>>>>>>>> I would rather suggest you to follow steps listed here [1] as to test
>>>>>>>>>> this feature on Qemu aarch64 we need to build firmwares such as TF-A,
>>>>>>>>>> OP-TEE, UEFI etc. which are all integrated into OP-TEE Qemu build
>>>>>>>>>> system [2]. And then it would be easier to migrate them to your
>>>>>>>>>> buildroot environment as well.
>>>>>>>>>>
>>>>>>>>>> [1] https://lists.trustedfirmware.org/pipermail/op-tee/2020-May/000027.html
>>>>>>>>>> [2] https://optee.readthedocs.io/en/latest/building/devices/qemu.html#qemu-v8
>>>>>>>>>>
>>>>>>>>>> -Sumit
>>>>>>>>>
>>>>>>>>> Can you provide 'keyctl_change'? Otherwise, the steps are easy to follow.
>>>>>>>>>
>>>>>>>>
>>>>>>>> $ cat keyctl_change
>>>>>>>> diff --git a/common.mk b/common.mk
>>>>>>>> index aeb7b41..663e528 100644
>>>>>>>> --- a/common.mk
>>>>>>>> +++ b/common.mk
>>>>>>>> @@ -229,6 +229,7 @@ BR2_PACKAGE_OPTEE_TEST_SDK ?= $(OPTEE_OS_TA_DEV_KIT_DIR)
>>>>>>>>  BR2_PACKAGE_OPTEE_TEST_SITE ?= $(OPTEE_TEST_PATH)
>>>>>>>>  BR2_PACKAGE_STRACE ?= y
>>>>>>>>  BR2_TARGET_GENERIC_GETTY_PORT ?= $(if
>>>>>>>> $(CFG_NW_CONSOLE_UART),ttyAMA$(CFG_NW_CONSOLE_UART),ttyAMA0)
>>>>>>>> +BR2_PACKAGE_KEYUTILS := y
>>>>>>>>
>>>>>>>>  # All BR2_* variables from the makefile or the environment are appended to
>>>>>>>>  # ../out-br/extra.conf. All values are quoted "..." except y and n.
>>>>>>>> diff --git a/kconfigs/qemu.conf b/kconfigs/qemu.conf
>>>>>>>> index 368c18a..832ab74 100644
>>>>>>>> --- a/kconfigs/qemu.conf
>>>>>>>> +++ b/kconfigs/qemu.conf
>>>>>>>> @@ -20,3 +20,5 @@ CONFIG_9P_FS=y
>>>>>>>>  CONFIG_9P_FS_POSIX_ACL=y
>>>>>>>>  CONFIG_HW_RANDOM=y
>>>>>>>>  CONFIG_HW_RANDOM_VIRTIO=y
>>>>>>>> +CONFIG_TRUSTED_KEYS=y
>>>>>>>> +CONFIG_ENCRYPTED_KEYS=y
>>>>>>>>
>>>>>>>>> After I've successfully tested 2/4, I'd suggest that you roll out one more
>>>>>>>>> version and CC the documentation patch to Elaine and Mini, and clearly
>>>>>>>>> remark in the commit message that TEE is a standard, with a link to the
>>>>>>>>> specification.
>>>>>>>>>
>>>>>>>>
>>>>>>>> Sure, I will roll out the next version after your testing.
>>>>>>>
>>>>>>> Thanks, I'll try this at instant, and give my feedback.
>>>>>>
>>>>>> I bump into this:
>>>>>>
>>>>>> $ make run-only
>>>>>> ln -sf /home/jarkko/devel/tpm/optee/build/../out-br/images/rootfs.cpio.gz /home/jarkko/devel/tpm/optee/build/../out/bin/
>>>>>> ln: failed to create symbolic link '/home/jarkko/devel/tpm/optee/build/../out/bin/': No such file or directory
>>>>>> make: *** [Makefile:194: run-only] Error 1
>>>>>>
>>>>>
>>>>> Could you check if the following directory tree is built after
>>>>> executing the below command?
>>>>>
>>>>> $ make -j`nproc`
>>>>> CFG_IN_TREE_EARLY_TAS=trusted_keys/f04a0fe7-1f5d-4b9b-abf7-619b85b4ce8c
>>>>>
>>>>> $ tree out/bin/
>>>>> out/bin/
>>>>> ├── bl1.bin -> /home/sumit/build/optee/build/../trusted-firmware-a/build/qemu/release/bl1.bin
>>>>> ├── bl2.bin -> /home/sumit/build/optee/build/../trusted-firmware-a/build/qemu/release/bl2.bin
>>>>> ├── bl31.bin ->
>>>>> /home/sumit/build/optee/build/../trusted-firmware-a/build/qemu/release/bl31.bin
>>>>> ├── bl32.bin ->
>>>>> /home/sumit/build/optee/build/../optee_os/out/arm/core/tee-header_v2.bin
>>>>> ├── bl32_extra1.bin ->
>>>>> /home/sumit/build/optee/build/../optee_os/out/arm/core/tee-pager_v2.bin
>>>>> ├── bl32_extra2.bin ->
>>>>> /home/sumit/build/optee/build/../optee_os/out/arm/core/tee-pageable_v2.bin
>>>>> ├── bl33.bin ->
>>>>> /home/sumit/build/optee/build/../edk2/Build/ArmVirtQemuKernel-AARCH64/RELEASE_GCC49/FV/QEMU_EFI.fd
>>>>> ├── Image -> /home/sumit/build/optee/build/../linux/arch/arm64/boot/Image
>>>>> └── rootfs.cpio.gz ->
>>>>> /home/sumit/build/optee/build/../out-br/images/rootfs.cpio.gz
>>>>>
>>>>> 0 directories, 9 files
>>>>>
>>>>> -Sumit
>>>>
>>>> I actually spotted a build error that was unnoticed last time:
>>>>
>>>> make[2]: Entering directory '/home/jarkko/devel/tpm/optee/edk2/BaseTools/Tests'
>>>> /bin/sh: 1: python: not found
>>>>
>>>> I'd prefer not to install Python2. It has been EOL over a year.
>>>
>>> AFAIK, everything should build fine with Python3. On my Ubuntu 20.04
>>> machine, this is accomplished by installing package "python-is-python3"
>>> (after uninstalling "python-is-python2" if need be).
>>>
>>> $ ls -l /usr/bin/python
>>> lrwxrwxrwx 1 root root 7 Apr 15  2020 /usr/bin/python -> python3
>>
>> Right, just found about this in unrelated context :-) [*]
>>
>> Hope this will work out...
>>
>> [*] https://github.com/surge-synthesizer/surge/pull/3655
> 
> Now I get
> 
> Traceback (most recent call last):
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/RunTests.py", line 36, in <module>
>     allTests = GetAllTestsSuite()
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/RunTests.py", line 33, in GetAllTestsSuite
>     return unittest.TestSuite([GetCTestSuite(), GetPythonTestSuite()])
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/RunTests.py", line 25, in GetCTestSuite
>     import CToolsTests
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/CToolsTests.py", line 22, in <module>
>     import TianoCompress
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/TianoCompress.py", line 69, in <module>
>     TheTestSuite = TestTools.MakeTheTestSuite(locals())
>   File "/home/jarkko/Projects/tpm/optee/edk2/BaseTools/Tests/TestTools.py", line 43, in MakeTheTestSuite
>     for name, item in localItems.iteritems():
> AttributeError: 'dict' object has no attribute 'iteritems'

Right. Same here after removing all traces of Python2 from my system :-/

A couple of fixes are needed:
1. EDK2 needs to be upgraded to tag or later [1]
2. The PYTHON3_ENABLE environment variable needs to be set to TRUE [2]

[1] https://github.com/OP-TEE/manifest/pull/177
[2] https://github.com/OP-TEE/build/pull/450

HTH,
-- 
Jerome