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

    /Jarkko

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