Previously, vb2_unpack_key() actually unpacked a key buffer. Callers
that had a vb2_packed_key had to typecast it back to a uint8_t buffer to
unpack it. Rename vb2_unpack_key() to vb2_unpack_key_buffer(), and make
vb2_unpack_key() unpack a vb2_packed_key.
BUG=chromium:611535
BRANCH=none
TEST=make runtests; emerge-kevin coreboot depthcharge;
emerge-samus and boot it
Change-Id: I9ee38a819c59cc58a72ead78cf5ddf3d0f301ae7
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/400906
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This allows the caller to load the kernel partition and then pass it
to vboot for verification, rather than having vboot assume the kernel
partitions are all on a block storage device.
Next up, APIs for the caller to parse partition information from a GPT
(yes, that's cgptlib, but we'll make it more easily callable by
depthcharge).
BUG=chromium:487699
BRANCH=none
TEST=make -j runtests
Change-Id: I388085c7023f4c76d416f37df0607019bea844ac
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/275646
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
These are slightly more complex than the firmware versions, because
they need to deal with developer-signed keyblocks and keyblock flags.
BUG=chromium:487699
BRANCH=none
TEST=make -j runtests
Change-Id: I682c14ddfe729984f2629dfbe66750e5cd5ab75e
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/272541
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This is necessary for the next change, which adds keyblock hash checking.
Also clean up some other assorted comments, and move the diagnostic
check of root key to see if it's the checked-in one earlier in
firmware preamble validation so it's closer to where the root key is
loaded.
No functional or higher-level API changes; just shuffling around code
under the covers.
BUG=chromium:487699
BRANCH=none
TEST=make -j runtests
Change-Id: Ibc3960a4d882dc2ad8684e235db4b9d066eac080
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/272223
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This also checks that the bootloader and vmlinuz headers, if present,
are within the signed part of the kernel blob; the vboot1 routines
didn't do that. That wasn't harmful at firmware boot time because the
vboot1 routines would only load as much data as was signed, but in
vboot2 loading the kernel data is the responsibility of the caller so
we need to check.
BUG=chromium:487699
BRANCH=none
TEST=make -j runtests
Change-Id: I73eb4831e5d3d7a642b6cb85cb55857d87fcc0af
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/270797
This patch extends the vboot2 API by three callback functions that the
platform firmware may implement to offer hardware crypto engine support.
For now we only support this for hash algorithms, and we will only allow
it for firmware body hashes (not the keyblock or preamble which are too
small to matter execution-time-wise anyway). The API is similar to the
vb2api_*_hash() functions used to start body hashing in the first place,
but we still take this round trip through vboot to allow it to do
key/signature management and retain full control of the verification
process. We also add a new preamble flag to explicitly disable this
feature, so that we can later return to a solely software-based
verification path through a firmware update in case a hardware crypto
engine turns out to be insecure.
CQ-DEPEND=CL:236435
BRANCH=None
BUG=chrome-os-partner:32987
TEST='make runtests VBOOT2=1'. Manually booted on Pinky with and without
HW crypto support and with the preamble flag set to confirm expected
behavior. lib21/ parts untested except for compiling and new unit tests.
Change-Id: I17c7d02f392089875a5942a5aafcf6a657354863
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/236453
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This is part 4 of a series of changes to rearrange the vboot2 library
so that it's possible to start using the new-style data structs. This
change moves knowledge of the old vboot1 data structs into lib20; 2lib
now contains only code which is common to both vboot2.x libraries
(that is, code which is data structure version agnostic).
No functional changes; just rearranging code and tests.
BUG=chromium:423882
BRANCH=none
TEST=make runtests && VBOOT2=1 make runtests (works with/withoug VBOOT2 flag)
And compile firmware for veyron_pinky
CQ-DEPEND=CL:233051
Change-Id: I8f9e67157575e5be14952ef4809c3dfafd92596d
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/233021
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
