Another in a long series of refactoring changes to replace old vboot1
code with its vboot2 equivalent. Futility changes only; no change to
firmware.
BUG=chromium:611535
BRANCH=none
TEST=make runtests
Change-Id: I7be813b82820674e975db13d5e540e49bdea028d
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/366057
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This refactors futility and the host library to use only vboot 2.0 APIs
to create and verify keyblocks.
BUG=chromium:611535
BRANCH=none
TEST=make runtests
Change-Id: Ia3cc1e24971b94f01bcb4890c8666a3af6f84841
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/356129
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This replaces all calls to vboot1 VerifyFirmwarePreamble() with
equivalent vb2.0 functions. No effect on ToT firmware, which already
uses the vboot2.0 functions.
BUG=chromium:611535
BRANCH=none
TEST=make runtests
Change-Id: I5c84e9ed0e0c75e2ea8dbd9bfcde0597bc457f24
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/349322
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Futility needs to link against both vboot1/vboot2.0 and vboot2.1
functions. This was easy in the past because it did (vboot1 +
vboot2.1) and there's no overlap.
In replacing vboot1 function calls and structs with vboot2.0, now there
are symbol collisions between vboot2.0 and vboot2.1. For example, both
of them use a struct called vb2_signature, but the structs are defined
differently. Functions which operate on those structs also overload.
Rename the vb2.1 structs to start with vb21_ instead of vb2_. Do the
same for vb2.1 functions which operate on vb2.1 data.
BUG=chromium:611535
BRANCH=none
TEST=make runtests
Change-Id: I24defd87cbd9ef64239faf1a8e98ab2372d27539
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/347458
Reviewed-by: Daisuke Nojiri <dnojiri@google.com>
The "rwsig" type is used for independent device firmware (not
Chromebook BIOS) that need to verify themselves instead of using
software sync.
The expected use case is that a RO firmware contains a
vb2_public_key struct along with an FMAP or other pointers to a
slot for RW firmware. The RW firmware slot reserves room for a
vb2_signature struct.
This CL changes the args and behavior of the rwsig type, so that
the RW firmware can be [re]signed independently of the rest of
the image.
BUG=chrome-os-partner:46254
BRANCH=smaug,ToT
TEST=make runtests, manual
Create a keypair:
futility create --desc "Key One" tests/testkeys/key_rsa2048.pem foo
Sign a RW binary and build a complete image out of the parts:
futility sign --type rwsig --prikey foo.vbprik2 rw.bin sig.bin
dd if=/dev/zero bs=65536 count=1 of=image.bin
dd if=rw.bin of=image.bin conv=notrunc
dd if=sig.bin bs=$((65536 - 1024)) seek=1 of=image.bin conv=notrunc
Verify both the separate parts and the combined image:
futility show --type rwsig --pubkey foo.vbpubk2 rw.bin sig.bin
futility show --type rwsig --pubkey foo.vbpubk2 image.bin
Re-sign the combined image with a different keypair:
futility create --desc "Key Two" tests/testkeys/key_rsa1024.pem bar
futility sign --type rwsig --prikey bar.vbprik2 image.bin
Now the first key no longer verifies:
futility show --type rwsig --pubkey foo.vbpubk2 image.bin
But the second key does:
futility show --type rwsig --pubkey bar.vbpubk2 image.bin
Change-Id: Ifdddab08f218f506eb1dce28851b153d70140a7b
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/305980
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This adds the "rwsig" type, with initial support for RO+RW
firmware images that need to verify themselves instead of using
software sync. This uses our vb2 structs instead of raw binary
blobs. That will help us locate, identify, and verify the keys
and signatures in the signed firmware images.
BUG=chrome-os-partner:46254
BRANCH=smaug,ToT
TEST=make runtests
I also hacked up a test board with the EC-side signature
verification routines from a preliminary CL and tested this
signing scheme with that. It works.
Additional work is needed to make this seamless, but you can try
it out like so:
futility create ./tests/testkeys/key_rsa2048.pem foo
futility sign --type rwsig --prikey foo.vbprik2 --pubkey foo.vbpubk2 ec.bin
Change-Id: I876ab312a2b0b36411c5f739fe3252529728d034
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/305394
Reviewed-by: Randall Spangler <rspangler@chromium.org>
The USB Type-C chargers released with Samus ("Pixel (2015)") have
upgradable firmware. Those firmware images are currently signed
by some custom scripts. This adds support for those images to
futility, so that those custom scripts can be replaced.
Note that due to space considerations, the usbpd firmware images
don't have room for handy things like an FMAP or headers for the
signatures. Accordingly, all the normally variable factors (image
size, signature algorithms, etc.) are hard coded and the image
itself just looks like a bunch of random numbers. Because of
this:
1. There's no way to recognize this type of file, and nothing to
display about it.
2. You have to give the "--type usbpd1" arg to the sign command.
3. I'm designating this file type "v1" because I hope that the
firmware for any future adapters will be more readily
identifiable.
BUG=chromium:231574
BRANCH=none
TEST=make runtests
This adds a new test that signs usbpd1 firmware images using
futility, and compares the result to the same files signed by the
custom scripts, ensuring that they are bitwise identical.
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Change-Id: Idbe061db5b3c8e474ada47b40bcbe04bbecdba3a
Reviewed-on: https://chromium-review.googlesource.com/262899
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This declares the options for the sign and show commands in a
header file.
We want to split the code for logically separate file types into
separate source files, but we don't want to have multiple
option-parsing routines, so that we can be sure we're using the
same option names consistently (for example, --hash_alg always
takes the same args and means the same thing).
BUG=chromium:231574
BRANCH=none
TEST=make runtests
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Change-Id: I939bd19ba199b4c44eb41cff3571cff88df9a181
Reviewed-on: https://chromium-review.googlesource.com/262896
Reviewed-by: Randall Spangler <rspangler@chromium.org>
