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| author | Tudor Brindus <tbrindus@google.com> | 2018-08-02 16:36:19 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-08-08 20:46:12 -0700 |
| commit | 4a0352935ead9820955d39ac7b28396f8bd37271 (patch) | |
| tree | bd9653e48b73a1a85c1ddfa185b4114556534899 | |
| parent | 935d60e8374f0d73123a5dedf0f1c144c3249820 (diff) | |
| download | vboot-4a0352935ead9820955d39ac7b28396f8bd37271.tar.gz | |
vboot_reference: Change OOBE autoconfig TPM space to storing 32-byte hash
This commit switches from claiming 33 bytes of NVRAM for the compressed
representation of a prime256v1 compressed public key to 32 bytes for its
SHA256 hash. This makes it easier to process with the standard OpenSSL
binary.
BUG=chromium:845589
TEST=make runtests
BRANCH=none
Change-Id: Ic641b800bcbf2158d52ffbebbf143c47061e8cc3
Reviewed-on: https://chromium-review.googlesource.com/1161496
Commit-Ready: Tudor Brindus <tbrindus@chromium.org>
Tested-by: Tudor Brindus <tbrindus@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
| -rw-r--r-- | firmware/lib/include/rollback_index.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/firmware/lib/include/rollback_index.h b/firmware/lib/include/rollback_index.h index cf345614..f8905987 100644 --- a/firmware/lib/include/rollback_index.h +++ b/firmware/lib/include/rollback_index.h @@ -22,10 +22,10 @@ #define FWMP_NV_MAX_SIZE 128 #define REC_HASH_NV_INDEX 0x100b #define REC_HASH_NV_SIZE VB2_SHA256_DIGEST_SIZE -/* Space to hold a temporary key for USB autoconfig; see crbug.com/793878. */ -#define OOBE_USB_AUTOCONFIG_KEY_NV_INDEX 0x100c -/* Size of a P256 elliptic curve public key in compressed format. */ -#define OOBE_USB_AUTOCONFIG_KEY_NV_SIZE 33 +/* Space to hold a temporary SHA256 digest of a public key for USB autoconfig; + * see crbug.com/845589. */ +#define OOBE_USB_AUTOCONFIG_KEY_DIGEST_NV_INDEX 0x100c +#define OOBE_USB_AUTOCONFIG_KEY_DIGEST_NV_SIZE VB2_SHA256_DIGEST_SIZE /* Structure definitions for TPM spaces */ |