[S] Change in coreboot[master]: vboot: Fix hash digest size, padding and comparison

[Jakub Czapiga (Code Review)]

Attention is currently required from: Jakub Czapiga, Caveh Jalali, Julius Werner, Boris Mittelberg.

Hello build bot (Jenkins), Caveh Jalali, Julius Werner, Yu-Ping Wu, Boris Mittelberg,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/69762

to look at the new patch set (#4).

Change subject: vboot: Fix hash digest size, padding and comparison
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vboot: Fix hash digest size, padding and comparison

Allow for saving hash shorter than slot size by padding too short data
with zeros. Eliminate possible prefix-only comparisons.

Signed-off-by: Jakub Czapiga 
Change-Id: If6d46e0b58dbca86af56221b7ff2606ab2d1799a
---
M src/ec/google/chromeec/vboot_storage.c
M src/security/vboot/vboot_logic.c
2 files changed, 25 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/62/69762/4