Randall Spangler f81fce91bf Make SHA library accessible to calling firmware ...

And add a vb2_digest_buffer() call which produces the hash of a buffer
all in a single function call.  That function actually already
existed, but was in a unit test file rather than in the library
itself.  It's a small function, so adding it won't increase the size
of the library significantly - or at all, on platforms which compile
with -ffunction-sections.

This allows coreboot to reuse this SHA library for hashing CBFS
entries and file data.  All it has to do is #define
NEED_VB2_SHA_LIBRARY and then #include "vb2_api.h".

BUG=chromium:482652
BRANCH=none
TEST=make -j runtests

Change-Id: Ice2d0929324b58b2665f3989b5b887225f6ef61e
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/269523
Reviewed-by: Julius Werner <jwerner@chromium.org>

2015-05-07 00:00:36 +00:00

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