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vboot2: move verify digest to 2common

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This removes code duplicated between 2common.c and 2rsa.c.  This is in
preparation for adding new unsigned hash algorithms.

BUG=chromium:423882
BRANCH=none
TEST=VBOOT2=1 make -j runtests

Change-Id: Ic9c542ae14d3b7f786129c1d52f8963847a94fb8
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/224780
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Randall Spangler
2014-10-17 16:41:46 -07:00
committed by chrome-internal-fetch
parent 6df3e33912
commit 9504754fee
8 changed files with 82 additions and 57 deletions
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12
firmware/2lib/include/2rsa.h
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@@ -44,8 +44,8 @@ uint32_t vb2_packed_key_size(uint32_t algorithm);
*/
int vb2_check_padding(uint8_t *sig, int algorithm);
/* Size of work buffer sufficient for vb2_verify_digest() worst case */
#define VB2_VERIFY_DIGEST_WORKBUF_BYTES (3 * 1024)
/* Size of work buffer sufficient for vb2_rsa_verify_digest() worst case */
#define VB2_VERIFY_RSA_DIGEST_WORKBUF_BYTES (3 * 1024)
/**
* Verify a RSA PKCS1.5 signature against an expected hash digest.
@@ -56,9 +56,9 @@ int vb2_check_padding(uint8_t *sig, int algorithm);
* @param wb Work buffer
* @return VB2_SUCCESS, or non-zero if error.
*/
int vb2_verify_digest(const struct vb2_public_key *key,
uint8_t *sig,
const uint8_t *digest,
struct vb2_workbuf *wb);
int vb2_rsa_verify_digest(const struct vb2_public_key *key,
uint8_t *sig,
const uint8_t *digest,
struct vb2_workbuf *wb);
#endif /* VBOOT_REFERENCE_2RSA_H_ */