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Use CHROMEOS_EC macro to cut down compiled size.

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This macro is only defined by the EC firmware build process, and is used to
cut down the amount of compiled code. A future CL will refactor the library
to make this unnecessary.

BUG=chrome-os-partner:7459
TEST=manual

  make
  make runtests

Change-Id: I41d0b4b282ec7147e8d6f508531af32e74f2d19e
Reviewed-on: https://gerrit.chromium.org/gerrit/22313
Commit-Ready: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Bill Richardson
2012-05-09 16:22:04 -07:00
committed by Gerrit
parent fe356f9d57
commit 317e25c663
2 changed files with 46 additions and 0 deletions
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27
firmware/lib/cryptolib/sha_utility.c
View File

@@ -12,53 +12,65 @@
void DigestInit(DigestContext* ctx, int sig_algorithm) {
ctx->algorithm = hash_type_map[sig_algorithm];
switch(ctx->algorithm) {
#ifndef CHROMEOS_EC
case SHA1_DIGEST_ALGORITHM:
ctx->sha1_ctx = (SHA1_CTX*) VbExMalloc(sizeof(SHA1_CTX));
SHA1_init(ctx->sha1_ctx);
break;
#endif
case SHA256_DIGEST_ALGORITHM:
ctx->sha256_ctx = (SHA256_CTX*) VbExMalloc(sizeof(SHA256_CTX));
SHA256_init(ctx->sha256_ctx);
break;
#ifndef CHROMEOS_EC
case SHA512_DIGEST_ALGORITHM:
ctx->sha512_ctx = (SHA512_CTX*) VbExMalloc(sizeof(SHA512_CTX));
SHA512_init(ctx->sha512_ctx);
break;
#endif
};
}
void DigestUpdate(DigestContext* ctx, const uint8_t* data, uint32_t len) {
switch(ctx->algorithm) {
#ifndef CHROMEOS_EC
case SHA1_DIGEST_ALGORITHM:
SHA1_update(ctx->sha1_ctx, data, len);
break;
#endif
case SHA256_DIGEST_ALGORITHM:
SHA256_update(ctx->sha256_ctx, data, len);
break;
#ifndef CHROMEOS_EC
case SHA512_DIGEST_ALGORITHM:
SHA512_update(ctx->sha512_ctx, data, len);
break;
#endif
};
}
uint8_t* DigestFinal(DigestContext* ctx) {
uint8_t* digest = NULL;
switch(ctx->algorithm) {
#ifndef CHROMEOS_EC
case SHA1_DIGEST_ALGORITHM:
digest = (uint8_t*) VbExMalloc(SHA1_DIGEST_SIZE);
Memcpy(digest, SHA1_final(ctx->sha1_ctx), SHA1_DIGEST_SIZE);
VbExFree(ctx->sha1_ctx);
break;
#endif
case SHA256_DIGEST_ALGORITHM:
digest = (uint8_t*) VbExMalloc(SHA256_DIGEST_SIZE);
Memcpy(digest, SHA256_final(ctx->sha256_ctx), SHA256_DIGEST_SIZE);
VbExFree(ctx->sha256_ctx);
break;
#ifndef CHROMEOS_EC
case SHA512_DIGEST_ALGORITHM:
digest = (uint8_t*) VbExMalloc(SHA512_DIGEST_SIZE);
Memcpy(digest, SHA512_final(ctx->sha512_ctx), SHA512_DIGEST_SIZE);
VbExFree(ctx->sha512_ctx);
break;
#endif
};
return digest;
}
@@ -71,6 +83,20 @@ uint8_t* DigestBuf(const uint8_t* buf, uint64_t len, int sig_algorithm) {
*/
typedef uint8_t* (*Hash_ptr) (const uint8_t*, uint64_t, uint8_t*);
Hash_ptr hash[] = {
#ifdef CHROMEOS_EC
0, /* RSA 1024 */
0,
0,
0, /* RSA 2048 */
0,
0,
0, /* RSA 4096 */
SHA256,
0,
0, /* RSA 8192 */
0,
0,
#else
SHA1, /* RSA 1024 */
SHA256,
SHA512,
@@ -83,6 +109,7 @@ uint8_t* DigestBuf(const uint8_t* buf, uint64_t len, int sig_algorithm) {
SHA1, /* RSA 8192 */
SHA256,
SHA512,
#endif
};
/* Call the appropriate hash function. */
return hash[sig_algorithm](buf, len, digest);