diff options
| -rw-r--r-- | include/crypto/sha256.h | 5 | ||||
| -rw-r--r-- | lib/crypto/sha256.c | 37 |
2 files changed, 40 insertions, 2 deletions
diff --git a/include/crypto/sha256.h b/include/crypto/sha256.h index 9cbb3589b8b3..a75998d65a41 100644 --- a/include/crypto/sha256.h +++ b/include/crypto/sha256.h @@ -26,4 +26,9 @@ extern int sha256_update(struct sha256_state *sctx, const u8 *input, unsigned int length); extern int sha256_final(struct sha256_state *sctx, u8 *hash); +extern int sha224_init(struct sha256_state *sctx); +extern int sha224_update(struct sha256_state *sctx, const u8 *input, + unsigned int length); +extern int sha224_final(struct sha256_state *sctx, u8 *hash); + #endif /* SHA256_H */ diff --git a/lib/crypto/sha256.c b/lib/crypto/sha256.c index f2ed75ae6910..45ad87520769 100644 --- a/lib/crypto/sha256.c +++ b/lib/crypto/sha256.c @@ -221,6 +221,22 @@ int sha256_init(struct sha256_state *sctx) } EXPORT_SYMBOL(sha256_init); +int sha224_init(struct sha256_state *sctx) +{ + sctx->state[0] = SHA224_H0; + sctx->state[1] = SHA224_H1; + sctx->state[2] = SHA224_H2; + sctx->state[3] = SHA224_H3; + sctx->state[4] = SHA224_H4; + sctx->state[5] = SHA224_H5; + sctx->state[6] = SHA224_H6; + sctx->state[7] = SHA224_H7; + sctx->count = 0; + + return 0; +} +EXPORT_SYMBOL(sha224_init); + int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) { unsigned int partial, done; @@ -252,7 +268,13 @@ int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) } EXPORT_SYMBOL(sha256_update); -int sha256_final(struct sha256_state *sctx, u8 *out) +int sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len) +{ + return sha256_update(sctx, data, len); +} +EXPORT_SYMBOL(sha224_update); + +static int __sha256_final(struct sha256_state *sctx, u8 *out, int digest_words) { __be32 *dst = (__be32 *)out; __be64 bits; @@ -272,7 +294,7 @@ int sha256_final(struct sha256_state *sctx, u8 *out) sha256_update(sctx, (const u8 *)&bits, sizeof(bits)); /* Store state in digest */ - for (i = 0; i < 8; i++) + for (i = 0; i < digest_words; i++) put_unaligned_be32(sctx->state[i], &dst[i]); /* Zeroize sensitive information. */ @@ -280,4 +302,15 @@ int sha256_final(struct sha256_state *sctx, u8 *out) return 0; } + +int sha256_final(struct sha256_state *sctx, u8 *out) +{ + return __sha256_final(sctx, out, 8); +} EXPORT_SYMBOL(sha256_final); + +int sha224_final(struct sha256_state *sctx, u8 *out) +{ + return __sha256_final(sctx, out, 7); +} +EXPORT_SYMBOL(sha224_final); |