diff options
Diffstat (limited to 'include/crypto/sha2.h')
| -rw-r--r-- | include/crypto/sha2.h | 62 |
1 files changed, 30 insertions, 32 deletions
diff --git a/include/crypto/sha2.h b/include/crypto/sha2.h index b9e9281d76c9..4912572578dc 100644 --- a/include/crypto/sha2.h +++ b/include/crypto/sha2.h @@ -13,12 +13,14 @@ #define SHA256_DIGEST_SIZE 32 #define SHA256_BLOCK_SIZE 64 +#define SHA256_STATE_WORDS 8 #define SHA384_DIGEST_SIZE 48 #define SHA384_BLOCK_SIZE 128 #define SHA512_DIGEST_SIZE 64 #define SHA512_BLOCK_SIZE 128 +#define SHA512_STATE_SIZE 80 #define SHA224_H0 0xc1059ed8UL #define SHA224_H1 0x367cd507UL @@ -64,9 +66,19 @@ extern const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE]; extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE]; -struct sha256_state { - u32 state[SHA256_DIGEST_SIZE / 4]; +struct crypto_sha256_state { + u32 state[SHA256_STATE_WORDS]; u64 count; +}; + +struct sha256_state { + union { + struct crypto_sha256_state ctx; + struct { + u32 state[SHA256_STATE_WORDS]; + u64 count; + }; + }; u8 buf[SHA256_BLOCK_SIZE]; }; @@ -76,31 +88,7 @@ struct sha512_state { u8 buf[SHA512_BLOCK_SIZE]; }; -struct shash_desc; - -extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data, - unsigned int len); - -extern int crypto_sha256_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *hash); - -extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data, - unsigned int len); - -extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *hash); - -/* - * Stand-alone implementation of the SHA256 algorithm. It is designed to - * have as little dependencies as possible so it can be used in the - * kexec_file purgatory. In other cases you should generally use the - * hash APIs from include/crypto/hash.h. Especially when hashing large - * amounts of data as those APIs may be hw-accelerated. - * - * For details see lib/crypto/sha256.c - */ - -static inline void sha256_init(struct sha256_state *sctx) +static inline void sha256_block_init(struct crypto_sha256_state *sctx) { sctx->state[0] = SHA256_H0; sctx->state[1] = SHA256_H1; @@ -112,11 +100,16 @@ static inline void sha256_init(struct sha256_state *sctx) sctx->state[7] = SHA256_H7; sctx->count = 0; } -void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len); -void sha256_final(struct sha256_state *sctx, u8 *out); -void sha256(const u8 *data, unsigned int len, u8 *out); -static inline void sha224_init(struct sha256_state *sctx) +static inline void sha256_init(struct sha256_state *sctx) +{ + sha256_block_init(&sctx->ctx); +} +void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len); +void sha256_final(struct sha256_state *sctx, u8 out[SHA256_DIGEST_SIZE]); +void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE]); + +static inline void sha224_block_init(struct crypto_sha256_state *sctx) { sctx->state[0] = SHA224_H0; sctx->state[1] = SHA224_H1; @@ -128,7 +121,12 @@ static inline void sha224_init(struct sha256_state *sctx) sctx->state[7] = SHA224_H7; sctx->count = 0; } + +static inline void sha224_init(struct sha256_state *sctx) +{ + sha224_block_init(&sctx->ctx); +} /* Simply use sha256_update as it is equivalent to sha224_update. */ -void sha224_final(struct sha256_state *sctx, u8 *out); +void sha224_final(struct sha256_state *sctx, u8 out[SHA224_DIGEST_SIZE]); #endif /* _CRYPTO_SHA2_H */ |