diff options
Diffstat (limited to 'freebsd/sys/crypto/sha2/sha256c.c')
| -rw-r--r-- | freebsd/sys/crypto/sha2/sha256c.c | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/freebsd/sys/crypto/sha2/sha256c.c b/freebsd/sys/crypto/sha2/sha256c.c index ea389694..dbba6d35 100644 --- a/freebsd/sys/crypto/sha2/sha256c.c +++ b/freebsd/sys/crypto/sha2/sha256c.c @@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$"); #include <string.h> #endif +#include "sha224.h" #include "sha256.h" #if BYTE_ORDER == BIG_ENDIAN @@ -299,7 +300,57 @@ SHA256_Final(unsigned char digest[static SHA256_DIGEST_LENGTH], SHA256_CTX *ctx) be32enc_vect(digest, ctx->state, SHA256_DIGEST_LENGTH); /* Clear the context state */ - memset(ctx, 0, sizeof(*ctx)); + explicit_bzero(ctx, sizeof(*ctx)); +} + +/*** SHA-224: *********************************************************/ +/* + * the SHA224 and SHA256 transforms are identical + */ + +/* SHA-224 initialization. Begins a SHA-224 operation. */ +void +SHA224_Init(SHA224_CTX * ctx) +{ + + /* Zero bits processed so far */ + ctx->count = 0; + + /* Magic initialization constants */ + ctx->state[0] = 0xC1059ED8; + ctx->state[1] = 0x367CD507; + ctx->state[2] = 0x3070DD17; + ctx->state[3] = 0xF70E5939; + ctx->state[4] = 0xFFC00B31; + ctx->state[5] = 0x68581511; + ctx->state[6] = 0x64f98FA7; + ctx->state[7] = 0xBEFA4FA4; +} + +/* Add bytes into the SHA-224 hash */ +void +SHA224_Update(SHA224_CTX * ctx, const void *in, size_t len) +{ + + SHA256_Update((SHA256_CTX *)ctx, in, len); +} + +/* + * SHA-224 finalization. Pads the input data, exports the hash value, + * and clears the context state. + */ +void +SHA224_Final(unsigned char digest[static SHA224_DIGEST_LENGTH], SHA224_CTX *ctx) +{ + + /* Add padding */ + SHA256_Pad((SHA256_CTX *)ctx); + + /* Write the hash */ + be32enc_vect(digest, ctx->state, SHA224_DIGEST_LENGTH); + + /* Clear the context state */ + explicit_bzero(ctx, sizeof(*ctx)); } #ifdef WEAK_REFS @@ -315,4 +366,11 @@ __weak_reference(_libmd_SHA256_Update, SHA256_Update); __weak_reference(_libmd_SHA256_Final, SHA256_Final); #undef SHA256_Transform __weak_reference(_libmd_SHA256_Transform, SHA256_Transform); + +#undef SHA224_Init +__weak_reference(_libmd_SHA224_Init, SHA224_Init); +#undef SHA224_Update +__weak_reference(_libmd_SHA224_Update, SHA224_Update); +#undef SHA224_Final +__weak_reference(_libmd_SHA224_Final, SHA224_Final); #endif |