diff options
Diffstat (limited to 'src/libstrongswan/plugins/sha2/sha2_hasher.c')
| -rw-r--r-- | src/libstrongswan/plugins/sha2/sha2_hasher.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/sha2/sha2_hasher.c b/src/libstrongswan/plugins/sha2/sha2_hasher.c index 0e8811cca..645f4d786 100644 --- a/src/libstrongswan/plugins/sha2/sha2_hasher.c +++ b/src/libstrongswan/plugins/sha2/sha2_hasher.c @@ -58,6 +58,11 @@ struct private_sha256_hasher_t { }; +static const u_int32_t sha224_hashInit[8] = { + 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511, + 0x64f98fa7, 0xbefa4fa4 +}; + static const u_int32_t sha256_hashInit[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 @@ -422,6 +427,21 @@ static void sha512_final(private_sha512_hasher_t *ctx) } /** + * Implementation of hasher_t.get_hash for SHA224. + */ +static void get_hash224(private_sha256_hasher_t *this, + chunk_t chunk, u_int8_t *buffer) +{ + sha256_write(this, chunk.ptr, chunk.len); + if (buffer != NULL) + { + sha256_final(this); + memcpy(buffer, this->sha_out, HASH_SIZE_SHA224); + this->public.hasher_interface.reset(&(this->public.hasher_interface)); + } +} + +/** * Implementation of hasher_t.get_hash for SHA256. */ static void get_hash256(private_sha256_hasher_t *this, @@ -467,6 +487,25 @@ static void get_hash512(private_sha512_hasher_t *this, } /** + * Implementation of hasher_t.allocate_hash for SHA224. + */ +static void allocate_hash224(private_sha256_hasher_t *this, + chunk_t chunk, chunk_t *hash) +{ + chunk_t allocated_hash; + + sha256_write(this, chunk.ptr, chunk.len); + if (hash != NULL) + { + sha256_final(this); + allocated_hash = chunk_alloc(HASH_SIZE_SHA224); + memcpy(allocated_hash.ptr, this->sha_out, HASH_SIZE_SHA224); + this->public.hasher_interface.reset(&(this->public.hasher_interface)); + *hash = allocated_hash; + } +} + +/** * Implementation of hasher_t.allocate_hash for SHA256. */ static void allocate_hash256(private_sha256_hasher_t *this, @@ -524,6 +563,14 @@ static void allocate_hash512(private_sha512_hasher_t *this, } /** + * Implementation of hasher_t.get_hash_size for SHA224. + */ +static size_t get_hash_size224(private_sha256_hasher_t *this) +{ + return HASH_SIZE_SHA224; +} + +/** * Implementation of hasher_t.get_hash_size for SHA256. */ static size_t get_hash_size256(private_sha256_hasher_t *this) @@ -548,6 +595,16 @@ static size_t get_hash_size512(private_sha512_hasher_t *this) } /** + * Implementation of hasher_t.reset for SHA224 + */ +static void reset224(private_sha256_hasher_t *ctx) +{ + memcpy(&ctx->sha_H[0], &sha224_hashInit[0], sizeof(ctx->sha_H)); + ctx->sha_blocks = 0; + ctx->sha_bufCnt = 0; +} + +/** * Implementation of hasher_t.reset for SHA256 */ static void reset256(private_sha256_hasher_t *ctx) @@ -596,6 +653,13 @@ sha2_hasher_t *sha2_hasher_create(hash_algorithm_t algorithm) switch (algorithm) { + case HASH_SHA224: + this = (sha2_hasher_t*)malloc_thing(private_sha256_hasher_t); + this->hasher_interface.reset = (void(*)(hasher_t*))reset224; + this->hasher_interface.get_hash_size = (size_t(*)(hasher_t*))get_hash_size224; + this->hasher_interface.get_hash = (void(*)(hasher_t*,chunk_t,u_int8_t*))get_hash224; + this->hasher_interface.allocate_hash = (void(*)(hasher_t*,chunk_t,chunk_t*))allocate_hash224; + break; case HASH_SHA256: this = (sha2_hasher_t*)malloc_thing(private_sha256_hasher_t); this->hasher_interface.reset = (void(*)(hasher_t*))reset256; |