diff options
Diffstat (limited to 'libtomcrypt/hashes/hash_memory.c')
-rw-r--r-- | libtomcrypt/hashes/hash_memory.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libtomcrypt/hashes/hash_memory.c b/libtomcrypt/hashes/hash_memory.c new file mode 100644 index 0000000..8775355 --- /dev/null +++ b/libtomcrypt/hashes/hash_memory.c @@ -0,0 +1,72 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <ncr_int.h> +#include <cryptodev_int.h> + +/** + @file hash_memory.c + Hash memory helper, Tom St Denis +*/ + +/** + Hash a block of memory and store the digest. + @param hash The index of the hash you wish to use + @param in The data you wish to hash + @param inlen The length of the data to hash (octets) + @param out [out] Where to store the digest + @param outlen [in/out] Max size and resulting size of the digest + @return CRYPT_OK if successful +*/ +int hash_memory(int hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen) +{ + int err; + const char* str; + struct hash_data hdata; + int digest_size; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + digest_size = _ncr_algo_digest_size(hash); + if (*outlen < digest_size) { + *outlen = digest_size; + return CRYPT_BUFFER_OVERFLOW; + } + + err = cryptodev_hash_init( &data, _ncr_algo_to_str(hash), 0, NULL, 0); + if (err < 0) { + err = CRYPT_INVALID_HASH; + goto LBL_ERR; + } + + if ((err = _cryptodev_hash_update(&hdata, in, inlen)) < 0) { + err = CRYPT_ERROR; + goto LBL_ERR; + } + + err = cryptodev_hash_final(&hdata, out); + + *outlen = digest_size; +LBL_ERR: + cryptodev_hash_deinit(&hdata); +#ifdef LTC_CLEAN_STACK + zeromem(md, sizeof(hash_state)); +#endif + + return err; +} + |