1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
6 * The library is free for all purposes without any express
11 #ifdef LTC_HASH_HELPERS
14 Hash memory helper, Tom St Denis
18 Hash a block of memory and store the digest.
19 @param hash The index of the hash you wish to use
20 @param in The data you wish to hash
21 @param inlen The length of the data to hash (octets)
22 @param out [out] Where to store the digest
23 @param outlen [in/out] Max size and resulting size of the digest
24 @return CRYPT_OK if successful
26 int hash_memory(int hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen)
31 LTC_ARGCHK(in != NULL);
32 LTC_ARGCHK(out != NULL);
33 LTC_ARGCHK(outlen != NULL);
35 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
39 if (*outlen < hash_descriptor[hash].hashsize) {
40 *outlen = hash_descriptor[hash].hashsize;
41 return CRYPT_BUFFER_OVERFLOW;
44 md = XMALLOC(sizeof(hash_state));
49 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) {
52 if ((err = hash_descriptor[hash].process(md, in, inlen)) != CRYPT_OK) {
55 err = hash_descriptor[hash].done(md, out);
56 *outlen = hash_descriptor[hash].hashsize;
58 #ifdef LTC_CLEAN_STACK
59 zeromem(md, sizeof(hash_state));
65 #endif /* #ifdef LTC_HASH_HELPERS */
67 /* ref: $Format:%D$ */
68 /* git commit: $Format:%H$ */
69 /* commit time: $Format:%ai$ */