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
9 * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
15 Hash memory helper, Tom St Denis
19 Hash a block of memory and store the digest.
20 @param hash The index of the hash you wish to use
21 @param in The data you wish to hash
22 @param inlen The length of the data to hash (octets)
23 @param out [out] Where to store the digest
24 @param outlen [in/out] Max size and resulting size of the digest
25 @return CRYPT_OK if successful
27 int hash_memory(int hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen)
32 LTC_ARGCHK(in != NULL);
33 LTC_ARGCHK(out != NULL);
34 LTC_ARGCHK(outlen != NULL);
36 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
40 if (*outlen < hash_descriptor[hash].hashsize) {
41 *outlen = hash_descriptor[hash].hashsize;
42 return CRYPT_BUFFER_OVERFLOW;
45 md = XMALLOC(sizeof(hash_state));
50 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) {
53 if ((err = hash_descriptor[hash].process(md, in, inlen)) != CRYPT_OK) {
56 err = hash_descriptor[hash].done(md, out);
57 *outlen = hash_descriptor[hash].hashsize;
59 #ifdef LTC_CLEAN_STACK
60 zeromem(md, sizeof(hash_state));
67 /* $Source: /cvs/libtom/libtomcrypt/src/hashes/helper/hash_memory.c,v $ */
68 /* $Revision: 1.5 $ */
69 /* $Date: 2006/06/16 21:53:41 $ */