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/* 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@iahu.ca, http://libtomcrypt.org
*/
#include "mycrypt.h"
int hash_memory(int hash, const unsigned char *data, unsigned long len, unsigned char *dst, unsigned long *outlen)
{
hash_state *md;
int err;
_ARGCHK(data != NULL);
_ARGCHK(dst != NULL);
_ARGCHK(outlen != NULL);
if ((err = hash_is_valid(hash)) != CRYPT_OK) {
return err;
}
if (*outlen < hash_descriptor[hash].hashsize) {
return CRYPT_BUFFER_OVERFLOW;
}
md = XMALLOC(sizeof(hash_state));
if (md == NULL) {
return CRYPT_MEM;
}
if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) {
goto __ERR;
}
if ((err = hash_descriptor[hash].process(md, data, len)) != CRYPT_OK) {
goto __ERR;
}
err = hash_descriptor[hash].done(md, dst);
*outlen = hash_descriptor[hash].hashsize;
__ERR:
#ifdef CLEAN_STACK
zeromem(md, sizeof(hash_state));
#endif
XFREE(md);
return err;
}
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