/* 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://libtomcrypt.org */#include "tomcrypt.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){    hash_state *md;    int err;    LTC_ARGCHK(in     != NULL);    LTC_ARGCHK(out    != NULL);    LTC_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 LBL_ERR;    }    if ((err = hash_descriptor[hash].process(md, in, inlen)) != CRYPT_OK) {       goto LBL_ERR;    }    err = hash_descriptor[hash].done(md, out);    *outlen = hash_descriptor[hash].hashsize;LBL_ERR:#ifdef LTC_CLEAN_STACK    zeromem(md, sizeof(hash_state));#endif    XFREE(md);    return err;}/* $Source: /cvs/libtom/libtomcrypt/src/hashes/helper/hash_memory.c,v $ *//* $Revision: 1.3 $ *//* $Date: 2005/05/05 14:35:58 $ */