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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@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 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(const struct algo_properties_st *hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen)
{
int err;
struct hash_data hdata;
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->digest_size) {
*outlen = hash->digest_size;
return CRYPT_BUFFER_OVERFLOW;
}
err = cryptodev_hash_init( &hdata, hash->kstr, 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 = hash->digest_size;
LBL_ERR:
cryptodev_hash_deinit(&hdata);
return err;
}
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