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/*
* Ouroboros - Copyright (C) 2016 - 2020
*
* Hashing functions
*
* Dimitri Staessens <dimitri.staessens@ugent.be>
* Sander Vrijders <sander.vrijders@ugent.be>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_LIB_HASH_H
#define OUROBOROS_LIB_HASH_H
#include "config.h"
#include <ouroboros/endian.h>
#ifdef HAVE_LIBGCRYPT
#include <gcrypt.h>
#endif
#include <stdint.h>
#include <stddef.h>
/* Hash algorithms */
enum hash_algo {
#ifdef HAVE_LIBGCRYPT
HASH_CRC32 = GCRY_MD_CRC32,
HASH_MD5 = GCRY_MD_MD5,
HASH_SHA3_224 = GCRY_MD_SHA3_224,
HASH_SHA3_256 = GCRY_MD_SHA3_256,
HASH_SHA3_384 = GCRY_MD_SHA3_384,
HASH_SHA3_512 = GCRY_MD_SHA3_512
#else
HASH_CRC32 = 0,
HASH_MD5,
HASH_SHA3_224,
HASH_SHA3_256,
HASH_SHA3_384,
HASH_SHA3_512
#endif
};
#define HASH_FMT "%02x%02x%02x%02x"
#define HASH_VAL(hash) \
(betoh32(*(uint32_t *) hash) & 0xFF000000) >> 24, \
(betoh32(*(uint32_t *) hash) & 0x00FF0000) >> 16, \
(betoh32(*(uint32_t *) hash) & 0x0000FF00) >> 8, \
(betoh32(*(uint32_t *) hash) & 0x000000FF)
uint16_t hash_len(enum hash_algo algo);
void mem_hash(enum hash_algo algo,
void * dst,
const uint8_t * buf,
size_t len);
void str_hash(enum hash_algo algo,
void * dst,
const char * str);
#endif /* OUROBOROS_LIB_HASH_H */
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