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/*
* Ouroboros - Copyright (C) 2016 - 2024
*
* Hashing functions
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* 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/ipcp.h>
#include <stdint.h>
#include <stddef.h>
/* Hash algorithms */
enum hash_algo {
HASH_SHA3_224 = DIR_HASH_SHA3_224,
HASH_SHA3_256 = DIR_HASH_SHA3_256,
HASH_SHA3_384 = DIR_HASH_SHA3_384,
HASH_SHA3_512 = DIR_HASH_SHA3_512,
HASH_CRC32,
HASH_MD5,
};
#define HASH_FMT32 "%02x%02x%02x%02x"
#define HASH_VAL32(hash) \
(hash)[0], (hash)[1], (hash)[2], (hash)[3]
#define HASH_FMT64 HASH_FMT32 HASH_FMT32
#define HASH_VAL64(hash64) \
HASH_VAL32(hash64), HASH_VAL32(hash64 + 4)
#define HASH_FMT128 HASH_FMT64 HASH_FMT64
#define HASH_VAL128(hash128) \
HASH_VAL64(hash128), HASH_VAL64(hash128 + 8)
#define HASH_FMT224 HASH_FMT128 HASH_FMT64 HASH_FMT32
#define HASH_VAL224(hash224) \
HASH_VAL128(hash224), HASH_VAL64(hash224 + 16), \
HASH_VAL32(hash224 + 24)
#define HASH_FMT256 HASH_FMT128 HASH_FMT128
#define HASH_VAL256(hash256) \
HASH_VAL128(hash256), HASH_VAL128(hash256 + 16)
#define HASH_FMT384 HASH_FMT256 HASH_FMT128
#define HASH_VAL384(hash384) \
HASH_VAL256(hash384), HASH_VAL128(hash384 + 32)
#define HASH_FMT512 HASH_FMT256 HASH_FMT256
#define HASH_VAL512(hash512) \
HASH_VAL256(hash512), HASH_VAL256(hash512 + 32)
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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