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/*
* FIPS 180-2 SHA-224/256/384/512 implementation
* Last update: 02/02/2007
* Issue date: 04/30/2005
*
* Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef SHA3_H
#define SHA3_H
#include "hash-method.h"
#include "sha-common.h"
#define SHA3_KECCAK_SPONGE_WORDS \
(((1600)/8/*bits to byte*/)/sizeof(uint64_t))
struct sha3_ctx {
uint64_t saved; /* the portion of the input message that we
* didn't consume yet */
union { /* Keccak's state */
uint64_t s[SHA3_KECCAK_SPONGE_WORDS];
uint8_t sb[SHA3_KECCAK_SPONGE_WORDS * 8];
};
unsigned byteIndex; /* 0..7--the next byte after the set one
* (starts from 0; 0--none are buffered) */
unsigned wordIndex; /* 0..24--the next word to integrate input
* (starts from 0) */
unsigned capacityWords; /* the double size of the hash output in
* words (e.g. 16 for Keccak 512) */
};
void sha3_256_init(void *context);
void sha3_256_result(void *context,
unsigned char digest[STATIC_ARRAY SHA256_RESULTLEN]);
void sha3_256_get_digest(const void *data, size_t size,
unsigned char digest[STATIC_ARRAY SHA256_RESULTLEN]);
void sha3_512_init(void *context);
void sha3_512_result(void *context,
unsigned char digest[STATIC_ARRAY SHA512_RESULTLEN]);
void sha3_512_get_digest(const void *data, size_t size,
unsigned char digest[STATIC_ARRAY SHA512_RESULTLEN]);
void sha3_loop(void *context, const void *data, size_t len);
extern const struct hash_method hash_method_sha3_256;
extern const struct hash_method hash_method_sha3_512;
#endif
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