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/* $OpenBSD: sha3_internal.h,v 1.7 2023/04/15 18:30:27 jsing Exp $ */
/*
* The MIT License (MIT)
*
* Copyright (c) 2015 Markku-Juhani O. Saarinen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stddef.h>
#include <stdint.h>
#ifndef HEADER_SHA3_INTERNAL_H
#define HEADER_SHA3_INTERNAL_H
typedef struct {
union {
uint8_t b[200]; /* State as 8 bit bytes. */
uint64_t q[25]; /* State as 64 bit words. */
} st;
int pt, rsiz, mdlen;
} sha3_ctx;
void sha3_keccakf(uint64_t st[25]);
int sha3_init(sha3_ctx *c, int mdlen);
int sha3_update(sha3_ctx *c, const void *data, size_t len);
int sha3_final(void *md, sha3_ctx *c);
void *sha3(const void *in, size_t inlen, void *md, int mdlen);
/* SHAKE128 and SHAKE256 extensible-output functions. */
#define shake128_init(c) sha3_init(c, 16)
#define shake256_init(c) sha3_init(c, 32)
#define shake_update sha3_update
void shake_xof(sha3_ctx *c);
void shake_out(sha3_ctx *c, void *out, size_t len);
#endif
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