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/*
* Copyright (C) 2021, Stephan Mueller <smueller@chronox.de>
*
* License: see LICENSE file in root directory
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
* WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef JITTERENTROPY_SHA3_H
#define JITTERENTROPY_SHA3_H
#include "jitterentropy.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define SHA3_SIZE_BLOCK(bits) ((1600 - 2 * bits) >> 3)
#define SHA3_256_SIZE_BLOCK SHA3_SIZE_BLOCK(SHA3_256_SIZE_DIGEST_BITS)
#define SHA3_MAX_SIZE_BLOCK SHA3_256_SIZE_BLOCK
struct sha_ctx {
uint64_t state[25];
size_t msg_len;
unsigned int r;
unsigned int rword;
unsigned int digestsize;
uint8_t partial[SHA3_MAX_SIZE_BLOCK];
};
#define SHA_MAX_CTX_SIZE (sizeof(struct sha_ctx))
#define HASH_CTX_ON_STACK(name) \
struct sha_ctx name
void sha3_256_init(struct sha_ctx *ctx);
void sha3_update(struct sha_ctx *ctx, const uint8_t *in, size_t inlen);
void sha3_final(struct sha_ctx *ctx, uint8_t *digest);
int sha3_tester(void);
#ifdef __cplusplus
}
#endif
#endif /* JITTERENTROPY_SHA3_H */
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