romulus-kmac.h

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/*
 * Copyright (C) 2021 Southern Storm Software, Pty Ltd.
 *
 * 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
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 * DEALINGS IN THE SOFTWARE.
 */

#ifndef LWCRYPTO_ROMULUS_KMAC_H
#define LWCRYPTO_ROMULUS_KMAC_H

#include "romulus-xof.h"

#ifdef __cplusplus
extern "C" {
#endif

#define ROMULUS_KMAC_SIZE ROMULUS_HASH_SIZE

typedef romulus_xof_state_t romulus_kmac_state_t;

void romulus_kmac
    (const unsigned char *key, size_t keylen,
     const unsigned char *in, size_t inlen,
     const unsigned char *custom, size_t customlen,
     unsigned char *out, size_t outlen);

void romulus_kmac_init
    (romulus_kmac_state_t *state, const unsigned char *key, size_t keylen,
     const unsigned char *custom, size_t customlen);

void romulus_kmac_absorb
    (romulus_kmac_state_t *state, const unsigned char *in, size_t inlen);

void romulus_kmac_set_output_length
    (romulus_kmac_state_t *state, size_t outlen);

void romulus_kmac_squeeze
    (romulus_kmac_state_t *state, unsigned char *out, size_t outlen);

void romulus_kmac_finalize
    (romulus_kmac_state_t *state, unsigned char out[ROMULUS_KMAC_SIZE]);

#ifdef __cplusplus
}
#endif

#endif