prf.h

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/*
 * Copyright (C) 2022 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
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
 
#ifndef ASCON_PRF_H
#define ASCON_PRF_H
 
#include <ascon/permutation.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define ASCON_PRF_KEY_SIZE 16
 
#define ASCON_PRF_TAG_SIZE 16
 
#define ASCON_PRF_SHORT_KEY_SIZE ASCON_PRF_KEY_SIZE
 
#define ASCON_PRF_SHORT_MAX_INPUT_SIZE 16
 
#define ASCON_PRF_SHORT_MAX_OUTPUT_SIZE 16
 
#define ASCON_PRF_SHORT_TAG_SIZE ASCON_PRF_SHORT_MAX_OUTPUT_SIZE
 
#define ASCON_MAC_KEY_SIZE ASCON_PRF_KEY_SIZE
 
#define ASCON_MAC_TAG_SIZE ASCON_PRF_TAG_SIZE
 
typedef struct
{
    ascon_state_t state;    
    unsigned char count;    
    unsigned char mode;     
} ascon_prf_state_t;
 
void ascon_prf
    (unsigned char *out, size_t outlen,
     const unsigned char *in, size_t inlen,
     const unsigned char *key);
 
void ascon_prf_fixed
    (unsigned char *out, size_t outlen,
     const unsigned char *in, size_t inlen,
     const unsigned char *key);
 
int ascon_prf_short
    (unsigned char *out, size_t outlen,
     const unsigned char *in, size_t inlen,
     const unsigned char *key);
 
void ascon_mac
    (unsigned char *tag,
     const unsigned char *in, size_t inlen,
     const unsigned char *key);
 
int ascon_mac_verify
    (const unsigned char *tag,
     const unsigned char *in, size_t inlen,
     const unsigned char *key);
 
void ascon_prf_init(ascon_prf_state_t *state, const unsigned char *key);
 
void ascon_prf_fixed_init
    (ascon_prf_state_t *state, const unsigned char *key, size_t outlen);
 
void ascon_prf_reinit(ascon_prf_state_t *state, const unsigned char *key);
 
void ascon_prf_fixed_reinit
    (ascon_prf_state_t *state, const unsigned char *key, size_t outlen);
 
void ascon_prf_free(ascon_prf_state_t *state);
 
void ascon_prf_absorb
    (ascon_prf_state_t *state, const unsigned char *in, size_t inlen);
 
void ascon_prf_squeeze
    (ascon_prf_state_t *state, unsigned char *out, size_t outlen);
 
#ifdef __cplusplus
}
#endif
 
#endif