hash.h

// SPDX-License-Identifier: MIT

#ifndef HASH_H
#define HASH_H

#include "params.h"
#include "common/fips202.h"
#include <stddef.h>
#include <stdint.h>

static const uint8_t HASH_PREFIX_0 = (uint8_t)AIMER_HASH_PREFIX_0;
static const uint8_t HASH_PREFIX_1 = 1;
static const uint8_t HASH_PREFIX_2 = 2;
static const uint8_t HASH_PREFIX_3 = 3;
static const uint8_t HASH_PREFIX_4 = 4;
static const uint8_t HASH_PREFIX_5 = 5;

#if SECURITY_BITS == 128
typedef shake128incctx hash_instance;
#else
typedef shake256incctx hash_instance;
#endif

#define hash_init AIMER_NAMESPACE(hash_init)
void hash_init(hash_instance *ctx);
#define hash_init_prefix AIMER_NAMESPACE(hash_init_prefix)
void hash_init_prefix(hash_instance *ctx, uint8_t prefix);
#define hash_update AIMER_NAMESPACE(hash_update)
void hash_update(hash_instance *ctx, const uint8_t *data, size_t data_len);
#define hash_final AIMER_NAMESPACE(hash_final)
void hash_final(hash_instance *ctx);
#define hash_squeeze AIMER_NAMESPACE(hash_squeeze)
void hash_squeeze(hash_instance *ctx, uint8_t *buffer, size_t buffer_len);
#define hash_ctx_release AIMER_NAMESPACE(hash_ctx_release)
void hash_ctx_release(hash_instance *ctx);

#endif // HASH_H