#ifndef SYMMETRIC_H
#define SYMMETRIC_H

/*
 * This file was originally licensed
 * under Apache 2.0 (https://www.apache.org/licenses/LICENSE-2.0.html) or
 * public domain at https://github.com/pq-crystals/dilithium/tree/master/ref
 *
 * We choose
 * CC0 1.0 Universal or the following MIT License
 *
 * MIT License
 *
 * Copyright (c) 2023: Hanno Becker, Vincent Hwang, Matthias J. Kannwischer, Bo-Yin Yang, and Shang-Yi Yang
 *
 * 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 "fips202.h"
#include "fips202x2.h"
#include "params.h"
#include <stdint.h>

typedef shake128incctx stream128_state;
typedef shake256incctx stream256_state;

#define dilithium_shake128_stream_init DILITHIUM_NAMESPACE(dilithium_shake128_stream_init)
void dilithium_shake128_stream_init(shake128incctx *state,
                                    const uint8_t seed[SEEDBYTES],
                                    uint16_t nonce);

#define dilithium_shake256_stream_init DILITHIUM_NAMESPACE(dilithium_shake256_stream_init)
void dilithium_shake256_stream_init(shake256incctx *state,
                                    const uint8_t seed[CRHBYTES],
                                    uint16_t nonce);

#define dilithium_shake128x2_stream_init DILITHIUM_NAMESPACE(dilithium_shake128x2_stream_init)
void dilithium_shake128x2_stream_init(keccakx2_state *state,
                                      const uint8_t seed[SEEDBYTES],
                                      uint16_t nonce1, uint16_t nonce2);
#define dilithium_shake256x2_stream_init DILITHIUM_NAMESPACE(dilithium_shake256x2_stream_init)
void dilithium_shake256x2_stream_init(keccakx2_state *state,
                                      const uint8_t seed[CRHBYTES],
                                      uint16_t nonce1, uint16_t nonce2);

#define STREAM128_BLOCKBYTES SHAKE128_RATE
#define STREAM256_BLOCKBYTES SHAKE256_RATE

#define stream128_init(STATE, SEED, NONCE) \
    dilithium_shake128_stream_init(STATE, SEED, NONCE)
#define stream128_squeezeblocks(OUT, OUTBLOCKS, STATE) \
    shake128_inc_squeeze(OUT, (OUTBLOCKS)*(SHAKE128_RATE), STATE)
#define stream128_release(STATE) shake128_inc_ctx_release(STATE)
#define stream256_init(STATE, SEED, NONCE) \
    dilithium_shake256_stream_init(STATE, SEED, NONCE)
#define stream256_squeezeblocks(OUT, OUTBLOCKS, STATE) \
    shake256_inc_squeeze(OUT, (OUTBLOCKS)*(SHAKE256_RATE), STATE)
#define stream256_release(STATE) shake256_inc_ctx_release(STATE)

#endif