/******************************************************************************
 * Copyright (c) 2022 Telink Semiconductor (Shanghai) Co., Ltd. ("TELINK")
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *****************************************************************************/
#ifndef ECC_LL_H_
#define ECC_LL_H_

#include "algorithm/ecc/ecc_curve.h"

extern const u8 blt_ecc_dbg_priv_key192[24];
extern const u8 blt_ecc_dbg_pub_key192[48];

extern const u8 blt_ecc_dbg_priv_key256[32];
extern const u8 blt_ecc_dbg_pub_key256[64];

/**
* @brief		This function is used to register the random number function needed for ECC calculation
* @param		none
* @return		none
*/
void blt_ecc_init(void);

/**
* @brief		This function is used to generate an ECDH public-private key pairs
* @param[out]  pub[64]:  output ecdh public key
* @param[out]  priv[64]: output ecdh private key
* @param[in]   use_dbg_key: 0: Non-debug key , others: debug key
* @return		1:  success
*              0: failure
*/
int blt_ecc_gen_key_pair(unsigned char *pub, unsigned char *priv, ecc_curve_t curve, bool use_dbg_key);

/**
* @brief		This function is used to calculate DHKEY based on the peer public key and own private key
* @param[in]   peer_pub_key[64]: peer public key
* @param[in]   own_priv_key[32]: own private key
* @param[out]  out_dhkey[32]: dhkey key
* @return		1:  success
*              0: failure
*/
int blt_ecc_gen_dhkey(const unsigned char *peer_pub, const unsigned char *own_priv, unsigned char *out_dhkey,
                      ecc_curve_t curve);

#endif /* ECC_LL_H_ */