ocrypto_ecdh_p256.h

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/*
 * Copyright (c) 2016 - 2025 Nordic Semiconductor ASA
 * Copyright (c) since 2013 Oberon microsystems AG
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
 
#ifndef OCRYPTO_ECDH_P256_H
#define OCRYPTO_ECDH_P256_H
 
#include "ocrypto_types_p256.h"
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
typedef struct {
    ocrypto_p256_mult_ctx mul;
    int ret;
} ocrypto_ecdh_p256_ctx;
int ocrypto_ecdh_p256_secret_key_check(const uint8_t sk[32]);
 
int ocrypto_ecdh_p256_public_key_check(const uint8_t pk[64]);
 
int ocrypto_ecdh_p256_public_key(uint8_t pk[64], const uint8_t sk[32]);
 
int ocrypto_ecdh_p256_common_secret(uint8_t r[32], const uint8_t sk[32], const uint8_t pk[64]);
 
 
void ocrypto_ecdh_p256_public_key_init(ocrypto_ecdh_p256_ctx *ctx, const uint8_t sk[32]);
 
int ocrypto_ecdh_p256_public_key_iterate(ocrypto_ecdh_p256_ctx *ctx);
 
int ocrypto_ecdh_p256_public_key_final(ocrypto_ecdh_p256_ctx *ctx, uint8_t pk[64]);
 
void ocrypto_ecdh_p256_common_secret_init(ocrypto_ecdh_p256_ctx *ctx, const uint8_t sk[32], const uint8_t pk[64]);
 
int ocrypto_ecdh_p256_common_secret_iterate(ocrypto_ecdh_p256_ctx *ctx);
 
int ocrypto_ecdh_p256_common_secret_final(ocrypto_ecdh_p256_ctx *ctx, uint8_t r[32]);
#ifdef __cplusplus
}
#endif
 
#endif