/*
 * Copyright (c) 2025, Altomani Gianluca <altomanigianluca@gmail.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

extern "C" {
typedef struct engine_st ENGINE;
typedef struct bignum_st BIGNUM;
typedef struct evp_md_st EVP_MD;
typedef struct evp_md_ctx_st EVP_MD_CTX;
typedef struct evp_pkey_st EVP_PKEY;
typedef struct evp_pkey_ctx_st EVP_PKEY_CTX;

long unsigned int ERR_get_error();
char* ERR_error_string(long unsigned int, char*);

EVP_MD_CTX* EVP_MD_CTX_new();
void EVP_MD_CTX_free(EVP_MD_CTX*);
int EVP_DigestUpdate(EVP_MD_CTX*, void const*, size_t);
int EVP_DigestInit_ex(EVP_MD_CTX*, const EVP_MD*, ENGINE*);
int EVP_DigestFinal_ex(EVP_MD_CTX*, unsigned char*, unsigned int*);
int EVP_MD_CTX_copy_ex(EVP_MD_CTX*, EVP_MD_CTX const*);

void EVP_PKEY_CTX_free(EVP_PKEY_CTX*);

void EVP_PKEY_free(EVP_PKEY*);

void BN_free(BIGNUM*);
}