#ifndef LIBCRYPTO_COMPAT_H
#define LIBCRYPTO_COMPAT_H

#include <openssl/opensslv.h>

#define NISTP256 "P-256"
#define NISTP384 "P-384"
#define NISTP521 "P-521"

#if OPENSSL_VERSION_NUMBER < 0x10100000L

#include <openssl/rsa.h>
#include <openssl/dsa.h>
#include <openssl/ecdsa.h>
#include <openssl/dh.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/bn.h>

int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp);

void DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
void DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key);
int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);

void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);

void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);

EVP_MD_CTX *EVP_MD_CTX_new(void);
void EVP_MD_CTX_free(EVP_MD_CTX *ctx);

void DH_get0_pqg(const DH *dh,
                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
void DH_get0_key(const DH *dh,
                 const BIGNUM **pub_key, const BIGNUM **priv_key);
int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);

const char *OpenSSL_version(int type);
unsigned long OpenSSL_version_num(void);

#endif /* OPENSSL_VERSION_NUMBER */

#endif /* LIBCRYPTO_COMPAT_H */