/*

 * Copyright (C) 2000-2012 Free Software Foundation, Inc.

 *

 * Author: Nikos Mavrogiannopoulos

 *

 * This file is part of GnuTLS.

 *

 * The GnuTLS is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>

 *

 */

#ifndef GNUTLS_LIB_PK_H

#define GNUTLS_LIB_PK_H

extern int crypto_pk_prio;

extern gnutls_crypto_pk_st _gnutls_pk_ops;

#define _gnutls_pk_encrypt( algo, ciphertext, plaintext, params) _gnutls_pk_ops.encrypt( algo, ciphertext, plaintext, params)

#define _gnutls_pk_decrypt( algo, ciphertext, plaintext, params) _gnutls_pk_ops.decrypt( algo, ciphertext, plaintext, params)

#define _gnutls_pk_decrypt2( algo, ciphertext, plaintext, size, params) _gnutls_pk_ops.decrypt2( algo, ciphertext, plaintext, size, params)

#define _gnutls_pk_sign( algo, sig, data, params, sign_params) _gnutls_pk_ops.sign( algo, sig, data, params, sign_params)

#define _gnutls_pk_verify( algo, data, sig, params, sign_params) _gnutls_pk_ops.verify( algo, data, sig, params, sign_params)

#define _gnutls_pk_verify_priv_params( algo, params) _gnutls_pk_ops.verify_priv_params( algo, params)

#define _gnutls_pk_verify_pub_params( algo, params) _gnutls_pk_ops.verify_pub_params( algo, params)

#define _gnutls_pk_derive( algo, out, pub, priv) _gnutls_pk_ops.derive( algo, out, pub, priv, NULL, 0)

#define _gnutls_pk_derive_nonce( algo, out, pub, priv, nonce) _gnutls_pk_ops.derive( algo, out, pub, priv, nonce, 0)

#define _gnutls_pk_derive_tls13( algo, out, pub, priv) _gnutls_pk_ops.derive( algo, out, pub, priv, NULL, PK_DERIVE_TLS13)

#define _gnutls_pk_generate_keys( algo, bits, params, temporal) _gnutls_pk_ops.generate_keys( algo, bits, params, temporal)

#define _gnutls_pk_generate_params( algo, bits, priv) _gnutls_pk_ops.generate_params( algo, bits, priv)

#define _gnutls_pk_hash_algorithm( pk, sig, params, hash) _gnutls_pk_ops.hash_algorithm(pk, sig, params, hash)

#define _gnutls_pk_curve_exists( curve) _gnutls_pk_ops.curve_exists(curve)

inline static int

_gnutls_pk_fixup(gnutls_pk_algorithm_t algo, gnutls_direction_t direction,

		 gnutls_pk_params_st * params)

{

	if (_gnutls_pk_ops.pk_fixup_private_params)

		return _gnutls_pk_ops.pk_fixup_private_params(algo,

							      direction,

							      params);

	return 0;

}

int _gnutls_pk_params_copy(gnutls_pk_params_st * dst,

			   const gnutls_pk_params_st * src);

/* The internal PK interface */

int

_gnutls_encode_ber_rs(gnutls_datum_t * sig_value, bigint_t r, bigint_t s);

int

_gnutls_encode_ber_rs_raw(gnutls_datum_t * sig_value,

			  const gnutls_datum_t * r,

			  const gnutls_datum_t * s);

int

_gnutls_decode_ber_rs(const gnutls_datum_t * sig_value, bigint_t * r,

		      bigint_t * s);

int

_gnutls_decode_ber_rs_raw(const gnutls_datum_t * sig_value, gnutls_datum_t *r,

			  gnutls_datum_t *s);

int

_gnutls_encode_gost_rs(gnutls_datum_t * sig_value, bigint_t r, bigint_t s,

		       size_t intsize);

int

_gnutls_decode_gost_rs(const gnutls_datum_t * sig_value, bigint_t * r,

		       bigint_t * s);

gnutls_digest_algorithm_t _gnutls_gost_digest(gnutls_pk_algorithm_t pk);

gnutls_pk_algorithm_t _gnutls_digest_gost(gnutls_digest_algorithm_t digest);

gnutls_gost_paramset_t _gnutls_gost_paramset_default(gnutls_pk_algorithm_t pk);

int

encode_ber_digest_info(const mac_entry_st * e,

		       const gnutls_datum_t * digest,

		       gnutls_datum_t * output);

#define decode_ber_digest_info gnutls_decode_ber_digest_info

int

_gnutls_params_get_rsa_raw(const gnutls_pk_params_st* params,

				    gnutls_datum_t * m, gnutls_datum_t * e,

				    gnutls_datum_t * d, gnutls_datum_t * p,

				    gnutls_datum_t * q, gnutls_datum_t * u,

				    gnutls_datum_t * e1,

				    gnutls_datum_t * e2,

				    unsigned int flags);

int

_gnutls_params_get_dsa_raw(const gnutls_pk_params_st* params,

			     gnutls_datum_t * p, gnutls_datum_t * q,

			     gnutls_datum_t * g, gnutls_datum_t * y,

			     gnutls_datum_t * x, unsigned int flags);

int _gnutls_params_get_ecc_raw(const gnutls_pk_params_st* params,

				       gnutls_ecc_curve_t * curve,

				       gnutls_datum_t * x,

				       gnutls_datum_t * y,

				       gnutls_datum_t * k,

				       unsigned int flags);

int _gnutls_params_get_gost_raw(const gnutls_pk_params_st* params,

				       gnutls_ecc_curve_t * curve,

				       gnutls_digest_algorithm_t * digest,

				       gnutls_gost_paramset_t * paramset,

				       gnutls_datum_t * x,

				       gnutls_datum_t * y,

				       gnutls_datum_t * k,

				       unsigned int flags);

int pk_prepare_hash(gnutls_pk_algorithm_t pk, const mac_entry_st * hash,

		    gnutls_datum_t * output);

int pk_hash_data(gnutls_pk_algorithm_t pk, const mac_entry_st * hash,

		 gnutls_pk_params_st * params, const gnutls_datum_t * data,

		 gnutls_datum_t * digest);

int _gnutls_find_rsa_pss_salt_size(unsigned bits, const mac_entry_st *me,

				   unsigned salt_size);

#endif /* GNUTLS_LIB_PK_H */