/*
 * Copyright (c) 2017, [Ribose Inc](https://www.ribose.com).
 * All rights reserved.
 *
 * This code is originally derived from software contributed to
 * The NetBSD Foundation by Alistair Crooks (agc@netbsd.org), and
 * carried further by Ribose Inc (https://www.ribose.com).
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef RNP_ED25519_H_
#define RNP_ED25519_H_

#include "ec.h"

rnp_result_t eddsa_validate_key(rnp::RNG *rng, const pgp_ec_key_t *key, bool secret);
/*
 * curve_len must be 255 currently (for Ed25519)
 * If Ed448 was supported in the future curve_len=448 would also be allowed.
 */
rnp_result_t eddsa_generate(rnp::RNG *rng, pgp_ec_key_t *key);

rnp_result_t eddsa_verify(const pgp_ec_signature_t *sig,
                          const uint8_t *           hash,
                          size_t                    hash_len,
                          const pgp_ec_key_t *      key);

rnp_result_t eddsa_sign(rnp::RNG *          rng,
                        pgp_ec_signature_t *sig,
                        const uint8_t *     hash,
                        size_t              hash_len,
                        const pgp_ec_key_t *key);

#endif