/*
 * Copyright (c) 2023, [MTG AG](https://www.mtg.de).
 * All rights reserved.
 *
 * 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 OWNER 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.
 */

#include "config.h"

#if defined(ENABLE_CRYPTO_REFRESH)

#include "hkdf.hpp"

#if defined(CRYPTO_BACKEND_BOTAN)
#include "hkdf_botan.hpp"
#endif
#if defined(CRYPTO_BACKEND_OPENSSL)
#error HKDF not implemented for OpenSSL Backend
#endif

namespace rnp {
std::unique_ptr<Hkdf>
Hkdf::create(pgp_hash_alg_t alg)
{
#if defined(CRYPTO_BACKEND_OPENSSL)
#error HKDF not implemented for OpenSSL
    // return Hash_OpenSSL::create(alg);
#elif defined(CRYPTO_BACKEND_BOTAN)
    return Hkdf_Botan::create(alg);
#else
#error "Crypto backend not specified"
#endif
}

size_t
Hkdf::size() const
{
    return size_;
}

pgp_hash_alg_t
Hkdf::alg() const
{
    return hash_alg_;
}

Hkdf::~Hkdf()
{
}

} // namespace rnp

#endif