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/*
* 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_botan.hpp"
#include "hash_botan.hpp"
namespace rnp {
Hkdf_Botan::Hkdf_Botan(pgp_hash_alg_t hash_alg) : Hkdf(hash_alg)
{
}
std::unique_ptr<Hkdf_Botan>
Hkdf_Botan::create(pgp_hash_alg_t alg)
{
return std::unique_ptr<Hkdf_Botan>(new Hkdf_Botan(alg));
}
std::string
Hkdf_Botan::alg() const
{
return std::string("HKDF(") + Hash_Botan::name_backend(Hkdf::alg()) + ")";
}
void
Hkdf_Botan::extract_expand(const uint8_t *salt,
size_t salt_len,
const uint8_t *ikm,
size_t ikm_len,
const uint8_t *info,
size_t info_len,
uint8_t * output_buf,
size_t output_length)
{
std::unique_ptr<Botan::KDF> kdf = Botan::KDF::create_or_throw(Hkdf_Botan::alg(), "");
Botan::secure_vector<uint8_t> OKM;
OKM = kdf->derive_key(output_length, ikm, ikm_len, salt, salt_len, info, info_len);
memcpy(output_buf, Botan::unlock(OKM).data(), output_length);
}
Hkdf_Botan::~Hkdf_Botan()
{
}
} // namespace rnp
#endif