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/*
* Copyright (C) 2020 Sony Interactive Entertainment Inc.
*
* 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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"
#include "CryptoAlgorithmHKDF.h"
#if ENABLE(WEB_CRYPTO)
#include "CryptoAlgorithmHkdfParams.h"
#include "CryptoKeyRaw.h"
#include "OpenSSLUtilities.h"
#include <openssl/hkdf.h>
namespace WebCore {
ExceptionOr<Vector<uint8_t>> CryptoAlgorithmHKDF::platformDeriveBits(const CryptoAlgorithmHkdfParams& parameters, const CryptoKeyRaw& key, size_t length)
{
auto algorithm = digestAlgorithm(parameters.hashIdentifier);
if (!algorithm)
return Exception { NotSupportedError };
Vector<uint8_t> output(length / 8);
if (HKDF(output.data(), output.size(), algorithm, key.key().data(), key.key().size(), parameters.saltVector().data(), parameters.saltVector().size(), parameters.infoVector().data(), parameters.infoVector().size()) <= 0)
return Exception { OperationError };
return output;
}
} // namespace WebCore
#endif // ENABLE(WEB_CRYPTO)
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