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/*
* Copyright (C) 2017 Apple Inc. 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 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"
#include "CryptoAlgorithmHkdfParams.h"
#include "CryptoKeyRaw.h"
#include "ScriptExecutionContext.h"
#include <JavaScriptCore/JSCJSValueInlines.h>
#include <wtf/CrossThreadCopier.h>
namespace WebCore {
Ref<CryptoAlgorithm> CryptoAlgorithmHKDF::create()
{
return adoptRef(*new CryptoAlgorithmHKDF);
}
CryptoAlgorithmIdentifier CryptoAlgorithmHKDF::identifier() const
{
return s_identifier;
}
void CryptoAlgorithmHKDF::deriveBits(const CryptoAlgorithmParameters& parameters, Ref<CryptoKey>&& baseKey, std::optional<size_t> length, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
{
if (!length || *length % 8) {
exceptionCallback(ExceptionCode::OperationError);
return;
}
dispatchOperationInWorkQueue(workQueue, context, WTFMove(callback), WTFMove(exceptionCallback),
[parameters = crossThreadCopy(downcast<CryptoAlgorithmHkdfParams>(parameters)), baseKey = WTFMove(baseKey), length] {
return *length ? platformDeriveBits(parameters, downcast<CryptoKeyRaw>(baseKey.get()), *length) : Vector<uint8_t>();
});
}
void CryptoAlgorithmHKDF::importKey(CryptoKeyFormat format, KeyData&& data, const CryptoAlgorithmParameters& parameters, bool extractable, CryptoKeyUsageBitmap usages, KeyCallback&& callback, ExceptionCallback&& exceptionCallback)
{
if (format != CryptoKeyFormat::Raw) {
exceptionCallback(ExceptionCode::NotSupportedError);
return;
}
if (usages & (CryptoKeyUsageEncrypt | CryptoKeyUsageDecrypt | CryptoKeyUsageSign | CryptoKeyUsageVerify | CryptoKeyUsageWrapKey | CryptoKeyUsageUnwrapKey)) {
exceptionCallback(ExceptionCode::SyntaxError);
return;
}
if (extractable) {
exceptionCallback(ExceptionCode::SyntaxError);
return;
}
callback(CryptoKeyRaw::create(parameters.identifier, WTFMove(std::get<Vector<uint8_t>>(data)), usages));
}
ExceptionOr<std::optional<size_t>> CryptoAlgorithmHKDF::getKeyLength(const CryptoAlgorithmParameters&)
{
return std::optional<size_t>();
}
} // namespace WebCore
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