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/*
* Copyright (C) 2017-2024 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.
*/
#pragma once
#include "BufferSource.h"
#include "CryptoAlgorithmParameters.h"
#include <wtf/Vector.h>
namespace WebCore {
class CryptoAlgorithmAesGcmParams final : public CryptoAlgorithmParameters {
WTF_MAKE_TZONE_ALLOCATED(CryptoAlgorithmAesGcmParams);
public:
BufferSource iv;
// Use additionalDataVector() instead of additionalData. The label will be gone once additionalDataVector() is called.
mutable std::optional<BufferSource::VariantType> additionalData;
mutable std::optional<uint8_t> tagLength;
Class parametersClass() const final { return Class::AesGcmParams; }
const Vector<uint8_t>& ivVector() const
{
if (!m_ivVector.isEmpty() || !iv.length())
return m_ivVector;
m_ivVector.append(iv.span());
return m_ivVector;
}
const Vector<uint8_t>& additionalDataVector() const
{
if (!m_additionalDataVector.isEmpty() || !additionalData)
return m_additionalDataVector;
BufferSource additionalDataBuffer = WTFMove(*additionalData);
additionalData = std::nullopt;
if (!additionalDataBuffer.length())
return m_additionalDataVector;
m_additionalDataVector.append(additionalDataBuffer.span());
return m_additionalDataVector;
}
CryptoAlgorithmAesGcmParams isolatedCopy() const
{
CryptoAlgorithmAesGcmParams result;
result.identifier = identifier;
result.m_ivVector = ivVector();
result.m_additionalDataVector = additionalDataVector();
result.tagLength = tagLength;
return result;
}
private:
mutable Vector<uint8_t> m_ivVector;
mutable Vector<uint8_t> m_additionalDataVector;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CRYPTO_ALGORITHM_PARAMETERS(AesGcmParams)
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