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/*
* Copyright (C) 2013 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 "CryptoKeyAES.h"
#if ENABLE(SUBTLE_CRYPTO)
#include "CryptoAlgorithmDescriptionBuilder.h"
#include "CryptoAlgorithmRegistry.h"
#include "CryptoKeyDataOctetSequence.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
CryptoKeyAES::CryptoKeyAES(CryptoAlgorithmIdentifier algorithm, const Vector<uint8_t>& key, bool extractable, CryptoKeyUsage usage)
: CryptoKey(algorithm, CryptoKeyType::Secret, extractable, usage)
, m_key(key)
{
ASSERT(isValidAESAlgorithm(algorithm));
}
CryptoKeyAES::~CryptoKeyAES()
{
}
bool CryptoKeyAES::isValidAESAlgorithm(CryptoAlgorithmIdentifier algorithm)
{
return algorithm == CryptoAlgorithmIdentifier::AES_CTR
|| algorithm == CryptoAlgorithmIdentifier::AES_CBC
|| algorithm == CryptoAlgorithmIdentifier::AES_CMAC
|| algorithm == CryptoAlgorithmIdentifier::AES_GCM
|| algorithm == CryptoAlgorithmIdentifier::AES_CFB
|| algorithm == CryptoAlgorithmIdentifier::AES_KW;
}
PassRefPtr<CryptoKeyAES> CryptoKeyAES::generate(CryptoAlgorithmIdentifier algorithm, size_t lengthBits, bool extractable, CryptoKeyUsage usages)
{
if (lengthBits % 8)
return nullptr;
return adoptRef(new CryptoKeyAES(algorithm, randomData(lengthBits / 8), extractable, usages));
}
void CryptoKeyAES::buildAlgorithmDescription(CryptoAlgorithmDescriptionBuilder& builder) const
{
CryptoKey::buildAlgorithmDescription(builder);
builder.add("length", m_key.size() * 8);
}
std::unique_ptr<CryptoKeyData> CryptoKeyAES::exportData() const
{
return CryptoKeyDataOctetSequence::create(m_key);
}
} // namespace WebCore
#endif // ENABLE(SUBTLE_CRYPTO)
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