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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.
*/
#ifndef CryptoKeyHMAC_h
#define CryptoKeyHMAC_h
#include "CryptoKey.h"
#include <wtf/Vector.h>
#if ENABLE(SUBTLE_CRYPTO)
namespace WebCore {
class CryptoKeyHMAC final : public CryptoKey {
public:
static PassRefPtr<CryptoKeyHMAC> create(const Vector<uint8_t>& key, CryptoAlgorithmIdentifier hash, bool extractable, CryptoKeyUsage usage)
{
return adoptRef(new CryptoKeyHMAC(key, hash, extractable, usage));
}
virtual ~CryptoKeyHMAC();
// If lengthBytes is 0, a recommended length is used, which is the size of the associated hash function's block size.
static PassRefPtr<CryptoKeyHMAC> generate(size_t lengthBytes, CryptoAlgorithmIdentifier hash, bool extractable, CryptoKeyUsage);
virtual CryptoKeyClass keyClass() const override { return CryptoKeyClass::HMAC; }
const Vector<uint8_t>& key() const { return m_key; }
CryptoAlgorithmIdentifier hashAlgorithmIdentifier() const { return m_hash; }
private:
CryptoKeyHMAC(const Vector<uint8_t>& key, CryptoAlgorithmIdentifier hash, bool extractable, CryptoKeyUsage);
virtual void buildAlgorithmDescription(CryptoAlgorithmDescriptionBuilder&) const override;
virtual std::unique_ptr<CryptoKeyData> exportData() const override;
CryptoAlgorithmIdentifier m_hash;
Vector<uint8_t> m_key;
};
inline bool isCryptoKeyHMAC(const CryptoKey& key)
{
return key.keyClass() == CryptoKeyClass::HMAC;
}
CRYPTO_KEY_TYPE_CASTS(CryptoKeyHMAC)
} // namespace WebCore
#endif // ENABLE(SUBTLE_CRYPTO)
#endif // CryptoKeyHMAC_h
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