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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* 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.
* 3. Neither the name of Google, Inc. ("Google") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE 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 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 "Crypto.h"
#include "Document.h"
#include "SubtleCrypto.h"
#include <JavaScriptCore/ArrayBufferView.h>
#include <wtf/CryptographicallyRandomNumber.h>
#include <wtf/UUID.h>
#if OS(DARWIN)
#include <CommonCrypto/CommonCryptor.h>
#include <CommonCrypto/CommonRandom.h>
#endif
namespace WebCore {
Crypto::Crypto(ScriptExecutionContext* context)
: ContextDestructionObserver(context)
, m_subtle(SubtleCrypto::create(context))
{
}
Crypto::~Crypto() = default;
ExceptionOr<void> Crypto::getRandomValues(ArrayBufferView& array)
{
if (!isInt(array.getType()) && !isBigInt(array.getType()))
return Exception { ExceptionCode::TypeMismatchError };
if (array.byteLength() > 65536)
return Exception { ExceptionCode::QuotaExceededError };
#if OS(DARWIN)
auto rc = CCRandomGenerateBytes(array.baseAddress(), array.byteLength());
RELEASE_ASSERT(rc == kCCSuccess);
#else
cryptographicallyRandomValues(array.mutableSpan());
#endif
return { };
}
String Crypto::randomUUID() const
{
return createVersion4UUIDString();
}
SubtleCrypto& Crypto::subtle()
{
return m_subtle;
}
} // namespace WebCore
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