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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 WebCrypto_h
#define WebCrypto_h
#include "WebCommon.h"
#include "WebCryptoKey.h"
#include "WebPrivatePtr.h"
namespace WebCore { class CryptoResult; }
#if BLINK_IMPLEMENTATION
namespace WTF { template <typename T> class PassRefPtr; }
#endif
namespace blink {
class WebArrayBuffer;
class WebCryptoResult {
public:
WebCryptoResult(const WebCryptoResult& o)
{
assign(o);
}
~WebCryptoResult()
{
reset();
}
WebCryptoResult& operator=(const WebCryptoResult& o)
{
assign(o);
return *this;
}
BLINK_EXPORT void completeWithError();
BLINK_EXPORT void completeWithBuffer(const WebArrayBuffer&);
BLINK_EXPORT void completeWithBuffer(const void*, unsigned);
BLINK_EXPORT void completeWithBoolean(bool);
BLINK_EXPORT void completeWithKey(const WebCryptoKey&);
BLINK_EXPORT void completeWithKeyPair(const WebCryptoKey& publicKey, const WebCryptoKey& privateKey);
#if BLINK_IMPLEMENTATION
explicit WebCryptoResult(const WTF::PassRefPtr<WebCore::CryptoResult>&);
#endif
private:
BLINK_EXPORT void reset();
BLINK_EXPORT void assign(const WebCryptoResult&);
WebPrivatePtr<WebCore::CryptoResult> m_impl;
};
class WebCrypto {
public:
// Starts a one-shot cryptographic operation which can complete either
// synchronously, or asynchronously.
//
// Let the WebCryptoResult be called "result".
//
// The result should be set exactly once, from the same thread which
// initiated the operation.
//
// * WebCryptoAlgorithms parameters are guaranteed to be !isNull(),
// unless noted otherwise.
// * WebCryptoKey parameters are guaranteeed to be !isNull().
// * const unsigned char* data buffers are not valid after return.
virtual void encrypt(const WebCryptoAlgorithm&, const WebCryptoKey&, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
virtual void decrypt(const WebCryptoAlgorithm&, const WebCryptoKey&, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
virtual void sign(const WebCryptoAlgorithm&, const WebCryptoKey&, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
virtual void verifySignature(const WebCryptoAlgorithm&, const WebCryptoKey&, const unsigned char* signature, unsigned signatureSize, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
virtual void digest(const WebCryptoAlgorithm&, const unsigned char* data, unsigned dataSize, WebCryptoResult result) { result.completeWithError(); }
virtual void generateKey(const WebCryptoAlgorithm&, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
// The WebCryptoAlgorithm for importKey may be "isNull()" meaning that it
// was unspecified by the caller.
virtual void importKey(WebCryptoKeyFormat, const unsigned char* keyData, unsigned keyDataSize, const WebCryptoAlgorithm&, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
virtual void exportKey(WebCryptoKeyFormat, const WebCryptoKey&, WebCryptoResult result) { result.completeWithError(); }
virtual void wrapKey(WebCryptoKeyFormat, const WebCryptoKey& key, const WebCryptoKey& wrappingKey, const WebCryptoAlgorithm&, WebCryptoResult result) { result.completeWithError(); }
// It is possible for unwrappedKeyAlgorithm.isNull() meaning that it was
// unspecified by the caller.
virtual void unwrapKey(WebCryptoKeyFormat, const unsigned char* wrappedKey, unsigned wrappedKeySize, const WebCryptoKey&, const WebCryptoAlgorithm& unwrapAlgorithm, const WebCryptoAlgorithm& unwrappedKeyAlgorithm, bool extractable, WebCryptoKeyUsageMask, WebCryptoResult result) { result.completeWithError(); }
protected:
virtual ~WebCrypto() { }
};
} // namespace blink
#endif
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