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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_IMPL_H_
#define CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_IMPL_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "third_party/WebKit/public/platform/WebCrypto.h"
#include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
#include "third_party/WebKit/public/platform/WebVector.h"
namespace content {
// Wrapper around the Blink WebCrypto asynchronous interface, which forwards to
// the synchronous platfrom (NSS or OpenSSL) implementation.
//
// TODO(eroman): Post the synchronous work to a background thread.
class WebCryptoImpl : public blink::WebCrypto {
public:
WebCryptoImpl();
virtual ~WebCryptoImpl();
virtual void encrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const unsigned char* data,
unsigned int data_size,
blink::WebCryptoResult result);
virtual void decrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const unsigned char* data,
unsigned int data_size,
blink::WebCryptoResult result);
virtual void digest(const blink::WebCryptoAlgorithm& algorithm,
const unsigned char* data,
unsigned int data_size,
blink::WebCryptoResult result);
virtual void generateKey(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoResult result);
virtual void importKey(blink::WebCryptoKeyFormat format,
const unsigned char* key_data,
unsigned int key_data_size,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoResult result);
virtual void exportKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
blink::WebCryptoResult result);
virtual void sign(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const unsigned char* data,
unsigned int data_size,
blink::WebCryptoResult result);
virtual void verifySignature(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const unsigned char* signature,
unsigned int signature_size,
const unsigned char* data,
unsigned int data_size,
blink::WebCryptoResult result);
virtual void wrapKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& wrap_algorithm,
blink::WebCryptoResult result);
virtual void unwrapKey(
blink::WebCryptoKeyFormat format,
const unsigned char* wrapped_key,
unsigned wrapped_key_size,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& unwrap_algorithm,
const blink::WebCryptoAlgorithm& unwrapped_key_algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoResult result);
// This method returns a digestor object that can be used to synchronously
// compute a digest one chunk at a time. Thus, the consume does not need to
// hold onto a large buffer with all the data to digest. Chunks can be given
// one at a time and the digest will be computed piecemeal. The allocated
// WebCrytpoDigestor that is returned by createDigestor must be freed by the
// caller.
virtual blink::WebCryptoDigestor* createDigestor(
blink::WebCryptoAlgorithmId algorithm_id);
virtual bool deserializeKeyForClone(
const blink::WebCryptoKeyAlgorithm& algorithm,
blink::WebCryptoKeyType type,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
const unsigned char* key_data,
unsigned key_data_size,
blink::WebCryptoKey& key);
virtual bool serializeKeyForClone(const blink::WebCryptoKey& key,
blink::WebVector<unsigned char>& key_data);
private:
DISALLOW_COPY_AND_ASSIGN(WebCryptoImpl);
};
} // namespace content
#endif // CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_IMPL_H_
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