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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 COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_
#define COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_
#include "base/compiler_specific.h"
#include "base/macros.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 webcrypto {
// Wrapper around the Blink WebCrypto asynchronous interface, which forwards to
// the synchronous OpenSSL implementation.
//
// WebCryptoImpl is threadsafe.
//
// EnsureInit() must be called prior to using methods on WebCryptoImpl().
class WebCryptoImpl : public blink::WebCrypto {
public:
WebCryptoImpl();
~WebCryptoImpl() override;
void encrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
blink::WebVector<unsigned char> data,
blink::WebCryptoResult result) override;
void decrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
blink::WebVector<unsigned char> data,
blink::WebCryptoResult result) override;
void digest(const blink::WebCryptoAlgorithm& algorithm,
blink::WebVector<unsigned char> data,
blink::WebCryptoResult result) override;
void generateKey(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoResult result) override;
void importKey(blink::WebCryptoKeyFormat format,
blink::WebVector<unsigned char> key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoResult result) override;
void exportKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
blink::WebCryptoResult result) override;
void sign(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
blink::WebVector<unsigned char> data,
blink::WebCryptoResult result) override;
void verifySignature(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
blink::WebVector<unsigned char> signature,
blink::WebVector<unsigned char> data,
blink::WebCryptoResult result) override;
void wrapKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& wrap_algorithm,
blink::WebCryptoResult result) override;
void unwrapKey(blink::WebCryptoKeyFormat format,
blink::WebVector<unsigned char> wrapped_key,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& unwrap_algorithm,
const blink::WebCryptoAlgorithm& unwrapped_key_algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoResult result) override;
void deriveBits(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& base_key,
unsigned int length_bits,
blink::WebCryptoResult result) override;
void deriveKey(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& base_key,
const blink::WebCryptoAlgorithm& import_algorithm,
const blink::WebCryptoAlgorithm& key_length_algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usages,
blink::WebCryptoResult result) override;
// 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.
std::unique_ptr<blink::WebCryptoDigestor> createDigestor(
blink::WebCryptoAlgorithmId algorithm_id) override;
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) override;
bool serializeKeyForClone(const blink::WebCryptoKey& key,
blink::WebVector<unsigned char>& key_data) override;
private:
DISALLOW_COPY_AND_ASSIGN(WebCryptoImpl);
};
} // namespace webcrypto
#endif // COMPONENTS_WEBCRYPTO_WEBCRYPTO_IMPL_H_
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