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// Copyright 2015 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 NET_SSL_THREADED_SSL_PRIVATE_KEY_H_
#define NET_SSL_THREADED_SSL_PRIVATE_KEY_H_
#include <stdint.h>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string_piece.h"
#include "net/ssl/ssl_private_key.h"
namespace base {
class TaskRunner;
}
namespace net {
// An SSLPrivateKey implementation which offloads key operations to a background
// task runner.
class ThreadedSSLPrivateKey : public SSLPrivateKey {
public:
// Interface for consumers to implement to perform the actual signing
// operation.
class Delegate {
public:
Delegate() {}
virtual ~Delegate() {}
// These methods behave as those of the same name on SSLPrivateKey. They
// must be callable on any thread.
virtual Type GetType() = 0;
virtual std::vector<SSLPrivateKey::Hash> GetDigestPreferences() = 0;
virtual size_t GetMaxSignatureLengthInBytes() = 0;
// Signs |input| as a digest of type |hash|. On success it returns OK and
// sets |signature| to the resulting signature. Otherwise it returns a net
// error code. It will only be called on the task runner passed to the
// owning ThreadedSSLPrivateKey.
virtual Error SignDigest(Hash hash,
const base::StringPiece& input,
std::vector<uint8_t>* signature) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(Delegate);
};
ThreadedSSLPrivateKey(scoped_ptr<Delegate> delegate,
scoped_refptr<base::TaskRunner> task_runner);
// SSLPrivateKey implementation.
Type GetType() override;
std::vector<SSLPrivateKey::Hash> GetDigestPreferences() override;
size_t GetMaxSignatureLengthInBytes() override;
void SignDigest(Hash hash,
const base::StringPiece& input,
const SignCallback& callback) override;
private:
~ThreadedSSLPrivateKey() override;
class Core;
scoped_refptr<Core> core_;
scoped_refptr<base::TaskRunner> task_runner_;
base::WeakPtrFactory<ThreadedSSLPrivateKey> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ThreadedSSLPrivateKey);
};
} // namespace net
#endif // NET_SSL_THREADED_SSL_PRIVATE_KEY_H_
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