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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 COMPONENTS_CRYPTAUTH_AUTHENTICATOR_H_
#define COMPONENTS_CRYPTAUTH_AUTHENTICATOR_H_
#include <memory>
#include "base/callback_forward.h"
namespace cryptauth {
class SecureContext;
// Interface for authenticating the remote connection. The two devices
// authenticate each other, and if the protocol succeeds, establishes a
// SecureContext that is used to securely encode and decode all messages sent
// and received over the connection.
// Do not reuse after calling |Authenticate()|.
class Authenticator {
public:
// The result of the authentication protocol.
enum class Result {
SUCCESS,
DISCONNECTED,
FAILURE,
};
// Feature to be used in |WireMessage|s sent during the authentication
// handshake.
static const char kAuthenticationFeature[];
virtual ~Authenticator() {}
// Initiates the authentication attempt, invoking |callback| with the result.
// If the authentication protocol succeeds, then |secure_context| will be
// contain the SecureContext used to securely exchange messages. Otherwise, it
// will be null if the protocol fails.
typedef base::Callback<void(Result result,
std::unique_ptr<SecureContext> secure_context)>
AuthenticationCallback;
virtual void Authenticate(const AuthenticationCallback& callback) = 0;
};
} // namespace cryptauth
#endif // COMPONENTS_CRYPTAUTH_AUTHENTICATOR_H_
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