| // 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_DEVICE_TO_DEVICE_SECURE_CONTEXT_H_ |
| #define COMPONENTS_CRYPTAUTH_DEVICE_TO_DEVICE_SECURE_CONTEXT_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "components/cryptauth/secure_context.h" |
| #include "components/cryptauth/session_keys.h" |
| |
| namespace securemessage { |
| class Header; |
| } |
| |
| namespace cryptauth { |
| |
| class SecureMessageDelegate; |
| |
| // SecureContext implementation for the DeviceToDevice protocol. |
| class DeviceToDeviceSecureContext : public SecureContext { |
| public: |
| DeviceToDeviceSecureContext( |
| std::unique_ptr<SecureMessageDelegate> secure_message_delegate, |
| const SessionKeys& session_keys, |
| const std::string& responder_auth_message_, |
| ProtocolVersion protocol_version); |
| |
| ~DeviceToDeviceSecureContext() override; |
| |
| // SecureContext: |
| void Decode(const std::string& encoded_message, |
| const MessageCallback& callback) override; |
| void Encode(const std::string& message, |
| const MessageCallback& callback) override; |
| ProtocolVersion GetProtocolVersion() const override; |
| std::string GetChannelBindingData() const override; |
| |
| private: |
| // Callback for unwrapping a secure message. |callback| will be invoked with |
| // the decrypted payload if the message is unwrapped successfully; otherwise |
| // it will be invoked with an empty string. |
| void HandleUnwrapResult( |
| const DeviceToDeviceSecureContext::MessageCallback& callback, |
| bool verified, |
| const std::string& payload, |
| const securemessage::Header& header); |
| |
| // Delegate for handling the creation and unwrapping of SecureMessages. |
| std::unique_ptr<SecureMessageDelegate> secure_message_delegate_; |
| |
| // The symmetric key used for encryption. |
| const std::string encryption_key_; |
| |
| // The symmetric key used for decryption. |
| const std::string decryption_key_; |
| |
| // The [Responder Auth] message received from the remote device during |
| // authentication. |
| const std::string responder_auth_message_; |
| |
| // The protocol version supported by the remote device. |
| const ProtocolVersion protocol_version_; |
| |
| // The last sequence number of the message sent. |
| int last_encode_sequence_number_; |
| |
| // The last sequence number of the message received. |
| int last_decode_sequence_number_; |
| |
| base::WeakPtrFactory<DeviceToDeviceSecureContext> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeviceToDeviceSecureContext); |
| }; |
| |
| } // namespace cryptauth |
| |
| #endif // COMPONENTS_CRYPTAUTH_DEVICE_TO_DEVICE_SECURE_CONTEXT_H_ |