| // Copyright 2018 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 DEVICE_FIDO_CABLE_FIDO_CABLE_DEVICE_H_ |
| #define DEVICE_FIDO_CABLE_FIDO_CABLE_DEVICE_H_ |
| |
| #include <array> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/component_export.h" |
| #include "base/containers/span.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/optional.h" |
| #include "crypto/aead.h" |
| #include "device/fido/ble/fido_ble_device.h" |
| |
| namespace device { |
| |
| class BluetoothAdapter; |
| class FidoBleConnection; |
| class FidoBleFrame; |
| |
| class COMPONENT_EXPORT(DEVICE_FIDO) FidoCableDevice : public FidoBleDevice { |
| public: |
| // Encapsulates state FidoCableDevice maintains to encrypt and decrypt |
| // data within FidoBleFrame. |
| struct COMPONENT_EXPORT(DEVICE_FIDO) EncryptionData { |
| EncryptionData(std::string session_key, base::span<const uint8_t, 8> nonce); |
| EncryptionData(EncryptionData&& data); |
| EncryptionData& operator=(EncryptionData&& other); |
| ~EncryptionData(); |
| |
| std::string session_key; |
| std::array<uint8_t, 8> nonce; |
| crypto::Aead aes_key{crypto::Aead::AES_256_GCM}; |
| uint32_t write_sequence_num = 0; |
| uint32_t read_sequence_num = 0; |
| |
| DISALLOW_COPY_AND_ASSIGN(EncryptionData); |
| }; |
| |
| using FrameCallback = FidoBleTransaction::FrameCallback; |
| |
| FidoCableDevice(BluetoothAdapter* adapter, std::string address); |
| // Constructor used for testing purposes. |
| FidoCableDevice(std::unique_ptr<FidoBleConnection> connection); |
| ~FidoCableDevice() override; |
| |
| // FidoBleDevice: |
| CancelToken DeviceTransact(std::vector<uint8_t> command, |
| DeviceCallback callback) override; |
| void OnResponseFrame(FrameCallback callback, |
| base::Optional<FidoBleFrame> frame) override; |
| base::WeakPtr<FidoDevice> GetWeakPtr() override; |
| |
| void SendHandshakeMessage(std::vector<uint8_t> handshake_message, |
| DeviceCallback callback); |
| |
| void SetEncryptionData(std::string session_key, |
| base::span<const uint8_t, 8> nonce); |
| FidoTransportProtocol DeviceTransport() const override; |
| |
| private: |
| FRIEND_TEST_ALL_PREFIXES(FidoCableDeviceTest, |
| TestCableDeviceSendMultipleRequests); |
| FRIEND_TEST_ALL_PREFIXES(FidoCableDeviceTest, |
| TestCableDeviceErrorOnMaxCounter); |
| |
| base::Optional<EncryptionData> encryption_data_; |
| base::WeakPtrFactory<FidoCableDevice> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FidoCableDevice); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_FIDO_CABLE_FIDO_CABLE_DEVICE_H_ |