2. Electronic Control Unit Overview

The Electronic Control Unit (ECU) acts as a data sender to the Connectivity Control Unit (CCU). The ECU runs the following services:

• A instance of LTK-STK key exchange protocol. It receives via CAN securely Long-Term keys (LTKs) and Short-Term keys (STKs).

• MixCAN sender/slave, which authenticated CAN frames based on a set of preconfigured CAN ids. It leverages STKs for authentication tags computation.

• MQTT Broker, to enable communication between services and to allow easy future extensions and integration of other services.

2.1. Requirements

The following requirements must be meet before continuing configuring the ECU. The steps below are described in the Testbed dependencies page.

• Virtual CAN (vcan0) configured

• Mosquitto installed and configured with required usernames and passwords

• CAN interface connected and configured

• Compiled TPM2 dependencies