Secure in-vehicle systems against Trojan attacks

Recently, driving support technologies, such as inter-vehicle and road-to-vehicle communication technologies, have been practically used. However, a problem has been pointed out that when a vehicle is connected with an external network, the safety of the vehicle is threatened. As a result, the security of vehicle control systems, which greatly affects vehicle safety, has become more important than ever. Ensuring the security of in-vehicle systems becomes an important priority, similar to ensuring conventional safety. The present study proposes a controller area network (CAN) communications method that uses a lightweight cipher to realize secure in-vehicle systems. The present study also constructs an evaluation system using a field-programmable gate array (FPGA) board and a radio-controlled car. This is used to verify the proposed method.