Secure Automotive Gateway - Secure Communication for Future Cars

The main focus of the paper is to secure the on-board communication of automobiles. The current trend in the automotive domain is to incorporate technologies known from the consumer segment (e.g., WLAN, Ethernet) into the car. This makes it easier for an attacker to attack the on-board networks of the car, even without having physical access. To detect attacks against the automotive networks such as CAN and FlexRay, we introduce the concept of the so called "security gateway" which is part of the automotive architecture and is located on transition points, where different networks connect with each other. A language was created to specify the correct application behavior and to configure the security gateway. Using this representation of the application behavior the security gateway not only detects failures caused by an attacker but also detects failures caused by malfunctions.