A vehicle information security system with self-adaptation

To provide complete vehicle information protection mechanism, this work proposes a vehicle information security system (VISS) with self-adaptation. The VISS integrates the concept of role-based access control, so that it can support multiuser access mechanism to avoid illegal modification. Further, all the access control policies for the information are realized as hardware circuits, so that the VISS provides irregular access method to enhance the protection of vehicle information. To ensure the security of data transfers on the network and to meet real-time requirements, the cryptographic functions in the VISS are also implemented in hardware. By integrating the partial reconfiguration technique into the design, the VISS can dynamically adapt its hardware functions, including the cryptographic functions and the access control functions, to different system requirements. Our experiments have also demonstrated the VISS can accelerate by up to 3.75x the processing time required by using the software solution, even though the frequency of the VISS is much lower than that of software solution.