University of California San Francisco
The authors propose a security mechanism to help prevent cyber-attacks (masquerade and replay) in vehicles with architecture based on Controller Area Network (CAN). They focus on CAN as it will likely continue being used in upcoming in-vehicle architectures. The CAN protocol contains no direct support for secure communications. Retrofitting the protocol with security mechanisms poses several challenges given the very limited data rates available (e.g., 500kbps) since bus utilization may significantly increase. In this paper, they focus on a security mechanism which keeps the bus utilization as low as possible.