A Secure PUF-Based Authentication Protocol for Remote Keyless Entry Systems in Cars

This paper first investigates various attacks against Remote Keyless Entry (RKE) systems in cars. Then, we propose an authentication protocol based on Physical Unclonable Functions (PUFs) to secure RKE systems. Detailed security analysis demonstrates that the proposed protocol prevents common attacks against RKE systems such as replay and RollJam attacks as well as the recently devised RollBack attack. To the best of our knowledge, this is the first protocol that addresses the RollBack attack. We also provide formal proofs to demonstrate the proposed protocol's security. A performance analysis shows that the proposed authentication protocol is cost-effective.