Efficient and secure message authentication in cooperative driving: A game-theoretic approach

Requirement of safety, roadway capacity and efficiency in vehicular network, which makes autonomous driving concept continue to be of interest. To achieve automated cooperative driving, vehicles form a platoon. For the authentication in vehicular platoons, efficiency and security are the two things of great significance. Cooperative authentication is a way to help recognize false identities and messages as well as saving resources. However, selfish behaviors of the vehicles may be caused by the concern of privacy leakage and unfair resources consuming. To deal with these weaknesses, we devised an enhanced cooperative authentication protocol based on mechanisms which discourages non-cooperating behavior. An infinitely repeated game for our designed protocol in is proposed to analyze the utility of all users to help analyse the threat of selfish behavior. We also proposed a method to optimize the system parameters in our designed protocol to achieve better efficiency and security.