On the Security of Remote Key Less Entry for Vehicles

With the rapid growth in the automobile industry and the advancement in the embedded technology, the traditional mechanical key for operating vehicles is gradually replaced by Remote Keyless Entry (RKE) system. Enabling RKE system in vehicles not only improves the security of car access but also facilitates convenience to users. At the same time, RKE system introduces many threats such as eavesdropping, relay, replay attack, On-board Diagnostic (OBD) port scan attack, key fob cloning, jamming and so on. In this paper, we discuss on the keyless car entry system, observe some security weaknesses in a recent RKE system and present a new RKE system. The proposed RKE system uses the notion of unclonable security module to minimize the OBD port scan attack including other known threats. The proposed RKE system achieves authentication of car as well as key fob by preserving privacy of the communicating entities. The security analysis and experimental results show that the proposed RKE system is secure and practical with respect to efficiency and user convenience.