RSU based efficient vehicle authentication mechanism for VANETs

Security and privacy are the two major concerns in VANETs. Due to highly dynamic environment in VANETs computation time for authentication is more. At the same time most of the privacy preserving schemes is prone to Sybil attacks. In this paper we propose a lightweight authentication scheme between vehicle to RSU, vehicle to vehicles and to build a secure communication system. In this method we make use of timestamps approach and also reduce the computation cost for authentication in highly dense traffic zones. The privacy of the vehicle is preserved by not disclosing its real identity.