Traceable Anonymous Authentication Scheme for Vehicular Ad-hoc Networks

In this paper, we proposed a novel anonymous authentication scheme in VANETs. Our scheme provides message authentication, anonymity, unlink ability, and trace ability of an end-user simultaneously. The unlink ability which enables privacy preservation and the trace ability which enables conditional tracking are contradictory. Compared with the existing work, we claim that our scheme has better performance in terms of storage, computation, and communication overhead.