An Anonymous Authentication Scheme based on PMIPv6 for VANETs

With the rapid development of wireless network infrastructure and transportation industry, vehicular ad hoc networks (VANETs) have been paid more and more attention. Meanwhile, proxy mobile IPv6(PMIPv6), with its shorter handover delay and lower signaling overhead, is an ideal mobility management approach to exploit the advantages of VANETs. However, security issues become the main obstacle for the combination of PMIPv6 and VANETs. Unfortunately, most scholars' research focus on the efficiency and security during access authentication of vehicle node, while ignoring the privacy issues which may cause great impact on mobile users. In this paper, we put forward an anonymous authentication scheme based on PMIPv6 for VANETs. The scheme is equipped with pseudonyms, identity-based cryptographic mechanisms, and several salient authentication protocols. According to the security and performance analysis, the proposed scheme owns higher security and efficiency compared with the typical ones.