AAAS: An Anonymous Authentication Scheme Based on Group Signature in VANETs
As special ad-hoc networks, vehicular ad-hoc networks (VANETs) support vehicles to communicate with each other via opportunistic wireless links. In order to protect privacy of drivers, vehicles registered in VANETs are required to authenticate and communicate with surrounding vehicles or roadside infrastructure anonymously. However, due to high-speed driving and wireless environment, it is vital to propose a privacy protection scheme that is able to balance security and efficiency.
... this paper proposes an anonymous authentication scheme in VANETs (AAAS). Specifically, we add region trust authority to provide more efficient anonymous authentication service for vehicles. Subsequently, group signature mechanism is adopted to achieve anonymity and conditional privacy. Moreover, security and performance analysis show that AAAS has higher security and efficiency. INDEX TERMS VANETs, group signature, anonymous authentication, SVO. SHAOCHENG GE received the B.E. and M.E. degrees from the College of Safety Science and Engineering, Liaoning Technology University, in 1996 and 2002, respectively, and the Ph.D. degree in mechanical power and engineering from Dalian Technology University, in 2006. He joined Liaoning Technology University. He is currently the Vice President of the College of Safety and Emergency Management Engineering, Taiyuan University of Technology. He is also a Professor and a Ph.D. Supervisor. His primary research interests include network security and emergency management. XUELI SHEN received the B.E. and M.E. degrees from the College