AAAS: An Anonymous Authentication Scheme Based on Group Signature in VANETs

Yanji Jiang,Shaocheng Ge,Xueli Shen

doi:10.1109/access.2020.2997840

Abstract

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. Consequently, 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.

Highlights

With the rapid development of wireless communication technology, intelligent transportation systems (ITSs) plays a crucial role in improving transportation safethy and enhancing producivity [1]
We propose an anonymous authentication scheme based on group signature in vehicular ad-hoc networks (VANETs) (AAAS)
This paper proposes an anonymous authentication scheme based on group signature in VANETs

Summary

INTRODUCTION

With the rapid development of wireless communication technology, intelligent transportation systems (ITSs) plays a crucial role in improving transportation safethy and enhancing producivity [1]. AAAS adds region trust authority (RTA) as group manager to provide anonymous authentication and communication services for vehicles, which can effectively improve the computation and communication costs of TA and relieve the pressure of RSU with low computation and storage capacity. Due to its high computation cost and low efficiency, it is difficult to be used in anonymous authentication in VANETs. Han et al proposed a novel identity-based group signature scheme [26], which makes a balance between the security and effciency. RTA: In order to alleviate TA computation and communication pressure, in AAAS network architecture, RTA is added to manage all RSUs in each area and provides anonymous authentication and communication services for vehicles.

V2I INITIAL AUTHENTICATION PROTOCOL

SECURITY PROOF AND ANALYSIS

PERFORMANCE ANALYSIS

CONCLUSION