ABSTRACT. Vehicular Ad Hoc Networks is a kind of special wireless ad hoc network, which has the characteristics of high node mobility and fast topology changes. The Vehicular Networks can provide wide variety of services, ranges from safety and crash avoidance to internet access and multimedia applications. Attacking and misusing such network could cause destructive consequences. It is therefore necessary to integrate security requirements into the design of VANETs and defend VANET systems against misbehaviour, in order to ensure correct and smooth operations of the network. In this paper, I propose a security system for VANETs to achieve privacy desired by vehicles and traceability required by law enforcement authorities, in addition to satisfying fundamental security requirements including authentication, nonrepudiation, message integrity, and confidentiality. Moreover, we propose a privacy-preserving defense technique for network authorities to handle misbehaviour in VANET access, considering the challenge that privacy provides avenue for misbehaviour. The proposed system employs an identitybased cryptosystem where certificates are not needed for authentication. I show the fulfilment and feasibility of our system with respect to the security goals and efficiency.
1 INTRODUCTION VEHICULAR ad hoc networks (VANETs) are receiving increasing attentions from academic and deployment efforts from industry, due to the various applications and potential tremendous benefits they offer for future VANET users. Safety information exchange enables life-critical applications, such as the alerting functionality during intersection traversing and lane merging, and thus, plays a key role in VANET applications. Valueadded services can enhance drivers’ traveling experience by providing
References: [1] M. Raya and J-P. Hubaux, “Securing Vehicular Ad Hoc Networks,” J. Computer Security, special issue on security of ad hoc and sensor networks, vol. 15, no. 1, pp. 39-68, 2007. [2] J.Y. Choi, M. Jakobsson, and S. Wetzel, “Balancing Auditability and Privacy in Vehicular Networks,” Proc. First ACM Int’l WorkshopQoS and Security for Wireless and Mobile Networks (Q2SWinet ’05), pp. 79-87, Oct. 2005. [3] J. Sun, C. Zhang, and Y. Fang, “An Id-Based Framework Achieving Privacy and Non-Repudiation in Vehicular Ad Hoc Networks,” Proc. IEEE Military Comm. Conf., pp. 1-7, Oct. 2007. [4] X. Lin, X. Sun, P.-H. Ho, and X. Shen, “GSIS: A Secure and Privacy-Preserving Protocol for Vehicular Communications,”IEEE Trans. Vehicular Technology, vol. 56, no. 6, pp. 3442-3456, Nov. 2007. [5] M. Raya, P. apadimitratos, I. Aad, D. Jungels, and J.-P. Hubaux,“Eviction of Misbehaving and Faulty Nodes in Vehicular Networks,” IEEE J. Selected Areas Comm., vol. 25, no. 8, pp. 15571568,Oct. 2007. [6] C. Gamage, B. Gras, B. Crispo, and A.S. Tanenbaum, “An Identity Based Ring Signature Scheme with Enhanced Privacy,” Proc.Second Int’l Conf. Security and Privacy in Comm. Networks (SecureComm ’06), Aug. 2006. [7] P. Tsang, M.H. Au, A. Kapadia, and S.W. Smith, “Blacklistable Anonymous Credentials: Blocking Misbehaving Users without TTPs,” Proc. ACM Conf. Computer and Comm. Security (CCS),pp. 72-81, 2007. [8] J. Sun and Y. Fang, “A Defense Technique against Misbehavior in VANETs Based on Threshold Authentication,” Proc. IEEE Military Comm. Conf., Nov. 2008. AUTHORS BIOGRAPHY V.Surendhiran received his Bachelor of Engineering degree in Computer Science and Engineering stream from Anna University of Technology Coimbatore. He is currently pursuing Master of Engineering in Computer Science at Angel College of Engineering and Technology affiliated to Anna University of Technology, Chennai. His area of interest Network security and hacking. P.Rajeshwari received her Bachelor of Engineering degree in Computer Science and Engineering stream from Anna University of Trichy. She is currently pursuing Master of Engineering in Computer Science at Angel College of Engineering and Technology affiliated to Anna University of Technology, Chennai. Her area of interest Networking and Cloud computing. S.Padmavathi received her Bachelor of Engineering degree in Computer Science and Engineering stream from Anna University of Technology Coimbatore. She is currently pursuing Master of Engineering in Computer Science at Angel College of Engineering and Technology affiliated to Anna University of Technology, Chennai. Her area of interest Network security, Grid computing and Wireless Technology. A.Naveenkumar received his Bachelor of Engineering degree in Computer Science and Engineering stream from Anna University of Technology Coimbatore. He is currently pursuing Master of Engineering in Computer Science at Angel College of Engineering and Technology affiliated to Anna University of Technology, Chennai. His area of interest Vehicular Ad-hoc Networks, Network security and Theory of computation.