Efficient and multi-level privacy-preserving communication protocol for VANET

Authors:
Hu Xiong;Zhong Chen;Fagen Li
Affiliations:
Key Laboratory of Network and Software Security Assurance of the Ministry of Education, Institute of Software, School of Electronics Engineering and Computer Science, Peking University, Beijing 10 ...;Key Laboratory of Network and Software Security Assurance of the Ministry of Education, Institute of Software, School of Electronics Engineering and Computer Science, Peking University, Beijing 10 ...;State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China and School of Computer Science and Engineering, University of Electronic Sci ...
Venue:
Computers and Electrical Engineering
Year:
2012

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Abstract

In this paper, we introduce an efficient and multi-level conditional privacy preservation authentication protocol in vehicular ad hoc networks (VANETs) based on ring signature. The proposed protocol has three appealing characteristics: First, it offers conditional privacy preservation authentication: while every receiver can verify that a message issuer is an authorized participant in the system only a trusted authority can reveal the true identity of a message sender. Second, it is equipped with multi-level countermeasure: each vehicle can select the degree of privacy according to its own requirements. Third, it is efficient: our system outperforms previous proposals in message authentication and verification, cost-effective identity tracking in case of a dispute, and low storage requirements. We demonstrate the merits gained by the proposed protocol through extensive analysis.