Netinfo Security ›› 2024, Vol. 24 ›› Issue (7): 983-992.doi: 10.3969/j.issn.1671-1122.2024.07.001

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A Certificateless Anonymous Authentication Key Agreement Protocol for VANET

LIU Yidan, MA Yongliu(), DU Yibin, CHENG Qingfeng   

  1. Institute of Cyberspace Security, Information Engineering University, Zhengzhou 450001, China
  • Received:2024-03-27 Online:2024-07-10 Published:2024-08-02

Abstract:

In the vehicular ad-hoc network (VANET), nodes communicate on open wireless channels, making them vulnerable to malicious attacks. Ensuring the integrity of message and anonymity of identities during vehicle communication has become crucial. In response to the problem that existing WZQ protocol cannot resist ephemeral key leakage attack, this article proposed a certificateless anonymous authentication key agreement protocol for VANET named iWZQ. iWZQ used certificateless signature technology to solve complex key storage and key escrow problems, and separated identity authentication and traffic message verification to avoid the problem of frequent checking of message revocation list. In addition, the security of this protocol has been proven using provable theory and Scyther tool. Comparing the proposed protocol with other protocols, the performance analysis results show that iWZQ effectively reduces computational time and communication costs while improving security.

Key words: VANET, certificateless signature, anonymity, key agreement protocol

CLC Number: