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<p>To tackle the urgent challenges of communication efficiency, robust security, and user privacy protection in vehicular ad hoc networks (VANETs), this paper proposes a strongly anonymous privacy-preserving scheme based on group signatures. Our scheme supports batch verification and immediate revocation, making it suitable for the trusted authority-roadside unit-vehicle (TA-RSU-Vehicle) system architecture. By incorporating efficient batch verification technology, it enhances signature verification efficiency, reduces system overhead, and verifies its reliability. Combining the Chinese Remainder Theorem with Schnorr’s signature idea, even a vehicle of limited resources can check by itself the legitimacy of the message signer in the system due to our instant revocation mechanism. Roadside units (RSUs) are introduced to alleviate the workload of the trusted authority (TA). The strong anonymity design protects vehicle privacy. After a comprehensive security analysis and performance evaluation, our scheme demonstrates reliable batch verification, immediate revocation, and a secure system structure with good performance.</p>

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Strong anonymous batch authentication scheme against sybil attack in VANET

  • 期刊论文

  • 发表日期：

    2025年8月3日

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  • Zeyu Man,
  • Senshan Pan,
  • Zhiwei Xu,
  • Mengping Ye

摘要

To tackle the urgent challenges of communication efficiency, robust security, and user privacy protection in vehicular ad hoc networks (VANETs), this paper proposes a strongly anonymous privacy-preserving scheme based on group signatures. Our scheme supports batch verification and immediate revocation, making it suitable for the trusted authority-roadside unit-vehicle (TA-RSU-Vehicle) system architecture. By incorporating efficient batch verification technology, it enhances signature verification efficiency, reduces system overhead, and verifies its reliability. Combining the Chinese Remainder Theorem with Schnorr’s signature idea, even a vehicle of limited resources can check by itself the legitimacy of the message signer in the system due to our instant revocation mechanism. Roadside units (RSUs) are introduced to alleviate the workload of the trusted authority (TA). The strong anonymity design protects vehicle privacy. After a comprehensive security analysis and performance evaluation, our scheme demonstrates reliable batch verification, immediate revocation, and a secure system structure with good performance.