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Efficient and secure authentication is crucial for verifying message integrity and sender identity in VANETs, especially across multiple trust domains. We propose two advanced solutions: CD-BASA and EPP-GAS. CD-BASA utilizes blockchain, accumulators, and interplanetary file systems to enable streamlined cross-domain batch authentication, significantly reducing identity verification costs with a novel multi-accumulator batch proof algorithm, improving authentication overhead by 18.2% and proof cost by 69.9%. EPP-GAS focuses on vehicle platooning (VP), employing an extended blockchain model and Shamir’s threshold scheme for anonymous group authentication, achieving 31% higher efficiency in cross-domain group authentication and 43.9% lower communication overhead. Both schemes outperform existing methods in security, efficiency, and resource utilization.

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Efficient and Privacy-Preserving Authentication in VANETs

  • 章节

  • 发表日期：

    2025年

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  • Yingjie Xia,
  • Xuejiao Liu,
  • Huihui Wu,
  • Qichang Li

摘要

Efficient and secure authentication is crucial for verifying message integrity and sender identity in VANETs, especially across multiple trust domains. We propose two advanced solutions: CD-BASA and EPP-GAS. CD-BASA utilizes blockchain, accumulators, and interplanetary file systems to enable streamlined cross-domain batch authentication, significantly reducing identity verification costs with a novel multi-accumulator batch proof algorithm, improving authentication overhead by 18.2% and proof cost by 69.9%. EPP-GAS focuses on vehicle platooning (VP), employing an extended blockchain model and Shamir’s threshold scheme for anonymous group authentication, achieving 31% higher efficiency in cross-domain group authentication and 43.9% lower communication overhead. Both schemes outperform existing methods in security, efficiency, and resource utilization.