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A Dynamic and Efficient Self-Certified Authenticated Group Key Agreement Protocol for VANET
  • +3
  • Xuefei Cao,
  • Lanjun Dang,
  • Kai Fan,
  • Xingwen Zhao,
  • Yulong Fu,
  • Yingzi Luan
Xuefei Cao

Corresponding Author:[email protected]

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Lanjun Dang
Kai Fan
Xingwen Zhao
Yulong Fu
Yingzi Luan


The development of Internet of things has spawned the vehicular ad hoc network (VANET), which facilitates the safe and comfortable driving. The communications in VANET should be protected to deter against message leakage and modifications. To solve the security issues in VANET communications, we present a dynamic and efficient authenticated group key agreement (AGKA) protocol SC-AGKA with conditional privacy employing the self-certified cryptosystem, and prove its security based on the computational Diffie-Hellman problem. Our SC-AGKA protocol establishes a group key among multiple group users and achieves conditional privacy for the group users. Based on our SC-AGKA protocol, we propose an authentication and group key agreement protocol applying the design in VANET. Additionally, we also notify that through performance comparisons, our protocol has higher security and efficiency in computation and communication compared to other AGKA designs.
20 Feb 2024Submitted to TechRxiv
20 Feb 2024Published in TechRxiv