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Automotive Engineering ›› 2024, Vol. 46 ›› Issue (2): 300-309.doi: 10.19562/j.chinasae.qcgc.2024.02.012

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Efficient Group Key Distribution Scheme Based on Quantum Random Numbers in VANETs

Qin Shi1,2,Liu Shan1,2,Teng Cheng1,2(),Qiang Liu1,2,Chuansu Wang3,Xing Zhang3   

  1. 1.School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei  230009
    2.Intelligent Transportation Vehicle-Road Collaborative Engineering Research Center of Anhui Province,Hefei  230000
    3.Chery Automobile Co. ,Ltd. ,Wuhu  241000
  • Received:2023-06-24 Revised:2023-07-30 Online:2024-02-25 Published:2024-02-23
  • Contact: Teng Cheng E-mail:cht616@hfut.edu.cn

Abstract:

To address the problem of high communication overhead and low security of key distribution in the near-field communication of VANETs, an efficient quantum group key distribution scheme based on quantum random numbers is proposed in this paper. In this scheme, Firstly, the anonymous credentials of the vehicle are jointly generated by quantum random numbers at the vehicle side and the cloud side, and zero-knowledge proof is used to achieve mutual identity recognition between the vehicle and the road side, which protects the privacy of the vehicle. Then, a two-stage group key achieves the update of the group key, i.e. two key parameters at the roadside and the cloud side. The group key reduces the signaling overhead by half and greatly shortens the group key issuance time while ensuring forward and backward security. Finally, the security of the scheme is demonstrated by security analysis and performance analysis.

Key words: VANETs, anonymous authentication, group key, information security