Journal on Communications ›› 2022, Vol. 43 ›› Issue (9): 134-147.doi: 10.11959/j.issn.1000-436x.2022167

• Papers • Previous Articles     Next Articles

Distributed anonymous authentication scheme based on the blockchain in VANET

Xia FENG1, Kaiping CUI1, Qingqing XIE2, Liangmin WANG3   

  1. 1 School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
    2 School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang 212013, China
    3 School of Cyber Science and Engineering, Southeast University, Nanjing 211110, China
  • Revised:2022-08-17 Online:2022-09-25 Published:2022-09-01
  • Supported by:
    The National Natural Science Foundation of China(61902157);The National Natural Science Foundation of China(62002139)

Abstract:

Identity authentication is the first line of defense against malicious vehicles spreading false traffic information.However, due to the limited network bandwidth and computing power in the vehicle ad-hoc network (VANET), the existing schemes cannot meet the requirements of efficient authentication, nor can achieve fast and anonymous traceability of malicious vehicles.In view of this, a distributed anonymous authentication scheme based on the blockchain was proposed.The zero-knowledge proof was used to quickly and anonymously authenticate the identity of vehicles in VANET, and the pairing-free-based aggregating signature was used to provide fast batch verification, effectively reducing the computational burden generated during the authentication process.In addition, the regional trusted authority (RTA) could realize the anonymous traceability of malicious vehicle identities, and quickly revoke their identities by using the block chain.It could also update the short-term anonymous identities of vehicles based on local keys in time to ensure that vehicles anonymity and freshness of signatures.Security analysis and simulation show that the proposed scheme can satisfy various security requirements such as anonymity and unlinkability, and can effectively reduce computing and communication overhead, which is at least 27.28% higher in performance than similar schemes.

Key words: VANET, anonymous authentication, blockchain, zero-knowledge proof, pairing-free

CLC Number: 

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