BLAC: A Blockchain-based Lightweight Access Control Scheme in Vehicular Social Networks

Yuting Zuo; Li Xu; Yuexin Zhang; Chenbin Zhao; Zhaozhe Kang

Paper 2023/1005

BLAC: A Blockchain-based Lightweight Access Control Scheme in Vehicular Social Networks

Yuting Zuo

, Fujian Normal University, Fujian provincial Key Laboratory of Network Security and Cryptology

Li Xu

, Fujian Normal University, Fujian provincial Key Laboratory of Network Security and Cryptology

Yuexin Zhang, Fujian Normal University, Fujian provincial Key Laboratory of Network Security and Cryptology

Chenbin Zhao, Wuhan University, Key Laboratory of Aerospace Information Security and Trusted Computing, Ministry of Education

Zhaozhe Kang, Fujian Normal University, Fujian provincial Key Laboratory of Network Security and Cryptology

Abstract

Vehicular Social Networks (VSNs) rely on data shared by users to provide convenient services. Data is outsourced to the cloud server and the distributed roadside unit in VSNs. However, roadside unit has limited resources, so that data sharing process is inefficient and is vulnerable to security threats, such as illegal access, tampering attack and collusion attack. In this article, to overcome the shortcomings of security, we define a chain tolerance semi-trusted model to describe the credibility of distributed group based on the anti tampering feature of blockchain. We further propose a Blockchain-based Lightweight Access Control scheme in VSNs that resist tampering and collusion attacks, called BLAC. To overcome the shortcomings of efficiency, we design a ciphertext piece storage algorithm and a recovery one to achieve lightweight storage cost. In the decryption operation, we separate a pre-decryption algorithm based on outsourcing to achieve lightweight decryption computation cost on the user side. Finally, we present the formal security analyses and the simulation experiments for BLAC, and compare the results of experiments with existing relevant schemes. The security analyses show that our scheme is secure, and the results of experiments show that our scheme is lightweight and practical.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Preprint.
Keywords: Vehicular social networks Blockchain Access control Lightweight
Contact author(s): qbx20210079 @ yjs fjnu edu cn
xuli @ fjnu edu cn
yxzhang @ fjnu edu cn
chenbinzhao96 @ 163 com
qbx20210078 @ yjs fjnu edu cn
History: 2023-06-29: approved; 2023-06-28: received; See all versions
Short URL: https://ia.cr/2023/1005
License: CC BY

BibTeX

@misc{cryptoeprint:2023/1005,
      author = {Yuting Zuo and Li Xu and Yuexin Zhang and Chenbin Zhao and Zhaozhe Kang},
      title = {BLAC: A Blockchain-based Lightweight Access Control Scheme in Vehicular Social Networks},
      howpublished = {Cryptology ePrint Archive, Paper 2023/1005},
      year = {2023},
      note = {\url{https://eprint.iacr.org/2023/1005}},
      url = {https://eprint.iacr.org/2023/1005}
}