Abstract—FlexRay is a high fault-tolerant vehicle bus with real-time and flexibility. Most of the current research on FlexRay security issues focuses on bus topology. However, we found that once a hacker successfully invades one of the nodes in the bus topology system, he can monitor the communication content of other nodes or send false control information to any node. This vulnerability of the bus topology increases the risk of the system. Aiming at the characteristics of flexible topology structure of FlexRay, this paper proposes a network security scheme of vehicle FlexRay based on active star topology. This article combines key agreement, data encryption, data compression, and message authentication. Compared with other security protocols, it can reduce the verification steps and reduce the calculation time by 45.78% on the basis of ensuring the security of nodes.
Index Terms—In-vehicle network, security, FlexRay, authentication
The authors are with the College of Engineering of Yanbian University, Yanji, China (e-mail: ynxu@ybu.edu.cn).
Cite: Jin-Hui Piao, Yu-Jing Wu, Yi-Hu Xu, and Yi-Nan Xu, "Research of FlexRay Network Security based on Star Topology," International Journal of Future Computer and Communication vol. 11, no. 4, pp. 88-94, 2022.
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