Abstract—With combination between the control systems of vehicle and Internet technology, the in-vehicle network itself is no longer a local area network with security, but faced with great threat from external world. Pay attention to FlexRay, a security protocol composed with data encryption, data authentication and key distribution are produced. Besides, a data compression method was proposed to reduce the real time problem caused by added security designs. Invoking the CANoe software and Freescale S12XF MCU, a simulated in-vehicle bus system was established to evaluate the designs, which showed a robust ability to defense normal attacks and the real time influence was decrease by 7.54% and 6.23% in transmit side and receive side respectively.

Index Terms—Network security, data compression, FlexRay, electronic control unit.

Yi-Nan Xu, Meng-Zhuo Liu, Shi-Nan Wang, Yu-Jing Wu, and Yi-Hu Xu are with Division of Electronic and Communication Engineering, College of Engineering, Yanbian University, Yanji 133002, China.

Cite:Yi-Nan Xu, Meng-Zhuo Liu, Shi-Nan Wang, Yu-Jing Wu, Yi-Hu Xu, "Research of Security Protocol and Data Compression Method for In-vehicle FlexRay Network," International Journal of Computer and Communication Engineering vol. 9, no. 1, pp. 18-32, 2020.

Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).