FlexRay总线的安全加密认证研究

Research on Security Encryption and Authentication of FlexRay Bus

随着车联网技术的日渐成熟,车载总线网络系统不再是独立、安全的通信网络,车载总线网络系统可通过OBDⅡ网络测试仪、导航、WiFi等系统与外界连接,易泄露汽车上固有的总线网络信息,车载总线网络被黑客入侵后驾驶员也有失去汽车控制权限的可能性。为了提高车载总线网络的安全性,笔者分析了FlexRay车载总线网络系统的安全缺陷和攻击手段。基于AES-128与SHA-1算法提出了一种加密认证协议,并通过CANoe环境下进行了仿真实验,提高了车载总线网络数据的安全性和可靠性。

With the maturity of the vehicle network technology,the vehicle bus network system is no longer an independent and safe communication network.The vehicle bus network system can be connected with the outside world through OBDⅡnetwork tester,navigation,WiFi and other systems,which is easy to reveal the inherent bus network information on the vehicle.After the vehicle bus network is intruded by hackers,the driver also has the possibility of losing the control of the vehicle.In order to improve the security of on-board bus network,the author analyzed the security defects and attack methods of FlexRay on-board bus network system.Based on AES-128 and SHA-1 algorithm,an encryption and authentication protocol is proposed,and simulation experiments are carried out under CANoe environment to improve the security and reliability of vehicle bus network data.