智能网联汽车CAN总线信息安全测试方法
2021-10-13向民奇韦天文邓宇刘书帆
向民奇 韦天文 邓宇 刘书帆
摘 要:目前CAN总线仍是智能网联汽车车内通信的主要方式,直接与车内各ECU控制模块相连组成整个车内网,由于CAN总线通信为广播式、缺乏报文数据保密、缺乏报文数据来源验证以及缺乏DoS攻击的保护特性。若车辆遭受网络入侵渗透到车内CAN总线网络时各个ECU模块将面临严重的威胁,严重将引发车辆安全事故。如何有效规避车辆信息安全问题,则需要加强对车辆的信息安全测试,及时发现存在的安全问题并进行修复。为此本文总结提出了针对智能网联汽车CAN总线信息安全测试的方法。主要内容为:1、应用报文的模糊测试、重放攻击测试、DoS攻击测试;2、诊断报文的测试安全分析。
关键词:智能网联汽车 信息安全 CAN总线 OBD接口 安全测试
Can Bus Cyber Security Test Method of Intelligent Connected Vehicle
Xiang Minqi Wei Tianwen Deng Yu Liu Shufan
Abstract:At present, can bus is still the main way of in vehicle communication of intelligent connected vehicle, and it is directly connected with each ECU control module in the vehicle to form the whole in vehicle network. Can bus communication is broadcast type, lack of message data confidentiality, lack of message data source verification and lack of DoS attack protection characteristics. If the vehicle suffers from network intrusion and penetrates the CAN bus network inside the vehicle, each ECU module will face a serious threat, which will lead to serious vehicle safety accidents. To effectively avoid the vehicle cyber security problems, we need to strengthen the vehicle cyber security testing, timely find the existing security problems and repair. Therefore, this paper summarizes and puts forward the testing method of CAN bus cyber security for intelligent connected vehicles. The main contents are as follows: 1. Fuzzy test of application message, replay attack test, DoS attack test; 2. Test security analysis of diagnostic message.
Key words:intelligent connected vehicle, cyber security, can bus, OBD interface, security testing
1 引言
今年來汽车网络安全事件频发[1-2]。车辆CAN总线作为整个车联网链路上最底层的通讯网络,直接参与控制车辆各传感器、ECU以及执行器,其可控性直接影响整车安全。车联网与传统网络被攻击所造成的结果有明显的区别,车联网被成功攻破后不仅可能是后端TSP服务平台的不可用、车厂或者用户的个人隐私敏感信息的泄露,还可能直接引发车辆安全事故,造成社会危害。因此对于智能网联汽车即使在传统的通信网络被攻破后,车内CAN总线仍需自身具备安全防御能力。为此国内外学者特意针对汽车网络安全模糊测试做了研究[3-4]。本文的主要内容是针对智能网联汽车CAN总线提出了一套完整的测试项目、测试方法及要求。……
