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安全问题是车辆网络研究中关注的热点。女巫攻击通过假冒车辆身份,而危胁到车辆的行驶安全。通过路边设施发布的数字签名,基于车辆的行驶线路特征及车辆的信用等级,提出了一种基于车辆驾驶路线和公钥证书的女巫节点检测机制。在车辆驶过路边设施时,主动向路边设施请求获取授权时间戳,车辆行驶过程中所获取的多个授权时间戳,构成车辆的路线凭证。验证方通过车辆合法性的验证以及车辆之间驾驶路线差异的对比,以检测出女巫节点,消除女巫攻击对网络造成的危害。仿真结果表明,检测率可达96%。
Security is a hot topic in the research of vehicle network. Witch attacks through the identity of fake vehicles, and endanger the safety of vehicles driving. Based on the characteristics of the driving route of the vehicle and the credit rating of the vehicle, a digital signature based on the roadside facilities is proposed to detect the witch node based on the vehicle driving route and public key certificate. As the vehicle passes by the roadside facilities, it takes the initiative to request to obtain authorization timestamps from the curbside facilities and multiple authorization timestamps obtained during the vehicle traveling to form the route documents of the vehicles. The verifier verifies the legitimacy of the vehicle and compares the driving route differences between the vehicles to detect the witch node and eliminate the harms caused by the witch attack on the network. Simulation results show that the detection rate of up to 96%.