基于匿名交换的VANET隐私保护方案研究

发布时间：2018-05-01 03:07

本文选题：车载自组织网 + 位置隐私保护　；参考：《昆明理工大学》2017年硕士论文

【摘要】：车载自组织网络(VANET)包括车与车、车与基础设施之间的无线通信,为车辆或者驾驶员提供周边车辆和道路通行状况等信息,包括交通事故预警、娱乐、辅助驾驶、Internet接入等服务,构成了未来智能交通系统(ITS)最重要的部分。但是由于车载自组织网络是通过无线网络进行通信的,和一般的移动自组网相比,规模庞大,成员复杂,无线信道开放和移动轨迹可预见等特点,会不可避免地遭受很多的威胁,安全形势严峻。VANET为车辆提供的各种服务的前提是需要车辆周期性地广播信标报文,报文中需携带车辆的实时位置和身份等信息,如果这些信息泄露会严重威胁用户的隐私安全。为保护车辆的位置隐私,现有工作主要采用Mix-zone、PIR、k匿名和Group-navigation 等方案。论文分析了 VANET的安全和隐私方面面临的威胁、需求以及挑战,并对车辆位置隐私保护关键问题展开深入研究。针对现有的车载自组织网络(VANET)位置隐私保护方案在匿名更新时受到时间和邻居数目限制的问题,提出了一种基于动态生成组的匿名交换方案(PSDG)。在该方案中车辆在同一组内交换匿名,并沿着移动路径累积所有的匿名混合的机会,最大程度地提高位置隐私保护效果。此外,本文采用单向哈希链动态生成两个匿名栈,不仅降低了匿名管理的成本,也保证了匿名交换过程的隐私。为了验证该方案的有效性,我们通过仿真实验来评估PSDG方案的性能。仿真和分析结果表明该方案能够显著降低车辆被追踪的概率,提高车辆位置隐私保护效果。
[Abstract]:The vehicle auto organization network (VANET) includes the wireless communication between the car and the vehicle, the vehicle and the infrastructure, providing the vehicle or the driver with the traffic and road traffic conditions, including traffic accident warning, entertainment, auxiliary driving, Internet access and other services, which constitute the most important part of the future intelligent transportation system (ITS). But because of the car The organization network is carried through the wireless network. Compared with the normal mobile ad hoc network, it is huge, complex, the wireless channel is open and the mobile trajectory is foreseeable. It will inevitably suffer a lot of threats. The precondition of.VANET for various services provided by the vehicle is that the vehicle needs to be cyclical. The message of the broadcast beacon needs to carry the real-time location and identity of the vehicle in the message. If the information is leaked, it will seriously threaten the privacy of the users. In order to protect the privacy of the vehicle's location, the existing work mainly uses Mix-zone, PIR, K anonymity and Group-navigation. The paper analyzes the security and privacy aspects of VANET. Threats, demands and challenges are studied and the key issues of vehicle location privacy protection are studied. In view of the existing problem that the VANET location privacy protection scheme is restricted by the number of time and neighbours in the anonymity update, a dynamic generation group based anonymous switching scheme (PSDG) is proposed. The vehicles Exchange anonymity in the same group, and accumulate all the anonymous mixing opportunities along the mobile path to maximize the effect of location privacy protection. In addition, this paper dynamically generates two anonymous stacks using a one-way hash chain, which not only reduces the cost of anonymous management, but also guarantees the privacy of anonymous exchange process. In order to verify the scheme The performance of the PSDG scheme is evaluated by simulation experiments. The simulation and analysis results show that the proposed scheme can significantly reduce the probability of vehicle tracking and improve the effect of vehicle location privacy protection.

【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U463.6;TP309

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