车载自组织网络隐私保护机制研究

发布时间：2018-04-05 07:45

本文选题：车载自组织网　切入点：隐私保护　出处：《西华大学》2015年硕士论文

【摘要】：为了减少交通事故和提高驾驶者的驾驶水平,各国政府和科研机构进行了诸多研究。车载自组织网络由此应运而生。通过车辆间的通信以及车辆与路边单元的通信,车载自组织网络能够收集整理交通事故和道路信息,并将这些信息传送给网络中的所有成员。目前在设计和实施车载自组织网络中一个关键问题便是隐私保护。一方面,我们希望车辆发出的消息是可认证的:另一方面又不希望消息在认证的过程中泄露车辆的隐私。很明显,隐私保护和消息的可认证性是冲突的。此外,对车辆的隐私保护不应该被滥用,当消息出现争议时,消息的发送者能够被追踪到。本文旨在解决车载自组织网络中的条件隐私保护问题,在总结和分析现有方案的基础上,提出了两种方案,本文的主要内容包括以下几个方面:1.提出了一种基于实时更新伪名证书的VANETs隐私保护通信方案。该方案中车辆借助路边单元的帮助,在车辆想要更新一个伪名证书,或者现有的所有伪名证书都将过期时,即可生成伪名证书,该方案将车辆的身份认证和证书的发放分开交给车辆管理中心和路边单元。同时方案给出了未过期伪名证书的撤销方案,以及追踪争议车辆身份的方案。最后给出了安全性分析和性能分析。2.提出了一种基于条件匿名环签名算法的VANETs隐私保护通信方案。该方案的设计基于一种条件匿名的环签名算法,文中给出了该算法在车载网络中的具体实现,包括匿名通信以及追踪方案。该方案的特别之处在于对恶意车辆的追踪过程中,并不需要依赖于路边单元和车辆管理中心。3.使用NS2和SUMO工具对车载自组织网络中使用的802.11p协议进行了仿真,并对不同车辆数下的包投递率、延迟和吞吐量指标给出了分析。
[Abstract]:In order to reduce traffic accidents and improve drivers' driving standards, governments and scientific research institutions have carried out many studies.Vehicle-borne self-organizing network emerges as the times require.Through the communication between vehicles and the communication between vehicles and roadside units, the vehicle-borne ad hoc network can collect and organize traffic accidents and road information, and transmit these information to all members of the network.Privacy protection is a key issue in the design and implementation of vehicular ad hoc networks.On the one hand, we want the message from the vehicle to be authenticated; on the other hand, we do not want the message to reveal the privacy of the vehicle during the authentication process.It is clear that privacy protection and message authentication are conflicting.In addition, the privacy protection of the vehicle should not be abused, when the message is controversial, the sender of the message can be tracked.This paper aims to solve the problem of conditional privacy protection in vehicular ad hoc networks. Based on the summary and analysis of the existing schemes, two schemes are proposed. The main contents of this paper include the following aspects: 1.This paper presents a VANETs privacy protection communication scheme based on updating pseudonym certificates in real time.In this scheme, with the help of the roadside unit, a pseudonym certificate can be generated when the vehicle wants to update a pseudonym certificate, or when all existing pseudonym certificates will expire.The scheme gives vehicle identification and certification separately to the vehicle management center and the roadside module.At the same time, the scheme of revocation of the unexpired pseudonym certificate and the scheme of tracing the identity of the disputed vehicle are given.Finally, the security analysis and performance analysis. 2. 2.This paper presents a VANETs privacy protection communication scheme based on conditional anonymous ring signature algorithm.The design of the scheme is based on a conditional anonymity ring signature algorithm. In this paper, the implementation of the algorithm in vehicle network is given, including anonymous communication and tracking scheme.The special feature of this scheme is that it does not need to rely on roadside unit and vehicle management center.The 802.11p protocol used in vehicle-borne ad hoc networks is simulated by using NS2 and SUMO tools, and the packet delivery rate, delay and throughput under different vehicle numbers are analyzed.
【学位授予单位】：西华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U495;TN929.5;TP391.44

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