中文摘要：

车载自组网是一种基于车辆通信的移动自组网络,是智能交通的发展方向。认证过程中的隐私保护问题是其面临的核心问题。文章对车载自组网面临的隐私威胁进行分析,对面向车辆身份保护和面向车辆位置保护方面所采用的关键技术进行讨论,指出未来车载自组网隐私保护问题应从建立车辆信用评价机制、使用密码学算法进行位置隐私保护和应用可否认的密码学等方面加强研究。

英文摘要：

Vehicular Ad Hoc networks（ VANETs） is a kind of mobile ad hoc networks,which is applied in vehicles communication. They are also the basis of intelligent transportation system. However,VANETs incur the identity disclosure and tracing. Thus the privacy-preserving communication in VANETs is to be the key issue. This work analyzes the privacy and the security model in VANETs,surveys the privacy-preserving technologies in VANETs and presents the future research issues.