计算机工程 ›› 2013, Vol. 39 ›› Issue (8): 161-165.doi: 10.3969/j.issn.1000-3428.2013.08.034

• 安全技术 • 上一篇    下一篇

一种可追溯的车载自组网隐私保护认证协议

杨 涛1,2,胡建斌1,2,陈 钟1,2   

  1. (1. 北京大学高可信软件技术教育部重点实验室,北京 100871;2. 清华大学生命科学学院,北京 100084)
  • 收稿日期:2012-02-06 出版日期:2013-08-15 发布日期:2013-08-13
  • 作者简介:杨 涛(1976-),男,博士研究生,主研方向:密码学,车载自组网隐私保护;胡建斌,副教授、博士;陈 钟,教授、博士生导师
  • 基金项目:
    国家自然科学基金资助项目“传感器网络中以数据为中心的安全机制研究”(60873239)

A Traceable Privacy-preserving Authentication Protocol for Vehicular Ad-hoc Network

YANG Tao 1,2, HU Jian-bin 1,2, CHEN Zhong 1,2   

  1. (1. Key Lab of High Confidence Software Technologies of MoE, Peking University, Beijing 100871, China; 2. School of Life Sciences, Tsinghua University, Beijing 100084, China)
  • Received:2012-02-06 Online:2013-08-15 Published:2013-08-13

摘要: 利用标准模型下的单跳代理重签名技术,提出一个可追溯的车载自组网(VANET)隐私保护认证协议,其中,交通管理中心TRC授权路边单元RSU作为代理,将车载单元OBU签名的消息以TRC的名义进行代理重签名,从而防止根据签名追踪OBU,并能在TRC的协助和授权下,进一步通过RSU的配合准确快速地追溯消息签名的真实产生者。数字签名和时间戳技术的应用使协议能够抵御伪造消息和重放消息攻击。分析结果表明,该协议能够达到VANET条件隐私的目标,满足标准模型下代理重签名的安全性要求,与其他经典协议相比,存储开销更小,运行效率更高。

关键词: 车载自组网, 代理重签名, 隐私保护, 消息认证, 可追溯性

Abstract: This paper introduces a traceable privacy-preserving authentication protocol for Vehicular Ad-hoc Network(VANET) based on a single hop Proxy Re-signature(PRS) in the standard model. It achieves some good features: The TRC designates the RSU translating signatures computed by the OBU into one which validness can be verified by the TRC’s public key. Therefore, it is prevented that vehicles are traced by their signatures on the messages, and attacks are thwarted by using an endorsement mechanism based on signatures. Security analysis shows that the protocol can achieve good conditional privacy target of VANET. Performance analysis shows that the protocol can also provide an efficient way to relieve workload by less storage and communication cost compared to the other classic protocols.

Key words: Vehicular Ad-hoc Network(VANET), Proxy Re-signature(PRS), privacy-preserving, message authentication, traceability

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