VANET中基于不经意传输和群签名的强隐私保护方案  

Strong privacy protection scheme based on oblivious transfer and group signature in VANET

作　　者：朱晓玲[1] 陆阳[1,2] 侯整风[1] 朱晓娟[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009 [2]安徽省矿山物联网与安全监控技术重点实验室,合肥230088

出　　处：《计算机应用研究》2014年第1期226-230,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(60873195);国家"863"计划资助项目(2011AA060406);安徽省自然科学基金项目(09041251)

摘　　要：隐私保护是部署VANET的重要需求,事故责任判定要求隐私可揭露,因此给出可追踪的VANET隐私保护方案。为解决已有方案中权威伪造签名和权威妥协后隐私泄露问题,采取不经意传输为车辆颁发私钥,基于秘密共享联合揭露身份。为确保高效的匿名通信,采用了群签名、批验证、撤销预处理方法。安全分析表明,方案在匿名性和健壮性方面优于已有方案;性能分析表明,方案通信和计算代价与已有方案相近,可有效应用于有强隐私保护需求的VANET安全通信。Privacy protection is an important requirement in vehicle networks. Meanwhile, privacy requires to be disclosed when a traffic accident happens. So the paper presented a traceable privacy protection scheme. In existing schemes the issues about authority forgery and authority leaks remained unresolved. So using the oblivious transfer protocol, the manage authority issued private keys. Based on secret sharing scheme, tracking authorities collaboratively revealed identities. It used the methods of group signature, batch verification and preprocessing revocation efficiently in anonymous communication. Security analysis shows that the scheme is superior to the existing schemes in terms of unforgeability and robustness. Performance analysis shows that the cost of communication and computation is similar to the existing schemes. So it will have effective applications in VANET.

关 键 词：车用自组网络 隐私保护 不经意传输 秘密共享 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]