VANET中基于SM9密码算法的聚合签名方案  

AGGREGATE SIGNATURE SCHEME BASED ON SM9 CRYPTOGRAPHIC ALGORITHM IN VANET

作　　者：安涛 马文平[1] 刘小雪 An Tao;Ma Wenping;Liu Xiaoxue(State Key Laboratory of Integrated Business Network,Xidian University,Xi’an 710071,Shaanxi,China)

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《计算机应用与软件》2020年第12期280-284,321,共6页Computer Applications and Software

基　　金：国家自然科学基金项目(61373171);国家重点研发计划重点专项(2017YFB0802400);西安电子科技大学研究生创新基金支撑项目(5001-20109195456);高等学校学科创新引智计划项目(B08038)。

摘　　要：针对车辆自组织网络(VANET)中存在的车辆隐私泄露和信息认证过程复杂的问题,基于国产密码SM9算法设计一种新的聚合签名方案。SM9密码算法是基于身份的密码体制,解决了公钥密码体制中证书管理和密钥托管的问题。利用假名代替车辆的真实身份参与整个签名过程,从而很好地保护了车辆的隐私。认证过程利用了聚合签名技术,实现了批量验证,大大提高了认证的效率。在随机预言机(Random Oracle)模型下,证明了方案在适应性选择消息和身份攻击下是抗存在性伪造的。与相关文献的方案相比,该方案在保证安全性的前提下,具有较高的性能,更加适用于VANET。Aiming at the problems of vehicle privacy leakage and complex information authentication process in VANET,this paper designs a new aggregation signature scheme based on SM9 algorithm.SM9 cryptosystem is an identity-based cryptosystem,which solves the problems of certificate management and key escrow in public key cryptosystem.The pseudonym was used to replace the real identity of the vehicle to participate in the whole signature process,thus the privacy of the vehicle was well protected.The authentication process used aggregate signature technology to realize batch verification and greatly improved the efficiency of authentication.In the random oracle model,it is proved that the scheme is resistant to existential forgery under adaptive selection message and identity attack.Compared with the related literature,this scheme has higher performance on the premise of ensuring security,and is more suitable for VANET.

关 键 词：VANET SM9密码算法 聚合签名 隐私保护 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]