不使用双线性对的无证书认证协议  

Certificateless Authentication Protocol Without Pairing

作　　者：朱辉[1] 李晖[1] 谭示崇[1] 王育民[1] 

机构地区：[1]西安电子科技大学计算机网络与信息安全教育部重点实验室,西安市太白南路2号710071

出　　处：《武汉大学学报（信息科学版）》2010年第5期574-577,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(60772136;60803151);国家863计划资助项目(2007AA01Z435);高等学校学科创新引智计划资助项目(B08038)

摘　　要：基于离散对数问题,提出了一种不使用双线性对的无证书签密方案。利用该签密方案,提出了一种高效的、不使用双线性对的无证书认证协议,并在CK模型下提供安全性证明。分析表明,该协议具有双向实体认证、完美的向前保密性等安全属性,满足了认证的安全需求。此外,该认证协议仅需进行1次对称加密、3次指数运算和1轮通信即可完成,通信开销小,计算量较低。A new certificateless signcryption scheme without using the bilinear pairings was presented based Discrete-Logarithm firstly,which was proved security in the random oracle model.Secondly,with the proposes signcryption scheme Canetti-Krawczyk model,the author proposes an efficient certificateless authentication and key exchange protocol without pairings.The security analysis of the proposed protocol in the implementation plan with the Canetti-Krawczyk model is presented in this paper.The results show that the proposed protocol is session-key secure with perfect forward secrecy.Moreover,the implementation of the protocol is just 1 encryption operation,3 exponent operations and twice communications.

关 键 词：认证协议 无证书 签密 可证明安全 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]