一种实用的无证书两方认证协议  

Practical Certificateless Authenticated Two-party Key Protocol

作　　者：舒剑[1,2] 

机构地区：[1]电子科技大学计算机科学与工程学院,四川成都611731 [2]江西财经大学电子商务系,江西南昌330013

出　　处：《小型微型计算机系统》2010年第9期1889-1893,共5页Journal of Chinese Computer Systems

基　　金：国家"八六三"高技术研究发展计划项目(2009AA012415)资助

摘　　要：Lippold等提出可证安全的无证书两方认证协议,但协议要求较大的计算量.基于Cash,Kiltz和Shoup提出的双diffie-hellman问题,提出新的无证书认证密钥协商协议.与Lippold的协议相比,新协议具有相同的消息带宽,并且降低了计算复杂度.最后,基于CDH假设和BDH假设,在随机预言模型下证明了协议的安全性.Recently,Lippold et al.proposed certificateless authenticated two-party key agreement with provable security,their scheme suffers from computation burden.Basesd on twin diffie-hellman problem introduced by Cash,Kiltz and Shoup,A new scheme using bilinear pair is proposed.When compared with Lippold＇s scheme,the proposed protocol,with the same message bandwidth,achieves efficiency in computational cost.The security of the proposed scheme has been proven in the random oracle model under CDH assumption and BDH assumption.

关 键 词：无证书密码系统 双diffie-hellman问题 双线性映射 随机预言机 

分 类 号：TN393[电子电信—物理电子学]