一种新的三方认证密钥协商协议_2011.pdf

28 7 V ol . 2 8 N o. 7 2011 7 MICROEL ECT R ON ICS COM PU T ER J uly 2011 潘 操 丁 辉 王洪元 ( 213164) : 目前大部分基于身份的三方认证密钥协商协议都存在安全 陷 文中在Xu 等人提出的加密方案的基础 上 设计了 一种基于身份的三方认证密钥协商协议. 该协议的安全性建立在BDDH 假设基础上 经安全性分析 协 议具有已知密钥安全 P KG 前向安全 并能抵抗未知密钥共享攻击和密钥泄露伪装攻击 因此该协议是一个安全 的三方密钥协商协议. : 基于身份的; 双线性对; 三方认证密钥协商协议 : T P39 : A : 1000 - 7180 ( 2011) 07- 0 14 3- 0 3 A New Identity- Based Tripartite Authenticated Key Agreement Protocol P A N Cao DI N G H ui W A N G H on gyuan ( Schoo l of I nf o rm atio n Chang zhou U niver sity Chang zhou 213164 China) Abstract: N ow most o f the tr ipa rtite authenticated key ag reem ent pro tocol s h ave been pro ven to be in secur e. W e desig n t he new identity - based tr ip art ite authent icated key ag r eem ent pr oto co l it is b ased on the secure IBE schem e by Peng. T his pro tocols securit y based on bilinear decisional Diff ie- H ellm an assumptio n. T his pro tocol could pr o v ide know n key secur ity PK G f o rw ard secr ecy key - comprom ise imper sonation r esilience and unknow n key - sh ar e resilience so it s a secure tripar tite authent icated key ag reem ent pr oto co l. Key words: identit y- b ased ; bilinear p air ings; t rip art ite aut henticated key agr eem ent pro tocol ( manint hemiddle at tack) . 1 . [ 4 5] . [ 6] . . BDD H ( Bilinear D eci . sional D iff ie- H el lman) .