盲化的基于无证书的可验证加密签名方案  

Blind and certificateless verifiably encrypted signature scheme

作　　者：李艳红[1] 高德智[1] 冯文文[1] 

机构地区：[1]山东科技大学信息科学与工程学院,山东青岛266590

出　　处：《计算机应用》2013年第12期3519-3521,3535,共4页journal of Computer Applications

基　　金：青岛市科技发展计划项目(11-2-4-6-(1)-jch)

摘　　要：可验证加密签名方案的公平性完全由仲裁者中立问题决定,这样就降低了交换签名的安全性。为了应对这种情况,利用双线性对的性质,结合无证书公钥密码体制与可验证加密数字签名,设计了一种盲化的基于无证书的可验证加密签名方案,方案中的仲裁者不能直接恢复原始签名,从而加强了交换签名的安全性。在假设离散对数问题(DLP)和计算Diffie-Hellman问题(CDHP)难解的前提下,该方案在随机预言模型中是可证安全的。The fairness of verifiable encrypted signature scheme is completely determined by the arbitrators neutral problem, which reduces the security of signature exchange. In order to deal with this issue, using the properties of bilinear pairings and combining with certificateless public key cryptography and verifiable encrypted signature, a blind verifiable encrypted signature was designed without certificate. The adjudicator in this scheme cannot restore the original signature directly, thereby the security of exchange signature protocols was enhanced. The proposed scheme was also provably secure in the random oracle module under Discrete Logarithm Problem （DLP） and Computational Differ-Hellman Problem （CDHP） assumption.

关 键 词：无证书公钥密码体制 可验证加密签名 仲裁者 双线性对 随机预言模型 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]