基于LUC一般访问结构上的秘密共享方案及其安全性  

Secret Sharing Scheme with General Access Structures Based on LUC and its Security

作　　者：庞辽军[1] 李慧贤[2] 王育民[1] 

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,西安710071 [2]大连理工大学计算机科学与工程系,大连116024

出　　处：《计算机科学》2006年第5期121-123,共3页Computer Science

基　　金：国家973项目资助课题(G1999035805);"十五"军事通信技术预研项目资助课题(Y1010122)

摘　　要：提出了一个基于 LUC 公钥算法的一般访问结构上的秘密共享方案。它使用参与者的私钥作为各自的秘密份额,分发者无需进行秘密份额的分配。在秘密重构过程中,每个合作的参与者只需提交一个伪份额而不必暴露其私钥,同时方案提供了预防和检测欺骗的能力。该方案可以用来共享任意多个秘密,而不必更新各参与者的秘密份额。方案的安全性是基于 LUC 算法以及 Shamir 门限方案的安全性。Based on the LUC public-key algorithm, a new secret sharing scheme with general access structures is proposed in this paper. In this scheme, each participant＇s private-key is used as his secret shadow and the secret dealer doesn＇t have to distribute any secret shadow, in the recovery phase, each cooperative participant only needs to submit a pseudo-share instead of his private-key and anyone is allowed to check whether a cooperative participant provides the true information or not immediately. The secret shadows do not need to be changed when sharing multiple secrets. The security of this scheme is based on the security of the LUC algorithm and Shamir＇s threshold scheme.

关 键 词：秘密共享 访问结构 安全性 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]