一个新的有向门限签名方案  

A New Directed Threshold Signature Scheme

作　　者：文小华[1] 王相金[1] 沈忠华[1] 

机构地区：[1]杭州师范大学理学院,浙江杭州310036

出　　处：《杭州师范大学学报（自然科学版）》2012年第3期259-263,共5页Journal of Hangzhou Normal University(Natural Science Edition)

摘　　要：提出了一个新的有向门限签名方案,在该方案中,用户共享秘密由两部分组成,一部分是SDC中心发送给用户的,另一部分是用户自己秘密选取的.因此,该方案可以抵御系统人员的攻击,也可抵御n个用户的合谋攻击,满足了有向性和门限的性质,并利用交互式的零知识证明向第三方证明了群签名的有效性.This paper presented a new directed threshold signature scheme.In the scheme,the sharing secrets of users are composed of two parts,one part comes from SDC,and the other part is selected in private by users.Therefore,the scheme can resist the attack from the system staff as well as the conspiracy attack from the users.It can satisfy directed and threshold properties,and prove the validity of group signature to third party with interactive zero-knowledge proof.

关 键 词：有向签名 门限 零知识 拉格朗日插值公式 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]