A New （t, n） Threshold Signature Scheme Withstanding the Conspiracy Attack

作     者：XIE Qi, YU Xiu-yuan Department of Mathematics,Zhejiang University. Hangzhou 310027. Zhejiang,China: School of Information and Engineering, Hangzhou Teachers College. Hangzhou ,310012. Zhejiang, China Hangzhou Teachers College, Hangzhou 310012, Zhejiang, China 

会议名称：《The 1st Chinese Conference on Trusted Computing and Information Security》

会议日期：2005年

学科分类：08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China (10271037) 

关 键 词：cryptography threshold signature conspiracy attack identifier tracing 

摘      要：正 A conspiracy attack is proposed to show that Wang-Li’s scheme is insecure, because any t or more group members can impersonate other t members to sign any message without holding the responsibility. To avoid the conspiracy attack, this paper presents a new （t,n） threshold signature scheme with traceable signers.