IMPROVEMENT OF NONREPUDIABLE THRESHOLD MULTI-PROXY THRESHOLD MULTI-SIGNATURE SCHEME WITH SHARED VERIFICATION  

作　　者：Xie Qi Wang Jilin Yu Xiuyuan 

机构地区：[1]College of Science, Hangzhou Normal University, Hangzhou 310036, China [2]School of Information, Zhejiang University of Finance ＆ Economics, Hangzhou 310036, China [3]Department of Mathematics and Physics, Quzhou College, Quzhou 324000, China

出　　处：《Journal of Electronics(China)》2007年第6期806-811,共6页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.10671051);the Natural Science Foundation of Zhejiang Province (No.Y105067).

摘　　要：In 2005, Bao, et al. [Appl. Math. and Comput., vol.169, No.2, 2005] showed that Tzeng, et al.’s nonrepudiable threshold multi-proxy multi-signature scheme with shared verification was insecure, and proposed an improved scheme with no Share Distribution Center (SDC). This paper shows that Bao, et al.’s scheme suffers from the proxy relationship inversion attack and forgery attack, and pro- poses an improvement of Bao, et al.’s scheme.In 2005, Bao, et al. [Appl. Math. and Comput., vol.169, No.2, 2005] showed that Tzeng, et al.＇s nonrepudiable threshold multi-proxy multi-signature scheme with shared verification was insecure, and proposed an improved scheme with no Share Distribution Center （SDC）. This paper shows that Bao, et al.＇s scheme suffers from the proxy relationship inversion attack and forgery attack, and proposes an improvement of Bao, et al.＇s scheme.

关 键 词：Digital signature Proxy signature Threshold proxy signature Threshold multi-proxy threshold multi-signature Threshold verification 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]