An Improved Proxy Multi-Signature Scheme  

作　　者：GULi-ze ZHANGSheng YANGYi-xian 

机构地区：[1]CollegeofInformationEngineering,BeijingUniversityofPostsandTelecommunications,Beijing100876,P.R.China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2005年第1期10-14,共5页中国邮电高校学报（英文版）

基　　金：This work is supported by the Natural Science Foundation of China (No.60372094;No.90204017) and"973"project of China (No.G1999035804).

摘　　要：Based on the Kim-like's proxy multi-signature scheme, an improved proxymulti-signature scheme is proposed. The new scheme overcomes the two problems in the Kim-like'sproxy multi-signature scheme: (1) Security issue ( every original signer can forge a valid proxymulti-signature for any message); (2) Efficiency issue ( both the size of the proxy multi-signatureand the efficiency of signature checking are dependent on the number of the original signers).Based on the Kim-like's proxy multi-signature scheme, an improved proxymulti-signature scheme is proposed. The new scheme overcomes the two problems in the Kim-like'sproxy multi-signature scheme: (1) Security issue ( every original signer can forge a valid proxymulti-signature for any message); (2) Efficiency issue ( both the size of the proxy multi-signatureand the efficiency of signature checking are dependent on the number of the original signers).

关 键 词：proxy signature MULTI-SIGNATURE proxy multi-signature SECURITY highefficiency 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]