文献类型：会议论文

英文题名：An Improved (t,n) Threshold Proxy Signature Scheme Based on RSA Cryptosystem

作者：Wang, Yuping[1];Hu, Lishuan[1];Yu, Xin[1]

第一作者：王育平

通讯作者：Yu, X[1]

机构：[1]Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China

第一机构：北京联合大学城市轨道交通与物流学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China.|[1141751]北京联合大学城市轨道交通与物流学院;[11417]北京联合大学;

会议论文集：2nd ISECS International Colloquium on Computing, Communication, Control and Management (CCCM 2009)

会议日期：AUG 08-09, 2009

会议地点：Sanya, PEOPLES R CHINA

语种：英文

外文关键词：Conspiracy attack; Digital signature; RSA Cryptosystem; Threshold proxy signature

摘要：A (t,n) threshold proxy signature scheme enables a proxy signer to sign messages on behalf of the original signer. Hwang et al. recently proposed an practical (t, n) threshold proxy signature scheme. In this paper we propose an efficient threshold proxy signature scheme based on RSA signature scheme, which improves security of their scheme. Our scheme divides the document M into m blocks and add some redundant bits to each message block. It is embedded in the proxy signature issuing phase to avoid the conspiracy attack. The proposed signature scheme satisfies all the secure requirements and is efficient.