Provably Secure and Efficient Proxy Signature with Untrustworthy Proxy Signer  

作　　者：王志伟 郑世慧 王励成 杨义先 胡正名 

机构地区：[1]Information Security Center,State Key Laboratory of Networking and Switching Technology,Beijing University of Post and Telecommunications,Beijing 100876,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2008年第6期675-678,共4页上海交通大学学报（英文版）

基　　金：the National Basic Research Program(973) of China (No. 2007CB31074);the National Natural Science Foundation of China (No. 90718001)

摘　　要：Proxy signature has drawn great concerns. However, there still remains a challenge to construct a provably secure and efficient proxy signature scheme. In this paper, we propose an efficient proxy signature scheme based on factoring, and prove that it is secure in the random oracle. Furthermore, we present a new type of proxy signature, called Proxy Signature with Untrustworthy Proxy Signer, and construct a concrete scheme.Proxy signature has drawn great concerns.However, there still remains a challenge to construct a provably secure and effcient proxy signature scheme.In this paper, we propose an effcient proxy signature scheme based on factoring, and prove that it is secure in the random oracle.Furthermore, we present a new type of proxy signature, called Proxy Signature with Untrustworthy Proxy Signer, and construct a concrete scheme.

关 键 词：proxy signature FACTORING untrustworthy proxy signer 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]