A Universal Composability Framework for Analysis of Proxy Threshold Signature  

作　　者：洪璇 李详学 龚征 陈克非 

机构地区：[1]Department of Computer Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China [2]School of Information Security Engineering,Shanghai Jiaotong University,Shanghai 200240,China [3]State Key Laboratory of Information Security,Graduate School of the Chinese Academy of Sciences,Beijing 100039,China [4]Distributed and Embedded Security Group,Faculty of EEMCS,University of Twente,7500 AE Enschede,the Netherlands

出　　处：《Journal of Shanghai Jiaotong university(Science)》2009年第1期107-111,共5页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.60703031,60703004);the National High Technology Research and Development Program(863)of China(No.2006AA01Z4220;the National Basic Research Program(973)of China(No.2007CB311201)

摘　　要：The universal composability framework is a new approach for designing and analyzing the security of cryptographic protocols.In this framework,the security of protocols is maintained under a general protocol composition operation.In the paper,we propose the universal composability framework for the analysis of proxy threshold signature and present a universally composable secure proxy threshold signature scheme which is the first one in this area.The proposed scheme is suitable for the mobile agents,which should migrate across different environment through network.Furthermore,we give the concrete analysis of the reduction to prove the security of the proposed scheme.The universal composability framework is a new approach for designing and analyzing the security of cryptographic protocols. In this framework, the security of protocols is maintained under a general protocol composition operation. In the paper, we propose the universal composability framework for the analysis of proxy threshold signature and present a universally composable secure proxy threshold signature scheme which is the first one in this area. The proposed scheme is suitable for the mobile agents, which should migrate across different environment through network. Furthermore, we give the concrete analysis of the reduction to prove the security of the proposed scheme.

关 键 词：proxy threshold signature universal composability RSA cryptosystem mobile agents 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论] TP309[自动化与计算机技术—计算机科学与技术]