A Universal Composability Framework for Analysis of Proxy Threshold Signature

作者：HONG Xuan~ LI Xiang xue~ GONG Zheng~ CHEN Ke fei~ ( Department of Computer Science and Engineering Shanghai Jiaotong University Shanghai China; School of Information Security Engineering Shanghai Jiaotong University Shanghai China; State Key Laboratory of Information Security Graduate School of the Chinese Academy of Sciences Beijing China; Distributed and Embedded Security Group Faculty of EEMCS University of Twente AE Enschede the Netherland

来源：Journal of Shanghai Jiaotong University (Science), 2009, (01): 107-111.

• proxy threshold signature
• universal composability
• RSA cryptosystem
• mobile agents

<正>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.

• 出版日期2009-2-15
• 单位上海交通大学; University of Twente; 中国科学院大学