Secure and Efficient Proxy Signature Scheme in the Standard Model  

作　　者：GU Ke JIA Weijia CHEN Rongyuan LIU Xingbao 

机构地区：[1]School of Information Science and Engineering, Central South University, Changsha 410083, China [2]Department of Computer Science, City University of Hong Kong, Hong Kong, China [3]Modern Education Center, Hunan University of Commerce, Changsha 410205, China

出　　处：《Chinese Journal of Electronics》2013年第4期666-670,共5页电子学报（英文版）

摘　　要：Existing proxy signature schemes are not proved to have complete security in the provable security model for proxy signature＇s whether the schemes are secure needs to be further studied. We show a generalized prov- able security model for proxy signature. Comparing with Boldyreva＇s security model, we introduce Schuldt＇s work to our security model. We propose a secure proxy signa- ture scheme, which is based on Waters＇ signature scheme in the standard model. Comparing with other proxy signa- ture schemes having a reduction to CDH assumption in the standard model, our scheme is more secure and efficient.

关 键 词：Proxy signatures Security model Prov-able security~ Efficiency Computational Diffie-Hellman（CDH） assumption. 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TP309[自动化与计算机技术—计算机科学与技术]