RING PROXY SIGNATURES  

作　　者：Wei Baodian Zhang Fangguo Chen Xiaofeng 

机构地区：[1]Department of Electronics and Communication Engineering, Sun Yat-Sen University, Guangzhou 510275, China [2]Department of Computer Science, Sun Yat-Sen University, Guangzhou 510275, China [3]Guangdong.Key Laboratory of Information Security Technology, Guangzhou 510275, China

出　　处：《Journal of Electronics(China)》2008年第1期108-114,共7页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 60403007, No. 60503006, No. 60572059);the Natural Science Foundation of Guangdong Province, China (No.05300706).

摘　　要：Proxy signatures have been used to enable the transfer of digital signing power within some context and ring signatures can be used to provide the anonymity of a signer. By combining the functionalities of proxy signatures and ring signatures, this paper introduces a new concept, named ring proxy signature, which is a proxy signature generated by an anonymous member from a set of potential signers. The paper also constructs the first concrete ring proxy signature scheme based on the provably secure Schnorr's signatures and two ID-based ring proxy signature schemes. The security analysis is provided as well.Proxy signatures have been used to enable the transfer of digital signing power within some context and ring signatures can be used to provide the anonymity of a signer. By combining the functionalities of proxy signatures and ring signatures, this paper introduces a new concept, named ring proxy signature, which is a proxy signature generated by an anonymous member from a set of potential signers. The paper also constructs the first concrete ring proxy signature scheme based on the provably secure Schnorr＇s signatures and two ID-based ring proxy signature schemes. The security analysis is provided as well.

关 键 词：Proxy signature Ring signature Ring proxy signature ID-based cryptography Bilinear parings 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]