A Proxy Blind Signature Scheme and an Off-Line Electronic Cash Scheme  

作　　者：LIU Jianwei LIU Jianhua QIU Xiufeng 

机构地区：[1]School of Electronics and Information Engineering, Beihang University [2]Department of Mathematics and Computer, Gannan Normal College

出　　处：《Wuhan University Journal of Natural Sciences》2013年第2期117-125,共9页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(61272501);the National Key Basic Research Program(973Program)(2012CB315905);the Specialized Research Fund for the Doctoral Program of Higher Education(20091102110004)

摘　　要：To support withdrawing and storing money from all levels of the bank for the customers in the real world, in this paper, we propose a proxy blind signature scheme and an off-line e-cash scheme based on the new proxy blind signature scheme. The pro- posed proxy blind signature is proven secure in the random oracle model under chosen-target computational Diffie-Hellman assump- tions, and the e-cash scheme can satisfy the security requirements of unforgeability, anonymity, and traceability.To support withdrawing and storing money from all levels of the bank for the customers in the real world, in this paper, we propose a proxy blind signature scheme and an off-line e-cash scheme based on the new proxy blind signature scheme. The pro- posed proxy blind signature is proven secure in the random oracle model under chosen-target computational Diffie-Hellman assump- tions, and the e-cash scheme can satisfy the security requirements of unforgeability, anonymity, and traceability.

关 键 词：off-line electronic cash proxy blind signature ran-dom oracle model electronic commerce 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] F830.49[自动化与计算机技术—计算机科学与技术]