A Fair Off-Line E-Cash System with Group Signature
会议名称：《The First Conference on Web Information System and Applications》
会议日期：2004年
学科分类：08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术]
基 金：Supported by the National Natural Science Funda-tion of China (90204015)
关 键 词：electronic cash anonymity control group signature
摘 要：正 This paper describes the research results and development of fair off-line e-cash systems so far, and points out that in these systems, the bank can compute the double-spender’s account secret key. thus the bank can impersonate the double-spender to withdraw from the double-spender’s account. This article utilizes anonymity control and group signature to address this shortcoming.