一种新的基于可信第三方的离线电子现金系统  

A New Off-line Electronic Cash System Based on Trusted Third Party

作　　者：徐兰芳[1] 陈维[1] 

机构地区：[1]华中科技大学计算机学院,武汉430074

出　　处：《信息安全与通信保密》2006年第8期140-142,共3页Information Security and Communications Privacy

基　　金：国家自然科学基金资助项目(60203017)

摘　　要：在分析电子现金和电子钱包的基础上,引入可信第三方(简称TTP),提出一种同时具有可撤销匿名性和可恢复性的离线电子现金系统。该系统利用可信第三方可以实现撤销匿名性,以有效地打击电子现金不法使用者;并通过银行和第三方可恢复因计算机崩溃导致电子钱包丢失而失去的电子现金,是一种实用且高效的电子现金系统。With analyzing electronic cash and electronic wallet, this paper proposes an anonymity-revocable and recoverable off-line e-cash system based on trusted third party （TTP）. The anonymity can be revoked so as to punish the users who use e-cash illegally. With this system, each consumer can recover the lost money with the help of trusted third party, even if the computer has crashed and all the files are removed accidentally, or his electronic wallet has been lost. It is a useful and effective e-cash system.

关 键 词：电子现金 电子钱包 可信第三方 可撤销匿名性 可恢复性 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]