一个可计息的离线电子现金方案  

An Off-line Interest Countable Electronic Cash Scheme

作　　者：毕玉[1] 高虎明[1] 

机构地区：[1]天津财经大学信息系,天津300222

出　　处：《中国科学院研究生院学报》2006年第6期802-807,共6页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：天津市高校科技发展基金(20041602)资助

摘　　要：电子现金作为一种重要的电子支付手段,得到了深入广泛的研究.目前已经有很多种解决方案,但由于很多原因电子现金仍没有得到普及.其中的一个原因是消费者从银行账户中取出一定金额的电子现金后,银行不再为其支付利息,消费者损失了这部分利息.针对这一问题,本文提出了一个可计息的离线电子现金方案,该方案可计提取电子现金到支付期间的利息,弥补了消费者利息的损失,而且在离线的状态下完成电子现金的支付,减少了通信成本.E-cash （Electronic cash） is an important electronic payment tool, which is the bottleneck of e-commerce development. Most proposed c-cash schemes are unpractical although it has been studied for more than two decades. One of the shortcomings is that the interest of e-cash between drawing and consuming is lost. An off-line interest countable electronic cash scheme is proposed in this paper. In the scheme the e-cash＇ s interest can be counted from the time of customers drawing to paying. The communication cost is reduced due to its off-line environment.

关 键 词：电子现金 离散对数问题 匿名性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]