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一种基于智能卡的可分电子现金系统 被引量:1

Divisiable E-cash System Based on Smart Card
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摘要 设计了一种加入智能卡的基于可信第三方的可分电子现金系统,通过离线的可信第三方实现电子现金的可分性、不可伪造性、交易的公平性和可撤销匿名性;通过加入Smart卡,提前防止了电子现金的超额花费和重复花费。在每次支付时只需支付一个电子现金,提高了支付效率。方案的安全性基于Schonorr签名,离散对数的难解性以及单向Hash函数的存在性。 A divisiable E-cash system with smart card based on TTP was proposed. With the help of TTP the scheme present good divisibility, fair anonymity, unforgeability and anonymity revocation. This Ecash system can avoid double-spending and over-spending by using smart card. It spends only one cash in one time, which decreases the computation of paying. The security of system is based on the Schonorr signature, the discrete logarithm assumption and the existence of the one-way Hash function assumption.
出处 《青岛大学学报(自然科学版)》 CAS 2009年第2期54-57,76,共5页 Journal of Qingdao University(Natural Science Edition)
关键词 电子现金 可分性 智能卡 可信第三方 E-cash divisibility smart card TTP
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参考文献12

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共引文献24

同被引文献16

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