文章利用群盲签名技术设计了一个分布式银行电子现金系统，它的成员为各个银行。
In this paper, we design a system of distributed Banks issuing electronic cash by utilizing group blind signature.
本文提出一个新的称为限制性群盲签名的概念，并且指出了如何利用限制性群盲签名来构造多个银行参与发行的、公正的电子现金系统。
In this paper, we introduce a notion called restrictive blind group signature, then we construct a fair off-line e-cash system in the multiple bank model with both user and bank anonymity control.
论文借助群签名的思想，实现了电子现金的匿名性和无关联性，有效地保护了用户的私有信息。
In this paper, we propose a new efficient offline electronic cash scheme depend on the idea of group signature.
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