| 基于群签名的离线电子现金方案 |
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| 引用本文： | 张兴兰,聂荣.基于群签名的离线电子现金方案[J].计算机工程与应用,2005,41(33):211-212. |
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| 作者姓名： | 张兴兰 聂荣 |
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| 作者单位： | 北京工业大学计算机学院,北京,100022;北京邮电大学信息工程学院,北京,100876 |
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| 摘 要： | 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。电子现金的形式由两个签名组成:用户签名和银行签名。前者保证了电子现金的私有性和不可伪造性,后者保证了交易的有效实施。由于电子现金容易被复制,银行需保存电子现金的某些特征以避免电子现金的非法使用。该方案增强了电子现金方案的安全性,简化了盲签名体制下的电子现金实现过程。
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| 关 键 词： | 电子现金 群签名 安全性 |
| 文章编号： | 1002-8331-（2005）33-0211-02 |
| 收稿时间： | 2005-01 |
| 修稿时间： | 2005-01 |
A New Offline Electronic Cash Scheme Based on Group Signature |
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| Zhang Xinglan,Nie Rong.A New Offline Electronic Cash Scheme Based on Group Signature[J].Computer Engineering and Applications,2005,41(33):211-212. |
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| Authors: | Zhang Xinglan Nie Rong |
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| Affiliation: | 1.College of Computer Science,Beijing University of Technology,Beijing 100022;2.College of Information Engineering,Beijing University of Posts and Telecommunication, Beijing 100876 |
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| Abstract: | In this paper,we propose a new efficient offline electronic cash scheme depend on the idea of group signature.This scheme can make the e-cash anonymously and unlinkabely,and realize the privacy of the e-cash.The e-cash is consisted of two parts ,one from user,the other from bank.The former protects the e-cash from forgeable ,and the later ensure the scheme can be applied effectively.Also,in our scheme,the bank must preserve the e-cash from being reused in some way.This method enhances the scheme security and reduces the process based on blind signatures. |
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| Keywords: | electronic cash group signature security |
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