| Feng-Yuan不可否认门限代理签名方案的改进 |
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| 引用本文： | 谢琪.Feng-Yuan不可否认门限代理签名方案的改进[J].计算机应用,2006,26(7):1634-1636. |
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| 作者姓名： | 谢琪 |
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| 作者单位： | 杭州师范学院,信息工程学院,浙江,杭州,310036 |
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| 基金项目： | 浙江省自然科学基金;浙江省教育厅资助项目 |
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| 摘 要： | Feng Yuan指出Hsu等的门限代理签名方案不具有不可否认性，同时给出了具有不可否认性的改进方案。指出Feng Yuan的改进方案无法抵抗内部成员的合谋攻击，从而无法实现可识别性和不可否认性。进一步，给出了改进方案以弥补该方案的安全性缺陷。
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| 关 键 词： | 代理签名 门限代理签名 合谋攻击 |
| 文章编号： | 1001-9081（2006）07-1634-03 |
| 收稿时间： | 2006-01-15 |
| 修稿时间： | 2006-01-152006-03-02 |
Improvement of Feng-Yuan nonrepudiable threshold proxy signature scheme |
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| XIE Qi.Improvement of Feng-Yuan nonrepudiable threshold proxy signature scheme[J].journal of Computer Applications,2006,26(7):1634-1636. |
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| Authors: | XIE Qi |
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| Affiliation: | School of Information and Engineering, Hangzhou Teachers College, Hangzhou Zhejiang 310036, China |
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| Abstract: | Feng-Yuan pointed out that Hsu et al.'s threshold proxy signature scheme lacks of undeniability,and proposed an improvement scheme with nonrepudiation.A conspiracy attack on Feng-Yuan's improvement scheme shows that their scheme suffered from forgeability,unidentifiability and deniability.Furthermore,an improved scheme was presented to remedy the security weakness of Feng-Yuan's scheme. |
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| Keywords: | proxy signature threshold proxy signature conspiracy attack |
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