| 一些基于辫群的代理签名方案的分析与改进 |
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| 引用本文： | 黄文平,宁菊红.一些基于辫群的代理签名方案的分析与改进[J].计算机安全,2011(5):6-9. |
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| 作者姓名： | 黄文平 宁菊红 |
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| 作者单位： | 南昌陆军学院; |
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| 基金项目： | 江西省自然科学基金(2007GQS0159); 江西省教育厅科研计划项目(GJJ08161) |
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| 摘 要： | 对两个基于辫群的代理签名方案进行了分析,发现它们是不安全的.第一个方案中,任何攻击者都能成功地假冒原始签名者和代理签名者,在第二个方案中,不满足代理盲签名所必需的不可伪造性和不可追踪性的性质要求.在分析两个签名方案的基础上,提出一个基于辫群的代理盲签名方案,新方案在不增加计算复杂性的前提下,保证了签名的安全性,同时代理...
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| 关 键 词： | 辫群 代理签名 代理盲签名 伪造攻击 |
Analysis and Improvement of Some Proxy Signature Schemes over Braid Groups |
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| HUANG Wen-ping.Analysis and Improvement of Some Proxy Signature Schemes over Braid Groups[J].Network & Computer Security,2011(5):6-9. |
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| Authors: | HUANG Wen-ping |
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| Affiliation: | HUANG Wen-ping (Department of Science & Arts,Nanchang military academy,Nanchang,Jiangxi 330103,China) |
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| Abstract: | Analysis shows that two proxy signature schemes over braid groups are insecure,the first scheme can't resist forging original signer and delegator attack;in the scheme of second,any antagonist can successfully forge a valid proxy signature scheme,which the antagonist can be designate any proxy signer and messages.What's more,After published messages,the delegator can track the messages.Later,a new proxy signature scheme is proposed.Analysis shows that the proposed scheme satisfies all security properties;wh... |
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| Keywords: | Braid groups proxy signature blind signature forgery attack |
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