| 对一种门限代理签名方案的密码分析及改进 |
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| 引用本文： | 张慧.对一种门限代理签名方案的密码分析及改进[J].高师理科学刊,2009,29(5):4-7. |
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| 作者姓名： | 张慧 |
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| 作者单位： | 杭州师范大学理学院,浙江,杭州,310636 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对Yang-Tzeng-Hwang方案进行了安全性分析,发现它是不安全的,不能抵抗内部伪造攻击.针对此方案的缺陷,提出了一种改进的方案,改进后的方案满足了代理签名的安全性要求.
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| 关 键 词： | 数字签名 代理签名 门限代理签名 伪造攻击 |
Crypt analysis and improvement of a threshold proxy signature scheme |
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| ZHANG Hui.Crypt analysis and improvement of a threshold proxy signature scheme[J].Journal of Science of Teachers＇College and University,2009,29(5):4-7. |
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| Authors: | ZHANG Hui |
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| Institution: | ZHANG Hui(School of Science,Hangzhou Normal University,Hangzhou 310036,China) |
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| Abstract: | The security of Yang-Tzeng-Hwang-scheme was analyzed.The result of the analysis showed that YTH-scheme is insecure against the forgery attack.To avoid these attacks,one improved schemes was given.Improved that the new scheme satisfies the required secure properties of the proxy signature. |
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| Keywords: | digital signature proxy signature threshold proxy signature forgery attack |
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