| 一种新的无证书代理签名方案的分析与改进 |
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| 引用本文： | 申军伟,杨晓元,梁中银,陈海滨.一种新的无证书代理签名方案的分析与改进[J].计算机工程与应用,2010,46(8):96-98. |
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| 作者姓名： | 申军伟 杨晓元 梁中银 陈海滨 |
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| 作者单位： | 1. 武警工程学院,西安,710086
2. 武警工程学院,西安,710086;西安电子科技大学,网络信息安全教育部重点实验室,西安,710071 |
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| 基金项目： | 国家自然科学基金Grant No.60573032~~ |
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| 摘 要： | 樊睿等人提出了一种新的无证书代理签名方案，该方案的安全性是基于CDH困难性假设。对该代理签名方案进行了安全性分析，指出该方案不仅泄露了原始签名者的私钥，而且不能抵抗替换公钥攻击和恶意但被动的KGC攻击，从而不满足代理签名的安全性要求。同时提出了一个改进方案，改进方案不仅弥补了原方案的安全缺陷，而且改善了协议的性能。
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| 关 键 词： | 无证书公钥密码体制 代理签名 替换公钥攻击 密钥生成中心 恶意但被动的KGC攻击 |
| 收稿时间： | 2008-9-18 |
| 修稿时间： | 2008-12-22
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Security analysis and improvement of new certificateless proxy signature |
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| SHEN Jun-wei,YANG Xiao-yuan,LIANG Zhong-yin,CHEN Hai-bin.Security analysis and improvement of new certificateless proxy signature[J].Computer Engineering and Applications,2010,46(8):96-98. |
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| Authors: | SHEN Jun-wei YANG Xiao-yuan LIANG Zhong-yin CHEN Hai-bin |
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| Affiliation: | SHEN Jun-wei1,YANG Xiao-yuan1,2,LIANG Zhong-yin1,CHEN Hai-bin1 1.Engineering College of Armed Police Force,Xi'an 710086,China 2.Key Laboratory of Network & Information Security of the Ministry of Education,Xidian University,Xi'an 710071,China |
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| Abstract: | This paper analyzes the security of a new certificateless proxy signature proposed by Fan Rui recently.The security of Fan Rui's scheme relies on the CDH problem.It shows that Fan's proxy signature reveals the private key of original signer and is insecure against a key replacement attack and malicious -but -passive KGC attack.It also gives a modified scheme.The improvement is secure against the key replacement attack and the malicious -but -passive KGC attack.This paper elaborately eliminates the defect of... |
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| Keywords: | certificateless public key cryptography proxy signature pubfic key replacement attack Key Generation Center(KGC) malicious-but-passive KGC attack |
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