| 没有双线性对的无证书签名方案的分析与改进 |
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| 引用本文： | 陈江山,黄振杰.没有双线性对的无证书签名方案的分析与改进[J].计算机应用,2010,30(2):510-512. |
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| 作者姓名： | 陈江山 黄振杰 |
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| 作者单位： | 1. 福建省漳州师范学院数学与信息科学系2. |
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| 基金项目： | 福建省自然科学基金资助项目(2009J01307);;福建省属高校科研专项(JK2009019) |
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| 摘 要： | 无证书公钥密码体制不需要证书对公钥进行认证，同时也克服了基于身份密码体制中存在的密钥托管问题。通过对一个没有双线性对的无证书签名方案进行了安全性分析，指出其对KGC攻击是不安全的。然后，对原方案进行了改进，改进后的方案同样没有对运算。改进方案的安全性基于离散对数困难问题。
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| 关 键 词： | 无证书签名 密码学分析 离散对数问题 随机预言机模型 存在性不可伪造 |
| 收稿时间： | 2009-08-09 |
| 修稿时间： | 2009-09-24 |
On the security of certificateless signature scheme without pairing |
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| CHEN Jiang-shan,HUANG Zhen-jie.On the security of certificateless signature scheme without pairing[J].journal of Computer Applications,2010,30(2):510-512. |
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| Authors: | CHEN Jiang-shan HUANG Zhen-jie |
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| Affiliation: | 1.Department of Mathematics and Information Science/a>;Zhangzhou Normal University/a>;Zhangzhou Fujian 363000/a>;China/a>;2.Department of Computer Science and Engineering/a>;China |
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| Abstract: | Certificateless public key cryptology does not need certificates to verify the validity of public key,and overcomes the key escrow problem in ID-based public key cryptology.By analyzing the security of a certificateless signature scheme without pairing,it was pointed out that the scheme is insecure against a malicious Key Generating Centre(KGC) attack.Then,an improved scheme was proposed,whose security was based on the Discrete Logarithm Problem(DLP). |
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| Keywords: | certificateless signature cryptanalysis Discrete Logarithm Problem (DLP) random oracle model existential unforgeability |
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