| 对无证书部分盲签名方案的分析与改进 |
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| 引用本文： | 苑飞,张建中.对无证书部分盲签名方案的分析与改进[J].宝鸡文理学院学报(自然科学版),2013,33(4):15-19. |
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| 作者姓名： | 苑飞 张建中 |
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| 作者单位： | 陕西师范大学数学与信息科学学院,陕西西安,710062;陕西师范大学数学与信息科学学院,陕西西安,710062 |
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| 基金项目： | 国家自然科学基金(No.61173190,61273311);陕西省自然科学基础研究计划资助项目(No.2010JQ8027);陕西省教育厅科研计划项目(No.2010JK398;12JK1003);中央高校基本科研业务费专项资金资助项目(GK201002041) |
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| 摘 要： | 目的 研究了几个无证书的部分盲签名方案,对其中的一个签名方案分析发现其存在严重的安全缺陷,并对出现伪造攻击的原因进行分析.方法 在签名阶段加入公共信息,并在签名时改变签名的形式.结果与结论 分析表明,改进方案不仅满足部分盲性,而且可以防止对公共信息的更改,并在随机预言模型下证明新方案是不可伪造的.
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| 关 键 词： | 无证书签名 部分盲签名 篡改公共信息攻击 安全分析 |
Cryptanalysis and improvement of certificateless partially blind signature scheme |
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| YUAN Fei;ZHANG Jian-zhong.Cryptanalysis and improvement of certificateless partially blind signature scheme[J].Journal of Baoji College of Arts and Science(Natural Science Edition),2013,33(4):15-19. |
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| Authors: | YUAN Fei;ZHANG Jian-zhong |
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| Institution: | YUAN Fei;ZHANG Jian-zhong;College of Mathematics and Information Science,Shaanxi Normal University; |
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| Abstract: | Objective--To analyze one of the certificateless partially blind signature schemes that we found unsecure during our study and the reason why this scheme suffer from the attack. Methods-- By increasing the common information and changing the part of signature form, a new scheme is given. Results and Conclusion--The results show that the new scheme not only satisfies the various security properties of partially blind signature, but also can prevent from the adversary＇s attack of modifying common information, and the new scheme is proved to be unforgeable under the random oracle model. |
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| Keywords: | certificateless signature partially blind signature tampering common information attacks security analysis |
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