| 两个指定验证者签名方案的分析与改进 |
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| 引用本文： | 张永洁,王彩芬,张玉磊.两个指定验证者签名方案的分析与改进[J].计算机应用,2010,30(5):1227-1229. |
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| 作者姓名： | 张永洁 王彩芬 张玉磊 |
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| 作者单位： | 1. 甘肃省卫生学校2. 西北师范大学数学与信息科学学院 |
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| 基金项目： | 教育部科学技术研究重点项目(208148);;甘肃省教育厅重点项目(0801-01) |
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| 摘 要： | 分析了两个基于身份的指定验证者签名方案（Zhang方案和Li-Zheng-Zhu方案），指出了两个签名方案不满足指定验证者签名的安全特性：Zhang方案不满足不可伪造性，Li-Zheng-Zhu方案中非指定验证者可以验证签名的有效性，不满足指定验证性。对两个方案进行了改进，改进后的Zhang方案满足不可伪造性，并具有与原方案相同的效率；改进后的Li-Zheng-Zhu方案不仅满足指定验证性，而且减少了一个双线性对运算，具有较高的效率。
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| 关 键 词： | 基于身份签名 指定验证者签名 短签名 双线性对 |
| 收稿时间： | 2009-11-19 |
| 修稿时间： | 2009-12-28 |
Aanalysis and improvement of two designated verifier signature schemes |
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| ZHANG Yong-jie,WANG Cai-fen,ZHANG Yu-lei.Aanalysis and improvement of two designated verifier signature schemes[J].journal of Computer Applications,2010,30(5):1227-1229. |
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| Authors: | ZHANG Yong-jie WANG Cai-fen ZHANG Yu-lei |
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| Affiliation: | 1.Gansu Province Health School/a>;Lanzhou Gansu 730000/a>;China/a>;2.College of Mathematics and Information Science/a>;Northwest Normal University/a>;Lanzhou Gansu 730070/a>;China |
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| Abstract: | Two identity-based designated verifier signature schemes,which were proposed by Zhang and Li-Zheng-Zhu respectively,were analyzed.It was shown that two schemes did not satisfy the security requirements of designated verifier signature.Zhang's scheme did not meet the unforgeability requirement;Li-Zheng-Zhu's scheme did not have designated verification as although the non-designated-verifier could check the validity of the signatures.Then the schemes were improved.The improved Zhang's scheme owns unforgeabili... |
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| Keywords: | identity-based signature designated verifier signature short signature bilinear pairing |
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