| 一种改进的群签名方案 |
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| 引用本文： | 王永峰,张建中. 一种改进的群签名方案[J]. 计算机工程, 2010, 36(24): 110-112 |
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| 作者姓名： | 王永峰 张建中 |
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| 作者单位： | [1]运城学院应用数学系,山西运城044000 [2]陕西师范大学数学与信息科学学院,西安710062 |
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| 基金项目： | 国家自然科学基金资助项目，陕西省自然科学计划研究基金资助项目，运城学院研究生科研启动基金资助项目 |
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| 摘 要： | 对一个能实现成员删除的群签名方案进行安全分析，指出该方案由于签名参数设置不当，使得签名打开算法和验证算法均无效，并存在冗余数据。在此基础上，改进该群签名方案。改进方案在签名参数里附加签名者公钥，解决签名身份揭示无效的问题；将群中心修改为可信中心，取消群管理员，解决群中心权力过大的问题，从而提高改进方案的整体有效性。
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| 关 键 词： | 群签名 签名验证 身份揭示 |
Improved Group Signature Scheme |
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| WANG Yong-feng,ZHANG Jian-zhong. Improved Group Signature Scheme[J]. Computer Engineering, 2010, 36(24): 110-112 |
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| Authors: | WANG Yong-feng ZHANG Jian-zhong |
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| Affiliation: | 1. Department of Applied Mathematics, Yuncheng University, Yuncheng 044000, China; 2. College of Mathematics and Information Science, Shaanxi Normal University, Xi＇an 710062, China) |
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| Abstract: | This paper analyzes a group signature scheme that it has the property of member deletion, points out that signature open algorithm and validated algorithm are all invalid, and it has redundant data because of signature parameter setting incorrectly. It improves group signature scheme on the basis of it. By attaching the signature public key to signature parameters, it resolves the problem of the identity revelation algorithm invalidity. By modifying group centre to trusted centre and removing the group manager entity, it resolves the problem of the group centre excessive power to improve the overall effectiveness of improved scheme. |
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| Keywords: | group signature signature verification identity revelation |
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