| 基于RSA的群签名方案的缺陷及改进方案 |
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| 引用本文： | 姜燕.基于RSA的群签名方案的缺陷及改进方案[J].计算机工程与设计,2008,29(7):1655-1658. |
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| 作者姓名： | 姜燕 |
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| 作者单位： | 山东轻工业学院现代教育技术中心,山东济南,250353;山东大学网络信息安全研究所,山东济南,250100 |
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| 摘 要： | 群签名作为一种特殊的数字签名因其显著的特性自被提出以来倍受关注,但是诸多群签名方案普遍存在无法实现前向安全、无法实现动态增删成员等问题.就一个基于RSA的群签名方案9]阐述它的安全缺陷,证明了此缺陷会导致整个系统的崩溃,并给出改进方案.改进后的方案仍采用了原方案的公钥状态列表PKSL公布各成员公钥状态和时戳机构签名的方法,在只增加2个乘幂运算和1个乘法运算的基础上,实现了高效安全地增加或删除群成员,并具备前向安全特性.
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| 关 键 词： | 群签名 前向安全 共模攻击 公钥状态列表 动态群签名 |
| 文章编号： | 1000-7024(2008)07-1655-03 |
| 修稿时间： | 2007年5月15日 |
Flaw and improved scheme of group signature scheme based on RSA |
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| JIANG Yan.Flaw and improved scheme of group signature scheme based on RSA[J].Computer Engineering and Design,2008,29(7):1655-1658. |
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| Authors: | JIANG Yan |
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| Affiliation: | JIANG Yan1,2(1.Modern Educational Technical Center,Sh,ong Institute of Light Industry,Jinan 250353,China,2.Institute of Network Security,Sh,ong University,Jinan 250100,China) |
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| Abstract: | Group signature has been positive regarded for its salient features since it is introduced as a special digital signature,however,forward security and dynamic member joining or deleting is not achieved yet in these schemes.A security flaw of a group signature scheme based on RSA signature scheme is described.And an improved scheme is proposed.The improved scheme is secure,forward and dynamic. |
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| Keywords: | group signature forward security common modulus attack PKSL dynamic group signature |
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