| 改进的基于口令的群密钥协商协议 |
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| 引用本文： | 胡红宇,李军义.改进的基于口令的群密钥协商协议[J].计算机工程,2011,37(3):132-133,136. |
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| 作者姓名： | 胡红宇 李军义 |
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| 作者单位： | 1. 湖南永州职业技术学院计算机系,湖南,永州,425000;湖南大学计算机与通讯学院,长沙,410082
2. 湖南大学计算机与通讯学院,长沙,410082 |
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| 基金项目： | 湖南省教育教学改革研究基金资助项 |
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| 摘 要： | 群密钥协商协议是保证后续群组安全通信的重要手段之一。为此，研究Byun和Lee提出的基于口令的群密钥协商协议，指出该协议不能抵抗不可检测的在线字典攻击。基于这个发现，对该方案进行改进，提出一种新的群密钥协商协议。安全性分析表明，该协议可以抵抗基于口令的群密钥协商协议的常见攻击。
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| 关 键 词： | 信息安全 群密钥协商 基于口令的认证 字典攻击 |
Improved Password-based Group Key Agreement Protocol |
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| HU Hong-yu,LI Jun-yi.Improved Password-based Group Key Agreement Protocol[J].Computer Engineering,2011,37(3):132-133,136. |
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| Authors: | HU Hong-yu LI Jun-yi |
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| Affiliation: | 1.Computer Department,Hunan Yongzhou Vocational Technology College,Yongzhou 425000,China;2.School of Computer and Communication,Hunan University,Changsha 410082,China) |
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| Abstract: | Group key agreement protocol is an important mechanism to ensure the security of subsequent communication. This paper researches a password-based Group Key Agreement（GKA） protocol proposed by Byun and Lee and finds that this protocol is vulnerable to undetectable on-line dictionary attacks. Based on this finding, it improves this protocol and presents a new GKA protocol. Security analysis shows that the protocol is resistant to the attacks available for password-based GKA protocols. |
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| Keywords: | information security Group Key Agreement（GKA） password-based authentication dictionary attack |
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