| 群密钥协商协议ID-AGKA的分析与改进 |
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| 引用本文： | 李国民,何大可. 群密钥协商协议ID-AGKA的分析与改进[J]. 计算机工程, 2009, 35(6): 148-149 |
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| 作者姓名： | 李国民 何大可 |
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| 作者单位： | 西南交通大学信息安全与国家计算网格实验室,成都,610031;西南交通大学信息安全与国家计算网格实验室,成都,610031;现代通信国家重点实验室,成都,610041 |
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| 基金项目： | 现代通信国家重点实验室基金 |
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| 摘 要： | 指出用Pairings实现的基于身份的具有常数轮可扩展的认证群密钥协商协议ID—AGKA不能抵抗外部攻击，即攻击者A能使群中用户在运行完该协议后所产生的会话密钥不一致，且不会被群中成员发现。针对该安全缺陷，给出改进方案，并对其安全性进行分析，改进方案在原方案安全性的基础上能抵挡外部攻击。
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| 关 键 词： | 认证 群密钥协商协议 外部攻击 |
| 修稿时间： | |
Analysis and Improvement of Group Key Agreement Protocol ID-AGKA |
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| LI Guo-min,HE Da-ke. Analysis and Improvement of Group Key Agreement Protocol ID-AGKA[J]. Computer Engineering, 2009, 35(6): 148-149 |
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| Authors: | LI Guo-min HE Da-ke |
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| Affiliation: | 1. Laboratory of Information Security and National Computing Grid;Southwest Jiaotong University;Chengdu 610031;2. National Laboratory for Modern Communications of China;Chengdu 610041 |
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| Abstract: | A more security analysis on the ID-based Authenticated Group Key Agreement(ID-AGKA) is given and it is found that the ID-based AGKA does not resist outsider attack, that is, an adversary can make a group session key inconsistent, which can not be detected by the users in the group however. An improvement of the AGKA scheme is proposed. Security analysis shows the scheme can resist outside attack. |
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| Keywords: | authentication group key agreement protocol outside attack |
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