| Security Analysis of Broadcaster Group Key Exchange Protocols |
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| 作者姓名： | LI Li ZHANG Huanguo |
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| 作者单位： | [1]School of Software, Wuhan University, Wuhan 430072, Hubei, China [2]School of Computer, Wuhan University, Wuhan 430072, Hubei, China |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | 0 IntroductionAs a result of the increased development of network,group communication occursin many different settings .Anumber of group key exchange protocols have been pub-lished duringthelast years1-11].This paper discusses thefirsttype; we calledit broadcaster protocols .Secure group communicationis not a si mple extension ofsecure two-party communication. They should provide dy-namic security that is the most complicated aspect . Groupcommunication mutates ( members leave and join) afte…
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| 关 键 词： | 组密钥 交换协议 广播组协议 动态安全 密码分析 |
| 文章编号： | 1007-1202（2006）06-1577-04 |
| 收稿时间： | 2006-03-20 |
Security analysis of broadcaster group key exchange protocols |
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| LI Li ZHANG Huanguo.Security Analysis of Broadcaster Group Key Exchange Protocols[J].Wuhan University Journal of Natural Sciences,2006,11(6):1577-1580. |
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| Authors: | Li Li Zhang Huanguo |
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| Institution: | (1) School of Software, Wuhan University, 430072 Wuhan, Hubei, China |
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| Abstract: | Group key exchange protocols are basic protocols to provide privacy and integrity in secure group communication. This paper discusses the security of one type of group key exchange protocols and defines the kind of protocols as broadcaster group protocols. It points out two attacks on this kind of protocols. The first attack can be avoided by using fresh values in each action during one session of the group protocol. The second attack should be related with concrete application. It also proposes a dynamic key agreement protocol as an example of solutions at the last part of the paper. |
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| Keywords: | group key exchange protocol broadcaster group protocols dynamic security |
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