| 基于逻辑密钥树的密钥管理方案及实现 |
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| 引用本文： | 晏轲,谢冬青.基于逻辑密钥树的密钥管理方案及实现[J].计算机工程与应用,2006,42(31):145-148. |
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| 作者姓名： | 晏轲 谢冬青 |
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| 作者单位： | 1. 湖南大学,计算机与通信学院,长沙,410082
2. 湖南大学,计算机与通信学院,长沙,410082;中国科学院,软件所,计算机科学开放实验室,北京,100080 |
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| 摘 要： | 逻辑密钥树方案是一种集中式的组播密钥管理方案,有效地减轻了组管理器和组成员的负担,但是却没有优化组通信初始化的过程。提出了密钥树的初始化过程,利用DH算法,有效减少了初始化过程中的加密开销和发送的消息数量。还分析了逻辑密钥树方案的加入和离开操作,组控制器和组成员拥有的密钥数,需要单播和广播的消息数,以及在算法上实现了组管理器在成员加入和退出时所要进行的密钥树的更新过程。
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| 关 键 词： | 组播 密钥管理 逻辑密钥树 |
| 文章编号： | 1002-8331（2006）31-0145-04 |
| 收稿时间： | 2006-01 |
| 修稿时间： | 2006-01 |
Scheme and Implementation of Key Management Based on LKH |
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| YAN Ke,XIE Dong-qing.Scheme and Implementation of Key Management Based on LKH[J].Computer Engineering and Applications,2006,42(31):145-148. |
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| Authors: | YAN Ke XIE Dong-qing |
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| Affiliation: | 1.College of Computer and Communication,Hunan University, Changsha 410082, China; 2.Lab of Computer Science,ISCAS,Beijing 100080,China |
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| Abstract: | LKH scheme is a centralized multicast key management scheme and it lightens the burden of the sever and group members efficiently,but it doesn't present the process of initialization clearly.In this paper,we propose the initialization of the tree using the DH algorithm in order to lessen the encryption cost and the number of messages and we analyse the join and eviction process of the LKH techniques,the number of the keys that the sever and the group members keep,the number of unicast and broadcast message,and we implement the process of tree update of the sever using algorithm when group members join or leave. |
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| Keywords: | multicast key management Logical Key Hierarchy(LKH) |
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