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An Efficient Key Tree Management Algorithm for LKH Group Key Management

机译:LKH组密钥管理的高效密钥树管理算法

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摘要

The efficiency and security of secure group communication are dependent on the group key manager (GKM), which manages the group keys and membership. Although a GKM can employ any kind of group key management algorithm, we adopt the logical key hierarchy (LKH) in this paper for its efficiency and scalability. LKH is a tree-based group key management algorithm and it is more efficient when the key tree is balanced. However, only a few papers or documents have dealt with practical tree balancing techniques so far. In this paper, we propose LKHTree-Manager, an LKH key tree management algorithm that is efficient for a large and highly dynamic secure group. The proposed technique efficiently manages the key tree by combining LKH and AVL (Adelson-Velskii and Landis) tree. We show that LKHTreeManager reduces the membership processing time, as well as the number of key messages.
机译:安全组通信的效率和安全性取决于组密钥管理器(GKM),该组密钥管理器管理组密钥和成员身份。尽管GKM可以采用任何类型的组密钥管理算法,但由于其效率和可伸缩性,我们在本文中采用了逻辑密钥层次结构(LKH)。 LKH是基于树的组密钥管理算法,在平衡密钥树时效率更高。但是,到目前为止,只有很少的论文或文件涉及实用的树平衡技术。在本文中,我们提出了LKHTree-Manager,这是一种LKH密钥树管理算法,对大型且高度动态的安全组非常有效。所提出的技术通过组合LKH和AVL(Adelson-Velskii和Landis)树来有效地管理密钥树。我们证明LKHTreeManager减少了成员资格处理时间以及关键消息的数量。

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