摘要：

在Ad hoc网络中，组密钥管理是安全核心问题。针对Ad hoc网络的特点，提出一种适用于大型群组的分级组密钥管理方案。把STR分级树状结构运用在分布式子组管理模式中，将分层型与周期型密钥管理相结合，降低密钥管理所产生的通信量与计算量。实验结果表明，该方案具有良好的可扩展性，可在大型的Ad hoc网络中成功应用。

关键词: Ad hoc网络, 分级, 组密钥管理, 扩展性

Abstract:

In Ad hoc networks, group key management is one of the most important secure problems. This paper proposes a hierarchical group key management scheme adapted to large groups according to network characteristics. The scheme puts STR hierarchical tree structure into distributed subgroup management model effectively, and combines layer-based key management with cycle-based key management, in order to reduce the communication and computation cost greatly. Experimental result shows that this scheme is of good attribute in expansibility and lange Ad hoc networks.

Key words: Ad hoc networks, hierarchy, group key management, expansibility

中图分类号: 

• TP393