无线传感器网络层簇式密钥管理方案的研究

Research of Layer-Cluster Key Management Scheme on Wireless Sensor Networks

密钥管理是无线传感器网络安全机制最关键的技术之一。该文分析比较了各种密钥管理方案,认为组密钥管理更适合于无线传感器网络。并在集中式和分布式两种组密钥管理方案的基础上,提出了新的层簇式密钥管理架构,并解决了这两种方案存在的安全缺陷。而组间通信则采用基于(t,n)门限方案的密钥分割机制来实现。该新方案能保证无线传感器网络安全需求的同时改善执行效能。

Key management is one of the most important technologies on the security mechanism of wireless sensor network. Compared with all kinds of key management schemes, group key management is more suitable for wireless sensor network. According to the root-controlling and distributing group key management schemes, this paper proposes a novel layer-cluster key management technique and resolves specific defects of the two schemes. Furthermore, secret sharing mechanism based on （t, n） threshold cryptography realizes the secure communication among groups. The new proposal can not only meet security demands of wireless sensor network but also improve executing performance.