无线传感器网络动态密钥管理方案

传统的密钥管理技术不适合资源受限的无线传感器网络,因此在保证网络的安全性下如何降低网络的能量开销已成为无线传感器网络安全技术的重要部分。文中提出一种新的密钥管理方案——双层组密钥管理(Two-Tier Dynamic Key Management,TDKM)方案。该方案把网络拓扑分成上层簇节点之间密钥会话和下层节点之间通信,其中上层采用基于位置的密钥预分布方法来建立簇节点之间会话密钥,下层采用基于位置的组合的密钥分布来组织节点之间的通信。与SECK方案比较,TDKM方案降低了更新开销,并且提高了网络的安全性能。

Dynamic Key Management Scheme for Wireless Sensor Networks

For many traditional key management schemes unfit for the constrained resource nodes in wireless sensor networks, how to reduce energy consumption of nodes and guarantee the security of the network becomes the important target of key management schemes. A Two-Tier Dynamic Key Management (TDKM) Scheme was proposed. This scheme includes location-ware pair-wise keys in cluster nodes sessions and location-based combinatorial keys in nodes communications. With comparing the SECK scheme, the TDKM scheme overcomes high refreshing cost and improves the security performance.