无线传感器网络密钥分配方法研究

摘要

研究无线网络安全设计,应优化加密方法.密钥分配是无线传感器网络的安全基础.传统密钥管理方案使传感器节点之间共享密钥,传感器节点之间出现能量消耗不均衡现象,引起整个网络安全性降低.为了提高网络安全性,提出一种基于能量均衡的网络密钥分配方案.方案首先根据传感器节点的能量建立源和目的传感节点之间的多条不相交路径,根据传能量最小和最大原理为源和目的传感器节点之间建立一条最优传感器节点不相交路径作为协商路径密钥的通道.仿真结果表明,改进密钥分配方案使网络能量更加均衡,提高了网络的安全性,是一种低能耗、安全性好的密钥管理方案.%Key distribution is the key problem in wireless sensor network security. In the traditional key management scheme, after the shared key is established between sensor nodes, the sensor node energy consumption is imbalance, the total network is unsecure. In order to improve network security, the network key management is proposed based on energy balance. First, according to the energy of the sensor nodes, several non - intersect paths are established among the source and the destination sensor nodes. Then base on the minimum and maximum energy transfer theory, an optimal sensor node non - intersect path between the source and destination sensor nodes is established as the consulting channel of path key. Simulation results show that, compared to the traditional key management schemes, this poposed scheme enables network energy more balanced, and improves the safety of network. Therefor,tt is a low energy consumed and good security key management scheme.