无线传感器网络密钥预分配算法研究

摘要

Key pre-distribution is the most important safety problem in wireless sensor network. In order to ensure the wireless sensor network sensor nodes security, messages must be encrypted in transfer process. Because wireless sensor nodes have resource constraints, traditional key distribution method is unsuitable for wireless sensor networks.In order to improve the security of network communication, an improved key pre-distribution method is proposed.This algorithm uses nodes deployment and location information to increase network connectivity and reduce sensor node required storage space. Simulation experiments show that the proposed method has improved network ability against the attack, and it is more suitable for wireless sensor network security and energy consumption demand.%研究优化无线传感器性能提高抗攻击能力,密钥预分配是无线传感器网络最重要的安全问题.无线传感器网络通信中必须对传感器结点间传递的信息进行加密.无线传感器节点自身资源的限制,使传统网络中使用的密钥分配算法不适用于无线传感器网络.为了提高网络通信的安全性,在对已有无线传感器网络密钥预测分配算法的基础上,提出了一种改进的随机密钥预分配算法.利用节点的部署和位置信息来提高网络的连通性和减小传感器节点所需存储空间.仿真结果表明,改进方法提高了网络抗攻击能力,为无线传感器网络的安全及能耗设计提供了有效的方法.