传感器网络中一种混合密钥管理方案

提出了一种混合密钥管理方案.该方案借助于Blom矩阵和密钥池,来完成密钥预分配,使得所有的簇头间、节点和它的簇头间,以及节点之间都能进行安全通信.该方案还能够支持网络的拓扑结构的变化,并且能动态的管理密钥信息从而解决了密钥泄漏等问题.进行了网络安全及性能分析,包括安全性能比较、储存空间比较、通信与计算开销比较.仿真结果显示,与已有的一些密钥方案相比,该方案提高了网络的安全性,减小了存储空间.

A hybrid key-management scheme for wireless sensor networks

As a fundamental requirement for providing security in sensor networks,key management plays an essential role in authentication and encryption.A hybrid key-management scheme for wireless sensor networks is proposed.Based on the Blom matrix and the key pool,this scheme can pre-load some key information to sensors to achieve key pre-distribution to insure the establishment of secure link.Key information with the network topology changes can be deleted and updated to avoid key information to be revealed.Analysis is made on network security and performance,including security,storage,communication and computation overhead.Comparison and simulation results show that the proposed scheme can perform better than most of the existing key management schemes in network security and key storage overhead.