异构无线传感器网络动态混合密钥管理方案研究

在需要进行安全通信的无线传感器网络应用中,复杂的公钥系统难以在资源有限的传感节点上实现,而基于随机预分配的对称密钥系统有节点连通性不强、密钥存储空间过大、密钥协商过程复杂且不灵活等问题。因此,在异构无线传感器网络基础上,提出一种联合公钥机制与私钥机制的混合密钥管理方案(DHKAS)。该方案使用一种简便可靠的方法,以较小的代价解决了密钥管理中最关键的节点认证问题。分析结果显示,所提方案有效提高了节点的连通性、减少了密钥存储空间,并增强了网络抗攻击能力。

A research on dynamic and hybrid key management scheme of heterogeneous sensor network

In the application of Wireless Sensor Networks (WSN) needing secure communications, asymmetric key scheme is supposed difficult to be implemented on resources limited sensor node, and the symmetric key scheme based on probability pre distribution possess the disadvantages of weak nodes connectivity, big memory consuming, complicated and inflexible key agreement. Hence, a dynamic hybrid key management scheme associated asymmetric and symmetric scheme (DHKAS) was proposed based on the heterogeneous wireless sensor networks. The scheme solved the Node Authentication problem in key management with a simple and reliable way. The analysis result shows that the proposed scheme effectively improves the connectivity of the node, reduces memory consuming and enhances the network secure ability.