簇状WSN的分层密钥管理方案

有效的密钥管理方案是实现无线传感器网络安全通信的关键。针对簇状结构无线传感器网络自身的一些特性，本文提出一种簇状无线传感器网络的分层密钥管理方案。在本方案中，分别在簇内和簇间采用不同的密钥管理体制，簇内通信密钥利用中国剩余定理生成，在将复杂计算转交给基站的同时。降低了组密钥的存储空间；簇间通信密钥借助BLOM矩阵的思想生成，有效地提高了簇头节点抗击俘获的能力。通过对比分析，该方案有效地节省了节点的能童，每个节点不需要存储大量的共享密钥，而是按照不同的传输信息和安全需求存储相应类型的密钥。并提供了较强的可扩展性、网络的可靠性、高效性等安全性能。

Layered Key Management Scheme for Cluster Wireless Sensor Networks

Effective key management scheme is the foundation for the secure communication of cluster wireless sensor networks. As to some especial properties of cluster wireless sensor networks, a layered key management scheme for cluster wireless sensor networks in this paper. This paper uses different key management schemes. Cluster communication key is generated by means of Chinese remainder theorem. It could effectively transfer complicated computation to the base station and lower the storage consumption. Cluster headers communication key is generated implementing the BLOM matrix, it effectively enhance the ability of resilience. Under comparative analysis, the proposed scheme can effectively save the constrained energy of sensor nodes. Every node needn＇t deposit numerous sharing key, but only deposits corresponding key according to different transit information and security request,. It also provides high scalability of the network as well as resilience ability.