Abstract: To solve the problem of limited computing and storage capacity of the node for wireless sensor networks，a new key pre-distribution management scheme-KDNKPD for clustering wireless sensor networks is proposed.According to Blundo dimensional polynomial function and key distribution node，secure communications are established between nodes and cluster head，this scheme can adapt to cluster nodes elected by round and solve the security problem of Blundo scheme.Security analysis and performance analysis through comparison and simulation results show that the proposed network improves security and reduces the sensor node storage overhead and computation overhead.

Key words: Wireless Sensor Network（WSN）, clustering, security, key management

摘要： 针对无线传感器网络节点计算和存储能力有限，能量受限等特点，提出了一种新的分簇传感器网络密钥预分配管理方案KDNKPD。该方案借助于Blundo二元多项式函数和密钥分发节点建立节点与簇头间的安全通信，能够适应簇首节点的按轮选举并解决了Blundo方案的安全问题。通过安全分析与性能分析比较和仿真实验表明，该方案提高了网络的安全性，减少了传感器节点的存储开销和计算开销。

关键词: 传感器网络, 分簇, 安全性, 密钥管理