基于多项式无线传感器网络密钥预分配方案

A Key Pre-distribution Scheme Based on Polynomial for Wireless Sensor Networks

针对无线传感器网络密钥管理中连通性、效能及安全性不足问题,基于阶层式无线传感器网络与二元对称多项式提出ESKDM(Efficient and Scalability Key Distribution Mechanism)方案。该方案通过运用多项式的特性,使传感器节点之间只需透过ID的信息交换即可建立密钥。相较于同类方案,ESKDM方案大幅度的降低传感器节点的通信成本,并完全抵抗节点捕获攻击。无论网络节点的大小,一般节点所需要储存的秘密信息都为固定的信息,能够支持大型的WSN。也提出在新增节点的同时,不需要在线的基站存在,更能适用于实际应用。

Key pre-distribution scheme is related to the corporative security between the nodes in wireless sensor net- work. Most of the existing key pre-distribution schemes have the shortcomings such as low connectivity-poor resistance and scalability. This paper further proposes a hierarchical sensor network key pre-distribution scheme ESKDM（Efficient and Scalability Key Distribution Mechanism） by symmetric bivariate polynomial function. Theoretical analysis and simulation re- sults show that the ESKDM scheme has good performances in the security connectivity rates, resistance, flexibility and other aspects.