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提出了一种基于预分发和协作的可靠的对密钥更新方案RPKU(reliable pairwise key-updating).借助于一种改进的Blom密钥矩阵构造方法,该方案能够随着网络的动态变化而动态伸缩各个节点的密钥信息,从而解决了由于节点被攻击所导致的密钥泄漏和密钥连通性下降等问题.该方案还提出了一种基于分簇型传感器网络结构的密钥预分发方法,使得任意两个相邻节点间都能建立一个对密钥.仿真结果表明,与已有的密钥方案相比,该方案在安全性、密钥连通性和扩展性等方面都具有明显的优势.
This paper proposes a reliable pairwise key-updating (RPKU) scheme based on pre-distribution and cooperation.By means of an improved Blom key matrix construction method, this scheme can dynamically change with the network dynamics So as to solve the problem of key leakage and key connectivity decline due to the node being attacked.This scheme also proposes a key pre-distribution method based on the clustered sensor network structure , So that a pair of keys can be established between any two adjacent nodes.The simulation results show that compared with the existing key schemes, the scheme has obvious advantages in terms of security, key connectivity and scalability Advantage.