A kind of dynamic key management method for sensor networks

Many clustering routing protocols had been proposed which had rarely considered the network security issues so far. Most of the layer clustering key management methods does not consider the problem of key updating and cluster head being captured. Considering the probability of node being captured, particle swarm optimization algorithm was used to optimize the clustering of sensor networks. A dynamic key management method was proposed to achieve key updating regularly and provide a security strategy for sensor networks to solve the problem of cluster head being captured. The simulation illustrates that the proposed key management method can achieve better security performance.