Research on Trust Management Model of Wireless Sensor Networks

For wireless sensor network, the traditional encryption technology cannot effectively solve captured nodes to the inside network attack caused by security problems, put forward a kind of trust management model for hierarchical wireless sensor network. The model is based on cluster network topology, and the typical trust factor is selected from the three aspects of communication, data transmission and node itself to calculate the direct trust value of the node. The indirect trust value of each node is calculated by the matrix of the direct trust value of the cluster heads. Then, the direct trust value is calculated as the weight of the comprehensive trust value. Simulation experiments show that the model can identify malicious nodes effectively, with the classic based on reputation trust management framework model (RFSN), this paper models can maintain high detection rate when the proportion of malicious nodes is high, and improve the security of network effectively.