Abstract: The trust model based on communication can not completely solve the problems of security threats and lack of energy in wireless sensor networks. A trust model based on communication, data and energy was proposed in this paper,which added the sensing data and the node's energy in the factors of trust assessment,and used different methods to calculate the separate trust values. I3y this way, a wireless sensor network of node more reliable could be established.Simulation results show that, one model only based on communication trust is not enough to decide on the trustworthiness of a node,and the model based on multi-angle trust can judge the credibility of a node more simply and accurately.

Key words: Wireless sensor networks,Communication trust,Data trust,Energy trust