Context-aware-based dynamic trust computation model

Context is important to trust computation, while it is neglected in presented model. Based on the P2P network feature, the definition of trust is given and its characterization is analyzed. Then, a dynamic self-adaptive trust computation model is proposed. The direct trustworthiness is computed bases on Bayesian approach, and on this foundation, the indirect trustworthiness computation method is presented. At the end, the integrated trustworthiness computation model is presented. The simulation results show that this model can promote the network performance and security.