A Trust Evolution Model for P2P Networks

The issue of selecting the peers with reliable information, resources or services becomes very difficult for the decentralized architecture of P2P networks. Trust is a new approach to predict the quality of resources of the peers. This paper proposes a trust evolution model to build trust relationships among peers automatically and support trust evolution, in which two critical dimensions, experience and context, are taken into account. This model supports decentralized trust management. Furthermore, it proposes an approach to form trust according to the information of relevant contexts. Results of simulation show that the model can suit the P2P networks effectively.