Game Theoretic Model for P2P Trust Management

P2P networks provide a highly reliable way of sharing resources. But the peers have to manage the risk involved due to lack of knowledge about each other´s trustworthiness. For the peers to behave honestly trust needs to be incorporated. Peers could provide different types of services. The trust framework should enable assessing the peers based on the services provided by them. This paper discusses a trust framework for evaluating the trust of peers in a network. The trust framework incorporates self-experience and reputation to calculate trustworthiness of a peer. Game Tree strategy, Tit for Tat strategy, Self Trust strategy, Dynamic strategy and Auditing strategy, Redundant Job Submission strategy is proposed for selecting peers for doing job and for result evaluation respectively.