Efficient and Distributed Network Model for P2p Systems

ABSTRACT Peer-to-peer networks are networks composed of heterogeneous and autonomous peers that cooperate with each other in a decentralized manner. All peers are both users and providers of resources and can access each other directly without intermediary agents. In the proposed system, we introduce a Self-Organizing Trust model (SORT) that aims to decrease malicious activity in a P2P system by establishing trust relations among peers in their proximity. Each peer develops its own local view of trust about the peers interacted in the past. In this way, good peers form dynamic trust groups in their proximity and can isolate malicious peers. . Finally, an experimental study is conducted on a real P2P prototype, and a large-scale network is further simulated. The results show the effectiveness, efficiency and scalability of the proposed system.