Study on Reputation in P2P System
P2P系统的信任研究

Trust is a problem of particular importance in peer-to-peer system. However, the feature of the peer-to- peer system such as user anonymity, open nature makes that peers are not responsible for their irresponsible bartering history. This paper describes an algorithm to assess the peer which provides service based on the behavior of the peer. According bartering history and other peers recommend, the peer decides to download the sharing file from which peers. Analyses and simulations show that the model can assess the peer's reputation effectively, discard the mali- cious peer from peer-to-peer system and improve the rate of successful download greatly.