The Research Of Trust Model Of Peer-to-Peer Network

P2P network is a newly emergjng computing model succeeding conventional client/server(c/s) model.Every Peer node in P2P network is equal,which acts as both a client and a server. Particularly, the P2P networks are with the absence of central control and global information. The characters of open and distributed are the most important advantages of P2P network, but which also bring a challenge to P2P. Since P2P environment is open and dynamic in nature, trust mechanisms in social networks can be used to build trust in peers for safeguarding interaction. The main work of this paper is to put forward to a P2P security model based on the trust and reputation, on the basis of the research of development of the P2P network and the existing P2P security model. This model can effectively solve its security issues which are brought by its distribution. At last we simulate this model and analyze the performance of the model under different circumstances.First of all, the paper introduces the various P2P network topology, and the typical application and related security needs.The most basic security need of P2P network is simplified.Secondly, we put forward to a P2P security model based on trust and reputation after comparing the character of the existing P2P network security model.Finally, the simulation of this model is achieved. The analysis of the security performance of this model is detained, based on the different node number, malicious node number.