Abstract:

For the sake of the problems that existed in P2P（Peer to Peer） networks,a trust model for P2P networks based on relationship set is proposed. RSTM（Relationship Set Trust Model）  uses the relationship set,chooses nodes randomly, makes recommendation of the nodes which gives respond information. RSTM carries evaluation through the nodes which offers services, there are some punitive measures to the malicious nodes. It has been proved through experiments. RSTM can eliminate most of the malicious nodes and prevent the collective deceive of them effectively. In addition, the proposed model evaluates the nodes roundly under the circumstance of minishing the search area.The security and reliability in P2P networks are improved effectively.

Key words: peer to peer(P2P) networks, set of relationship, trust, recommend, feedback