Abstract:

In peertopeer(P2P) networks, there are not trusted authorities, Trust relations between peers cannot be establish with traditional methods. A new trust model for P2P networks is described, in which trust relations between peers are set up upon reputations. Utilizing fuzzy theory, it can be customizable. Also utilizing time grouping, it presents a concrete but concise method to solve the time relativity problems. After storing the reputation information of each peer in its neighbors, it will reduce the network traffic and delay problems.

Key words: trust management, peer to peer networks, fuzzy theory, time relativity, reputation