Abstract:

In unstructured peer-to-peer networks, there are numerous malicious nodes, whose false behaviors decrease the efficiency and reliability of the search．A resource discovery approach based on the trust and social networks (TSN) is proposed to solve this problem．Forwarding trust, routing trust and transaction trust are set up to reflect the credibility of the peers．When a peer node selects friends to forward the query message, the friends with high trust and correlation will be given priority. Simulation shows that the TSN effectively screens out the malicious nodes and improves the resource reliability and the searching efficiency.

Key words: peer-to-peer network, social network, trust, resourse discovery