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Trust Management in Partially Decentralized Peer To Peer File Sharing System

Trust management for peers in P2P network is very much important due to its open and anonymous nature. In this paper, we propose a reputation based trust management scheme for partially decentralized peer-to-peer file sharing systems. Reputation data is stored at the super node level. We calculate the reputation value for each file by using fuzzy logic inferences, which can better handle uncertainty, fuzziness, and incomplete information in peer trust reports. We have considered three factors namely: quality, popularity and size of the file shared by a peer and simulated the resulting trust management system.