TRUST MANAGEMENT IN P2P SYSTEMS

Abstract

Peers are more likely to get exposed to malicious activities in P2P system due to its open nature, building the trust environment in P2P can mitigate these attacks. This paper is about the implementation of SORT model in peer to peer systems. The SORT model deals with the isolation of malicious and trusted peer in the LAN (Local Area Network). The isolation is done on the basis of the file uploaded by a peer, i.e. if he uploads an infected file in the proximity then the SORT model restricts the download of the infected file and thus protect the other peers from getting affected by the virus. File download is treated as an interaction. On each interaction there is calculation of some trust factor and the values are assigned by the downloader according to his satisfaction. Every peer calculates its own trust values regarding to other peers. These values are need to decide the further interactions in the network. Two types of attacks are mitigated by this model are Service based and Recommendation based. This project mainly deals with the security in the P2P system and acknowledges the peer whether the service he wants to use is clean or infected. This Project is implemented in Advanced JAVA and the MySQL database is used. The MVC architecture is used for building of this project. Peer calculate the trust metrics of each peer in its proximity they does this locally and do not tend to be global.