Author : Santosh Suresh Padwal and G.P. Bhole

In a peer-to-peer (P2P) network, every machine plays the role of client and server at the same time. In P2P system, one of the most important issues is trust management. P2P systems rely on other peers to accomplish the tasks. Peers need to trust each other for successful operation of the system. While communicating in between peers trust formation is very important to take service from the unknown resource. In this paper we study four trust models based on various approaches such as by policies, by reputation etc. Currently most of models for trust management are based on reputation. There are many models which works under above mentioned approaches out of these we have studied Eigen trust, SORT, Global Trust model and NICE. We have also compared four trust models in P2P systems. The comparison is based on the benefits and their properties.

Keywords: Peer-to-peer systems, trust management, reputation, and security

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.4 (Aug- 2014)