Evaluation of Peers Trustworthiness for JXTA-overlay Considering Data Download Speed, Local Score and Security Parameters

In P2P systems, each peer has to obtain information of other peers and propagate the information to other peers through neighboring peers. Thus, it is important for each peer to have some number of neighbor peers. Moreover, it is more significant to discuss if each peer has trustworthy neighbor peers. In reality, each peer might be faulty or might send obsolete, even incorrect information to the other peers. We have implemented a P2P platform called JXTA-Orverlay, which defines a set of protocols that standardize how different devices may communicate and collaborate among them. JXTA-Overlay provides a set of basic functionalities, primitives, intended to be as complete as possible to satisfy the needs of most JXTA-based applications. In this paper, we consider three input parameters: Data Download Speed (DDS), Local Score (LS) and Security (S) to decide the Peer Trustworthiness (PT). We evaluate the proposed system by computer simulations. The simulation results have shown that the proposed system has a good performance and can choose trustworthy peers to connect in JXTA-Overlay platform.