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Recent studies have shown that BitTorrent, one of the most popular peer-to-peer file-sharing systems, is confronted with two serious problems: robustness and fairness. In this paper, a partially decentralized trust management system for BitTorrent is presented to deal with the two problems. By extending and modifying the functionality of the tracker in BitTorrent swarm, the extended tracker serves...
Peer-to-Peer (P2P) has become a popular networking method which increases robustness and scalability. However, the distributed and decentralized P2P computing models have some serious security problems which may cause largescale Distributed Denial of Service (DDoS). This paper introduces the P2P system and the DDoS attacks in the particular networking environment. It also discusses the detection and...
We consider pervasive computing environment where information is exchanged among nodes in a peer-to-peer fashion. We apply a hybrid approach and focus on the design of a bandwidth efficient overlay. Our approach, called together, is based on the observation that participating peers is more likely not to contribute available bandwidth for the delivery quality of others. To identify these peers, we...
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