Title :
Improving robustness and fairness on BitTorrent-Like P2P systems
Author :
Fenglin Qin ; Ju Liu ; Lina Zheng
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
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 as an authoritative trust computation agent (TCA) to calculate and disseminate global trust values for all peers, which complement with local trust values to identify and isolate malicious and selfish peers. Simulations show that the proposed trust management system significantly decreases the impact of malicious peers on the swarm performance, and also achieves a much fairer block allocation among peers in heterogeneous scenarios.
Keywords :
fault tolerant computing; peer-to-peer computing; security of data; BitTorrent swarm; BitTorrent-like P2P systems; P2P system fairness; P2P system robustness; extended tracker; peer-to-peer file sharing systems; trust computation agent; Bandwidth; Computational modeling; Computer hacking; Degradation; Information science; Internet; Peer to peer computing; Protocols; Robustness; Thin film transistors;
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
DOI :
10.1109/CHINACOM.2009.5339915
