Index Poisoning Scheme for P2P File Sharing Systems with Low Spatial and Network Costs (Preliminary Version)
Yuusuke Ookita, Satoshi Fujita · 2015
Abstract—In this paper, we propose an index poisoning scheme for unstructured P2P file sharing systems. Index poisoning is a technique which alters the index of illegal files so that they could not be reached by any peer which wishes to access them through the P2P. The proposed scheme is a combination of the following three periodical injections of the copies of altered index: 1) injection to the owner of illegal files, 2) injection to upstream peers by setting a long lifetime to each copy, and 3) injection to downstream peers by setting a short lifetime to each copy. The results of simulation indicate that the proposed scheme attains almost the same performance with a simple index poisoning scheme which injects altered copy with long lifetime to all peers, with a significantly lower cost, i.e., the spatial cost reduces to one third and the peak network cost of external agent reduces to a half. Index Terms—Unstructured peer-to-peer, file sharing, index poisoning, illegal file sharing. I.