K. Haribabu

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The test of a peer-to-peer file sharing network is how efficiently the objects are discovered and retrieved. One of the most important factors that contribute towards this is optimal replication of the objects across the network. One of the security threats to replication model is Sybil attack. In this paper we propose an approach that aims at detecting(More)
— Scalability and efficient global search in unstructured peer-to-peer overlays have been extensively studied in the literature. The global search comes at the expense of local interactions between peers. Most of the unstructured peer-to-peer overlays do not provide any performance guarantee. In this work we propose a novel Quality of Service enabled lookup(More)
The efficiency of a Peer-to-Peer file sharing overlay is measured in terms of the scalability and versatility of its object lookup strategy. In these networks peers carry out distributed query relaying to discover the service providers. Existing lookup mechanisms like flooding and random walks in unstructured P2P overlays create huge communication overhead(More)
The paper proposes an indexing scheme known as Floating Index Caching. In Floating Index caching, queries carry a summarized index of contents of the peers that are on its way. Each node snoops on the queries passing through it. Queries are sent in the network using ether flooding or random-walk methods. When a query arrives at a node, indexes can be(More)
Sybil attack is an important problem as the peer-to-peer networks grow in size and become prominent means for distributing multimedia. In order to validate the feasibility of using psychometric tests as an approach to detect Sybils in their entirety as Sybil groups, experiment is conducted by taking the tests on a population of considerable size. Selected(More)
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