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Distributed Trust Evaluation in Ad-Hoc Networks

dc.contributor.advisorBaras, John S.en_US
dc.contributor.authorTheodorakopoulos, Georgiosen_US
dc.description.abstractAn important concept in network security is trust, interpreted as a relation among entities that participate in various protocols. Trust relations are based on evidence related to the previous interactions of entities within a protocol. In this work, we are focusing on the evaluation process of trust evidence in Ad Hoc Networks. Because of the dynamic nature of Ad Hoc Networks, trust evidence may be uncertain and incomplete. Also, no pre-established infrastructure can be assumed. The process is formulated as a path problem on a directed graph, where nodes represent entities, and edges represent trust relations. We show that two nodes can establish an indirect trust relation without previous direct interaction. The results are robust in the presence of attackers. We give intuitive requirements for any trust evaluation algorithm. The performance of the scheme is evaluated on various topologies.en_US
dc.format.extent454331 bytes
dc.relation.ispartofseriesISR; MS 2004-2en_US
dc.relation.ispartofseriesCSHCN; MS 2004-2en_US
dc.subjectad hoc networksen_US
dc.subjecttrust establishmenten_US
dc.titleDistributed Trust Evaluation in Ad-Hoc Networksen_US

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