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Calculating a node's reputation in a mobile ad hoc network

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3 Author(s)
Adams, W.J. ; Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Hadjichristofi, G.C. ; Davis, N.J., IV

Behavior grading is crucial to the operation of a mobile ad-hoc network (MANET). Our Key Management System project has established a behavior grading and tracking mechanism through the use of X.509 v3 certificates with appropriate extensions. Our distributed, node-centric approach to reputation management processes nodal behavior feedback and provides a reputation index that nodes use to determine trustworthiness of their peers before establishing IPsec security associations. Behavior feedback is "aged" in a three-window weighted average, which emphasizes current behavior while conservatively approximating behavior trends over time. The windowed approach maintains non-reputable evidence, which supports the reputation calculation and facilitates the exchange of behavior information with new nodes as they join the network.

Published in:

Performance, Computing, and Communications Conference, 2005. IPCCC 2005. 24th IEEE International

Date of Conference:

7-9 April 2005