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Contributions à la détection des comportements malhonnêtes dans les réseaux ad hoc AODV par analyse de la confiance implicite

Mohamed Ali Ayachi 1, 2
2 CIDRE - Confidentialité, Intégrité, Disponibilité et Répartition
CentraleSupélec, Inria Rennes – Bretagne Atlantique , IRISA-D1 - SYSTÈMES LARGE ÉCHELLE
Abstract : An ad hoc network is a collection of mobile devices that communicate in a self organized way using wireless network interfaces without neither centralized administration nor fixed infrastructure. In such a network, nodes must cooperate with each other so as to extend their transmission range to reach distant nodes. This cooperation requires a specific ad hoc routing protocol to establish and maintain routes between nodes. Ad hoc routing protocols are based on mutual trust between collaborating nodes and suppose a correct behavior. However, as some nodes that legitimately belong to the network may lie so as to manipulate it to their advantage, every node should consider its environment as hostile and implement accordingly its own security mechanisms to protect itself against internal (i.e. a priori trusted but in fact not trustworthy) dishonest nodes. In this thesis, we are interested in detecting misbehaving nodes within the ad hoc routing protocol AODV. We propose and implement a detection system based on implicit trust relations : a node implementing this system collects its neighbors' routing messages and reasons about them to decide on their trustworthiness. We also evaluate our implementation, and, based on simulations, show that the system we have developed to detect dishonest behavior is efficient. We also study cases of false positive and we propose a solution to limit their occurrences.
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Submitted on : Monday, January 16, 2012 - 5:15:30 PM
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  • HAL Id : tel-00660467, version 1

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Mohamed Ali Ayachi. Contributions à la détection des comportements malhonnêtes dans les réseaux ad hoc AODV par analyse de la confiance implicite. Cryptographie et sécurité [cs.CR]. Université Rennes 1; Université Européenne de Bretagne; Université 7 Novembre à Carthage, 2011. Français. ⟨tel-00660467⟩

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