Adversary Information Gathering Model for Node Capture Attack in Wireless Sensor Networks

Node capture attack is considered to be one of the most serious attack in WSN. An adversary physically captures a node so that she can steal all the confidential information stored in it and can launch further attacks by deploying clones of a captured node. To achieve this she needs to gather useful information regarding the network before capturing a node. Hence, a node capture by an adversary depends on how quickly she is able to gather the information regarding the network and about the target node. In this paper we have proposed a model for the process of gathering information by an adversary. We have also found the expected amount of information an adversary have at an arbitrary time t. Using the above information we proposed the expected time of a node capture based on the strength of an adversary and the dynamicity of the network.

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