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SeFER: secure, flexible and efficient routing protocol for distributed sensor networks

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5 Author(s)
Oniz, C.C. ; Fac. of Eng. & Natural Sci., Sabanci Univ., Istanbul, Turkey ; Tasci, S.E. ; SavasĖ§, E. ; Ercetin, O.
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In this paper, we present a secure, flexible, and efficient routing protocol for sensor networks based on random key predistribution. Our protocol aims to establish secure paths in a sensor network between a controller and a set of nodes where each node has been assigned a set of randomly chosen keys out of a key pool. A common model for sensor networks assumes a tree of sensor nodes delivering information to the controller according to an inquiry sent into the network. However, these two nodes may communicate indirectly but securely over a multiple hop path where each pair of nodes on this path shares a common key. Our protocol bridges the gap between these two cases by providing the methods for nodes to securely share their keys and communicate directly so that the efficiency of communications is increased without jeopardizing the security. In this way, our protocol generates secure and efficient routes. We also provide simulation results for our protocol demonstrating that, for a small number of keys stored at each node, the average path length is smaller. However, the gains due to our protocol diminish as the number of available keys at each node increases since two nodes within communication range of each other are more likely to have a key in common.

Published in:

Wireless Sensor Networks, 2005. Proceeedings of the Second European Workshop on

Date of Conference:

31 Jan.-2 Feb. 2005