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With the development of Wireless sensor networks, secure communication among sensors by establishing pair-wise keys becomes a critical issue for many sensor network applications. Due to sensors' special uses, limited capabilities and declining connection probability, the random key pre-distribution schemes are no longer suitable for networks with large size. Multi-path key establishment scheme becomes...
In this work, to obtain stronger connectivity, we propose and analyze a scheme extended by random key pre-distribution (RKP), which can work only in highly dense networks and require path construction. We investigate the threshold property of multi-hop key connectivity in random geometric networks. We have made use of the Jansonpsilas inequality to deal with the dependency overhead. Accordingly, our...
Providing a secure routing algorithm that defend against node compromise is a challenging task in sensor networks. In this paper, we propose a proactive secure routing algorithm (PSR) to conquer the undetected compromised nodes-the compromised nodes that the system has not detected them yet. Compared with other secure routing algorithms or ideas, routing paths in PSR not only bypass the detected compromised...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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