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Recent advances in technology have led to rapid growth of Internet of Things (IoT) systems which incorporate numerous miniaturized low powered devices with large numbers of sensors and actuators collecting and exchanging data autonomously over the internet generating enormous amounts of data that needs to be secured. Traditional encryption algorithms are not suitable due to great complexity and numerous rounds for encryption and decryption operations. There is however a rising need for elaborate lightweight encryption algorithms with less complexity for optimum security in resource constrained communication networks. In this paper, a lightweight encryption algorithm called Intra-Optimized Lightweight Enciphering (ILE) Algorithm is proposed. The proposed scheme is complemented by watchdogs who are deployed in the clusters to achieve optimum security for the overall generated clusters at less cost and is simulated on Message Queue Telemetry Transport (MQTT) protocol using Mosquito broker in Cooja simulator and the performance was evaluated. Results from simulations show that the proposed algorithm offers significant security, improved performance and power drain without compromising the quality of service and further a comparison was made with existing lightweight algorithms.
© 2011-2019 Australian Journal of Wireless Technologies, Mobility and Security e-ISSN 2200-1883
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