Title: Secure communication scheme using chaotic time-varying delayed system

Authors: Khaled Benkouider; Meriem Halimi; Toufik Bouden

Addresses: Non Destructive Testing Laboratory, Automatic Department, Jijel University, B.P. 98, 18000, Jijel, Algeria ' Automatic Laboratory of Jijel, Automatic Department, Jijel University, B.P. 98, 18000, Jijel, Algeria ' Non Destructive Testing Laboratory, Automatic Department, Jijel University, B.P. 98, 18000, Jijel, Algeria

Abstract: In this paper, we are interested in the study of discrete-time delayed chaotic communication system where the delay is injected into the state vector of the chaotic system in order to increase the security of the transmission. Our aim is reconstructing the encrypted information at the receiver. However, this reconstruction requires knowing the delay. We propose a method based on the use of unknown input polytopic observers, to estimate the unknown delay and the encrypted information. The obtained simulation results show the effectiveness of this method.

Keywords: chaotic communication; secure transmission; synchronisation; delayed system; LPV system; unknown input observer.

DOI: 10.1504/IJCAT.2019.100138

International Journal of Computer Applications in Technology, 2019 Vol.60 No.2, pp.175 - 182

Received: 16 Jun 2017
Accepted: 26 Sep 2018
Published online: 10 Jun 2019 *

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