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Images encryption based on robust multi-mode finite time synchronization of fractional-order hyper-chaotic Rikitake systems by Ali Akbar Kekha Javan; Assef Zare is a Computer Science article available to read on EtoBox.

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The main goal of this paper is to design a finite time multiple synchronization controller for fractional order hyper chaotic Rikitate systems. In this article, systems are considered with unknown delays and unknown parameters and synchronization is performed in the presence of disturbance and uncertainty. In the proposed method, adaptive rules for estimating unknown parameters, disturbance bounds and uncertainties as well as control efforts for synchronization in finite time are obtained with the help of Lyapunov's stability theorem. Synchronization errors have converged to zero in finite time. Also, the encryption performance of images and their transmission was investigated based on the proposed multimode synchronization algorithm. Additionally, the histogram diagram of several encrypted images was shown based on the synchronization techniques of the fractional-order Rikitake system. A number of statistical parameters including histogram, correlation, NPCR, UACI, PSNR, and information entropy were calculated for the encrypted images in order to indicate the performance and compare the two proposed synchronization methods. Finally, satisfactory results in different image encrypti

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Author

Ali Akbar Kekha Javan; Assef Zare

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Computer Science (Physical Sciences)