Generation of grid multi-wing chaotic attractors and its application in video secure communication system
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Generation of grid multi-wing chaotic attractors and its application in video secure communication system Ying Li 1 & Zhijun Li 1
1
& Minglin Ma & Mengjiao Wang
1
Received: 21 September 2019 / Revised: 22 July 2020 / Accepted: 28 July 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract
In order to study the application of chaos in video image encryption, a real-time video secure communication system based on a new grid multi-wing chaotic system is proposed in this paper. First, by introducing sawtooth wave functions to the Lorenz system, a new grid multiwing butterfly chaotic system with complicated dynamical behaviors is obtained. Compared with the existing multi-scroll and multi-wing chaotic systems, The system structure is simple and more easier to be implemented in a digital system. Then, a chaos-based pseudorandom random number generator is developed by implementing post-processing procedure. The present video secure communication system is designed with the closed-loop feedback scheme. The corresponding hardware implementation is developed by FPGA platforms, and the experimental results are given to verify its feasibility. Furthermore, a series of widely used secure analyses are applied to prove that the system has good security performance. Keywords Multi-wingchaoticsystem . Random numbergenerator . Video securecommunication . FPGA
1 Introduction The rapid development of communication technology has greatly arisen the significance of the security of information. However, traditional text encryption techniques cannot protect multimedia signal efficiently due to the existence of great differences between multi-media signal and text [23]. In recent years, researchers have attempted a great variety of approaches to deal with this challenge. By virtue of the intrinsic characteristics of chaotic systems, such as complex dynamics, quasi-randomness and sensitivity on initial conditions and system parameters, the chaos-based encryption scheme has attracted increasing interest.
* Zhijun Li [email protected]
1
College of Information Engineering, Xiangtan University, Xiangtan 411105 Hunan, China
Multimedia Tools and Applications
Compared with the traditional single scroll and double-scroll chaotic systems, multi-scroll or multi-wing chaotic systems can exhibit more complex dynamics, which are more suitable for chaotic secure communication [36]. There has been a series of researches on multi-scroll chaotic systems in recent years. For example, Ben Slimane et al constructed a multi-scroll chaotic system by operating a Logistic map with fractal process [6]. Then in the field of multiwing chaotic systems, Bouallegue et al used Julia process fractal [7] and Lai et al used switching method and coordinate transition method to generate multi-wing attractors [22]. Zhang et al construct a series of multi-wing chaotic systems with complicated dynamical behaviors [39–42]. Yu et al proposed grid multi-wing butterfly attractors by constructing heteroclinic loops [37]. Then in [18], the ge
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