Real-time fuzzy-pid synchronization of memristor-based chaotic circuit using graphical coded algorithm in secure communication applications

Abstract

The main goal of this study is to implement real-time synchronization of a memristor-based chaotic circuit for secure communication on LabVIEW virtual instrument environments. Memristors can be used in chaotic circuits because of their nonlinear behavior. In this paper, an application for secure communication systems is proposed by using the chaotic property of the memristor. Phase portraits, Lyapunov exponential spectrum, and bifurcation diagrams of the memristor-based chaotic circuit were investigated. A Fuzzy-PID controller was used for master-slave synchronization of memristive chaotic circuit and in secure communication application, three images were also used for encryption and decryption. NI 6251 DAQ card was used to obtain real-time results. Information entropy values, correlation coefficients (CC), peak signal to noise ratio (PSNR), structural similarity index (SSIM), correlation coefficients for the horizontal, vertical and diagonal directions from the three encrypted images, number of pixels change rate (NPCR) and unified average changing intensity (UACI) are calculated to test encryption/decryption performance in the designed system. The results obtained from real-time applications and simulations prove that memristor-based chaotic circuits can be used in secure communication systems where privacy is important.

Design and analysis of image encryption based on memristor chaotic systems with hidden attractors

“…Concurrently, researchers have also found that the characteristics of chaotic systems, such as ergodicity, unpredictability, extreme sensitivity to initial conditions, and pseudo-randomness, are strikingly similar to those of cryptography. Consequently, chaotic systems have found widespread applications in information security, including digital image encryption [13][14][15] and secure communication [16][17][18].…”

A secure communication scheme based on generalized modified projective synchronization of a new 4-D fractional-order hyperchaotic system

“…In recent decades, there has been a great interest in chaos phenomena due to their important applications in several areas. Cryptography [1,2], biology [3,4], ecology [5,6], memristors [7,8], lasers [9,10], neural networks [11,12], finance [13,14], secure communications [15][16][17] are some well-known fields where the chaotic systems are applied in practice. Hyperchaotic systems are defined as continuous-time chaotic systems that exhibit what is called sensitive dependence on initial conditions with more than one positive Lyapunov exponent.…”

Memristive chaotic system-based hybrid image encryption application with AES and RSA algorithms

“…Hence, further research into the dynamics of memristive systems is warranted [23][24][25][26][27][28]. Several studies have been published in recent years on memristor-based chaotic systems and their applications in image encryption [29][30][31][32][33][34]. Chaotic systems, such as the logistic map, Lorenz system, and Chua circuit, are the focus of cryptography research in the literature [35][36][37].…”