Design Of Memristive Chaotic Circuit And Its Application In Image Encryption

Chaotic systems and hyperchaotic systems are widely used in different fields,and people design some chaotic systems with rich dynamic characteristics according to chaos theory to meet different needs.The current popular research direction is fractional-order chaotic systems and hyperchaotic systems with hidden attractors.The study of such chaotic systems with rich dynamical behaviors and more sensitive to initial conditions can provide guidance for specific applications of chaos and improve the flexibility of engineering applications.With the gradual development of power systems in the direction of intelligence,inspection methods for overhead transmission lines are also advancing with the times and are transitioning from traditional manual inspections to drone inspections.UAV inspections solve the problems of low manual inspection efficiency,high labor intensity,and inability to guarantee inspection quality.At the same time,it also brings the hidden danger of confidential information leakage.At present,drones for inspections of transmission lines are mostly for civilian use.Consumer-grade drones do not provide adequate protection for aerial image data,and data security risks have risen significantly.Therefore,it is necessary to find ways to encrypt aerial image data.Image data has the characteristics of large data volume and strong correlation between adjacent pixels,which makes the traditional text information encryption method not suitable for image encryption.The chaotic image encryption method is a kind of spatial image encryption,which is characterized by treating the image as a two-dimensional image.This encryption method not only protects the aerial image data,but also improves the efficiency of image encryption.The complexity of chaotic systems and the randomness of the generated signals have a great impact on the performance of chaotic image encryption.The unique nonlinear characteristics of memristors can significantly increase the complexity of chaotic systems and the randomness of the generated signals by introducing the memristor model into chaotic systems.The main research results of the paper are as follows.Based on the Moore-Spiegel chaotic system model,a memristor is introduced to obtain a chaotic system with infinite number of equilibrium points and coexisting hidden attractor memristors.The equilibrium points and stability of this hyperchaotic system are studied,the phase diagram,bifurcation diagram and Lyapunov exponential map of this hyperchaotic system are made and the Lyapunov dimension of this system is calculated.It is found that the new chaotic system has coexisting hidden attractors and it exhibits different characteristics when the parameters of the chaotic system are changed.The dynamic characteristics of the newly constructed memristor chaotic system are obvious and its dynamic behavior is unpredictable.The sequence generated by this chaotic system has good randomness and is suitable for image encryption.This amnesia-resistive chaotic system is used to implement the encryption and decryption functions of digital images and the experimental demonstration of the encryption and decryption performance,and anti-attack capability of the method confirms the reliability and practicality of the method.Figure 36 Table 4 Reference 80...