Secure Image Transmission Using Fractional Variable Order Memristive Hyperchaotic System With Nonlinear Synchronization
Shah Sawar, Sadam Hussain, Muhammad Ayaz · Advances in Analysis and Applied Mathematics · 2025
This work presents a secure image transmission method based on a newly developed fractional variable-order memristive hyperchaotic system. A nonlinear feedback controller is designed to achieve fast and accurate synchronization between the transmitter and receiver systems. We use the synchronized output to generate a chaotic key stream for grayscale image encryption and decryption. The proposed approach is evaluated through simulations that confirm precise synchronization, strong key sensitivity, and successful image recovery. Quantitative metrics such as PSNR above 48 dB and correlation coefficients near 1.0000 validate the method's robustness and effectiveness. Compared to conventional chaos-based schemes, this model offers improved flexibility, higher complexity, and stronger resistance against cryptographic attacks, making it suitable for lightweight and secure communication systems.