Optical image encryption scheme based on quantum cellular neural networks hyperchaotic system

摘要

We propose a new method for optical image encryption using Quantum Cellular Neural Networks (QCNN) hyperchaotic system and fractional Fourier transform. In order to improve the situation of low nonlinear degree in existing optical encryption system, we use QCNN system to encrypt/decrypt the optical image. Due to the hyperchaotic characteristic of QCNN make up the linear feature in traditional double random phase encoding optical encryption technology, our encryption algorithm has a large key space, strong anti-attack capability. In addition, Quantum dots and Quantum Cellular Automata (QCA) as a new type of semiconductor nano-materials have many unique nano-features. The computer simulations are presented to verify the validity of the proposed scheme.