关键词: 反馈神经网络, 混沌, Lorenz系统, 图像加密, 置乱

Abstract: For most of chaotic image encryption methods, pixel is often seen as a whole unit to process in pixel value scrambling. It is very weak to resist known cleartext attack. Aiming at the problem, a high dimension chaotic encryption method based on discrete Hopfield feedback neural network is proposed. In the process of pixel value scrambling, each bit of pixel is the handle object. So the scrambling of each pixel value is a composite process. The validity of this method is verified through experimental results.

Key words: feedback neural network, chaos, Lorenz system, image encryption, scrambling