关键词: 加密芯片, 图像置乱, Arnold 变换, FPGA, 硬件加密

Abstract: In the era of 5G and IoT, the development of domestically produced encryption chips is a key issue in the field of information security research. A considerable number of devices generate image data for users to view and use. Common RSA algorithm, DCT domain image watermarking algorithm, Rossler chaotic transform algorithm, and Arnold transform algorithm can realize software level image encryption. However, there are few hardwareencrypted image encryption chip schemes. In order to ensure user data security, this paper takes the shuffling algorithm commonly used in image encryption as an example to realize arbitrary square size on FPGA. The Arnold encryption algorithm of the image provides a reference for the hardwareization of the image scrambling algorithm. Even if some algorithms in the software are very simple , in the hardware to implement, they all need a large number of digital circuit components to complete. This article focuses on the use of algorithms that have been proven to be effectively encrypted in software, trying to apply them to hardware in the hope of achieving lowcost hardware encryption. The experimental results of this paper show that when the FPGA transform is realized, the execution speed is many times faster than the speed of using the computer to realize Arnold transform.

Key words: encryption chip, image shuffling, Arnold transform, FPGA, hardware encryption