Image encryption application based on three-dimensional discrete hyperchaotic system
Lijie Wang, Xiyin Liang · 2024
With the development of the information technology era, the exchange of information between people is gradually increasing, and digital images, as the most commonly used information carrier, need more protection. The encryption method based on chaotic systems for digital images often has broad application prospects in the field of image encryption due to its similarity with cryptography. This paper improves a new three-dimensional discrete hyperchaotic system based on the traditional one-dimensional logistic chaotic mapping and analyzes the chaos of the system. When encrypting images, the commonly used image encryption techniques are scrambling and diffusion; This paper first pre-processes the image, then uses an improved Arnold map to scramble the image, and finally diffuses the pseudo-random sequence generated by the three-dimensional discrete hyperchaotic system with the scrambled image. Through experimental analysis of image histograms, image information entropy, and other data, it has been proven that the improved system has a good encryption effect on image encryption.