An image encryption algorithm using two-dimensional chaotic map and DNA coding
Hengfei Chen, Jiming Zheng · 2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence (ICIBA) · 2021
By improving the typical Sine map and Logistic map, a 2D chaotic map with good pseudo-randomness and a large chaotic range of parameters is derived. Based on the characteristics of DNA coding, an efficient image encryption algorithm is designed by combining chaotic map with DNA coding. Firstly, the image is divided into 8-bit planes by bit level operation, and the bit plane is divided into two modules by parity separation strategy. Then, the different DNA coding rules are used to encode the image, and then the DNA XOR is used to conduct the diffusion operation. After the diagonal diffusion on the image, the inverse diagonal diffusion is carried out. The image is divided into four blocks, and the diffusion operation is carried out within the four blocks. Simulation results and security analysis show that the proposed image encryption scheme has certain advantages compared with some existing methods.