Image Encryption Algorithm Based on Compound Chaotic System and DNA Coding

Abstract

Aiming at the problems of image encryption, such as poor encryption effect and poor security, a compound chaotic map ILSC is designed with Logistic map and Sine map as seed maps. Based on this, an image encryption algorithm based on compound chaotic system and dynamic DNA coding is proposed. First, according to the DNA random coding rules, the plaintext image is converted into a DNA matrix, and the scrambling operation is performed on it, and then the rows and columns of the DNA matrix are XORed to obtain the ciphertext image. Theoretical analysis and simulation results show that the proposed algorithm has a larger key space, the ciphertext image has higher information entropy, and can effectively resist statistical attacks, brute force attacks and other attack methods, and has better performance.