Image encryption method based on random number embedding and DNA dynamic coding

• Main Authors: CHAI XIULI, ZHI XIANGCHENG, LU YANG, GAN ZHIHUA, WANG JUAN, BI JIANQIANG
• Format: Patent
• Language: Chinese; English
• Published: 13.12.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides an image encryption method based on random number embedding and DNA dynamic coding, and the method comprises the steps: firstly embedding a random number into a plaintext image,and carrying out the preprocessing operation; then, performing DNA dynamic coding on the preprocessed image, then, generating a scrambled position sequence by utilizing a chaotic sequence to completescrambling operation on a sequence after plaintext image DNA coding, and introducing plaintext-related DNA fixed feature information in a scrambling process to disturb generation of a scrambling sequence; and then performing exclusive OR operation on the scrambled DNA sequence of the plaintext image and the mask sequence generated by the chaotic system to complete diffusion; finally, carrying outDNA dynamic decoding on the diffusion DNA sequence to obtain a ciphertext image. According to the method, the problem that some image encryption algorithms are invalid for scrambling of special images (all-black and all-white