Color Image Encryption using Synchronous CML-DNA and Weighted Bi-objective Genetic Algorithm
Mohit Dua, Aishwarya Wesanekar, Vishwas Gupta, Mayank Bhola, Shelza Dua · 2019
The proposed work in this paper exhibits a synchronous permutation-diffusion color image encryption technique that exploits Coupled Map Lattice (CML) and Deoxyribonucleic acid (DNA). Weighted Bi-objective Genetic Algorithm (BOGA) based on both entropy and Correlation Coefficient (CC) is also applied for the optimization of the same. The proposed algorithm presents an efficacious scheme which is based on three phases: Permutation, Diffusion and Optimization. The first phase involves permuting the original image pixels using three chaotic sequences produced by CML with three different initial parameters. The second phase comprises of diffusion of the permuted pixels using DNA XOR operation. The last phase optimizes the entropy as well as CC, generating efficient results of encryption. The results confirm that the using BOGA along with synchronous CML-DNA meaningfully improves the encryption performance.