A color image encryption algorithm based on DNA computation and Chen system

Abstract

To improve the security performance of color images encrypted, a new color image encryption algorithm based on DNA computation and Chen system is proposed. In the proposed algorithm, the chaotic sequences generated by Chen system are applied to the permutation and confusion phase of image encryption. And the mean value of image pixel of each component of a color image is used as the part of the initial conditions of Chen system, which makes that different original images have different secret keys. Besides, the proposed DNA operations can break the bit planes of the plaintext image entirely. Simulation results show that the proposed algorithm is suitable for color image encryption. Therefore, the proposed algorithm can enhance the sensitivity to the plaintext image and resist differential attack, brute-force attack, and statistical attack.