Enhanced Image Security Using Chaos and DNA Coding

Abstract: In todays realm cryptography plays a role, across various sectors. Image encryption stands out as an aspect in safeguarding data due to its ranging applications in areas like defense, multimedia, healthcare and more. This article introduces an image encryption technique designed for both grayscale and color images using the Tangential Delay Ellipse Reflecting Curve System (TD ERCS) chaotic map system and DNA coding. The chaotic map is employed to shuffle positions for confusion and mask image creation while DNA coding alters pixel values for diffusion. Through evaluation the proposed method demonstrated high mean square error and low peak signal to noise ratio, near zero correlation, a high rate of pixel changes consistent average intensity value changes, as well as resilience, against noise and data loss attacks. Furthermore decryption can be carried out without compromising the image quality. Keywords: Image encryption, Color image, Chaotic map, DNA coding, AES, IDEA, DES