A Color-Image Encryption Scheme Using a 2D Chaotic System and DNA Coding

Abstract

This paper proposes a method of encrypting images with password protection for secure sharing based on deoxyribonucleic acid (DNA) sequence operations and the tangent-delay ellipse reflecting the cavity-map system (TD-ERCS). The initial values of the TD-ERCS system are generated from a user’s password, and the TD-ERCS system is used to scramble the pixel locations of the R, G, and B matrices of the original image. Next, three DNA-sequence matrices are generated by encoding the permuted color image such that it can be transformed into three matrices. Then, the TD-ERCS system is employed to generate three chaotic sequences before encoding the DNA into the three matrices. Thereafter, a DNA exclusive OR (XOR) operation is executed between the DNA sequences of the permuted image and the DNA sequences generated by the TD-ERCS system to produce three encrypted scrambled matrices. Finally, the matrices of the DNA sequences are decoded, and the R, G, and B channels are recombined to form an encrypted color image. The results of simulation and security tests reveal that the proposed algorithm offers robust encryption and demonstrates the ability to resist exhaustive, statistical, and differential attacks.

Chaos and DNA coding technique for image cryptography

“…However, they fail to protect the image against transmission noise, which can be introduced during the transmission process of image. 1 In cryptography, actual data is converted to meaningless form. To protect images, image encryption algorithms are vital.…”

“…AES, International Data Encryption Algorithm (IDEA) and DES are some traditional block encryption approaches that can only encrypt images effectively to certain extent. However, they fail to protect the image against transmission noise, which can be introduced during the transmission process of image 1 …”

“…Lots of scheme based on chaos have been developed 7 . However not all the chaos‐based image encryption schemes are secure 1 . Also some of the existing chaos‐based image encryption schemes that have been developed are for particular types of images, such as, in Reference 4, image encryption scheme for grayscale has been proposed and in References 1,8–11 encryption scheme have been developed for color images.…”

An Image Encryption Scheme Based on IAVL Permutation Scheme and DNA Operations

“…The DNA computing algorithm has advantages which include high parallelism, ultra-low power consumption and big information density. So, image encryption combined with the DNA computing algorithm and the chaotic map is born which is used to solve this problem [34][35][36][37][38][39][40][41][42][43][44][45]. An image encryption based on dynamic DNA encoding was proposed by Aditya et al [34].…”

A gray image encryption algorithm based on 3D chaotic map and DNA operations

“…Therefore, a new area of DNA image encryption has emerged. With the application of DNA addition, subtraction, XOR, and complementation in the field of image encryption, researchers found that an encryption system based on chaotic systems and DNA computing is easier to implement while ensuring image security [19][20][21][22][23][24][25][26]. For example, Chai al.…”