A dynamic S-box generation based on a hybrid method of new chaotic system and DNA computing

Abstract

S-box is one of the most significant structures used to construct encryption that is strong and resistant to attacks in encryption algorithms. The new 4D-hyper chaotic system and deoxyribonucleic acid (DNA) computing are used in this paper to provide a new dynamic S-box generating approach. The 4D generated numbers are processed to generate a hexadecimal number that will encode using the DNA coding method and using addition, subtraction, and exclusive-or operations to produce the final DNA string decoded to make the S-Box. The dynamic form of s-boxes is represented by a minor change in the initial conditions of the proposed chaotic method that will generate dynamic sequences of numbers. The proposed method enhances the security criteria of the block ciphers. The S-box testing criteria were done like strict avalanche, balanced, and bit independence criteria, in addition to differential approximation probability and linearity approximation probability, to test the security of the new S-Box. The results show that the new S-box has good security and is resistant to attacks.

Multiple Random Keys for Image Encryption Based on Sensitivity of a New 6D Chaotic System

“…The Table (7) presents a comparison of a proposed algorithm with six algorithms from literature based on two performance metrics: NPCR and UACI. The proposed algorithm achieved an NPCR value of 99.6002, which is slightly lower than Algorithm [1] (99.9353), but higher than Algorithms [2][3][4][5][6] (ranging from 99.65 to 99.617). The proposed algorithm also achieved a higher UACI value of 35.3623, as compared to all six previous algorithms (ranging from 33.38 to 33.64).…”

“…Algorithm number (4) is for researchers D. Zhang, L. Chen, T. Li, published in 2021 [16]. Algorithm number (5) 2020 [17]. Algorithm number ( 6) is for researchers R. Lin, S. Li, published in 2021 [18].…”

“…As a result, it could offer a fast and secure means for protecting data that is transmitted over communication channels such as the internet. Some researchers proposed chaos-based image encryption algorithm to provide high security and efficiency, chaotic systems have many desirable cryptography features, and can achieve confusion and diffusion proprieties related with cryptographic system [5,6].…”

AES Security Improvement by Utilizing New Key-Dependent XOR Tables

“…In addition to the above research directions, there are studies currently underway that aim to create dynamic block ciphers based on DNA and chaotic maps, as demonstrated in [41], [42], [43]. In [41], a 4D-hyper system using chaotic maps and DNA calculating are employed to produce a dynamic S-box.…”

“…Some studies animating both the S-boxes and the MixColumn transformation of AES are also of interest [38], [39], [40]. In addition to the above research directions, some studies work on making block ciphers dynamic based on deoxyribonucleic acid (DNA) and on chaotic maps [41], [42], [43]. The works noted above study how to animate AES at the diffusion layer, substitution layer, or both, or how to make block ciphers dynamic based on DNA and chaotic maps.…”