TY  - EJOU
AU  - Mahboob, Abid 
AU  - Asif, Muhammad 
AU  - Zulqarnain, Rana Muhammad 
AU  - Siddique, Imran 
AU  - Ahmad, Hijaz 
AU  - Askar, Sameh 
AU  - Pau, Giovanni 

TI  - An Innovative Technique for Constructing Highly Non-Linear Components of Block Cipher for Data Security against Cyber Attacks
T2  - Computer Systems Science and Engineering

PY  - 2023
VL  - 47
IS  - 2
SN  - 

AB  - The rapid advancement of data in web-based communication has created one of the biggest issues concerning the security of data carried over the internet from unauthorized access. To improve data security, modern cryptosystems use substitution-boxes. Nowadays, data privacy has become a key concern for consumers who transfer sensitive data from one place to another. To address these problems, many companies rely on cryptographic techniques to secure data from illegal activities and assaults. Among these cryptographic approaches, AES is a well-known algorithm that transforms plain text into cipher text by employing substitution box (S-box). The S-box disguises the relationship between cipher text and the key to guard against cipher attacks. The security of a cipher using an S-box depends on the cryptographic strength of the respective S-box. Therefore, various researchers have employed different techniques to construct high order non-linear S-box. This paper provides a novel approach for evolving S-boxes using coset graphs for the action of the alternating group  over the finite field and the symmetric group . The motivation for this work is to study the symmetric group and coset graphs. The authors have performed various analyses against conventional security criteria such as nonlinearity, differential uniformity, linear probability, the bit independence criterion, and the strict avalanche criterion to determine its high cryptographic strength. To evaluate its image application performance, the proposed S-box is also used to encrypt digital images. The performance and comparison analyses show that the suggested S-box can secure data against cyber-attacks.
KW  - Block cipher; coset graphs; s-box; triangular group

DO  - 10.32604/csse.2023.040855