8 x 8 S-boxes over Klein four-group and Galois field GF(24): AES redesign

This research paper is supplemented with a unique formation to design state-of-the-art Sboxes. The invented approach is simple but has the capability of creating confusion in our newly proposed algorithm. Our core planned work refined the method of already designed S -boxes to accomplish more compact ones. Various structures were merged here, namely affine transformation, fractional linear transformation, structure of Klein four -group, and the algebraic structures of the Galois fields, GF(2(4)) and GF(2(8)). These structures were utilized to synthesize newly 1600 robust S -boxes. Besides, we discussed encryption steps of AES with these newly generated S -boxes. We highlighted some specific characteristics, performance of parameter's improvement, and their utilization. Nonlinear properties were mainly set to inspect the behavior of I/O bits and could apply image encryption. Then, the performance of proposed S -boxes and newly structured AES was tested in comparison with other prevailing S -boxes.