Fig 1.
Proposed methodology for S-box design.
Fig 2.
Coset diagram corresponding to the permutation group G.
Table 1.
Generation of the proposed S-box elements based on a transformation T8.
Table 2.
Proposed S-box (S1) in 16 × 16 matrix form—Generated with T1.
Table 3.
Proposed S-box (S2) in 16 × 16 matrix form—Generated with T2.
Table 4.
Proposed S-box (S3) in 16 × 16 matrix form—Generated with T3.
Table 5.
Proposed S-box (S4) in 16 × 16 matrix form—Generated with T4.
Table 6.
Proposed S-box (S5) in 16 × 16 matrix form—Generated with T5.
Table 7.
Proposed S-box (S6) in 16 × 16 matrix form—Generated with T6.
Table 8.
Proposed S-box (S7) in 16 × 16 matrix form—Generated with T7.
Table 9.
Proposed S-box (S8) in 16 × 16 matrix form—generated with T8.
Table 10.
Numerical results of the S-box testing parameters obtained for our proposals in comparison with the existing S-boxes.
Table 11.
Statistical analysis parameters with description and formulae.
Table 12.
Comparison of statistical analysis parameters obtained for plain and encrypted Baboon images.
Fig 3.
Image encryption using the proposed S-box design.
(a) Plain Baboon color image, (b) Plain Baboon gray-scale image, (c) Encrypted Baboon image using AES S-box, (d) Encrypted Baboon image using proposed S-box (S2), (e) Encrypted Baboon image using proposed S-box (S5), and (f) Encrypted Baboon image using proposed S-box (S7).