A Novel Construction of Substitution Box Based on Polynomial Mapped and Finite Field With Image Encryption Application
In the modern block cipher, the substitution box (S-box) is a nonlinear constituent that plays a substantial role to create the confusion in ciphertext.S-boxes with low value of differential uniformity and high value of nonlinearity are considered more secure against cryptanalysis attacks.For the construction of $8 imes 8$ S-boxes, an efficient and