Confusion Diffusion Eliezer Dor The article states that the substitution S boxes and the permutation from P box and the E expansion provides so called confusion and diffusion respectively I suggest removing the word respectively While it is true that S boxes and substitutions in general provice confusion it is not true that transposition by itslf provides diffusion Rather the S box function provides diffusion within the limited scope of its action while the transpositions permutations and selections help expand the scope of this diffusion to the full state