== 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.