An application of the O'Nan-Scott theorem to the group generated by the   round functions of an AES-like cipher
  In a previous paper, we had proved that the permutation group generated by the round functions of an AES-like cipher is primitive. Here we apply the O'Nan Scott classification of primitive groups to prove that this group is the alternating group. 
A. Caranti, F. Dalla Volta, M. Sala