COMPARISON OF RANDOM S-BOX GENERATION METHODS


Dragan Lambić, Miodrag Živković




Random bijective S-box generation methods are considered. An alternative S-box generation method by forming compositions of permutations from some fixed set is proposed. Experiments show that the rate of acceptable S-boxes for all the methods considered is essentially the same. The advantage of the composition method is an obvious parametrization, with the potentially large key space.