Abdelkhalek, Ahmed, Yu Sasaki, Yosuke Todo, Mohamed Tolba, and Amr M. Youssef. 2017. “MILP Modeling for (Large) S-Boxes to Optimize Probability of Differential Characteristics”. IACR Transactions on Symmetric Cryptology 2017 (4):99-129. https://doi.org/10.13154/tosc.v2017.i4.99-129.