Liu, Zhengbin, Yongqiang Li, and Mingsheng Wang. “Optimal Differential Trails in SIMON-Like Ciphers”. IACR Transactions on Symmetric Cryptology 2017, no. 1 (March 8, 2017): 358–379. Accessed May 24, 2025. https://tches.iacr.org/index.php/ToSC/article/view/598.