Shen, Yaobin, Chun Guo, and Lei Wang. “Improved Security Bounds for Generalized Feistel Networks”. IACR Transactions on Symmetric Cryptology 2020, no. 1 (May 7, 2020): 425–457. Accessed March 28, 2024. https://tosc.iacr.org/index.php/ToSC/article/view/8571.