Caforio, Andrea, Subhadeep Banik, Yosuke Todo, Willi Meier, Takanori Isobe, Fukang Liu, and Bin Zhang. “Perfect Trees: Designing Energy-Optimal Symmetric Encryption Primitives”. IACR Transactions on Symmetric Cryptology 2021, no. 4 (December 3, 2021): 36–73. Accessed February 7, 2023. https://tosc.iacr.org/index.php/ToSC/article/view/9328.