Banik, Subhadeep, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, and Santanu Sarkar. “Atom: A Stream Cipher With Double Key Filter”. IACR Transactions on Symmetric Cryptology 2021, no. 1 (March 19, 2021): 5-36. Accessed July 28, 2021. https://tosc.iacr.org/index.php/ToSC/article/view/8832.