Yang, Zheng, Zhiting Bao, Chenglu Jin, Zhe Liu, and Jianying Zhou. “PLCrypto: A Symmetric Cryptographic Library for Programmable Logic Controllers”. IACR Transactions on Symmetric Cryptology 2021, no. 3 (September 17, 2021): 170–217. Accessed January 18, 2025. https://icscm.ub.rub.de/index.php/ToSC/article/view/9178.