Heyszl, Johann, Katja Miller, Florian Unterstein, Marc Schink, Alexander Wagner, Horst Gieser, Sven Freud, Tobias Damm, Dominik Klein, and Dennis Kügler. “Investigating Profiled Side-Channel Attacks Against the DES Key Schedule”. IACR Transactions on Cryptographic Hardware and Embedded Systems 2020, no. 3 (June 19, 2020): 22–72. Accessed January 15, 2025. https://tosc.iacr.org/index.php/TCHES/article/view/8582.