Workshop on Classic, Quantum, and Post-Quantum Cryptography CQPC’2024 August 6, 2024 Kyiv, Ukraine CEUR ceur-ws.org Workshop ISSN 1613-0073 Proceedings Workshop on Classic, Quantum, and Post-Quantum Cryptography (CQPC), ed. V. Sokolov, V. Ustimenko, M. Nazarkevych, Borys Grinchenko Kyiv Metropolitan University, Kyiv, Ukraine, Aug. 6, 2024. The aim of the Classic, Quantum, and Post-Quantum Cryptography (CQPC) workshop is to provide a forum for researchers to discuss current trends, methods, models, and algorithms in classic, quantum, and post-quantum cryptography. In CQPC, we encourage the submission of papers in the field of cryptography. Novel approaches and applications of these methods to real-world problems are welcome. Wholeheartedly all the researchers who work in all areas of CQPC to take part in the workshop and publish the research results. There were 19 papers submitted for peer review to this workshop. Out of these, 11 papers were accepted for this volume, 1 as regular papers and 10 as short papers. The workshop is co-located with the International Conference “Problems of Infocommunications. Science and Technology” (IEEE PIC S&T′2024). Borys Grinchenko Kyiv Metropolitan University, 13b Levka Lukianenka str., Kyiv, 04212, Ukraine CEUR Workshop Proceedings ISSN: 1613-0073 Creative Commons License Attribution 4.0 International (CC BY 4.0) © 2024 Classic, Quantum, and Post-Quantum Cryptography Editors and Organizing Committee Editor Editor PhD, Associate Professor DSc, Professor Volodymyr Sokolov Vasyl Ustimenko Borys Grinchenko Kyiv Metrop. Univ., Ukraine Royal Holloway, Univ. of London, UK Editor Publicity Chair DSc, Professor PhD, Associate Professor Mariya Nazarkevych Pavlo Skladannyi Lviv Polytech. Natl. Univ., Ukraine Borys Grinchenko Kyiv Metrop. Univ., Ukraine Programme Committee DSc, Professor DSc, Professor Ivan Opirskyy Maryna Yevdokymenko Lviv Polytech. Natl. Univ., Ukraine Kharkiv Natl. Univ. of Radioelectron., Ukraine DSc, Professor DSc, Professor Oleksii Smirnov Hennadii Hulak Cent. Ukr. Natl. Tech. Univ., Ukraine Borys Grinchenko Kyiv Metrop. Univ., Ukraine DSc, Professor DSc, Professor Sergiy Gnatyuk Dmytro Ageyev Natl. Aviat. Univ., Ukraine Kharkiv Natl. Univ. of Radioelectron., Ukraine DSc, Professor DSc, Professor Serhii Toliupa Marek Aleksander Państw. Wyzsza Szkoła Zaw. w Nowym Saczu, Taras Shevchenko Natl. Univ. of Kyiv, Ukraine Poland DSc, Professor DSc, Professor Tamara Radivilova Valeriy Lakhno Kharkiv Natl. Univ. of Radioelectron., Ukraine Natl. Univ. of Life and Environ. Sci. of Ukraine