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    <journal-meta>
      <journal-title-group>
        <journal-title>CEUR-WS</journal-title>
      </journal-title-group>
      <issn pub-type="ppub">1613-0073</issn>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Classic, Quantum, and Post-Quantum Cryptography</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Volodymyr Sokolov</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Assoc.</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Borys Grinchenko Kyiv Metropolitan University</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Ukraine</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Vasyl Ustimenko DSc</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Royal Holloway</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>University of London</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Mariya Nazarkevych DSc</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Lviv Polytechnic National University</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Ukraine</string-name>
        </contrib>
      </contrib-group>
      <pub-date>
        <year>2025</year>
      </pub-date>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>-</title>
      <p>Workshop on Classic, Quantum, and Post-Quantum Cryptography (CQPC), eds. V. Sokolov,
V. Ustimenko, M. Nazarkevych, Borys Grinchenko Kyiv Metropolitan University, Kyiv, Ukraine, Aug. 5,
2025.</p>
      <p>The aim of the 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 11 papers submitted for peer review to this workshop. Out of these, 6 papers were
accepted for this volume, 5 as regular papers and 1 as short papers.</p>
      <p>The workshop is co-located with the International Conference “Problems of Infocommunications.
Science and Technology” (IEEE PIC S&amp;T′2025).</p>
      <p>Borys Grinchenko Kyiv Metropolitan University
18/2 Bulvarno-Kudriavska str.
04053 Kyiv, Ukraine
CEUR-WS
ISSN: 1613-0073
Creative Commons License Attribution 4.0 International (CC BY 4.0)
© 2025 Cybersecurity Providing in Information and Telecommunication Systems
Editors
Regular Papers</p>
      <p>Development and Research of a Non-Periodic Pseudorandom Number Generator
Andriy Horpenyuk, Mykola Horpenyuk, Nataliya Luzhetska,</p>
      <p>Oleksandr Horpenyuk, Аlona Desiatko
Adaptive Methods for Embedding Digital Watermarks to Protect Audio
and Video Images in Information and Communication Systems</p>
      <p>Pavlo Skladannyi, Yuliia Kostiuk, Svitlana Rzaieva, Bohdan Bebeshko,</p>
      <p>Nataliia Korshun
On Algebraic Graphs of Large Girth and New Families of Message
Authentication Codes</p>
      <p>Vasyl Ustimenko, Oleksandr Pustovit
1–12
13–31
32–44
45–65
66–75
76–84</p>
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