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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2026-26-2-442-445</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-608</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF PAPERS</subject></subj-group></article-categories><title-group><article-title>Забывчивая подпись на основе теории изогений эллиптических кривых</article-title><trans-title-group xml:lang="en"><trans-title>Oblivious signature based on the theory of elliptic curve isogeny</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5494-7142</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хуцаева</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Khutsaeva</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хуцаева Алтана Феликсовна — аспирант; ассистент</p><p>Санкт-Петербург, 197101</p><p>Санкт-Петербург, 190000,</p></bio><bio xml:lang="en"><p>Altana F. Khutsaeva — PhD Student; Assistant</p><p>Saint Petersburg197101</p><p>Saint Petersburg, 190000</p><p>sc 57884754300,</p></bio><email xlink:type="simple">afkhutsaeva@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО; Санкт-Петербургский государственный университет аэрокосмического приборостроения</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University; Saint Petersburg State University of Aerospace Instrumentation (SUAI)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>20</day><month>04</month><year>2026</year></pub-date><volume>26</volume><issue>2</issue><fpage>442</fpage><lpage>445</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хуцаева А.Ф., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Хуцаева А.Ф.</copyright-holder><copyright-holder xml:lang="en">Khutsaeva A.F.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://ntv.elpub.ru/jour/article/view/608">https://ntv.elpub.ru/jour/article/view/608</self-uri><abstract><p>В работе представлена новая схема постквантовой забывчивой подписи типа 1-из-n, построенная на изогениях суперсингулярных эллиптических кривых. В качестве основы использована схема Commutative Supersingular Isogeny based Fiat-Shamir, стойкость которой опирается на предположение о сложности многоцелевой задачи обращения группового действия. Такой подход обеспечивает устойчивость к атакам с использованием алгоритма Шора. Формализованы алгоритм генерации ключей, протокол интерактивного формирования подписи и алгоритм верификации. Экспериментальная оценка в среде SageMath демонстрирует более чем трехкратное снижение объема передаваемых данных относительно аналога на решетках.</p></abstract><trans-abstract xml:lang="en"><p>This paper presents a novel 1-out-of-n post-quantum oblivious signature scheme based on supersingular elliptic curve isogenies. The proposed scheme is built upon the Commutative Supersingular Isogeny based Fiat-Shamir scheme whose security relies on the hardness assumption of the multiple-target group action inverse problem. This approach ensures resistance against attacks using Shor’s algorithm. The key generation algorithm, the interactive signing protocol, and the verification algorithm are formalized. Experimental evaluation in SageMath demonstrates more than a threefold reduction in communication overhead compared to a lattice-based counterpart.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>забывчивая подпись</kwd><kwd>постквантовая криптография</kwd><kwd>изогении эллиптических кривых</kwd><kwd>цифровая подпись</kwd><kwd>MT- GAIP</kwd><kwd>CSI-FiSh</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oblivious signature</kwd><kwd>post-quantum cryptography</kwd><kwd>isogenies of elliptic curves</kwd><kwd>digital signature</kwd><kwd>MT-GAIP</kwd><kwd>CSI-FiSh</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания (проект FSER-2025-0003).</funding-statement><funding-statement xml:lang="en">This research was funded by the State Assignment grant number FSER-2025-0003.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Khutsaeva A., Leevik A., Bezzateev S. 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