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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2019-63-6-662-671</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-810</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>ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFORMATICS</subject></subj-group></article-categories><title-group><article-title>Проблема корректности порогового метода модулярного разделения секрета с маскирующим преобразованием</article-title><trans-title-group xml:lang="en"><trans-title>Correctness problem of the threshold method of modular sharing of secrets with masking transformation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернявский</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernyavsky</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чернявский Александр Федорович – академик, д-р техн. наук, профессор, заведующий лабораторией. </p><p>ул. Курчатова, 7, 220045, Минск</p></bio><bio xml:lang="en"><p>Chernyavsky Alexander Fedorovich – Academician, D. Sc. (Engineering), Professor, Head of the Laboratory. </p><p>7, kurchatov Str., 220045, Minsk</p></bio><email xlink:type="simple">niipfp@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коляда</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolyada</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коляда Андрей Алексеевич – д-р физ.-мат. наук, доцент, гл. науч. сотрудник. </p><p>ул. Курчатова, 7, 220045, Минск</p></bio><bio xml:lang="en"><p>Kolyada Andrey Alexeyevich – D. Sc. (Physics and Mathematics), Associate professor, Chief researcher. </p><p>7, kurchatov Str., 220045, Minsk</p></bio><email xlink:type="simple">razan@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мартинов</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Martinov</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мартинов Антон Олегович – науч. сотрудник. </p><p>ул. Курчатова, 7, 220045, Минск</p></bio><bio xml:lang="en"><p>Martinov Anton Olegovich – Researcher. </p><p>7, kurchatov Str., 220045, Minsk</p></bio><email xlink:type="simple">antonmartenov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Протасеня</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Protasenya</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Протасеня Стелла Юрьевна – мл. науч. сотрудник. </p><p>ул. Курчатова, 7, 220045, Минск</p></bio><bio xml:lang="en"><p>Protasenya Stella Yuryevna – Junior researcher. </p><p>7, kurchatov Str., 220045, Minsk</p></bio><email xlink:type="simple">Estellita@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт прикладных физических проблем имени А. Н. Севченко Белорусского государственного университета</institution></aff><aff xml:lang="en"><institution>Institute of Applied Physical Problems named after A. N. Sevchenko of the Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>04</day><month>01</month><year>2020</year></pub-date><volume>63</volume><issue>6</issue><fpage>662</fpage><lpage>671</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чернявский А.Ф., Коляда А.А., Мартинов А.О., Протасеня С.Ю., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Чернявский А.Ф., Коляда А.А., Мартинов А.О., Протасеня С.Ю.</copyright-holder><copyright-holder xml:lang="en">Chernyavsky A.F., Kolyada A.A., Martinov A.O., Protasenya S.Y.</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://doklady.belnauka.by/jour/article/view/810">https://doklady.belnauka.by/jour/article/view/810</self-uri><abstract><p>Сформулированы принципы построения пороговых криптосхем разделения секрета, базирующихся на модулярном кодировании и линейной маскирующей функции с аддитивной вариационной компонентой псевдослучайного типа. Главное внимание уделено проблеме корректности схем рассматриваемого класса в рамках принятой модели. Для пороговых криптосхем модулярного разделения секрета получено необходимое и достаточное условие равноостаточности по модулю кольца принадлежности секрета-оригинала значений функции маскирования и отвечающих им элементов диапазонов, определяемых наборами оснований числом, меньшим порогового значения. На базе установленного условия разработан метод корректной реализации порогового принципа разделения секретной информации. Предложенный подход к решению исследуемой проблемы демонстрируется на конкретных числовых примерах.</p></abstract><trans-abstract xml:lang="en"><p>The article formulates the principles of constructing threshold cryptographic schemes for secret sharing based on a modular coding and a linear masking function with an additive variational component of pseudo-random type. The main attention is paid to the correctness problem of schemes of the considered class within the limits of the accepted model. The congruent condition in the module of the secret-original ring of the masking function values in full and partial modular number systems is obtained. On the basis of the above-said, the method of correct implementation of the threshold principle of secret information sharing is developed. The proposed approach to solving the problem under study is demonstrated by specific numerical examples.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>модулярное разделение секрета</kwd><kwd>пороговая схема разделения секрета</kwd><kwd>модулярная система счисления</kwd><kwd>маскирующая функция</kwd><kwd>проблема корректности порогового метода</kwd><kwd>критичные значения псевдослучайного параметра</kwd></kwd-group><kwd-group xml:lang="en"><kwd>modular secret sharing</kwd><kwd>threshold secret sharing scheme</kwd><kwd>modular number system</kwd><kwd>masking function</kwd><kwd>problem of the correctness of the threshold method</kwd><kwd>critical values of a pseudo-random parameter</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Криптология / Ю. С. Харин [и др.]. – Минск: БГУ, 2013. – 512 с.</mixed-citation><mixed-citation xml:lang="en">Kharin Yu. S., Agievich S. 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