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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">10.17586/2226-1494-2023-23-6-1247-1250</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-70</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>Проблемы защиты содержимого внутренней памяти микроконтроллеров Renesas</article-title><trans-title-group xml:lang="en"><trans-title>Internal memory data protecting problems of the Renesas microcontrollers</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8889-320X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кондрашов</surname><given-names>К. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kondrashov</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кондрашов Кирилл Константинович — младший научный сотрудник</p><p>Санкт-Петербург, 197022</p></bio><bio xml:lang="en"><p>Kirill K. Kondrashov — Junior Researcher</p><p>Saint Petersburg, 197022</p></bio><email xlink:type="simple">kondrashovkk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4421-2411</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Левина</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Levina</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Левина Алла Борисовна — кандидат физико-математических наук, доцент, доцент</p><p>Санкт-Петербург, 197022</p><p>sc 56427692900</p></bio><bio xml:lang="en"><p>Alla B. Levina — PhD (Physics &amp; Mathematics), Assiciate Professor, Associate Professor</p><p>Saint Petersburg, 197022</p><p>sc 56427692900</p></bio><email xlink:type="simple">alla_levina@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический университет «ЛЭТИ» им. В.И. Ульянова (Ленина)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University “LETI”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2024</year></pub-date><volume>23</volume><issue>6</issue><fpage>1247</fpage><lpage>1250</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кондрашов К.К., Левина А.Б., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Кондрашов К.К., Левина А.Б.</copyright-holder><copyright-holder xml:lang="en">Kondrashov K.K., Levina A.B.</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/70">https://ntv.elpub.ru/jour/article/view/70</self-uri><abstract><p>Рассмотрена проблема защиты информации, содержащейся во внутренней памяти микроконтроллеров семейства Renesas RL78. Выявлена и исследована уязвимость этих микроконтроллеров, позволяющая извлекать данные из встроенной флэш-памяти с использованием программатора. Протестирован способ автоматизированного восстановления содержимого всей области памяти, в основе которого лежит специально разработанное программное обеспечение. Результаты исследования свидетельствуют о недостаточной эффективности реализованных производителем мер ограничения доступа. Описан вариант изменения управляющей команды программатора, ведущий к повышению защищенности данных. Представлена методика полного восстановления данных флэш-памяти, протестированная в программе, разработанной в среде LabVIEW.</p></abstract><trans-abstract xml:lang="en"><p>The problem of protecting the information contained in the internal memory of the Renesas RL78 Family Microcontrollers is considered. The vulnerability of these microcontrollers has been identified and in vestigated, which allows extracting data from the built-in flash memory using a programmer. A method of automated recovery of the contents of the entire memory area, based on specially developed software, has been tested. The results of the study indicate the insufficient effectiveness of the access restriction measures implemented by the manufacturer. A variant of changing the programmer’s control command, leading to an increase in data security, is described. A technique for complete recovery of flash memory data is presented, tested in a program developed in the LabVIEW environment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>информационная безопасность</kwd><kwd>микроконтроллер</kwd><kwd>Renesas RL78</kwd><kwd>флэш-память</kwd><kwd>извлечение данных</kwd></kwd-group><kwd-group xml:lang="en"><kwd>information security</kwd><kwd>MCU</kwd><kwd>Renesas RL78</kwd><kwd>flash memory</kwd><kwd>data extraction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации № 075-01024-21-02 от 29.09.2021 (проект FSEE-2021-0014).</funding-statement><funding-statement xml:lang="en">The work was supports by the Ministry of Science and Higher Education of the Russian Federation No. 075-01024-21- 02 dated 09/29/2021 (project FSEE-2021-0014).</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">Tunstall M. 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