Application of the differential cryptanalysis to the KB-256 algorithm

Application of the differential cryptanalysis to the KB-256 algorithm | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Application of the differential cryptanalysis to the KB-256 algorithm Alexey Kurochkin, Andrey Chuhno, Dmitry Bobrovskiy, Alexey Polubelov This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7789097/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 11 You are reading this latest preprint version Abstract In this paper, we construct the difference for the KB-256 encryption algorithm. The proposed difference for 15 rounds of the algorithm holds with a probability of at least 2 -133.3 . The obtained relation enables the effective application of differential cryptanalysis. difference impossible differentials Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 19 Dec, 2025 Reviews received at journal 11 Dec, 2025 Reviews received at journal 07 Dec, 2025 Reviews received at journal 29 Nov, 2025 Reviewers agreed at journal 28 Oct, 2025 Reviewers agreed at journal 24 Oct, 2025 Reviewers agreed at journal 23 Oct, 2025 Reviewers invited by journal 21 Oct, 2025 Editor assigned by journal 07 Oct, 2025 Submission checks completed at journal 07 Oct, 2025 First submitted to journal 06 Oct, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7789097","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":536332663,"identity":"211d9ddf-980a-4104-b799-53674de6d3bc","order_by":0,"name":"Alexey Kurochkin","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABCUlEQVRIiWNgGAWjYBACCRDB2JDAA+Z9YDgAppnBgsRoYZwB0sJGpBaI4TzEaJGckfvwwc8daTLmDMzPpG133EmcP7/54OcCBhvZDQewa5GWSDc27D2Tw2PZwGYmnXvmWeKGY2zJ0jMY0oxxaZGTSGOTZmyr4DE4wGBsnNt2OHEDG48Z0IVABmEt7J+NLYFa5rfxfwNq+Y9TizRESw5QC4/hY0agloZjPGygcMCpRbLnGbNhb1saj8FhnsKHvWcOG284lmYszWOQbDwThxaJ42mMD362JdsbHG/fcODnjsOy85sPP/zMU2En24dDCwJA48KxAcwzIKQcBoBa7IlVOwpGwSgYBSMHAAACaFzCWEqhRwAAAABJRU5ErkJggg==","orcid":"","institution":"Moscow Institute of Physics and Technology","correspondingAuthor":true,"prefix":"","firstName":"Alexey","middleName":"","lastName":"Kurochkin","suffix":""},{"id":536332664,"identity":"8c7a73d8-9d51-4ed2-8b93-eee070bc0ed0","order_by":1,"name":"Andrey Chuhno","email":"","orcid":"","institution":"National Research University Higher School of Economics","correspondingAuthor":false,"prefix":"","firstName":"Andrey","middleName":"","lastName":"Chuhno","suffix":""},{"id":536332665,"identity":"1dc5b663-2fe8-4a00-9a43-45bcbe2f9bc8","order_by":2,"name":"Dmitry Bobrovskiy","email":"","orcid":"","institution":"Financial University","correspondingAuthor":false,"prefix":"","firstName":"Dmitry","middleName":"","lastName":"Bobrovskiy","suffix":""},{"id":536332666,"identity":"cde74053-e69f-4331-bd04-fdec3206ea39","order_by":3,"name":"Alexey Polubelov","email":"","orcid":"","institution":"Sberbank of Russia","correspondingAuthor":false,"prefix":"","firstName":"Alexey","middleName":"","lastName":"Polubelov","suffix":""}],"badges":[],"createdAt":"2025-10-06 07:53:29","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7789097/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7789097/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":94849135,"identity":"1bf933fe-987a-42b6-b302-aaa81480f57e","added_by":"auto","created_at":"2025-10-31 10:42:07","extension":"json","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":4379,"visible":true,"origin":"","legend":"","description":"","filename":"5fa3b1d4b7924eaeba4aaec9dcd01dd4.json","url":"https://assets-eu.researchsquare.com/files/rs-7789097/v1/6fe2a50bc68560d5e4af661a.json"},{"id":94986277,"identity":"4218c98c-df79-4e4e-8138-a3238350203a","added_by":"auto","created_at":"2025-11-03 07:00:09","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":301274,"visible":true,"origin":"","legend":"","description":"","filename":"blindarticle.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7789097/v1_covered_f95fbf3b-0736-4ded-893b-3d9d55665635.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Application of the differential cryptanalysis to the KB-256 algorithm","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"journal-of-computer-virology-and-hacking-techniques","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"jicv","sideBox":"Learn more about [Journal of Computer Virology and Hacking Techniques](http://link.springer.com/journal/11416)","snPcode":"11416","submissionUrl":"https://submission.springernature.com/new-submission/11416/3","title":"Journal of Computer Virology and Hacking Techniques","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"difference, impossible differentials","lastPublishedDoi":"10.21203/rs.3.rs-7789097/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7789097/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn this paper, we construct the difference for the KB-256 encryption algorithm. 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