Refined Method of Impossible Differentials Search with Application to Kalyna-Like Ciphers

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dc.contributor.authorTurchyn, Andrii
dc.contributor.authorYakovliev, Serhii
dc.date.accessioned2026-02-24T12:42:14Z
dc.date.available2026-02-24T12:42:14Z
dc.date.issued2025
dc.description.abstractThis work addresses the problem of evaluating the security of block ciphers against impossible dif-ferential cryptanalysis, with a particular focus on Kalyna-like ciphers. Based on formalized meth-ods —specifically the Wu-Wang method — this work introduces refined rules tailored to AES- andKalyna-like ciphers. These refinements simplify compatibility checks by replacing large systems oflinear equations with computationally efficient conditions. Experimental results have identified severalclasses of impossible differentials for three-round versions of certain Kalyna cipher variants, therebydemonstrating the security of full-round ciphers against this method of cryptanalysis
dc.format.pagerangeP. 5-13
dc.identifier.citationTurchyn, A. Refined Method of Impossible Differentials Search with Application to Kalyna-Like Ciphers / Andrii Turchyn, Serhii Yakovliev // Theoretical and Applied Cybersecurity: scientific journal. – 2025. – Vol. 7, No. 1. – P. 5-13. – Bibliogr.: 14 ref.
dc.identifier.doihttps://doi.org/10.20535/tacs.2664-29132025.1.332345
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/79020
dc.language.isoen
dc.publisherIgor Sikorsky Kyiv Polytechnic Institute
dc.publisher.placeKyiv
dc.relation.ispartofTheoretical and Applied Cybersecurity: scientific journal, Vol. 7, No. 1
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.uk
dc.subjectsymmetric cryptography
dc.subjectblock ciphers
dc.subjectimpossible differential cryptanalysis
dc.subjectWu-Wangmethod
dc.subjectAES
dc.subjectKalyna cipher
dc.subject.udc003.26:512.5
dc.titleRefined Method of Impossible Differentials Search with Application to Kalyna-Like Ciphers
dc.typeArticle

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Theoretical and Applied Cybersecurity: scientific journal, Vol. 7, No. 1