Quantum cryptanalysis of ciphers based on generalized Feistel and Lai-Massey schemes

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dc.contributor.authorFesenko, Andrii
dc.date.accessioned2026-03-02T13:32:09Z
dc.date.available2026-03-02T13:32:09Z
dc.date.issued2025
dc.description.abstractThis paper investigates generalizations of the Lai-Massey scheme, including unified constructionscombining it with the Feistel scheme (MD GLM, UFLM, L-Feistel, and quasi-Feistel). New reductionsto the quasi-Feistel scheme are provided. Known efficient quantum attacks are analyzed, includingchosen-plaintext attacks on 3 rounds and chosen-ciphertext attacks on 4 rounds for a special case of thequasi-Feistel cipher using Simon’s algorithm. It is demonstrated that restrictions in that work led to thedegeneration of the quasi-Feistel scheme into the standard Feistel scheme, replicating known quantumattacks on the Feistel scheme. New two-round distinguishing attacks are presented for the L-Feistel andMD-1 GLM schemes, enabling round key recovery
dc.format.pagerangeP. 60-66
dc.identifier.citationFesenko, A. Quantum cryptanalysis of ciphers based on generalized Feistel and Lai-Massey schemes / Andrii Fesenko // Theoretical and Applied Cybersecurity: scientific journal. – 2025. – Vol. 7, No. 3. – P. 60-66. – Bibliogr.: 11 ref.
dc.identifier.doihttps://doi.org/10.20535/tacs.2664-29132025.3.347525
dc.identifier.orcid0000-0002-4489-3256
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/79154
dc.language.isoen
dc.publisherIgor Sikorsky Kyiv Polytechnic Institute
dc.publisher.placeKyiv
dc.relation.ispartofTheoretical and Applied Cybersecurity: scientific journal, Vol. 7, No. 3
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.uk
dc.subjectLa-Massey scheme
dc.subjectquasi-Feistel cipher
dc.subjectL-Feistel scheme
dc.subjectquantum cryptanalysis
dc.subject.udc004.056.55
dc.titleQuantum cryptanalysis of ciphers based on generalized Feistel and Lai-Massey schemes
dc.typeArticle

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Theoretical and Applied Cybersecurity: scientific journal, Vol. 7, No. 3