2020 | OriginalPaper | Buchkapitel
Quantum Cryptanalysis on Contracting Feistel Structures and Observation on Related-Key Settings
verfasst von : Carlos Cid, Akinori Hosoyamada, Yunwen Liu, Siang Meng Sim
Erschienen in: Progress in Cryptology – INDOCRYPT 2020
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Abstract
SM4
, which is a special case where \(d=4\). Finally, in addition to quantum attacks under single-key setting, we also show related-key quantum attacks on balanced Feistel structures in the model that adversaries can only control part of the key difference in quantum superposition. Our related-key attacks on balanced Feistel structures can easily be extended to ones on contracting Feistel structures.