Improved Quantum Linear Attacks and Application to CAST

This paper studies quantum linear key-recovery attacks on block ciphers. The first such attacks were last-rounds attacks proposed by Kaplan et al. (ToSC 2016), which combine a linear distinguisher with a guess of a partial key. However, the most efficient classical attacks use the framework propose...

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Bibliographic Details
Main Authors: Kaveh Bashiri, Xavier Bonnetain, Akinori Hosoyamada, Nathalie Lang, André Schrottenloher
Format: Article
Language:English
Published: Ruhr-Universität Bochum 2025-06-01
Series:IACR Transactions on Symmetric Cryptology
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Online Access:https://ojs.ub.rub.de/index.php/ToSC/article/view/12246
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