Publikation: Post-quantum Security of Tweakable Even-Mansour, and Applications
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2024
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JOYE, Marc, Hrsg., Gregor LEANDER, Hrsg.. Advances in Cryptology - EUROCRYPT 2024 : 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Zurich, Switzerland, May 26-30, 2024, Proceedings, Part I. Cham: Springer, 2024, S. 310-338. Lecture Notes in Computer Science. 14651. ISSN 0302-9743. eISSN 1611-3349. ISBN 978-3-031-58715-3. Verfügbar unter: doi: 10.1007/978-3-031-58716-0_11
Zusammenfassung
The tweakable Even-Mansour construction yields a tweakable block cipher from a public random permutation. We prove post-quantum security of tweakable Even-Mansour when attackers have quantum access to the random permutation but only classical access to the secretly-keyed construction, the relevant setting for most real-world applications. We then use our results to prove post-quantum security—in the same model—of the symmetric-key schemes Chaskey (an ISO-standardized MAC), Elephant (an AEAD finalist of NIST’s lightweight cryptography standardization effort), and a variant of Minalpher (an AEAD second-round candidate of the CAESAR competition).
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EUROCRYPT 2024 : 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, 26. Mai 2024 - 30. Mai 2024, Zürich, Switzerland
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ALAGIC, Gorjan, Chen BAI, Jonathan KATZ, Christian MAJENZ, Patrick STRUCK, 2024. Post-quantum Security of Tweakable Even-Mansour, and Applications. EUROCRYPT 2024 : 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques. Zürich, Switzerland, 26. Mai 2024 - 30. Mai 2024. In: JOYE, Marc, Hrsg., Gregor LEANDER, Hrsg.. Advances in Cryptology - EUROCRYPT 2024 : 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Zurich, Switzerland, May 26-30, 2024, Proceedings, Part I. Cham: Springer, 2024, S. 310-338. Lecture Notes in Computer Science. 14651. ISSN 0302-9743. eISSN 1611-3349. ISBN 978-3-031-58715-3. Verfügbar unter: doi: 10.1007/978-3-031-58716-0_11BibTex
@inproceedings{Alagic2024Postq-71331,
year={2024},
doi={10.1007/978-3-031-58716-0_11},
title={Post-quantum Security of Tweakable Even-Mansour, and Applications},
number={14651},
isbn={978-3-031-58715-3},
issn={0302-9743},
publisher={Springer},
address={Cham},
series={Lecture Notes in Computer Science},
booktitle={Advances in Cryptology - EUROCRYPT 2024 : 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, Zurich, Switzerland, May 26-30, 2024, Proceedings, Part I},
pages={310--338},
editor={Joye, Marc and Leander, Gregor},
author={Alagic, Gorjan and Bai, Chen and Katz, Jonathan and Majenz, Christian and Struck, Patrick}
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<dcterms:abstract>The tweakable Even-Mansour construction yields a tweakable block cipher from a public random permutation. We prove post-quantum security of tweakable Even-Mansour when attackers have quantum access to the random permutation but only classical access to the secretly-keyed construction, the relevant setting for most real-world applications. We then use our results to prove post-quantum security—in the same model—of the symmetric-key schemes Chaskey (an ISO-standardized MAC), Elephant (an AEAD finalist of NIST’s lightweight cryptography standardization effort), and a variant of Minalpher (an AEAD second-round candidate of the CAESAR competition).</dcterms:abstract>
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