Paper 2022/1097 Original: eprint.iacr.org/2022/1097 ↗
Post-Quantum Security of Tweakable Even-Mansour, and Applications
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).
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2024-02-29: last updated
- 2022-08-24: published
- Short URL
- https://ia.cr/2022/1097
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/1097,
author = {Gorjan Alagic and Chen Bai and Jonathan Katz and Christian Majenz and Patrick Struck},
title = {Post-Quantum Security of Tweakable Even-Mansour, and Applications},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/1097},
year = {2022},
url = {https://eprint.iacr.org/2022/1097}
}