Paper 2024/151
Improving Linear Key Recovery Attacks using Walsh Spectrum Puncturing
, NTT (Japan), NTT (Japan)Abstract
In some linear key recovery attacks, the function which determines the value of the linear approximation from the plaintext, ciphertext and key is replaced by a similar map in order to improve the time or memory complexity at the cost of a data complexity increase. We propose a general framework for key recovery map substitution, and introduce Walsh spectrum puncturing, which consists of removing carefully-chosen coefficients from the Walsh spectrum of this map. The capabilities of this technique are illustrated by describing improved attacks on reduced-round Serpent (including the first 12-round attack on the 192-bit key variant), GIFT-128 and NOEKEON, as well as the full DES.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- A minor revision of an IACR publication in EUROCRYPT 2024
- Keywords
- CryptanalysisLinear cryptanalysisKey recoverySerpentDESGIFTNOEKEON
- Contact author(s)
-
antonio florezgutierrez @ gmail com
todo yosuke @ gmail com - History
- 2024-02-02: approved
- 2024-02-02: received
- See all versions
- Short URL
- https://ia.cr/2024/151
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/151,
author = {Antonio Flórez-Gutiérrez and Yosuke Todo},
title = {Improving Linear Key Recovery Attacks using Walsh Spectrum Puncturing},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/151},
year = {2024},
url = {https://eprint.iacr.org/2024/151}
}
