Paper 2013/301
Impossible Differential-Linear Cryptanalysis of Reduced-Round CLEFIA-128
Zheng Yuan, Xian Li, and Bart Preneel
Abstract
CLEFIA is a 128-bit block cipher proposed by Sony Corporation in 2007. Our paper introduces a new chosen text attack, the impossible differential-linear attack, on iterated cryptosystems. The attack is efficient for $16$-round CLEFIA with whitening keys. In the paper, we construct a $13$-round impossible differential-linear distinguisher. Based on the distinguisher, we present an effective attack on 16-round CLEFIA-$128$ with data complexity of $2^{122.73}$, recovering $96$-bit subkeys in total. Our attack can also be applied to CLEFIA-192 and CLEFIA-$256$.
Note: We complement the third chapter, that is say, we introduced in detail our attack thoughts.
Metadata
- Available format(s)
-
PDF
- Publication info
- Preprint. MINOR revision.
- Keywords
- CLEFIAimpossible differential cryptanalysislinear approximation.
- Contact author(s)
- zyuan @ tsinghua edu cn
- History
- 2020-10-08: last of 6 revisions
- 2013-05-25: received
- See all versions
- Short URL
- https://ia.cr/2013/301
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2013/301,
author = {Zheng Yuan and Xian Li and Bart Preneel},
title = {Impossible Differential-Linear Cryptanalysis of Reduced-Round {CLEFIA}-128},
howpublished = {Cryptology {ePrint} Archive, Paper 2013/301},
year = {2013},
url = {https://eprint.iacr.org/2013/301}
}
