Paper 2022/1158 Original: eprint.iacr.org/2022/1158 ↗
Differential Cryptanalysis of K-Cipher
Abstract
K-Cipher is an ultra-low latency block cipher with variable-length parameters designed by Intel Labs. In this work, we analyze the security of K-Cipher and propose a differential cryptanalysis attack with the complexity of $2^{29.7}$ for a variant of K-Cipher with state size $n=24$ bits state and block size $m=8$ bits. Our attack recovers the secret key and secret randomizer values with a total length of 240 bits in $\sim 30$ minutes on a standard desktop machine. We show that it is possible to extend the same attack for an arbitrary set of parameters.
Metadata
- Available format(s)
PDF- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- History
- 2022-09-06: last updated
- 2022-09-06: published
- Short URL
- https://ia.cr/2022/1158
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2022/1158,
author = {Mohammad Mahzoun and Liliya Kraleva and Raluca Posteuca and Tomer Ashur},
title = {Differential Cryptanalysis of K-Cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2022/1158},
year = {2022},
url = {https://eprint.iacr.org/2022/1158}
}