Paper 2015/964
Improved Linear (hull) Cryptanalysis of Round-reduced Versions of KATAN
Danping Shi, Lei Hu, Siwei Sun, and Ling Song
Abstract
KATAN is a family of block ciphers published at CHES 2009. Based on the Mixed-integer linear programming (MILP) technique, we propose the first third-party linear cryptanalysis on KATAN. Furthermore, we evaluate the security of KATAN against the linear attack without ignoring the dependence of the input bits of the $2\times 1$ S-box(the AND operation). Note that in previous analysis, the dependence is not considered, and therefore the previous results are not accurate. Furthermore, the mounted 131/120-round attack on KATAN32/48 respectively by our 84/90-round linear hull is the best single-key known-plaintext attack. In addition, a best 94-round linear hull attack is mounted on KATAN64 by our 76-round linear hull.
Metadata
- Available format(s)
-
PDF
- Publication info
- Preprint. MINOR revision.
- Keywords
- KATANMixed-integer linear programminglinear hulldependence
- Contact author(s)
- shidanping @ iie ac cn
- History
- 2015-11-21: last of 2 revisions
- 2015-10-08: received
- See all versions
- Short URL
- https://ia.cr/2015/964
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2015/964,
author = {Danping Shi and Lei Hu and Siwei Sun and Ling Song},
title = {Improved Linear (hull) Cryptanalysis of Round-reduced Versions of {KATAN}},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/964},
year = {2015},
url = {https://eprint.iacr.org/2015/964}
}
