Paper 2015/711
Construction of Lightweight S-Boxes using Feistel and MISTY structures (Full Version)
Anne Canteaut, Sébastien Duval, and Gaëtan Leurent
Abstract
The aim of this work is to find large S-Boxes, typically operating on 8 bits, having both good cryptographic properties and a low implementation cost. Such S-Boxes are suitable building-blocks in many lightweight block ciphers since they may achieve a better security level than designs based directly on smaller S-Boxes. We focus on S-Boxes corresponding to three rounds of a balanced Feistel and of a balanced MISTY structure, and generalize the recent results by Li and Wang on the best differential uniformity and linearity offered by such a construction. Most notably, we prove that Feistel networks supersede MISTY networks for the construction of 8-bit permutations. Based on these results, we also provide a particular instantiation of an 8-bit permutation with better properties than the S-Boxes used in several ciphers, including Robin, Fantomas or CRYPTON.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Major revision. SAC 2015
- Keywords
- S-BoxFeistel networkMISTY networkLightweight block-cipher
- Contact author(s)
- gaetan leurent @ inria fr
- History
- 2015-07-18: received
- Short URL
- https://ia.cr/2015/711
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2015/711,
author = {Anne Canteaut and Sébastien Duval and Gaëtan Leurent},
title = {Construction of Lightweight S-Boxes using Feistel and {MISTY} structures (Full Version)},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/711},
year = {2015},
url = {https://eprint.iacr.org/2015/711}
}
