Paper 2014/648
An Equivalent Condition on the Switching Construction of Differentially $4$-uniform Permutations on $\gf_{2^{2k}}$ from the Inverse Function
Xi Chen, Yazhi Deng, Min Zhu, and Longjiang Qu
Abstract
Differentially $4$-uniform permutations on $\gf_{2^{2k}}$ with high nonlinearity are often chosen as substitution boxes in block ciphers. Recently, Qu et al. used the powerful switching method to construct permutations with low differential uniformity from the inverse function \cite{QTTL, QTLG} and proposed a sufficient but not necessary condition for these permutations to be differentially $4$-uniform. In this paper, a sufficient and necessary condition is presented. We also give a compact estimation for the number of constructed differentially $4$-uniform permutations. Comparing with those constructions in \cite{QTTL, QTLG}, the number of functions constructed here is much bigger. As an application, a new class of differentially $4$-uniform permutations is constructed. The obtained functions in this paper may provide more choices for the design of substitution boxes.
Note: International Journal of Computer Mathematics, to appear
Metadata
- Available format(s)
- Publication info
- Published elsewhere. Minor revision. International Journal of Computer Mathematics, to appear
- Keywords
- Differentially $4$-uniform permutationSubstitution box$4$-Uniform BFIPreferred Boolean functionAPN function
- Contact author(s)
- 1138470214 @ qq com
- History
- 2016-02-15: revised
- 2014-08-27: received
- See all versions
- Short URL
- https://ia.cr/2014/648
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2014/648, author = {Xi Chen and Yazhi Deng and Min Zhu and Longjiang Qu}, title = {An Equivalent Condition on the Switching Construction of Differentially $4$-uniform Permutations on $\gf_{2^{2k}}$ from the Inverse Function}, howpublished = {Cryptology {ePrint} Archive, Paper 2014/648}, year = {2014}, url = {https://eprint.iacr.org/2014/648} }