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Original Articles

New secondary constructions of differentially 4-uniform permutations over

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Pages 1670-1693 | Received 21 Jun 2015, Accepted 04 Jul 2016, Published online: 07 Sep 2016
 

ABSTRACT

In this paper, we generalize the switching method and present a method to construct new differentially 4-uniform permutations from two known ones by determining the corresponding cycle sets. As for applications, by determining all the cycle sets of (x+1)1+1 and (x+1)1+ω related to the inverse functions, respectively, we present two efficient constructions of differentially 4-uniform permutations. Moreover, it has been checked by the Magma software for small n that, both constructions give many new Carlet–Charpin–Zinoviev (CCZ)-inequivalent classes of functions that are not CCZ-equivalent to the known functions.

2010 AMS SUBJECT CLASSIFICATIONS:

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was partly supported by the National Natural Science Foundation of China under Grants [61202471] and [61572189], and partly supported by Shanghai Key Laboratory of Intelligent Information Processing under Grant [IIPL-2014-005].

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