Charpin, Pascale

Crooked permutations were defined twenty years ago. It was firstly shown that they can be used to construct interesting objects in graph theory. The field of applications was extended later, since crooked functions, bijective or not, correspond to APN functions and to some optimal codes. We adopt an unified presentation, of crooked functions, expla...

Rychkov, K. L.
Published in
Journal of Applied and Industrial Mathematics

We prove that, for n equal to 3, 5, and a power of 2, every minimal partition of the edge set of the n-dimensional cube is perfect. As a consequence, we obtain some description of the classes of all minimal parallel-serial contact schemes (π-schemes) realizing the linear Boolean functions that depend essentially on n variables for the corresponding...

Voronenko, A. A. Karchmit, I. A.
Published in
Moscow University Computational Mathematics and Cybernetics

New upper bound 3n is presented for the cardinality of the definition domain of a universal function for a class of linear Boolean functions in which n is the number of variables.

Yashunsky, A. D.
Published in
Lobachevskii Journal of Mathematics

We consider Bernoulli distribution algebras, i.e. sets of distributions that are closed under transformations achieved by substituting independent random variables for arguments of Boolean functions from a given system. We establish that, unless the transforming set contains only essentially unary functions, the set of algebra limit points is eithe...

Chukhrov, I. P.
Published in
Journal of Applied and Industrial Mathematics

The problem of minimizing Boolean functions for additive complexity measures in a geometric interpretation, as covering a subset of vertices in the unit cube by faces, is a special type of a combinatorial statement of the weighted problem of a minimal covering of a set. Its specificity is determined by the family of covering subsets, the faces of t...

Kurbatskaia, V. K.
Published in
Moscow University Computational Mathematics and Cybernetics

Estimates are obtained for the Shannon function of the length of a diagnostic test with respect to cyclic shifts of scheme inputs, and for the Shannon function of fault detection and length of a diagnostic test with respect to a single stuck-at fault and a cyclic shift of scheme inputs.

Logachev, Oleg A. Fedorov, Sergey N. Yashchenko, Valerii V.
Published in
Discrete Mathematics and Applications

A new approach to the study of algebraic, combinatorial, and cryptographic properties of Boolean functions is proposed. New relations between functions have been revealed by consideration of an injective mapping of the set of Boolean functions onto the sphere in a Euclidean space. Moreover, under this mapping some classes of functions have extremel...

Liu, Zhuojun Wu, Baofeng
Published in
Journal of Systems Science and Complexity

Boolean functions with optimal algebraic immunity (OAI functions) are important cryptographic primitives in the design of stream ciphers. During the past decade, a lot of work has been done on constructing such functions, among which mathematics, especially finite fields, play an important role. Notably, the approach based on decompositions of addi...

Boura, Christina Canteaut, Anne Jean, Jérémy Suder, Valentin
Published in
Designs, Codes and Cryptography

In this work, we discuss two notions of differential equivalence on Sboxes. First, we introduce the notion of DDT-equivalence which applies to vectorial Boolean functions that share the same difference distribution table (DDT). Next, we compare this notion to what we call the γ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} ...

Filmus, Yuval Ihringer, Ferdinand