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Title:Secondary constructions of plateaued Boolean functions through addition of indicators
Authors:ID Pašalić, Enes (Author)
ID Kudin, Sadmir (Author)
ID Hodžić, Samir (Author)
ID Khan, Dilawar Abbas (Author)
Files:.pdf RAZ_Pasalic_Enes_2026.pdf (373,64 KB)
MD5: 71A7F4F02D20376106A4BD90E6403CF8
 
URL https://ieeexplore.ieee.org/document/11483134
 
Language:English
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FAMNIT - Faculty of Mathematics, Science and Information Technologies
Abstract:Recently, the design of $s$-plateaued functions over $\F_2^n$, whose Walsh spectra take values in ${0,\pm 2^{\frac{n+s}{2}}}$, has been studied algorithmically to identify balanced plateaued functions of maximal algebraic degree, called optimal. In this article, we characterize optimal plateaued functions within the Generalized Maiorana-McFarland (GMM) class and provide sufficient conditions for them to have no nonzero linear structures. By adapting a technique of C. Carlet for modifying bent functions in the Maiorana-McFarland ($\cM$) class, we derive new classes of plateaued functions from $GMM$, including the subclass $\cD_0$ when $\phi$ is non-injective, although under more restrictive conditions. We also identify conditions ensuring plateauedness in the resulting $\cC$ class. Finally, using indicator functions of the form $1_{E_1}(x)1_{E_2}(y)$ for suitably chosen subspaces $E_1\subseteq\F_2^k$ and $E_2\subseteq\F_2^{n-k}$, we construct plateaued functions outside GMM.
Keywords:plateaued functions, linear structures, GMM class
Publication version:Author Accepted Manuscript
Publication date:17.04.2026
Year of publishing:2026
Number of pages:str. 4329-4340
Numbering:Vol. 72, no. 6
PID:20.500.12556/RUP-23520 This link opens in a new window
UDC:51
ISSN on article:0018-9448
DOI:10.1109/TIT.2026.3685098 This link opens in a new window
COBISS.SI-ID:288182787 This link opens in a new window
Publication date in RUP:19.08.2026
Views:41
Downloads:4
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Record is a part of a journal

Title:IEEE transactions on information theory
Shortened title:IEEE trans. inf. theory
Publisher:Institute of Electrical and Electronics Engineers
ISSN:0018-9448
COBISS.SI-ID:8742149 This link opens in a new window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J1-60012-2025
Name:“Linearne kode preko posebnih razredov funkcij - relacije in načrtovanje

Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0404-2019
Name:Matematično modeliranje in enkripcija: od teoretičnih konceptov do vsakodnevnih aplikacij

Secondary language

Language:Slovenian
Abstract:V zadnjem času se je načrtovanje $s$-platoednih funkcij nad $\F_2^n$, znanih tudi kot funkcije s tri-vrednostnim Walshovim spektrom (ki zavzemajo vrednosti iz množice ${0, \pm 2^{\frac{n+s}{2}}}$), obravnavalo z algoritmičnim pristopom (na primer v IEEE Transactions on Information Theory, zv. 70, št. 2, str. 1408--1421, 2024), z namenom določanja uravnoteženih platoednih funkcij z maksimalno algebraično stopnjo (imenovanih optimalne). V tem članku identificiramo te optimalne platoedne funkcije znotraj razreda posplošenih Maiorana--McFarlandovih funkcij ($\mathcal{GMM}$) ter podamo zadostne pogoje, pri katerih te funkcije nimajo neničelnih linearnih struktur. Poleg tega uporabimo tehniko, podobno tisti, ki jo je C.~Carlet uporabil za modificiranje ukrivljenih funkcij v razredu Maiorana--McFarland ($\cM$), s čimer je izpeljal tako imenovana razreda $\cC$ in $\cD$, ter dobimo nove razrede platoednih funkcij iz razreda $\mathcal{GMM}$. Vendar pa v primeru, ko je funkcija $\phi$ v definiciji $f(x,y)=x \cdot \phi(y)+\delta_0(x)$ injektivna, ne moremo izpeljati podrazreda $\cD_0$, kot je to mogoče v primeru ukrivljenih funkcij. Pokažemo, da je to še vedno mogoče, kadar $\phi$ ni injektivna, čeprav postanejo zadostni pogoji v primerjavi s primerom ukrivljenih funkcij bolj zapleteni. Poleg tega smo morali za zagotovitev platoednosti znotraj razreda $\cC$ uvesti določene pogoje na dual platoedne funkcije, kar je v primerjavi s primerom ukrivljenih funkcij zahtevnejše, saj je dual definiran na podmnožici oziroma podprostoru ambientnega prostora. Na splošno pokažemo, da je z uporabo indikatorskih funkcij oblike $1_{E_1}(x)1_{E_2}(y)$, kjer sta podprostora $E_1 \subseteq \F_2^{k}$ in $E_2 \subseteq \F_2^{n-k}$ ustrezno izbrana, mogoče modificirati funkcijo $g(x,y)=x \cdot \phi(y) \in \mathcal{GMM}{k}^n$ ob ohranjanju platoednosti, tako da je $f(x,y)=x \cdot \phi(y)+1{E_1}(x)1_{E_2}(y)$ zunaj razreda $\mathcal{GMM}_{k}^n$.
Keywords:platoedne funkcije, linearne strukture, razred GMM


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