FWF Project P 31762

Runtime: 01.01.2019-31.08.2022

- László Mérai (project leader)
- Vishnupriya Anupindi

During the last century, number theoretical problems arose in many applications, such as cryptography,
communication systems or numerical methods. For example, number theory plays a central role for public
key encryption as well as for their security analysis, for symmetric key encryption (for example design
of stream ciphers or block ciphers), for wireless communications (for example code division multiple
access) or for quasi Monte Carlo methods.

This project is devoted to the study of pseudorandom number generators, applications of elliptic curves,
and highly nonlinear Boolean and vectorial Boolean functions.

We use a collection of different methods from number theory and their combinations including

- exponential and character sum techniques
- arithmetic over finite fields and residue rings
- elliptic curves over finite fields
- methods from algebraic geometry

The preprints of all publications are avaible via arXiv.org: https://arxiv.org/search/?searchtype=author&query=Mérai,+L.

Peer Reviewed Journal Publication

- Dartyge, C.; Merai, L.; Winterhof, A. (2021) On the distribution of the Rudin-Shapiro function for finite fields. Proceedings of the American Mathematical Society, Bd. to appear, S. 1-14.
- Mérai, L.; Shparlinski, I.E. . (2021) On the dynamical system generated by the Möbius transformation at prime times. Research in Mathematical Sciences, Bd. to appear, S. 1-10.
- Mérai, L.; Ostafe, A.; Shparlinski, I.E. (2020) Dynamical irreducibility of polynomials in reduction modulo primes. Mathematische Zeitschrift, Bd. to appear, S. 15.
- Merai, L. (2020) Values of rational functions in small subgroups of finite fields and the identity testing problem from powers. Int. J. Number Theory, Bd. 16 (2), S. 219-–231.
- Gómez-Pérez, D.; Mérai, L. (2020) Algebraic dependence in generating functions and expansion complexity. Adv. Math. Commun., Bd. 14 (2), S. 307-–318.
- L. Mérai, I. E. Shparlinski (2020) Distribution of short subsequences of inversive congruential pseudorandom number generator. Math. Comp. Math. Comp., Bd. 89 (322), S. 911--922.
- L. Merai, I.E. Shparlinski (2020) Unlikely intersections over finite fields: polynomial orbits in small subgroups. Discrete Contin. Dyn. Syst., Bd. 40 (2), S. 1065--1073.

Workingpaper

- Merai, L.; Winterhof, A. (2021) Pseudorandom sequences derived from automatic sequences.
- Anbar, N.; Kalaycı, T.; Meidl, W.; Mérai, L. (2020) On functions with the maximal number of bent components.
- Barroero, F.; Capuano, L.; Mérai, L.; Ostafe, A.; Sha, M. (2020) Multiplicative and linear dependence in finite fields and on elliptic curves modulo primesFabrizio Barroero, Laura Capuano, László Mérai, Alina Ostafe, Min Sha.
- B. Kerr, L. Mérai, I. E. Shparlinski (2020) On digits of Mersenne numbers.