Matthias Johann Steiner

collaborators

3 papers

math.AG2025

A Degree Bound for the c-Boomerang Uniformity

Matthias Johann Steiner

Let $F_{q}$ be a finite field, and let $F \in F_{q} [X]$ be a polynomial with $d = deg (F)$ such that $g cd (d, q) = 1$ . In this pape…

math.NT2025

A Note on the Walsh Spectrum of Power Residue S-Boxes

Matthias Johann Steiner

Let $F_{q}$ be a prime field with $q \geq 3$ , and let $d, m \geq 1$ be integers such that $g cd (d, q) = 1$ and $m ∣ (q - 1)$ . In this paper we bound the abs…

cs.CR2024

Gröbner Basis Cryptanalysis of Ciminion and Hydra

Matthias Johann Steiner

Ciminion and Hydra are two recently introduced symmetric key Pseudo-Random Functions for Multi-Party Computation applications. For efficiency, both primitives utilize quadratic per…