activity
20182026
most citedA lower bound on the number of inequivalent APN functions

4 citations · 7 across the 6 of their papers we have counts for

collaborators

6 papers

cs.IT2026

On Reed-Muller subcodes, Grassmannian partitions and sum-free functions

Philipp Heering, Christian Kaspers, Vladislav Taranchuk

A function is called th-order sum-free if the sum of its values over any -dimensional affine subspace of is non-…

math.CO2026

Nonvanishing -flats of Boolean and vectorial functions

Christian Kaspers

th-order sum-free functions are a natural generalization of APN functions using the concept of (non)vanishing flats. In this paper, we introduce a new combinatorial technique to…

math.CO2020★ 1 cited

The number of almost perfect nonlinear functions grows exponentially

Christian Kaspers, Yue Zhou

Almost perfect nonlinear (APN) functions play an important role in the design of block ciphers as they offer the strongest resistance against differential cryptanalysis. Despite mo…

math.CO2020★ 4 cited

A lower bound on the number of inequivalent APN functions

Christian Kaspers, Yue Zhou

In this paper, we establish a lower bound on the total number of inequivalent APN functions on the finite field with elements, where is even. We obtain this result by…

math.CO2019

On solving isomorphism problems about 2-designs using block intersection numbers

Christian Kaspers, Alexander Pott

In this paper, we give a partial solution to a new isomorphism problem about - designs from disjoint difference families in finite fields and Galois rings. Our result…

math.CO2018★ 2 cited

Solving isomorphism problems about 2-designs from disjoint difference families

Christian Kaspers, Alexander Pott

Recently, two new constructions of disjoint difference families in Galois rings were presented by Davis, Huczynska, and Mullen and Momihara. Both were motivated by a we…