Characters, Weil sums and $c$-differential uniformity with an application to the perturbed Gold function

Pantelimon Stanica, Constanza Riera, Anton Tkachenko

Building upon the observation that the newly defined~\cite{EFRST20} concept of $c$-differential uniformity is not invariant under EA or CCZ-equivalence~\cite{SPRS20}, we showed in~…