A note on the differential spectrum of the Ness-Helleseth function

Ketong Ren, Maosheng Xiong, Haode Yan

Let $n⩾3$ be an odd integer and $u$ an element in the finite field $\gf_{3^n}$. The Ness-Helleseth function is the binomial $f_u(x)=u{x}^{d_1}+x^{d_2}$ over $\gf_{3^n}$, wher…