Known switching classes of APN functions over F 2 5 {\displaystyle \mathbb {F} _{2^{5}}} , F 2 6 {\displaystyle \mathbb {F} _{2^{6}}} , F 2 7 {\displaystyle \mathbb {F} _{2^{7}}} and F 2 8 {\displaystyle \mathbb {F} _{2^{8}}}
1.2 {\displaystyle 1.2}
x 5 {\displaystyle x^{5}}