A new APN function which is not equivalent to a power mapping
Yves Edel, Gohar Kyureghyan, Alexander Pott · IEEE Transactions on Information Theory · 2006
A new almost-perfect nonlinear function (APN) on F(2/sup 10/) which is not equivalent to any of the previously known APN mappings is constructed. This is the first example of an APN mapping which is not equivalent to a power mapping.