A new APN function which is not equivalent to a power mapping

Y. Edel, G. Kyureghyan, A. Pott
2006 IEEE Transactions on Information Theory  
A new almost perfect nonlinear function (APN) on the finite field GF(2^10) 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.
doi:10.1109/tit.2005.862128 fatcat:pegoo7xplza25hc52voywezfim