The tables below contain the Walsh spectra for all Known instances of APN functions over GF(2^8). All of these 8180 functions have one of the following three Walsh spectra:
(same as the Gold functions)
(type 1)
(type 2)
There are 12 functions with a Walsh spectrum of type 2 (given in the table below), 487 functions with a Walsh spectrum of type 1, and 7681 functions with a Gold-like Walsh spectrum (not listed below due to space limitations). Magma code listing all functions with a Gold-like Walsh spectrum, a Walsh spectrum of type 1 and a Walsh spectrum of type 2 is available.
Functions with Walsh spectrum of type 2 |
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