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Title:
A direct proof of APN-ness of the Kasami functions
Authors: Claude Carlet, Kwang Ho Kim, Sihem Mesnager
Abstract:Using recent results on solving the equation X^{2^k+1}+X+a=0 over a finite field \GF{2^n}, we address an open question raised by the first author in WAIFI 2014 concerning the APN-ness of the Kasami functions x\mapsto x^{2^{2k}-2^k+1} with gcd(k,n)=1, x\in\GF{2^n}
ePrint: https://eprint.iacr.org/2020/100
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