On Some Properties of Quadratic APN Functions of a Special Form
classification
💻 cs.CR
keywords
functionsformconditionsconstructionfamiliesgoodinfinitelinear
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In a recent paper, it is shown that functions of the form $L_1(x^3)+L_2(x^9)$, where $L_1$ and $L_2$ are linear, are a good source for construction of new infinite families of APN functions. In the present work we study necessary and sufficient conditions for such functions to be APN.
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