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Дата последнего поиска статьи во внешних источниках: 19 мая 2021 г.
Аннотация:A new equivalence relation on the set of Boolean functions is introduced: functions are declared to be 𝛥-equivalent if their autocorrelation functions are equal. It turns out that this classification agrees well with the cryptographic properties of Boolean functions: for functions belonging to the same 𝛥-equivalence class a number of their cryptographic characteristics do coincide. For example, all bent-functions (of a fixed number of variables) make up one class.