METHOD AND SYSTEM FOR OBFUSCATING A CRYPTOGRAPHIC FUNCTION

In a system 300, a server 310 provides a cryptographic function F to an execution device in an obfuscated form. The function F composes output of a plurality of the mapping tables Ti (0=1) using an Abelian group operator . A processor 312 chooses tables O and C such that C [x] O[x]= 0, ∀x Diand crea...

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Hauptverfasser: MALLON WILLEM, GORISSEN PAUL, TRESCHER JOACHIM A, ESSER NORBERT C
Format: Patent
Sprache:eng
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Zusammenfassung:In a system 300, a server 310 provides a cryptographic function F to an execution device in an obfuscated form. The function F composes output of a plurality of the mapping tables Ti (0=1) using an Abelian group operator . A processor 312 chooses tables O and C such that C [x] O[x]= 0, ∀x Diand creates tables T'i, 0