Distributed Computation of SBoxes with Strong Security Properties

Provided by: Science & Engineering Research Support soCiety (SERSC)
Topic: Security
Format: PDF
Substitutions boxes are among the most critical components of a secure block cipher design. A substitution box or, for short, SBox, is a set of Boolean functions implementing a non-linear mapping of inputs to outputs and it is employed for mixing the input of the cipher with the encryption key so that the output of the cipher reveals no information about the encryption key. Over the years, a number of good practices have evolved that, if employed, can lead to the construction of SBoxes with good security properties that lead to the cipher's resistance against known and envisaged cryptanalysis technique.

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