Leo Perrin

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Title: On reverse-engineering S-boxes with hidden design criteria or structure [slides]

Abstract: The design criteria and/or the structure of a S-Box may be secret, for instance in the case of a white-box implementation. In this talk, we discuss different methods which can be used to reverse-engineer the hidden structure of a S-Box or to at least discard with high probability that it was chosen uniformly at random. As an example, we study the S-Box of Skipjack.

Link to the reverse-engineering challenge