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Title:
Constructions of S-boxes with uniform sharing
Authors: Kerem Varici, Svetla Nikova, Ventzislav Nikov, Vincent Rijmen
Abstract:In this paper we focus on S-box constructions. We consider the uniformity property of an S-box which plays an important role in Threshold Implementations (TI). Most papers so far have studied TI sharings for given S-boxes. We proceed in the opposite way: starting from n-bit S-boxes with known sharings we construct new (n+1)-bit S-boxes from them with the desired sharings. In addition, we investigate the self-equivalency of S-boxes and show some interesting properties.
ePrint: https://eprint.iacr.org/2018/092
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