Low AND Depth and Efficient Inverses: a Guide on S-boxes for Low-latency Masking

• Published in: IACR Transactions on Symmetric Cryptology Vol. 2020; no. 1
• Main Authors: Begül Bilgin, Lauren De Meyer, Sébastien Duval, Itamar Levi, François-Xavier Standaert
• Format: Journal Article
• Language: English
• Published: Ruhr-Universität Bochum 01.01.2020
• Subjects: AND depth; lightweight cryptography; masking; multiplicative complexity; S-box

In this work, we perform an extensive investigation and construct a portfolio of S-boxes suitable for secure lightweight implementations, which aligns well with the ongoing NIST Lightweight Cryptography competition. In particular, we target good functional properties on the one hand and efficient im...