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SCN
2008
Springer

Using Normal Bases for Compact Hardware Implementations of the AES S-Box

13 years 3 months ago
Using Normal Bases for Compact Hardware Implementations of the AES S-Box
Abstract. The substitution box (S-box) of the Advanced Encryption Standard (AES) is based on the multiplicative inversion s(x) = x-1 in GF(256) and followed by an affine transformation in GF(2). The S-box is the most expansive building block of any hardware implementation of the AES, and the multiplicative inversion is the most costly step of the S-box transformation. There exist many publications about hardware implementations of the S-box and the smallest known implementations are based on normal bases. In this paper, we introduce a new method to implement the multiplicative inversion over GF(256) based on normal bases that have not been considered before in the context of AES implementations.
Svetla Nikova, Vincent Rijmen, Martin Schläff
Added 14 Dec 2010
Updated 14 Dec 2010
Type Journal
Year 2008
Where SCN
Authors Svetla Nikova, Vincent Rijmen, Martin Schläffer
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