Secure and Efficient Masking of AES - A Mission Impossible?

Elisabeth Oswald; Stefan Mangard; Norbert Pramstaller

Paper 2004/134

Secure and Efficient Masking of AES - A Mission Impossible?

Elisabeth Oswald, Stefan Mangard, and Norbert Pramstaller

Abstract

This document discusses masking approaches with a special focus on the AES S-box. Firstly, we discuss previously presented masking schemes with respect to their security and implementation. We conclude that algorithmic countermeasures to secure the AES algorithm against side-channel attacks have not been resistant against all first-order side-channel attacks. Secondly, we introduce a new masking countermeasure which is not only secure against first-order side-channel attacks, but which also leads to relatively small implementations compared to other masking schemes when implemented in dedicated hardware.

Metadata

Available format(s): PDF
Category: Implementation
Publication info: Published elsewhere. Unknown where it was published
Keywords: AES implementation side channel attacks
Contact author(s): Elisabeth Oswald @ iaik tugraz at
History: 2004-06-04: received
Short URL: https://ia.cr/2004/134
License: CC BY

BibTeX

@misc{cryptoeprint:2004/134,
      author = {Elisabeth Oswald and Stefan Mangard and Norbert Pramstaller},
      title = {Secure and Efficient Masking of {AES} - A Mission Impossible?},
      howpublished = {Cryptology {ePrint} Archive, Paper 2004/134},
      year = {2004},
      url = {https://eprint.iacr.org/2004/134}
}