Paper 2003/022
Did Filiol Break AES ?
Nicolas T. Courtois, Robert T. Johnson, Pascal Junod, Thomas Pornin, and Michael Scott
Abstract
On January 8th 2003, Eric Filiol published on the eprint a paper (eprint.iacr.org/2003/003/) in which he claims that AES can be broken by a very simple and very fast ciphertext-only attack. If such an attack existed, it would be the biggest discovery in code-breaking since some 10 or more years. Unfortunately the result is very hard to believe. In this paper we present the results of computer simulations done by several independent people, with independently written code. Nobody has confirmed a single anomaly in AES, even for much weaker versions of the bias claimed by the author. We also studied the source code provided by the author to realize that the first version had various issues and bugs, and the latest version still does not confirm the claimed result on AES.
Note: Filiol modified many times his claims and his results on AES. Yet, none of these have ever been confirmed by a single person other than the author. The latest source code from July 2003 does not break AES either, see Appendix B.2.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- block ciphersAESboolean functionslinear cryptanalysisciphertext-only attacksstream ciphers
- Contact author(s)
- courtois @ minrank org
- History
- 2003-07-22: last of 4 revisions
- 2003-02-05: received
- See all versions
- Short URL
- https://ia.cr/2003/022
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2003/022,
author = {Nicolas T. Courtois and Robert T. Johnson and Pascal Junod and Thomas Pornin and Michael Scott},
title = {Did Filiol Break {AES} ?},
howpublished = {Cryptology {ePrint} Archive, Paper 2003/022},
year = {2003},
url = {https://eprint.iacr.org/2003/022}
}
