Hacking of the AES with Boolean Functions

Michel Dubois; Eric Filiol

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Paper

Hacking of the AES with Boolean Functions

In Proceedings of the 3rd International Conference on Information Systems Security and Privacy - Volume 1: ForSE, 599-609, 2017 , Porto, Portugal

Authors: Michel Dubois and Eric Filiol

Affiliation: Operational Cryptology and Virology Laboratory, France

Keyword(s): Block Cipher, Boolean Function, Cryptanalysis, AES.

Abstract: One of the major issues of cryptography is the cryptanalysis of cipher algorithms. Some mechanisms for breaking codes include differential cryptanalysis, advanced statistics and brute-force. Recent works also attempt to use algebraic tools to reduce the cryptanalysis of a block cipher algorithm to the resolution of a system of quadratic equations describing the ciphering structure. In our study, we will also use algebraic tools but in a new way: by using Boolean functions and their properties. A Boolean function is a function from Fn 2 !F2 with n > 1. The arguments of Boolean functions are binary words of length n. Any Boolean function can be represented, uniquely, by its algebraic normal form which is an equation which only contains additions modulo 2—the XOR function—and multiplications modulo 2—the AND function. Our aim is to describe the AES algorithm as a set of Boolean functions then calculate their algebraic normal forms by using the Moebius transforms. After, we use a specifi c representation for these equations to facilitate their analysis and particularly to try a combinatorial analysis. Through this approach we obtain a new kind of equations system. (More)

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Paper citation in several formats:

Dubois, M. and Filiol, E. (2017). Hacking of the AES with Boolean Functions. In Proceedings of the 3rd International Conference on Information Systems Security and Privacy (ICISSP 2017) - ForSE; ISBN 978-989-758-209-7; ISSN 2184-4356, SciTePress, pages 599-609. DOI: 10.5220/0006091305990609

@conference{forse17,
author={Michel Dubois. and Eric Filiol.},
title={Hacking of the AES with Boolean Functions},
booktitle={Proceedings of the 3rd International Conference on Information Systems Security and Privacy (ICISSP 2017) - ForSE},
year={2017},
pages={599-609},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006091305990609},
isbn={978-989-758-209-7},
issn={2184-4356},
}

TY - CONF

JO - Proceedings of the 3rd International Conference on Information Systems Security and Privacy (ICISSP 2017) - ForSE
TI - Hacking of the AES with Boolean Functions
SN - 978-989-758-209-7
IS - 2184-4356
AU - Dubois, M.
AU - Filiol, E.
PY - 2017
SP - 599
EP - 609
DO - 10.5220/0006091305990609
PB - SciTePress