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Paper 2006/468

White Box Cryptography: Another Attempt

Julien Bringer and Herve Chabanne and Emmanuelle Dottax

Abstract

At CMS 2006 Bringer et al. show how to conceal the algebraic structure of a ``traceable block cipher'' by adding perturbations to its description. We here exploit and strengthen their ideas by further perturbing the representation of a cipher towards a white box implementation. Our technique is quite general, and we apply it -- as a challenging example in the domain of white box cryptography -- to a variant of the block cipher AES.

Note: Our previous attempt has been published on the eprint the 11th of December, 2006. Jean-Sebastien Coron pointed out an attack of this previous version to us in [8].

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Published elsewhere. Unknown where it was published
Keywords
white box cryptographyobfuscationperturbationsAES
Contact author(s)
julien bringer @ sagem com
History
2006-12-20: last of 2 revisions
2006-12-11: received
See all versions
Short URL
https://ia.cr/2006/468
License
Creative Commons Attribution
CC BY
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