Paper 2020/413
Defeating State-of-the-Art White-Box Countermeasures with Advanced Gray-Box Attacks
Louis Goubin, Matthieu Rivain, and Junwei Wang
Abstract
The goal of white-box cryptography is to protect secret keys embedded in a cryptographic software deployed in an untrusted environment. In this article, we revisit state-of-the-art countermeasures employed in white-box cryptography, and we discuss possible ways to combine them. Then we analyze the different gray-box attack paths and study their performances in terms of required traces and computation time. Afterward, we propose a new paradigm for the gray-box attack against white-box cryptography, which exploits the data-dependency of the target implementation. We demonstrate that our approach provides substantial complexity improvements over the existing attacks. Finally, we showcase this new technique by breaking the three winning AES-128 white-box implementations from WhibOx 2019 white-box cryptography competition.
Note: Add acknowledgements
Metadata
- Available format(s)
-
PDF
- Category
- Implementation
- Publication info
- Published by the IACR in TCHES 2020
- Keywords
- white-box cryptographylinear maskingnon-linear maskingshufflingdata-dependency
- Contact author(s)
-
matthieu rivain @ cryptoexperts com
junwei wang @ cryptoexperts com - History
- 2020-04-15: last of 2 revisions
- 2020-04-13: received
- See all versions
- Short URL
- https://ia.cr/2020/413
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2020/413,
author = {Louis Goubin and Matthieu Rivain and Junwei Wang},
title = {Defeating State-of-the-Art White-Box Countermeasures with Advanced Gray-Box Attacks},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/413},
year = {2020},
url = {https://eprint.iacr.org/2020/413}
}
