Paper 2019/329
Doubly half-injective PRGs for incompressible white-box cryptography
Estuardo Alpirez Bock, Alessandro Amadori, Joppe W. Bos, Chris Brzuska, and Wil Michiels
Abstract
White-box cryptography was originally introduced in the setting of digital rights management with the goal of preventing a user from illegally re-distributing their software decryption program. In recent years, mobile payment has become a popular new application for white-box cryptography. Here, white-box cryptography is used to increase the robustness against external adversaries (i.e., not the user) who aim to misuse/attack the cryptographic functionalities of the payment application. A necessary requirement for secure white-box cryptography is that an adversary cannot extract the embedded secret key from the implementation. However, a white-box implementation needs to fulfill further security properties in order to provide useful protection of an application. In this paper we focus on the popular property incompressibility that is a mitigation technique against code-lifting attacks. We provide an incompressible white-box encryption scheme based on the standard-assumption of one-way permutations whereas previous works used either public-key type assumptions or non-standard symmetric-type assumptions.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Minor revision. CT-RSA 2019
- DOI
- 10.1007/978-3-030-12612-4_10
- Keywords
- White-box cryptographyIncompressibilityOne-way permutations
- Contact author(s)
-
estuardo alpirezbock @ gmail com
chris brzuska @ aalto fi - History
- 2019-03-29: received
- Short URL
- https://ia.cr/2019/329
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/329,
author = {Estuardo Alpirez Bock and Alessandro Amadori and Joppe W. Bos and Chris Brzuska and Wil Michiels},
title = {Doubly half-injective {PRGs} for incompressible white-box cryptography},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/329},
year = {2019},
doi = {10.1007/978-3-030-12612-4_10},
url = {https://eprint.iacr.org/2019/329}
}