Paper 2011/615
On the Joint Security of Encryption and Signature in EMV
Jean Paul Degabriele, Anja Lehmann, Kenneth G. Paterson, Nigel P. Smart, and Mario Strefler
Abstract
We provide an analysis of current and future algorithms for signature and encryption in the EMV standards in the case where a single key-pair is used for both signature and encryption. We give a theoretical attack for EMV's current RSA-based algorithms, showing how access to a partial decryption oracle can be used to forge a signature on a freely chosen message. We show how the attack might be integrated into EMV's CDA protocol flow, enabling an attacker with a wedge device to complete an offline transaction without knowing the cardholder's PIN. Finally, the elliptic curve signature and encryption algorithms that are likely to be adopted in a forthcoming version of the EMV standards are analyzed in the single key-pair setting, and shown to be secure.
Note: Correction of "1968" to "1984" in Table 1 and text.
Metadata
- Available format(s)
-
PDF
- Category
- Applications
- Publication info
- Published elsewhere. An abridged version of this work appears at CT-RSA 2012. This is the full version.
- Keywords
- EMVsignatureencryptionattack
- Contact author(s)
- kenny paterson @ rhul ac uk
- History
- 2011-12-16: last of 4 revisions
- 2011-11-15: received
- See all versions
- Short URL
- https://ia.cr/2011/615
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2011/615,
author = {Jean Paul Degabriele and Anja Lehmann and Kenneth G. Paterson and Nigel P. Smart and Mario Strefler},
title = {On the Joint Security of Encryption and Signature in {EMV}},
howpublished = {Cryptology {ePrint} Archive, Paper 2011/615},
year = {2011},
url = {https://eprint.iacr.org/2011/615}
}
