@inproceedings{2001504, author={Jean-Paul Degabriele and Anja Lehmann and Kenny Paterson and Nigel Smart and Mario Strefler}, title={On the Joint Security of Encryption and Signature in EMV}, booktitle={Topics in Cryptology - CT-RSA 2012}, publisher={Springer LNCS 7178}, pages={116--135}, month={February}, year={2012}, 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.}, abstract-url={http://www.cs.bris.ac.uk/Publications/pub_master.jsp?id=2001504}, keyword={Cryptography}, pubtype={102} }