Colecciones nacionales e internacionales de patentes

1. (WO2014206545) PROTECTION OF A NEAR-FIELD TRANSACTION BETWEEN A TERMINAL AND A SECURITY MODULE

Pub. No.:    WO/2014/206545    International Application No.:    PCT/EP2014/001694
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Jun 19 01:59:59 CEST 2014
IPC: H04L 29/06
H04W 12/12
Applicants: GIESECKE & DEVRIENT GMBH
Inventors: DAHMOUNI, Youssef
Title: PROTECTION OF A NEAR-FIELD TRANSACTION BETWEEN A TERMINAL AND A SECURITY MODULE
Abstract:
The invention relates to a method for protecting a transaction between a terminal (TE) and a security module (MD) which, during the transaction, communicate via the alternating field of a first contactless interface (IF). The method according to the invention is distinguished by the fact that, while the transaction is being carried out, a coupling strength (KS), which represents coupling between the terminal (TE) and the security module (MD) via the alternating field of the first interface (IF) and/or coupling between the terminal (TE) and the security module (MD) via an alternating field of a second contactless interface (IF'), is recorded at the location of the security module (MD). If the coupling strength (KS) satisfies an abort criterion with respect to the magnitude and/or the temporal variation thereof, the transaction is aborted.