G - Physics – 07 – F
Patent
G - Physics
07
F
G07F 7/10 (2006.01) G06F 1/00 (2006.01) G06F 12/14 (2006.01) G06K 19/073 (2006.01)
Patent
CA 2332350
The invention relates to a data storage medium (1) comprising a semiconductor chip (5). To prevent an unauthorized person from obtaining secret chip (5) data by listening to signaling patterns of said chip (5), security-relevant operations are executed only on the basis of commands or command sequences of the operating program whose use does not make it possible to deduce the data being processed from the signaling patterns of the chip.
L'invention concerne un support de données (1) comportant une puce de semi-conducteur (5). Pour empêcher qu'un fraudeur découvre des données secrètes de la puce (5) après avoir écouté des variations de signal de ladite puce (5), des opérations soumises à des règles de sécurité ne sont exécutées qu'avec des commandes ou des séquences de commandes du programme d'exploitation, dont l'utilisation ne permet pas de déduire les données traitées à partir des variations de signal.
Drexler Hermann
Johnson Eric
Vater Harald
Giesecke & Devrient Gmbh
Ridout & Maybee Llp
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