System for the secure reading and editing of data on...

Details System for the secure reading and editing of data on... System for the secure reading and editing of data on...

G - Physics

06

K

G06K 19/10 (2006.01) G06K 1/12 (2006.01) G06K 7/00 (2006.01) G06K 19/07 (2006.01) G07F 7/08 (2006.01)

Patent

CA 2286851

The invention relates to a system for the secure reading and editing of data on intelligent data carriers (4), such as chipcards, as well as to working processes executable under said system, wherein the stored data and the therewith associated authorizations or values are especially well protected against access by unauthorized persons. This is achieved by the advantageous combination of known encryption processes. In particular, the risk involved if master keys stored in independently operating terminals (2b), such as vending machines or card telephones, became known to a criminal is eliminated or at least reduced and the misuse of the nowadays increasingly used cash-reloadable chipcards is thereby counteracted.

L'invention concerne un système permettant une lecture et un traitement fiables de données sur des supports de données (4) intelligents, tels que des cartes à puces et des modes opératoires compatibles avec ce système, où les données mémorisées et les autorisations ou les valeurs qui y sont liées sont particulièrement bien protégées de l'accès de personnes non autorisées. A cet effet, on utilise une combinaison judicieuse de procédés de codage connus en soi. Ce système permet notamment d'écarter ou du moins de limiter le risque lié à l'accès illicite à des codes d'ordre supérieur mémorisés dans des terminaux (2b) travaillant en autarcie, tels que des distributeurs automatiques ou des téléphones à carte. Ce système permet ainsi de contrecarrer un usage frauduleux de cartes à puces rechargeables en argent, dont l'utilisation augmente chaque jour davantage.

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