Enhancement of chip card security

G - Physics – 06 – K

Patent

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Details

G06K 19/077 (2006.01) G07F 7/10 (2006.01) G07F 7/12 (2006.01)

Patent

CA 2229215

A chip card (10), such as a financial transaction card, having first identifying data written in a read-only memory portion of circuitry contained in the card (76), wherein second and third identifying data are respectively coded in a machine readable optically variable device (e.g., a hologram) and a magnetic stripe on the card (66, 68). The authenticity of the card is verified by combining these different identifying data (11, 48); for example, the second and third identifying data may be combined (70) to produce an algorithm which is compared with the first identifying data for authentication of the card (78, 80).

L'invention porte sur une carte à puce (10), telle qu'une carte de transaction financière, dont les premières données d'identification sont inscrites dans la mémoire morte des circuits imprimés de la carte (76), et les deuxièmes et troisièmes données d'identification sont chacune codées dans un dispositif à variations optiques lisibles par machine (par exemple, un hologramme) et une bande magnétique se trouvant sur la carte (66, 68). On vérifie l'authenticité de la carte en combinant ces différentes données d'identification (11, 48). Par exemple, on peut combiner (70) les deuxièmes et troisièmes données d'identification pour produire un algorithme que l'on compare aux premières données d'identification pour authentifier la carte (78, 80).

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