Method for authenticating micro-processor cards,...

Details Method for authenticating micro-processor cards,... Method for authenticating micro-processor cards,...

2011-07-05

2011-07-05

Lee, Michael G (Department: 2876)

Registers

Systems controlled by data bearing records

Credit or identification card systems

C235S375000, C705S001100, C380S026000, C380S027000, C380S028000, C713S185000

Reexamination Certificate

active

07971785

ABSTRACT:
A method is provided for authenticating micro-processor cards to determine whether a card is a genuine card or a fake card. Authentication is performed by a checking program of at least one card reader terminal. The program sends to each card commands belonging to a standard and public set of commands. The method includes: modifying the checking program in the terminal or terminals, in such a way that the program additionally sends, to each card to be authenticated, at least one additional command, called a secret command, from a set of at least one additional command, pre-inserted into each genuine card, and different from the standard and public set of commands; and a step of detecting authenticity of the card, if the secret command is recognised and/or processed correctly, or the presence of a clone, if the secret command is not recognised and/or is processed wrongly.

REFERENCES:
patent: 5436971 (1995-07-01), Armbrust et al.
patent: 6240517 (2001-05-01), Nishioka
patent: 0427601 (1991-05-01), None
patent: 0186601 (2001-11-01), None
patent: 2005048603 (2005-05-01), None
Search Report dated Oct. 22, 2008, from French Application No. 0850888, filed on Feb. 12, 2008.

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