Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2005-01-04
2005-01-04
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S182000, C713S185000, C713S193000, C713S152000, C713S152000
Reexamination Certificate
active
06839840
ABSTRACT:
The invention concerns a method enabling a smart card and a terminal whereto it is connected to authenticate each other. The invention is characterized in that at the end of each transaction the terminal calculates, from data representing the card at said transaction end, a secret code CSC2which is recorded in a zone ZCSC with unprotected access in the card memory and an authentication certificate CA2which is recorded in a zone ZCA with protected access of the memory by presenting a secret code CSC2. At the next transaction, the terminal calculates, by means of data contained in the card, a secret code and an authentication certificate which are compared to those previously recorded to perform authentication. The invention is applicable to smart cards.
REFERENCES:
patent: 0216298 (1987-04-01), None
patent: 0423035 (1991-04-01), None
patent: 2600188 (1987-12-01), None
patent: 2685520 (1993-06-01), None
patent: WO9624913 (1996-08-01), None
Burns Doane Swecker & Mathis L.L.P.
Gemplus
Peeso Thomas R.
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