Process and apparatus for authenticating or certifying at least one item of information contained in a memory of a removable and portable electronic carrier, such as a card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 1, 1985
Grant Date -
N/A
app pub date -
Apr 20, 1983
filing date -
May 14, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Process and device for authenticating or certifying at least one item of information contained in a memory of a portable electronic carrier, such as a credit card. To certify an item of information (I) recorded in a memory (M) of a card (C), the process consists in causing processing circuits (TC) of the card (C) to execute a program (P) which takes into account the address of the information (I) in the memory (M). The address is communicated to the card (C) externally. The execution of the program (P) leads to a result (R) which is compared with a result (R') calculated in identical fashion by a transaction apparatus (l) to which the card (C) is connected, agreement between the results establishing the authentication of the information.
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