04656342 is referenced by 54 patents and cites 16 patents.

The invention relates to a method and an apparatus for authorizing the holder of a portable object such as a card to gain access with this card to at least one service provided by at least one authorizing entity. According to the invention, the method enables the holder of a card C to become authorized to have access to a particular service by causing an authorizing datum to be written on his card C by an authorizing system T, causing the calculation by both the card C and the system of a result taking into account at least one secret datum S, comparing in a comparator CC of the card the results calculated, and validating the authorizing datum if the results are identical.

Title
Method and apparatus for authorizing the holder of a portable object such as a card to gain access to at least one service provided by at least one authorizing entity
Application Number
572080
Publication Number
4656342
Application Date
January 21, 1986
Publication Date
April 7, 1987
Inventor
Michel Ugon
Maurepas
FR
Agent
Kerkam Stowell Kondracki & Clarke
Assignee
Cii Honeywell Bull
FR
IPC
G06F 15/30
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