Method for protectedly debiting an electronic payment means

Details Method for protectedly debiting an electronic payment means Method for protectedly debiting an electronic payment means

1996-12-09

1999-11-23

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 23, 380 25, 235379, 235380, 705 16, 705 17, 705 35, 705 39, 705 41, H04L 900

Patent

active

059914122

ABSTRACT:
The invention relates to a method for protected transactions involving a so-called smart card and a terminal, such as a cash register. In order to prevent the smart card from simultaneously carrying out transactions with several terminals, the invention provides an authentication value which is used in the data exchange between the smart card and the terminal to uniquely identify subsequent steps of the transaction.

REFERENCES:
patent: 4910393 (1990-03-01), Gercekci et al.
patent: 5128997 (1992-07-01), Pailles et al.
patent: 5191193 (1993-03-01), Leroux
patent: 5495098 (1996-02-01), Pailles et al.

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