Method of debiting an electronic payment means

Details Method of debiting an electronic payment means Method of debiting an electronic payment means

1999-03-01

2000-06-13

Kemper, Melanie A.

Data processing: financial, business practice, management, or co

Automated electrical financial or business practice or...

Finance

705 50, G06F 1760

Patent

active

060760737

ABSTRACT:
The invention provides a method for protectedly debiting an electronic payment mechanism, such as a telephone card. In the communication protocol between the payment mechanism and a payment station, an authentication is used to identify the payment mechanism during various steps of the protocol. According to the invention, the authentications are mutually related by states of a cryptographic process in order to be capable of detecting an interference in the protocol. The method may be applied to existing payment cards having a dynamic memory, it being guaranteed that the contents of the dynamic memory, in which there is located information related to the authentication, is not lost during the protocol.

REFERENCES:
patent: 5907832 (1999-05-01), Pieterse et al.
patent: 5914471 (1999-06-01), Van De Pavert

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