Security method and device for communicating confidential data via an intermediate stage
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United States of America Patent
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-
Feb 5, 1985
Grant Date -
N/A
app pub date -
Aug 12, 1982
filing date -
Jan 7, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method and devices allowing exchange of data between authorized bearers of crediting means (1) to be identified, approved and possibly coded and to remote centralized processing machines (3) via specific terminal units (2). The data produced by a bearer of a crediting means (1) after connection of said means (1) to a terminal unit (2) and sending of the identity of said means (1) are approved by a logic generation unit (15) of the means (1) from an individualization code and from transaction data. The invention applies to the exchange of data in an insecure environment and more particularly to bank credit card systems.
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