Device and method to render secure the transfer of data between a videotex terminal and a server
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United States of America Patent
Stats
-
Jul 10, 1990
Grant Date -
N/A
app pub date -
Nov 10, 1988
filing date -
Nov 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The protection of the transfer of data between a videotex terminal (TVX) and a server (SE) is carried out by means of an additional package (BA) connected to a video adaptor connector (PPI) of the terminal (TVX). In a presession embodiment, the package acts on the switching device (AIG) of the terminal by monitoring any other action on said switching equipment. The switching cabinet and the server conduct dialogue according to a predetermined sequence of operations comprising the definition of a transmitted session key encrypted in accordance with a basic key. Any anomaly occuring during this dialogue aborts the presession mode.
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