Method and apparatus for continuously acknowledged link encrypting
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United States of America Patent
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-
May 15, 1990
Grant Date -
N/A
app pub date -
Dec 30, 1988
filing date -
Dec 30, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An authentication system in which communication between two locations is provided by a continuous full duplex bidirectional communications highway, which highway is a secure link between the two locations. Each location transmits information to the opposite location on a bit-by-bit basis, with a previously transmitted bit of information serving as a decoding key for the most recently received bit of information and said received bit in turn serving as the encoding key for the next bit to be transmitted. An authenticated transaction record is provided upon receipt of verified transactional data, and the reception of remotely received information may be authenticated to the sender of such data.
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