Authentication system between a card reader and a pay card excha

Details Authentication system between a card reader and a pay card excha Authentication system between a card reader and a pay card excha

1984-07-18

1986-09-16

Cangialosi, Salvatore

Telegraphy

Systems

Printing

178 2209, H04L 900

Patent

active

046124136

ABSTRACT:
A reciprocal authentication system between two groups of electronic units which can be interconnected for the exchange of data.
The system periodically supplies a variable access key for the encrypting of confidential exchanges.

REFERENCES:
patent: 4105156 (1978-08-01), Dethloff
patent: 4198619 (1980-04-01), Atalla
patent: 4211919 (1980-07-01), Ugon
patent: 4224666 (1980-09-01), Giraud
patent: 4271482 (1981-06-01), Giraud
patent: 4304961 (1981-12-01), Campbell, Jr.
patent: 4328414 (1982-05-01), Atalla
patent: 4453074 (1984-06-01), Weinstein
patent: 4471216 (1984-09-01), Herve
patent: 4578532 (1986-03-01), Markwitz

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