Process for authentication of smart cards, and device for use of

Details Process for authentication of smart cards, and device for use of Process for authentication of smart cards, and device for use of

1993-09-27

1996-10-08

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

380 20, H04N 7167

Patent

active

055639488

ABSTRACT:
The device of the invention for a pay-television system comprises an emitter and several receivers using "smart cards". In addition to the unscrambling control signals, the emitter sends encrypted authentication messages to which a correct response can be given only by the receivers where valid cards are used.

REFERENCES:
patent: 4599647 (1986-07-01), George et al.
patent: 4751732 (1988-06-01), Kamitake
patent: 4935962 (1990-06-01), Austin
patent: 4968873 (1990-11-01), Dethloff et al.
patent: 4985920 (1991-01-01), Seki

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