SYSTEM AND METHOD FOR TRANSMITTING ENCRYPTED INFORMATION WITH AN ENCRYPTED KEY

THE PRESENT INVENTION RELATES TO A METHOD FOR TRANSMITTING INFORMATION BETWEEN A TRANSMITTER STATION (100E) AND A PLURALITY OF RECEIVING STATIONS (100R) WHEREIN ENCRYPTED INFORMATION IS TRANSMITTED FROM THE TRANSMITTEE STATION TO THE RECEIVER STATION WITH A FIRST KEY AND AT LEAST A CONTROL MESSAGE B...

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Bibliographische Detailangaben
Hauptverfasser:	MAILLARD MICHEL, DAUVOIS JEAN-LUC
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	THE PRESENT INVENTION RELATES TO A METHOD FOR TRANSMITTING INFORMATION BETWEEN A TRANSMITTER STATION (100E) AND A PLURALITY OF RECEIVING STATIONS (100R) WHEREIN ENCRYPTED INFORMATION IS TRANSMITTED FROM THE TRANSMITTEE STATION TO THE RECEIVER STATION WITH A FIRST KEY AND AT LEAST A CONTROL MESSAGE BEARING A SECOND KEY. ACCORDING TO THE INVENTION, THE FIRST KEY USED FOR DECRYPTION IS RESTORED IN EACH RECEIVING STATION FROM THE SECOND KEY AND FROM AT LEAST ONE DATUM SELECTED FROM A SET OF DATA AVAILABLE IN THE RECEIVING STATIONS, ACCORDING TO A SELECTION COMMAND PRIODICALLY TRANSMITTED BETWEEN THE TRANSMITTING STATION AND THE RECEIVING STATION.@ APPLICATION TO APY TELEVISION.