System and methods for transmitting encrypted data with...

Details System and methods for transmitting encrypted data with... System and methods for transmitting encrypted data with...

2002-03-22

2008-11-18

Revak, Christopher A (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S286000

Reexamination Certificate

active

07454618

ABSTRACT:
A method for transmitting information between a transmitter station and a plurality of receiving stations in which encrypted information is transmitted from the transmitter station to the receiver station with a first key and at least a control message bearing a second key. 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 periodically transmitted between the transmitting station and the receiving station. Such a system may find particular application to pay television.

REFERENCES:
patent: 6105134 (2000-08-01), Pinder et al.
patent: 6157606 (2000-12-01), Inazawa et al.
patent: 6157719 (2000-12-01), Wasilewski et al.
patent: 6246767 (2001-06-01), Akins et al.
patent: 6424717 (2002-07-01), Pinder et al.
patent: 6535607 (2003-03-01), Chandersekaran et al.
patent: 6937729 (2005-08-01), Akins et al.
patent: 6971008 (2005-11-01), Wasilewski et al.
patent: 7185205 (2007-02-01), Launchbury et al.
patent: 2001/0001014 (2001-05-01), Akins et al.
patent: 2002/0087685 (2002-07-01), Lassen et al.
patent: 2002/0108040 (2002-08-01), Eskicioglu
patent: 2003/0174844 (2003-09-01), Candelore
patent: 2004/0114764 (2004-06-01), Dauvois et al.
patent: 2004/0255130 (2004-12-01), Henry et al.
patent: 2004/0255145 (2004-12-01), Chow
patent: 2005/0152545 (2005-07-01), Desmicht et al.
patent: 0 984 629 (2000-03-01), None
patent: 99 07148 (1999-02-01), None
patent: WO 99 07148 (1999-02-01), None
patent: WO 99/07148 (1999-02-01), None
patent: WO 02/077878 (2002-10-01), None
“Functional Model of a Conditional Access System” EBU Review-Technical, European Broadcasting Union. Brussels, BE, No. 266, Dec. 21, 1995, pp. 64-77.

Affiliated with

Also associated with

Rating

System and methods for transmitting encrypted data with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and methods for transmitting encrypted data with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and methods for transmitting encrypted data with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4023381