Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate
2005-03-08
2005-03-08
Elisca, Pierre E. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Usage protection of distributed data files
Reexamination Certificate
active
06865555
ABSTRACT:
In response to a user request to view specific digital content, the user's set top box (STB) accesses a verification entity via a persistent network connection. The STB establishes the user's identity with the verification entity, for instance, by reading identity credentials from a smart card. In response to the verification entity having stored a license for the user to view the digital content, the STB receives a license key from the verification entity. In addition, the STB receives an encrypted access key from an access key source corresponding to a segment of encrypted digital content. The license key is used to decrypt the encrypted access key, which is, in turn, used to decrypt the segment of encrypted digital content. A user may transfer his or her license in whole or in part to another user by sending a transfer request to the verification entity.
REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4757534 (1988-07-01), Matyas et al.
patent: 5365589 (1994-11-01), Gutowitz
patent: 5629980 (1997-05-01), Stefik et al.
patent: 6209103 (2001-03-01), Schreiber et al.
patent: 6236971 (2001-05-01), Stefik et al.
patent: 6367019 (2002-04-01), Ansell et al.
patent: 6398245 (2002-06-01), Gruse et al.
patent: 6587837 (2003-07-01), Spagna et al.
patent: 20010011238 (2001-08-01), Eberhard et al.
patent: 001146714 (2001-10-01), None
Christensen Kory D.
Digeo, Inc.
Elisca Pierre E.
Stoel Rives LLP
LandOfFree
System and method for providing conditional access to... 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 method for providing conditional access to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for providing conditional access to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3451887