The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2014
Filed:
Apr. 18, 2002
Eric M. Foster, Owego, NY (US);
Jeffrey B. Lotspiech, San Jose, CA (US);
Dalit Naor, Tel-Aviv, IL;
Sigfredo I. Nin, Morgan Hill, CA (US);
Florian Pestoni, Mountain View, CA (US);
Wilfred E. Plouffe, Jr., San Jose, CA (US);
Frank A. Schaffa, Hartsdale, NY (US);
Eric M. Foster, Owego, NY (US);
Jeffrey B. Lotspiech, San Jose, CA (US);
Dalit Naor, Tel-Aviv, IL;
Sigfredo I. Nin, Morgan Hill, CA (US);
Florian Pestoni, Mountain View, CA (US);
Wilfred E. Plouffe, Jr., San Jose, CA (US);
Frank A. Schaffa, Hartsdale, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides a method, system and program product for modifying content usage conditions during broadcast content distribution. Specifically, the present invention allows protected (e.g., encrypted, secured, etc.) content to be received along with content usage conditions, an encrypted combination of the content usage conditions and a title key (e.g., a MAC), and a key management block. Using the key management block, a key encrypting key can be determined for decrypting the combination. Once the combination is decrypted, the content usage conditions can be modified (e.g., edited, added to, etc.).