Invention Grant
US08656178B2 Method, system and program product for modifying content usage conditions during content distribution
有权
用于在内容分发期间修改内容使用条件的方法,系统和程序产品
- Patent Title: Method, system and program product for modifying content usage conditions during content distribution
- Patent Title (中): 用于在内容分发期间修改内容使用条件的方法,系统和程序产品
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Application No.: US10125714Application Date: 2002-04-18
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Publication No.: US08656178B2Publication Date: 2014-02-18
- Inventor: Eric M. Foster , Jeffrey B. Lotspiech , Dalit Naor , Sigfredo I. Nin , Florian Pestoni , Wilfred E. Plouffe, Jr. , Frank A. Schaffa
- Applicant: Eric M. Foster , Jeffrey B. Lotspiech , Dalit Naor , Sigfredo I. Nin , Florian Pestoni , Wilfred E. Plouffe, Jr. , Frank A. Schaffa
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Hoffman Warnick LLC
- Agent Ian D. MacKinnon
- Main IPC: H04L9/32
- IPC: H04L9/32

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.).
Public/Granted literature
- US20030198351A1 Method, system and program product for modifying content usage conditions during content distribution Public/Granted day:2003-10-23
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