Invention Grant
US08488793B2 Efficient rebinding of partitioned content encrypted using broadcast encryption
失效
使用广播加密加密的分区内容的有效重新绑定
- Patent Title: Efficient rebinding of partitioned content encrypted using broadcast encryption
- Patent Title (中): 使用广播加密加密的分区内容的有效重新绑定
-
Application No.: US12533623Application Date: 2009-07-31
-
Publication No.: US08488793B2Publication Date: 2013-07-16
- Inventor: Thomas A. Bellwood , Robert B. Chumbley , Robert Glenn Deen , Matthew F. Rutkowski
- Applicant: Thomas A. Bellwood , Robert B. Chumbley , Robert Glenn Deen , Matthew F. Rutkowski
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Greg Goshorn, P.C.
- Agent John D. Flynn; Gregory K Goshorn
- Main IPC: H04L9/00
- IPC: H04L9/00

Abstract:
Provided is a method for rendering media content wherein a request to render a first media content stored in a first partition is received, wherein the first partition stores the first and a second media content; the media content is correlated to a first management key block (MKB), binding ID (IDb) and authorization table (AT); the first MKB, IDb and AT are compared to a current MKB, IDb and AT; and if any of the first MKB, IDb or AT do not correspond to the current MKB, IDb or AT, respectively, generating a second partition by rebinding the first media content with respect to the current MKB, IDb and AT to generate a title key; and associating the first media content, the current MKB, IDb, AT and title key with the second partition, wherein the second media content remains associated with the first MKB, IDb, AT and partition.
Public/Granted literature
- US20110026713A1 Efficient Rebinding of Partitioned Content Encrypted Using Broadcast Encryption Public/Granted day:2011-02-03
Information query