Interoperable digital rights management

• US 8,190,918 B2
• Filed: 11/13/2006
• Issued: 05/29/2012
• Est. Priority Date: 11/13/2006
• Status: Active Grant

• Current Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Original Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Inventors: Robert, Arnaud, Watson, Scott, Lotspiech, Jeffrey
• Primary Examiner(s): ARMOUCHE, HADI S
• Application Number:
  US11/559,240
• Publication Number:
  US 20080114992A1
• Time in Patent Office: 2,024 Days
• Field of Search: 713/193, 713/189, 726 30- 33, 705/51, 705/57, 705/59
• US Class Current: 713/193
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/60 Protecting data
• CPC Class Codes: G06F 21/71 to assure secure computing or processing of information
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G11B 20/00 Signal processing not specific to the method of recording or reproducing; Circuits therefor
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00115 wherein the record carrier stores a unique medium identifier
• CPC Class Codes: G11B 20/00137 involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
• CPC Class Codes: G11B 20/00195 using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00246 wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
• CPC Class Codes: G11B 20/00253 wherein the key is stored on the record carrier
• CPC Class Codes: G11B 20/00282 the key being stored in the content area, e.g. program area, data area or user area key stored in a management area G11B20/00297
• CPC Class Codes: G11B 20/00347 wherein the medium identifier is used as a key
• CPC Class Codes: G11B 20/00427 advanced access content system [AACS]
• CPC Class Codes: G11B 20/00442 content protection for recordable media [CPRM]
• CPC Class Codes: G11B 20/00492 wherein content or user data is encrypted
• CPC Class Codes: G11B 20/00507 wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
• CPC Class Codes: G11B 20/0055 wherein license data is encrypted
• CPC Class Codes: G11B 20/00731 involving a digital rights management system for enforcing a usage restriction
• CPC Class Codes: G11B 20/0084 : wherein the usage restriction can be expressed as a specific time or date
• CPC Class Codes: G11B 20/00847 : wherein the usage restriction is defined by a licence file
• CPC Class Codes: G11B 20/00862 : wherein the remote server can grant the permission to use a content
• CPC Class Codes: G11B 20/00884 : involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
• CPC Class Codes: G11B 2220/17 : Card-like record carriers
• CPC Class Codes: G11B 2220/2537 : Optical discs
• CPC Class Codes: H04N 2005/91364 : the video signal being scrambled
• CPC Class Codes: H04N 5/781 : on disks or drums
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 5/907 : using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 5/913 : for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8047 : using transform coding

Abstract

In one aspect, there is provided a storage medium, the storage medium having a media content portion; and a plurality of digital rights management (DRM) envelopes, wherein each of the plurality of DRM envelopes corresponds to a different DRM format; wherein each of the plurality of DRM envelopes enables access to the media content portion according to its corresponding the DRM format. In another aspect, a method includes decrypting a second portion of the media content according to the secondary content access key to impart a marking in the decrypted first portion of the media content identifying the DRM format. In an additional aspect, a method includes presenting a product serial number to obtain an encryption key associated with the DRM format.

Claims

1. A method for use by a client device, the method comprising:

presenting a product serial number to a server for locating, by said server, an encryption key associated with a digital rights management (DRM) format of a plurality of DRM formats stored on a memory of said server, said encryption key residing on said memory of said server and not a memory of said client device;

obtaining said encryption key from said server in response to said presenting said product serial number;

locating a DRM envelope stored on said memory of said client device based on metadata stored on said memory of said client device;

decrypting said DRM envelope stored on said memory of said client device according to said encryption key to obtain a content access key; and

decrypting a media content according to said content access key.

2. The method of claim 1, wherein said product serial number is associated with said client device rendering a presentation based, at least in part, on said decrypted media content.

3. The method of claim 1, wherein said product serial number is associated with an application rendering a presentation based, at least in part, on said decrypted media content.

4. The method of claim 1, wherein said memory comprises a removable memory device, and wherein said product serial number is associated with said removable memory device.

5. The method of claim 1, wherein said product serial number is associated with a product accessing said media content according to said DRM format.

6. A client device comprising:

a computing platform configured to;

present a product serial number to a server for locating, by said server, an encryption key associated with a digital rights management (DRM) format of a plurality of DRM formats stored on a memory of said server, said encryption key residing on said memory of said server and not a memory of said client device;

obtain said encryption key from said server in response to said presenting said product serial number;

locate a DRM envelope stored on said memory of said client device based on metadata stored on said memory of said client device;

decrypt said DRM envelope stored on said memory of said client device according to said encryption key to obtain a content access key; and

decrypt a media content according to said content access key.

7. The client device of claim 6, wherein said product serial number is associated with said client device rendering a presentation based, at least in part, on said decrypted media content.

8. The client device of claim 6, wherein said product serial number is associated with an application rendering a presentation based, at least in part, on said decrypted media content.

9. The client device of claim 6, wherein said memory comprises a removable memory device, and wherein said product serial number is associated with said removable memory device.

10. The client device of claim 6, wherein said product serial number is associated with a product accessing said media content according to said DRM format.