Flexible digital rights management with secure snippets

• US 20070294181A1
• Filed: 05/21/2007
• Published: 12/20/2007
• Est. Priority Date: 05/22/2006
• Status: Abandoned Application

• Current Assignee: III Holdings 2, LLC
• Original Assignee: III Holdings 2, LLC
• Inventors: Ashok, Raksit, Chheda, Saurabh, Carver, Kristopher, Moritz, Csaba, Eldredge, Jared
• Application Number:
  US11/804,947
• Publication Number:
  US 20070294181A1
• Time in Patent Office: Days
• US Class Current: 705/59
• 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 21/1063 Personalisation
• CPC Class Codes: G06F 2221/2141 Access rights, e.g. capability lists, access control lists, access tables, access matrices

Abstract

A method, for use in a DRM context, wherein digital rights enforcing processing is embedded into the rights object. A method, for use in a DRM context, wherein digital rights enforcing is downloaded to a device related to a content access. A processor framework, containing a VISC engine and executing digital rights enforcing codes, wherein the rights enforcing codes are downloaded. A digital rights management framework, wherein a rights enforcing code is downloaded related to a content access.

Claims

1. A method, for use in a DRM context, wherein digital rights enforcing related processing is embedded into a rights object.

2. The method of claim 1, wherein a rights enforcing code is a secure snippet implemented with a VISC instruction encoding approach.

3. The method of claim 2, wherein the device executes VISC code in a virtual machine.

4. The method of claim 2, wherein the device executes VISC code in a security processor.

5. The method of claim 2, wherein rights enforcing code is based on an encrypted code executing on a microprocessor with a fixed instruction set architecture.

6. The method of claim 2, wherein the device executing the rights enforcing code implements the authorization protocol and services defined for a trusted platform module.

7. A method, for use in a DRM context, wherein digital rights enforcing related code is downloaded to a device related to a content access.

8. The method of claim 7, wherein the rights enforcing code is a VISC code.

9. The method of claim 8, wherein the VISC code is executed on a virtual machine in the receiving device.

10. The method of claim 8, wherein the VISC code executes on a security processor compliant with the VISC approach for instruction decoding.

11. The method of claim 7, wherein the rights enforcing code is an encrypted code generated for a fixed instruction set architecture processor.

12. A processor framework, containing a VISC engine and executing digital rights enforcing codes wherein the rights enforcing codes are downloaded triggered by content access.

13. The method of claim 12, wherein the rights object is enforcing parental control.

14. The method of claim 12, wherein a VISC secure snippet is embedded into a digital media viewer for security purposes.

15. A digital rights management framework, wherein a rights enforcing code is downloaded related to a content access.

16. The method of claim 15, wherein a digital rights management system is supported on different platforms with different instruction set architectures, by using VISC secure snippets based rights enforcing.

17. The method of claim 15, wherein the rights object contains a key related to decoding of a VISC code in the receiving device.

18. The method of claim 15, wherein the rights enforcing is executing in a mobile device.

19. The processing framework of claim 15, implementing support for both secure snippets based rights enforcing and built-in DRM models.

20. The method of claim 15, customizing an OMA rights object with arbitrary rights by embedding a rights enforcing code directly into the OMA rights object.