Method And System For Dynamically Granting A DRM License Using A URL

• US 20090183000A1
• Filed: 08/20/2008
• Published: 07/16/2009
• Est. Priority Date: 01/16/2008
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Krig, Scott
• Application Number:
  US12/195,221
• Publication Number:
  US 20090183000A1
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management
• CPC Class Codes: H04L 63/0442 wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption cryptographic mechanisms or cryptographic arrangements for public-key encryption H04L9/30
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32

Abstract

A media device may request a DRM license and/or access to media content from a web server by generating and sending a URL to the web server. The URL may comprise information regarding the web server, the media device and/or requested media content such as the media device PKI public key, device ID and/or certificate of authority. Information exchanged between the web server and the media device may be encrypted/decrypted with public infrastructure (PKI) public keys and private keys. DRM licensing may be handled via HTTP responses and/or queries, for example, when receiving a DRM license, authentication information and/or public key information. The media device may obtain licensed media content by sending to the web server, a URL comprising information regarding the web server, the media device, the media content and/or authentication. The web server may authenticate the media device.

Claims

1. A method for communication, the method comprising:

generating at a media device, a URL comprising information that requests DRM protected media content from a web server; and

acquiring said DRM protected media content from said web server utilizing said generated URL.

2. The method according to claim 1, wherein information sent from said web server to said media device is encrypted with a media device public infrastructure (PKI) public key.

3. The method according to claim 1, comprising decrypting information sent from said web server to said media device with said media device PKI private key.

4. The method according to claim 1, comprising encrypting information sent from said media device to said web server with a web server PKI public key.

5. The method according to claim 1, wherein information sent from said media device to said web server is decrypted with said web server PKI private key.

6. The method according to claim 1, wherein said URL comprises a URL for a link to said web server.

7. The method according to claim 1, wherein said media device information comprises at least one of said media device identification, said media device PKI public key and said media device certificate of authority.

8. The method according to claim 1, comprising receiving one or more HTTP responses and/or queries to one or more requests for said DRM protected media content.

9. The method according to claim 1, comprising receiving authentication information and/or a web server PKI public key from said server by said media device.

10. The method according to claim 1, wherein said web server grants a DRM license for gaining access to said media content to said media device.

11. The method according to claim 1, wherein said generated URL comprises one or more of web server information, media device information, identification of said requested media content and authentication information.

12. The method according to claim 11, wherein said web server authenticates said media device based on one or more of said authentication information comprised within said URL and authentication information sent separately from said URL.

13. The method according to claim 1, wherein said web server communicates a rejection of said requesting a digital rights management (DRM) license for gaining access to media content via an HTTP response subsequent to receiving said URL that requests DRM protected media content.

14. A system for securing media content, the system comprising:

one or more processors in a media device that generates a URL comprising information that requests DRM protected media content from a web server; and

said one or processors acquires said DRM protected media content from said web server utilizing said generated URL.

15. The system according to claim 14, wherein information sent from said web server to said media device is encrypted with a media device public infrastructure (PKI) public key and decrypted with said media device PKI private key.

16. The system according to claim 14, wherein said at least one processor enables decryption of information sent from said web server to said media device with said media device PKI private key.

17. The system according to claim 14, wherein said at least one processor enables encryption of information sent from said media device to said web server with a web server PKI public key.

18. The system according to claim 14, wherein information sent from said media device to said web server is decrypted with said web server PKI private key.

19. The system according to claim 14, wherein said web server information comprises a URL for said web server.

20. The system according to claim 14, wherein said media device information comprises at least one of said media device identification and said media device PKI public key and said media device certificate of authority.

21. The system according to claim 14, wherein said at least one processor enables reception of one or more HTTP responses and/or queries to one or more requests for said DRM protected media content.

22. The system according to claim 14, wherein said at least one processor enables reception of authentication information and/or a web server PKI public key from said server by said media device.

23. The system according to claim 14, wherein said web server grants a DRM license for gaining access to said media content to said media device.

24. The system according to claim 14, wherein said generated URL comprises one or more of web server information, media device information, identification of said requested media content and authentication information.

25. The system according to claim 24, wherein said web server authenticates said media device based on one or more of said authentication information comprised within said URL and authentication information sent separately from said URL.

26. The system according to claim 14, wherein said web server communicates a rejection of said requesting a digital rights management (DRM) license for gaining access to media content via an HTTP response subsequent to receiving said URL that requests DRM protected media content.

27. A machine-readable storage having stored thereon, a computer program having at least one code section for securing media content, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

generating at a media device, a URL comprising information that requests DRM protected media content from a web server; and

acquiring said DRM protected media content from said web server utilizing said generated URL.

28. The machine-readable storage according to claim 27, wherein information sent from said web server to said media device is encrypted with a media device public infrastructure (PKI) public key.

29. The machine-readable storage according to claim 27, wherein said at least one code section comprises code for decrypting information sent from said web server to said media device with said media device PKI private key.

30. The machine-readable storage according to claim 27, wherein said at least one code section comprises code for encrypting information sent from said media device to said web server with a web server PKI public key.

31. The machine-readable storage according to claim 27, wherein information sent from said media device to said web server is decrypted with said web server PKI private key.

32. The machine-readable storage according to claim 27, wherein said URL comprises a URL for a link to said web server.

33. The machine-readable storage according to claim 27, wherein said media device information comprises at least one of said media device identification, said media device PKI public key and said media device certificate of authority.

34. The machine-readable storage according to claim 27, wherein said at least one code section comprises code for receiving one or more HTTP responses and/or queries to one or more requests for said DRM protected media content.

35. The machine-readable storage according to claim 27, wherein said at least one code section comprises code for receiving authentication information and/or a web server PKI public key from said server by said media device.

36. The machine-readable storage according to claim 27, wherein said web server grants a DRM license for gaining access to said media content to said media device.

37. The machine-readable storage according to claim 27, wherein said generated URL comprises one or more of web server information, media device information, identification of said requested media content and authentication information.

38. The machine-readable storage according to claim 37, wherein said web server authenticates said media device based on one or more of said authentication information comprised within said URL and authentication information sent separately from said URL.

39. The machine-readable storage according to claim 27, wherein said web server communicates a rejection of said requesting a digital rights management (DRM) license for gaining access to media content via an HTTP response subsequent to receiving said URL that requests DRM protected media content.