Protected content distribution system

• US 6,824,051 B2
• Filed: 06/07/2002
• Issued: 11/30/2004
• Est. Priority Date: 06/07/2001
• Status: Expired due to Term

• Current Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Original Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Inventors: Reddy, Karimireddy Hari, Lao, Guillermo, Budo-Marek, Andrej
• Primary Examiner(s): Frech, Karl D.
• Application Number:
  US10/163,632
• Publication Number:
  US 20030066884A1
• Time in Patent Office: 907 Days
• Field of Search: 235/380, 235/382, 235/382.5, 235/375, 235/385
• US Class Current: 235/380
• 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 2221/2141 Access rights, e.g. capability lists, access control lists, access tables, access matrices
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/105 Multiple levels of security
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32

Abstract

A system and method for managing use of items having usage rights associated therewith. In one embodiment, the method includes receiving a request for a license associated with an item on behalf of a license requesting user, the license requesting user having an associated identification mechanism. The method also includes determining whether the identification mechanism associated to the license requesting user is in an access list associated with the item, the access list having identification mechanisms associated with authorized users. The method further includes issuing the license associated with the item to the license requesting user upon determining that the identification mechanism associated to the license requesting user is in the access list.

Claims

1. A rights management system for managing use of items having usage rights associated therewith, said system comprising:

a user device adapted to receive a license having usage rights specifying a manner of use and being associated with at least one item, and allow authorized users to access said at least one item in accordance with said license;

an access list associated with said at least one item, said access list having identification mechanisms associated with said authorized users;

means for receiving a license request for access to said at least one item on behalf of a license requesting user, said license requesting user having an associated identification mechanism;

an access list managing device adapted to determine whether said identification mechanism associated to said license requesting user is in said access list, and provide instructions to issue said license associated with said at least one item; and

a license device adapted to issue said license associated with said at least one item upon receiving instructions from said access list managing device;

wherein said access list managing device is further adapted to provide instructions to said license device to issue said license associated with said at least one item upon determining that said identification mechanism associated to said license requesting user is in said access list.

2. The rights management system of claim 1, wherein said access list managing device is further adapted to not provide instructions to said license device upon determining that said identification mechanism associated to said license requesting user is not in said access list.

3. The rights management system of claim 1, wherein said identification mechanisms of said access list are e-mail addresses.

4. The rights management system of claim 3, wherein said access list is derived from an e-mail distribution list.

5. The rights management system of claim 1, further including an activation device adapted to issue software packages that enforces usage rights to control use of said items, said software packages including public keys associated with said authorized users.

6. The rights management system of claim 5, wherein said identification mechanisms of said access list are public keys obtained from said activation device.

7. The rights management system of claim 1, wherein said at least one item is a plurality of items, each of said plurality of items having an access list associated thereto.

8. The rights management system of claim 1, wherein said access list managing device is further adapted to modify said access list.

9. The rights management system of claim 8, wherein said access list managing device is adapted to modify said access list by at least one of adding and deleting at least one identification mechanism from said access list.

10. The rights management system of claim 1, wherein said identification mechanisms associated with said authorized users in said access list defines a trusted community.

11. The rights management system of claim 10, further including a content device adapted to facilitate communication with said authorized users in said trusted community.

12. The rights management system of claim 1, wherein said at least one item is at least one of a text file, an audio file, a video file, and a digital multimedia file.

13. The rights management system of claim 1, wherein said access list is external to said license.

14. The rights management system of claim 1, further comprising:

a rendering system, including;

a usage transaction processing means for generating usage requests; and

an input means coupled to said usage transaction processing means for enabling user created signals to cause generation of usage transaction messages to request usage to a digital work.

15. The rights management system of claim 14, wherein said rendering system is a printing device.

16. The rights management system of claim 14, wherein said rendering system is a display device.

17. The rights management system of claim 14, wherein said rendering system is a video playback device.

18. The rights management system of claim 14, wherein said rendering system is an audio playback device.

19. The rights management system of claim 1, further comprising:

a rendering system, including;

a usage transaction processing means for generating usage requests;

an input means coupled to said usage transaction processing means for enabling system created signals to cause generation of usage transaction messages to request usage to a digital work.

20. The rights management system of claim 19, wherein said rendering system is a printing device.

21. The rights management system of claim 19, wherein said rendering system is a display device.

22. The rights management system of claim 19, wherein said rendering system is a video playback device.

23. The rights management system of claim 19, wherein said rendering system is an audio playback device.

24. A method for managing use of items having usage rights associated therewith, said method comprising the steps of:

receiving a request for a license associated with at least one item on behalf of a license requesting user, said license having usage rights specifying a manner of use of said at least one item, said license requesting user having an associated identification mechanism;

determining whether said identification mechanism associated to said license requesting user is in an access list associated with said at least one item, said access list having identification mechanisms associated with authorized users who are authorized to access said at least one item; and

issuing said license associated with said at least one item to said license requesting user upon determining that said identification mechanism associated to said license requesting user is in said access list.

25. The method of claim 24, further including the step of instructing a license device to issue said license.

26. The method of claim 24, further including the step of generating said access list.

27. The method of claim 24, wherein said identification mechanisms of said access list are e-mail addresses.

28. The method of claim 27, further including the step of generating said access list from an e-mail distribution list.

29. The method of claim 24, further including the step of issuing software packages that enforces usage rights to control use of said items, said software packages including public keys associated with said authorized users.

30. The method of claim 29, wherein said identification mechanisms of said access list are public keys.

31. The method of claim 24, wherein said at least one item is a plurality of items, each of said plurality of items having an access list associated thereto.

32. The method of claim 24, further including the step of modifying said access list.

33. The method of claim 32, wherein said step of modifying said access list includes at least one of adding and deleting at least one identification mechanism from said access list.

34. The method of claim 24, further including the step of defining a trusted community of authorized users based on said access list.

35. The method of claim 34, further comprising the step of facilitating communication with said authorized users in said trusted community.

36. The method of claim 24, wherein said at least one item is at least one of a text file, an audio file, a video file, and a digital multimedia file.

37. The method of claim 24, wherein said access list is external to said license.

38. A computer readable medium storing computer readable instructions for causing one or more processors to perform the steps of:

receiving a request for a license associated with at least one item on behalf of a license requesting user, said license having usage rights specifying a manner of use of said at least one item, said license requesting user having an associated identification mechanism;

determining whether said identification mechanism associated to said license requesting user is in an access list associated with said at least one item, said access list having identification mechanisms associated with authorized users who are authorized to access said at least one item; and

issuing said license associated with said at least one item to said license requesting user upon determining that said identification mechanism associated to said license requesting user is in said access list.

39. The computer readable medium of claim 38, further including instructions for causing the one or more processors to perform the step of instructing a license device to issue said license.

40. The computer readable medium of claim 38, further including instructions for causing the one or more processors to perform the step of generating said access list.

41. The computer readable medium of claim 38, wherein said identification mechanisms of said access list are e-mail addresses.

42. The computer readable medium of claim 41, further including instructions for causing the one or more processors to perform the step of generating said access list from an e-mail distribution list.

43. The computer readable medium of claim 38, further including instructions for causing the one or more processors to perform the step of issuing software packages that enforces usage rights to control use of said items, said software packages including public keys associated with said authorized users.

44. The computer readable medium of claim 43, wherein said identification mechanisms of said access list are public keys.

45. The computer readable medium of claim 38, wherein said at least one item is a plurality of items, each of said plurality of items having an access list associated thereto.

46. The computer readable medium of claim 38, further including instructions for causing the one or more processors to perform the step of modifying said access list.

47. The computer readable medium of claim 46, wherein said step of modifying said access list includes at least one of adding and deleting at least one identification mechanism from said access list.

48. The computer readable medium of claim 38, further including instructions for causing the one or more processors to perform the step of defining a trusted community of authorized users based on said access list.

49. The computer readable medium of claim 48, further including instructions for causing the one or more processors to perform the step of facilitating communication with said authorized users in said trusted community.

50. The computer readable medium of claim 38, wherein said at least one item is at least one of a text file, an audio file, a video file, and a digital multimedia file.

51. The computer readable medium of claim 38, wherein said access list is external to said license.

52. A device for managing use of items having usage rights associated therewith for use in a rights management system, including an access list managing device, a license device, an activation device, and a content device, said access list managing device adapted to determine whether an identification mechanism associated to a license requesting user is in an access list, and provide instructions to issue a license associated with at least one of said items, provide instructions to a license device to issue said license associated with said at least one of said items upon determining that said identification mechanism associated to said license requesting user is in said access list, said license device adapted to issue said license associated with said at least one of said items upon receiving instructions from said access list managing device, said device for managing use of said items comprising:

means for receiving a license having usage rights specifying a manner of use and being associated with at least one item, and allow authorized users to access said at least one item in accordance with said license; and

means for transmitting a license request for access to said at least one item on behalf of a license requesting user, said license requesting user having an associated identification mechanism,

wherein an access list is associated with said at least one item and having identification mechanisms associated with said authorized users.

53. The device of claim 52, wherein said access list managing device is further adapted to not provide instructions to said license device upon determining that said identification mechanism associated to said license requesting user is not in said access list.

54. The device of claim 52, wherein said identification mechanisms of said access list are e-mail addresses.

55. The device of claim 54, wherein said access list is derived from an e-mail distribution list.

56. The device of claim 55, wherein said activation device is adapted to issue software packages that enforces usage rights to control use of said items, said software packages including public keys associated with said authorized users.

57. The device of claim 56, wherein said identification mechanisms of said access list are public keys obtained from said activation device.

58. The device of claim 52, wherein said at least one item is a plurality of items, each of said plurality of items having an access list associated thereto.

59. The device of claim 52, wherein said access list managing device is further adapted to modify said access list.

60. The device of claim 59, wherein said access list managing device is adapted to modify said access list by at least one of adding and deleting at least one identification mechanism from said access list.

61. The device of claim 52, wherein said identification mechanisms associated with said authorized users in said access list defines a trusted community.

62. The device of claim 61, wherein said content device is adapted to facilitate communication with said authorized users in said trusted community.

63. The device of claim 52, wherein said at least one item is at least one of a text file, an audio file, a video file, and a digital multimedia file.

64. The device of claim 52, wherein said access list is external to said license.