Digital Inheritance

• US 20080167994A1
• Filed: 07/07/2006
• Published: 07/10/2008
• Est. Priority Date: 07/22/2005
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Manders, Roland Peter Jan Mathijs, Moors, Eric Wilhelmus Josephus, Petkovic, Milan, Li, Hong, Rijckaert, Albert Maria Arnold
• Application Number:
  US11/996,369
• Publication Number:
  US 20080167994A1
• Time in Patent Office: Days
• US Class Current: 705/52
• 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 2221/2115 Third party

Abstract

The present invention relates to a method and a device of enabling inheritance of a digital content item. There is provided a method and a device by which inheritance of a digital content item is enabled by means of acquiring an inheritance license for an encrypted digital content item. The inheritance license specifies operations that are allowed to be performed on the content item after the death of its proprietor. Further, a death certificate of the proprietor of the encrypted content item is accessed, wherein authorization is given to perform at least a subset of the operations specified in the inheritance license on the encrypted content item.

Claims

1. A method of enabling inheritance of a digital content item, comprising:

acquiring an inheritance license for an encrypted digital content item, the inheritance license having operations that are allowed to be performed on the content item after the death of its proprietor; and

accessing a death certificate of the proprietor of said encrypted content item, wherein authorization is given to perform at least a subset of the operations, specified in the inheritance license, on the encrypted content item.

2. The method according to claim 1, wherein the inheritance license comprises a content item decryption key.

3. The method according to claim 1, wherein the inheritance license specifies that the content item should be deleted, said method further effecting deletion of the content item.

4. The method according to claim 1, wherein the inheritance license specifies that the content item should be published, said method further comprising decrypting the encrypted content item such that a clear text copy of said content item is provided and made public.

5. The method according to claim 1, wherein the inheritance license includes an identity of an intended inheritor of said encrypted content item, and said operations that are allowed to be performed on the content item after the death of its proprietor comprise establishing transfer of ownership to said intended inheritor, said method further comprising:

checking whether a matching criteria is satisfied for an identity of a claimant for said encrypted content item and the identity provided by the inheritance license; and

distributing, in case the matching criteria is considered to be satisfied, a content item decryption key to the claimant, wherein said claimant is given access to the content item.

6. The method according to claim 5, wherein said operations that are allowed to be performed on the content item after the death of its proprietor are defined by which access rights an intended inheritor has to said encrypted content item.

7. The method according to claim 5, wherein said identity of an intended inheritor of the content item is provided by including a public key of the intended inheritor in the inheritance license, and the matching criteria is considered to be satisfied if a public key of the claimant is identical to the public key included in the license.

8. The method according to claim 5, further comprising encrypting the content item decryption key with the public key of the intended inheritor before distribution.

9. The method according to claim 5 further comprising encrypting the inheritance license with a public key of the intended inheritor, wherein said identity of an intended inheritor of the content item is provided by the encryption of the inheritance license, and the matching criteria is considered to be satisfied if a successful decryption of the inheritance license is made with a private key that corresponds to the public key of the claimant.

10. The method according to claim 9, wherein decryption of the encrypted inheritance license is made after a trusted executor has accessed the death certificate of the proprietor.

11. The method according to claim 10, wherein further conditions must be satisfied before decryption is allowed, including that the intended inheritor must be 18 years or older.

12. The method according to claim 5, further comprising issuing an ownership license to the claimant for the content item in case the matching criteria is satisfied, the ownership license specifying the claimant as a new proprietor of the encrypted content item.

13. The method according to claim 12, further comprising including, in the ownership license, a timestamp representing time of issuing of said ownership license.

14. The method according to 12, wherein the ownership license specifies operations that are allowed to be performed on the content item after the death of its current proprietor and the ownership license further provides an identity of a new intended inheritor of said encrypted content item.

15. The method according to claim 5, further comprising

signing the inheritance license at a trusted third party;

creating an additional license which specifies operations that are allowed to be performed on the content item after the death of its proprietor, wherein the additional license further provides an identity of the intended inheritor of said encrypted content item; and

associating said additional license with the inheritance license.

16. The method according to claim 5, further comprising signing a message at the intended inheritor after transfer of ownership of the encrypted content item has been completed.

17. The method according to claim 5, further comprising including, in the inheritance license, a list of intended inheritors and operations that each intended inheritor is allowed to perform on the encrypted content item, wherein ownership of the encrypted content item can be transferred to a second inheritor if a first inheritor is deceased or does not accept the content item.

18. The method according to claim 1, further comprising generating a certificate signed with a private key of the first inheritor, wherein the certificate is used to determine whether ownership may be transferred to the second inheritor, in case the first inheritor does not accept the content item.

19. The method according to claim 17, wherein a death certificate of the first inheritor is used to determine whether ownership may be transferred to the second inheritor in case the first inheritor is deceased.

20. The method according to claim 17, wherein ownership of the encrypted content item can be transferred to at least a second and a third inheritor if a first inheritor is deceased or does not accept the content item.

21. The method according to claim 1, further comprising signing the inheritance license with a private key of a current proprietor of said content item.

22. A device for enabling inheritance of a digital content item, comprising:

means for acquiring an inheritance license for an encrypted digital content item, wherein the inheritance license specifies operations that are allowed to be performed on the content item after the death of its proprietor, the means accessing a death certificate of the proprietor of said encrypted content item, and wherein authorization is given to perform at least a subset of the operations specified in the inheritance license on the encrypted content item.

23. The device according to claim 22, wherein the inheritance license comprises a content item decryption key.

24. The device (102) according to claim 22, wherein the inheritance license specifies that the content item should be deleted and the means is arranged to delete the content item.

25. The device (102) according to claim 22, wherein the inheritance license specifies that the content item should be published and the means is arranged to decrypt the encrypted content item such that a clear text copy of said content item is provided and made public.

26. The device according to claim 22, wherein the inheritance license provides an identity of an intended inheritor of said encrypted content item, and said operations that are allowed to be performed on the content item after the death of its proprietor comprise establishing transfer of ownership to said intended inheritor, and the means is arranged to check whether a matching criteria is satisfied for an identity of a claimant for said encrypted content item and the identity provided by the inheritance license and to distribute, in case the matching criteria is considered to be satisfied, a content item decryption key to the claimant, wherein said claimant is given access to the content item.

27. The device according to claim 26, wherein said operations that are allowed to be performed on the content item after the death of its proprietor are defined by which access rights an intended inheritor has to said encrypted content item,

28. The device according to claim 26, wherein said identity of an intended inheritor of the content item is provided by including a public key of the intended inheritor in the inheritance license, and the matching criteria is considered to be satisfied if a public key of the claimant is identical to the public key included in the license.

29. The device according to claim 26, wherein the means is arranged to encrypt the content item decryption key with the public key of the intended inheritor before distribution.

30. The device according to claim 26, wherein the means is arranged to encrypt the inheritance license with a public key of the intended inheritor, wherein said identity of an intended inheritor of the content item is provided by encrypting the inheritance license, and the matching criteria is considered to be satisfied if a successful decryption of the inheritance license is made with a private key that corresponds to the public key of the claimant.

34. The device (302) according to claim 26, wherein the means is arranged to issue an ownership license to the claimant for the content item in case the matching criteria is satisfied, wherein the ownership license specifies the claimant as a new proprietor of the encrypted content item.

35. The device according to claim 34, wherein the ownership license includes a timestamp representing time of issuing of said ownership license.

36. The device (302) according to claim 34, wherein the ownership license specifies operations that are allowed to be performed on the content item after the death of its current proprietor and the ownership license further provides an identity of a new intended inheritor of said encrypted content item.

37. The device (402) according to claim 26, wherein the means is arranged to create an additional license which specifies operations that are allowed to be performed on the content item after the death of its proprietor, wherein the additional license further provides an identity of the intended inheritor of said encrypted content item and arranged to associate said additional license with the inheritance license.

38. The device (502) according to claim 26, wherein the inheritance license is arranged to specify a list of intended inheritors and operations that each intended inheritor is allowed to perform on the encrypted content item, wherein the ownership of the encrypted content item can be transferred to a second inheritor if a first inheritor is deceased or does not accept the content item.

39. The device according to claim 38, further comprising a certificate signed with a private key of the first inheritor, wherein the certificate is used to determine whether ownership may be transferred to the second inheritor in case the first inheritor does not accept the content item.

40. The device according to claim 38, wherein a death certificate of the first inheritor is accessed to determine whether ownership may be transferred to the second inheritor in case the first inheritor is deceased.

41. The device (502) according to claim 38, wherein the ownership of the encrypted content item is transferred to at least a second and a third inheritor if a first inheritor is deceased or does not accept the content item.

42. The device (502) according to claim 26, wherein the inheritance license is signed with a private key of a current proprietor of said content item.

31. (canceled)

32. (canceled)

33. (canceled)