Blockchain folding

Patent metadata

Field	Value
Publication number	US-12052259-B2
Application number	US-202318356934-A
Country	US
Kind code	B2
Filing date	Jul 21, 2023
Priority date	Apr 25, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

An active distributed ledger may comprise an indication of an inactive permission associated with a user device. An entry comprising such indication added to another distributed ledger that is supplemental to the active distributed ledger. An updated active distributed ledger may be generated that does not comprise the indication of the inactive permission. The updated active distributed ledger may comprise an indication of a new permission associated with the user device. The updated active distributed ledger may be stored on the user device or any other device on a network.

First claim

The invention claimed is:

1. A method comprising:
determining, based on a primary distributed ledger comprising a record of an active permission associated with a user device and a secondary distributed ledger comprising a record of an inactive permission associated with the user device, a position of the record of the inactive permission in an original distributed ledger; and
re-constructing, based on the position of the record of the inactive permission in the original distributed ledger, the original distributed ledger, wherein the original distributed ledger comprises the record of the active permission and the record of the inactive permission.

2. The method of claim 1 , wherein the user device comprises at least one of a lighting device, a sensor device, an alarm device, a temperature control device, a lighting control device, a lock device, a communication device, a camera device, or a home appliance device.

3. The method of claim 1 , wherein the determining the position of the record of the inactive permission in the original distributed ledger is based on receiving a new distributed ledger record entry associated with the user device.

4. The method of claim 1 , wherein the inactive permission associated with the user device comprises at least one of an expired permission, a revoked permission, or a permission associated with a security compromise.

5. The method of claim 1 , wherein the secondary distributed ledger is stored on a network computing device.

6. The method of claim 1 , wherein the secondary distributed ledger comprises a plurality of records of inactive permissions associated with the user device.

7. The method of claim 1 , wherein the primary distributed ledger is stored on the user device.

8. The method of claim 1 , wherein the secondary distributed ledger comprises an indication of a position of the record of the inactive permission on the original distributed ledger; and
wherein the re-constructing the original distributed ledger is based on the indication of the position of the record of the inactive permission on the original distributed ledger.

9. The method of claim 8 , wherein the primary distributed ledger comprises an indication of a position of the record of the active permission on the original distributed ledger; and
wherein the re-constructing the original distributed ledger is further based on the indication of the position of the record of the active permission on the original distributed ledger.

10. A device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the device to:
determine, based on a primary distributed ledger comprising a record of an active permission associated with a user device and a secondary distributed ledger comprising a record of an inactive permission associated with the user device, a position of the record of the inactive permission in an original distributed ledger; and
re-construct, based on the position of the record of the inactive permission in the original distributed ledger, the original distributed ledger, wherein the re-constructed original distributed ledger comprises the record of the active permission and the record of the inactive permission.

11. The device of claim 10 , wherein the user device comprises at least one of a lighting device, a sensor device, an alarm device, a temperature control device, a lighting control device, a lock device, a communication device, a camera device, or a home appliance device.

12. The device of claim 10 , wherein the determining the position of the record of the inactive permission in the original distributed ledger is based on receiving a new distributed ledger record entry associated with the user device.

13. The device of claim 10 , wherein the inactive permission associated with the user device comprises at least one of an expired permission, a revoked permission, or a permission associated with a security compromise.

14. The device of claim 10 , wherein the secondary distributed ledger is stored on a network computing device.

15. The device of claim 10 , wherein the secondary distributed ledger comprises a plurality of records of inactive permissions associated with the user device.

16. The device of claim 10 , wherein the primary distributed ledger is stored on the user device.

17. The device of claim 10 , wherein the secondary distributed ledger comprises an indication of a position of the record of the inactive permission on the original distributed ledger; and
wherein the re-constructing the original distributed ledger is based on the indication of the position of the record of the inactive permission on the original distributed ledger.

18. The device of claim 10 , wherein the primary distributed ledger comprises an indication of a position of the record of the active permission on the original distributed ledger; and
wherein the re-constructing the original distributed ledger is further based on the indication of the position of the record of the active permission on the original distributed ledger.

19. A system comprising:
a user device; and
a computing device configured to:
determine, based on a primary distributed ledger comprising a record of an active permission associated with the user device and a secondary distributed ledger comprising a record of an inactive permission associated with the user device, a position of the record of the inactive permission in an original distributed ledger; and
re-construct, based on the position of the record of the inactive permission in the original distributed ledger, the original distributed ledger, wherein the re-constructed original distributed ledger comprises the record of the active permission and the record of the inactive permission.

20. The system of claim 19 , wherein the user device comprises at least one of a lighting device, a sensor device, an alarm device, a temperature control device, a lighting control device, a lock device, a communication device, a camera device, or a home appliance device.

21. The system of claim 19 , wherein the determining the position of the record of the inactive permission in the original distributed ledger is based on receiving a new distributed ledger record entry associated with the user device.

22. The system of claim 19 , wherein the inactive permission associated with the user device comprises at least one of an expired permission, a revoked permission, or a permission associated with a security compromise.

23. The system of claim 19 , wherein the secondary distributed ledger is stored on a network computing device.

24. The system of claim 19 , wherein the secondary distributed ledger comprises a plurality of records of inactive permissions associated with the user device.

25. The system of claim 19 , wherein the primary distributed ledger is stored on the user device.

26. The system of claim 19 , wherein the secondary distributed ledger comprises an indication of a position of the record of the inactive permission on the original distributed ledger; and
wherein the re-constructing the original distributed ledger is based on the indication of the position of the record of the inactive permission on the original distributed ledger.

27. The system of claim 19 , wherein the primary distributed ledger comprises an indication of a position of the record of the active permission on the or

Assignees

• Comcast Cable Comm Llc

Inventors

• Haque Asad
• Davoust Nancy

Classifications

• H04L9/50

  using hash chains, e.g. blockchains or hash trees · CPC title

• H04L63/20

  for managing network security; network security policies in general (filtering policies H04L63/0227) · CPC title

• G06F21/604

  Tools and structures for managing or administering access control systems · CPC title

• H04L9/0637

  Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM] · CPC title

• H04L63/0435

  wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption (cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06) · CPC title