Scalable content restriction
US11563568B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2021 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Feb 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/0431
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Groups of devices may be prevented from accessing content by encrypting the content. A plurality of secrets associated with a decryption key may be generated using a secret sharing algorithm. The plurality of secrets may be sent to one or more groups of devices to derive the decryption key. A non-restricted subset of the groups of devices may receive one or more secrets. Devices within the non-restricted subset of the groups may be able to use one or more secrets to determine the decryption key for the content. Groups that do not receive one or more secrets may be unable to determine the decryption key for the content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.