Proof-of-work key wrapping for temporally restricting data access
US11316839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Dec 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The technology disclosed herein provides an enhanced access control mechanism that uses a proof-of-work key wrapping system to temporally restrict access to data. An example method may include: determining, by a processing device, characteristics of a computing device; accessing a cryptographic key for accessing content; selecting a set of cryptographic attributes for wrapping the cryptographic key, wherein the set of cryptographic attributes are selected to enable the computing device to derive the cryptographic key from a wrapped key in a predetermined duration of time; and providing the wrapped key and an indication of at least one of the cryptographic attributes to the computing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.