Decryption key generation and recovery
US12395331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2022 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | May 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/088
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A decryption key is recovered that is utilized to decrypt an encrypted resource. One or more location attribute policy (LAP) servers determine whether a user attempting to access a resource has the necessary attributes to access the resource and is in a valid location in which the user is required to be to access the resource. The attributes and location are defined by a policy assigned to the resource. To verify that the user has the required attributes, the LAP server(s) request a cryptographic proof from the user that proves that the user has the required attributes. Upon validating the proof, a first portion of the decryption key is released. The LAP server(s) release a second portion of the decryption key after verifying that the user is in the required location. The LAP server(s) generate the decryption key based on the released portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.