Protection of shared data
US9202074B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2014 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Feb 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Approaches for protecting a data element are disclosed. The method includes encrypting the data element with a first key on a first client system. A set of permissions is stored in association with the encrypted data element, and a first signature is generated from the set of permissions for the data element. The first key is encrypted with a second key on the first client system. The encrypted first key is stored in association with the encrypted data element, and the second key is encrypted with a public key of a public-private key pair of a first user on the first client system. The first signature and the encrypted second key are transmitted from the first client system to a server system for storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.