File system support for rolling keys
US10032038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2015 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | May 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This application relates to a key rolling process for a file system of a computing device. The key rolling process allows for files to be transparently re-encrypted in a background process while still allowing applications to access files being re-encrypted. During re-encryption, a portion of the file is decrypted using a current key for the file and re-encrypted using a new key for the file. During re-encryption, the portion of the file can be relocated to another location in memory. Metadata associated with the file can be updated to include information pertaining to the location of the re-encrypted portion. The metadata can also be updated include information pertaining to how much of the file has been re-encrypted with the new key and how much of the file remains encrypted with the current key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.