Device enforced file level protection
US8898460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2009 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/805
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a technology by which files that are hardware protected on a storage device, such as a USB flash drive, are managed on a host, including by integration with an existing file system. Each file maintained on a storage device is associated with a protection attribute that corresponds to that file's device hardware protection level. Requests directed towards accessing metadata or actual file data are processed based upon the protection attribute and a state of authentication, e.g., to allow or deny access, show file icons along with their level of protection, change levels, and so forth. Also described is splitting a file system file table into multiple file tables, one file table for each level of protection. Entries in the split file tables are maintained based on each file's current level; space allocation tracking entries are also maintained to track the space used by other split tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.