Generic file protection format
US8397068B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Apr 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A file may contain an unencrypted and an encrypted portion. The unencrypted portion may contain a layout section that may point to a published license, metadata, and a contents section, where the contents section is in the encrypted portion. The encrypted portion may contain the contents section which may act as a directory for one or more included files that may be compressed and stored in the encrypted portion. When the file is opened by a receiver, the receiver may read the published license and communicate with a security server to establish access rights and receive at least one key for decrypting at least a portion of the encrypted portion of the file. The receiver may then gain access to the included files.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.