Controlling access to data in a data processing system
US7802310B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Jan 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99942
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Access to and delivery of licensed content is controlled using content names that were determined based on the content. A name for a data item is obtained, the name having been determined based at least in part on the data which comprise the contents of the data item. Access to the data item is authorized based at least in part on the name. Once authorized, access may be granted from more than one computer. The name may have been determined using a hash or message digest function such as MD4, MD5 or SHA. The data item may comprise a file, a portion of a file, a page in memory, a digital message, a digital image, a video signal or an audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.