Method of distributing encoding/decoding program and symmetric key in security domain environment and data divider and data injector therefor
US8379866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Oct 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of distributing an encoding/decoding program and a symmetric key in a security domain environment, and a device divider and data injector therefor are provided. The method includes selecting, at a highest-level security domain, an encoding/decoding program and a symmetric key to be distributed to a plurality of lower-level security domains; dividing the selected encoding/decoding program and the symmetric key into pieces as many as the number of lower-level security domains; and distributing the divided encoding/decoding program pieces and the symmetric key pieces to devices belonging to the lower-level security domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.