Changing of shared encryption key
US8127135B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Dec 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/72
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system comprises a first operating environment and a second operating environment. The first and second operating environments exchange information in encrypted form using a shared encryption key (K3). The first and second operating environments cooperate to change the encryption key K3 using another shared encryption key (K4). The encryption key K4 is changed upon the encryption key K3 being changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.