Remote key manipulations for over-the-air re-keying
US5146498A · kind A · utility
82Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Jan 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of remotely changing an original voice encryption key in a secure radio (10) is provided which includes a central controller (20) transmitting to the secure radio a digital word (42) representing a selective operation to be performed on the original voice encryption key stored in the radio (10). In response to the digital word (42), the radio (10) performs the operation on the original voice encryption key to generate a current voice encryption key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.