Apparatus and method for upgrading terminals to maintain a secure communication network
US5144664A · kind A · utility
195Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/162
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A secure communication network serves a plurality of terminals grouped into different security categories. Each terminal includes a replaceable security element containing a security algorithm specific to the security category to which the terminal is assigned. Upon the breach of a particular security version, the security elements in the affected category are replaced with new elements containing a different algorithm. The security elements are relatively low cost, and can be replaced on an as needed or periodic basis to maintain system security.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.