Group rekey in a communication system
US5146497A · kind A · utility
49Cited by
13References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Feb 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This method of key distribution rekeys (605) a group of communication units (107) within an encrypted communication system with over-the-channel rekeying. The method uses a key management controller (101) to manage and distribute keys (1541) to a plurality of communication units and handle acknowledgments from the plurality of communication units that are delayed from receipt of the rekeying message. The rekeying message (615) is sent to any of the group of communication units (107) when an acknowledgment is not received (611) from one or more of the group of communication units (107).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.