Apparatus and method for secure transmission of data over an unsecure transmission channel
US4881263A · kind A · utility
146Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Sep 25, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods, readily adapted to interface with a standard data transmission network having an unsecure transmission channel, e.g., "Ethernet," for the provision of secure transmission of data over the network channel in a manner which is essentially transparent to the standard network devices and users thereof, are provided. Various encryption keys are generated and utilized within the system to disguise or encrypt information transferred between network nodes. The encryption keys are made known only to those network devices which are permitted to handle information encrypted with the encryption keys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.