Method and means for securing the distribution of encoding keys
US4288659A · kind A · utility
81Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | May 21, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0891
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An improved secured data transmission system relies on the favorable comparison of coded signals derived from information about authorized individuals and particular data terminals that is both prestored and subsequently supplied under manual command in order to generate an operating key which is then used to encode and decode data that is entered after the initialization procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.