Common cryptokey generation system and communication system using common cryptokeys
US5016276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | May 7, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0847
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for generating a cryptokey (k) to be shared among entities (A, B) engaged in communications, in particular one known as the key predistribution system. Indentifiers (y.sub.A, y.sub.S) for the entities engaging in communications under a center and a center algorithm (G) which only the center knows are generated, then secret algorithms (x.sub.A, X.sub.B) distinct to each entity are generated on added to IC cards or other cipher generation means (2, 3). A cipher generation means (2, 3) is provided for each entity. The identifiers (y.sub.B, y.sub.A) of the other entity are applied to compute a cryptokey, whereby a common cryptokey is generated. Also disclosed is a system for communications using the above shared cryptokey.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.