Recursive key schedule cryptographic system
US4776011A · kind A · utility
66Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1983 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Oct 24, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An encryption system in which a code word is processed, byte by byte, by a Vernan type process followed by non-linear encryption techniques, all of which are repeated several times, to generate a working key schedule. This key schedule is then used in the same process to encrypt the text.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.