Random clock composition-based cryptographic authentication process and locking system
US5598476A · kind A · utility
52Cited by
16References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Oct 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The first and second devices exchange randomly generated messages that are used in a composition-based encryption/decryption process. At least one of the randomly generated messages is, itself, encrypted before transmission. The composition-based process (a cyclic redundancy code process, preferably enhanced with midcycle non-Galois Field operation) is embedded in both devices and not readily discernable by playback attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.