Secret key generating method, common key generating method, encryption method, cryptographic communication method and cryptographic communication system
US6996724B2 · kind B2 · utility
19Cited by
8References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Feb 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0847
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
At the time when generating a secret key of each entity by using each divided identification information (ID division vector) obtained by dividing identification information (ID vector) of each entity into a plurality of blocks and by using a secret symmetric matrix of each key generating agency (center), a part of the components of the symmetric matrix is extracted in accordance with each divided identification information (ID division vector) so that the extracted components are synthesized with a random number particular to each entity so as to generate a secret key of each entity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.