Certificate management system and method
US7386722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2004 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0853
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A certificate management method is provided whereby a plurality of service providers have different reliable certificate authorities and, when certificates issued from the certificate authorities are implemented into a smart card, merely by revoking the certificate issued from the certificate authority on which the first service provider relies, all other implemented certificates can be revoked, and the certificates can be individually revoked. A system for implementing the method is provided. The certificate authorities n (n≧2) issue a certificate n by using a private key n′ corresponding to certificate n′ generated by using a certificate 1 issued from a certificate authority 1 which has previously been installed in the smart card and a corresponding private key 1. Thus, the issued certificates have a hierarchical chain relation. When the user wants to revoke all certificates, the certificate 1 issued from the certificate authority 1 is revoked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.