Method of nullifying digital certificate, apparatus for nullifying digital certificate, and system, program, and recoring medium for nullifying digital certificate
US7634654B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2005 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jun 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of nullifying digital certificates for nullifying, by means of a communications apparatus, a digital certificate for use by a communications counterpart of the communications apparatus in authenticating includes the step of causing the communications apparatus to transfer to the communications counterpart, when determining based on a normal certificate being a valid digital certificate received from the communications counterpart or information received via a communications path based on the normal certificate that the normal certificate is to be nullified, a certificate for nullifying being a digital certificate for nullifying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.