Certificate authenticating method, certificate issuing device, and authentication device
US8775796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2008 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A terminal device 4 transmits a certificate issue request including a communication ID thereof and a sub ID to a certificate issuing device 7 via a NW1 (a first network). The certificate issuing device 7 inquires of a communication ID (identifier) checking device 5 whether or not the communication ID included in the certificate issue request is in use or not and inquires of a communication ID/sub ID checking device 6 whether or not the communication ID and the sub ID are associated with each other. If both the check results are OK, the certificate issuing device 7 generates a certificate including the ID of the certificate issuing device 7, the communication ID, the sub ID and a validity period and transmits the certificate to the terminal device 4. In this way, a certificate with a short validity period can be issued only based on the access to the NW1 using the communication ID and the sub ID.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.