Digital certificate cross-referencing
US6615347B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
As part of a security infrastructure based on public-key cryptography, a first digital certificate (200) is issued by a first certification authority (104) to a first subscriber (102) and binds the first subscriber (102) to a first public key (210). The first public key (210) corresponds to a first private key held by the first subscriber (102), and the first public key and the first private key form a key pair for use in public-key cryptography. The first digital certificate (200) is digitally signed by the first certification authority (104) and includes subscriber information (206) pertaining to the first subscriber (102) and related certificate information (216) at least partially identifying a second digital certificate (200). The second digital certificate (200) is issued by a second certification authority (104) to a second subscriber (102) and is digitally signed by the second certification authority (104). It binds the second subscriber (102) to a second public key (210) corresponding to a second private key held by the second subscriber (102). The second public key and the second private key form a key pair for use in public-key cryptography. The first subscriber (102)is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.