Embedding intermediate certificate in digital certificate
US12143509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2022 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Jan 1, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3265
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Technology is shown for verifying a leaf certificate in a PM chain of trust involving receiving a leaf certificate signed by an intermediate certificate embedded in the leaf certificate. The intermediate certificate is extracted from the received leaf certificate and its public key used to calculate a signature for the received leaf certificate. The calculated signature is compared to a signature included in the received leaf certificate. The received leaf certificate is verified when the calculated signature matches the signature included in the received leaf certificate. The intermediate certificate can be included as a X.509 property of the leaf certificate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.