Extended data signing
US8850189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Dec 21, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various embodiments enable so-called extended data to be added to a signed digital certificate without having a private key of a Certification Authority available. In at least some embodiments, a request to add extended data to a digital certificate generated by a certificate authority is received from a client device. The digital certificate includes a signed first portion, and an unsigned second portion that includes reserved empty spaces that are reserved for the extended data. The extended data is added to the unsigned second portion. the extended data includes a client ID associated with the client device. The unsigned portion of the digital certificate is signed after the extended data is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.