Distributed delegated path discovery and validation
US8707030B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3265
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Providing path validation information for a system includes determining paths between a subset of certificate of the system and at least one trust root, storing each of the paths in a table prior to a request for path validation information, and fetching the validation information stored in the table in response to a request for path validation information. Providing path validation information may also include digitally signing the validation information. Providing path validation information may also include applying constraints to the validation information and only providing validation information that is consistent with the constraints. Determining paths may include constructing a directed graph of trusted roots and the subset of certificates and performing a depth-first acyclic search of the graph.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.