Distributed delegated path discovery and validation

G - Physics – 06 – F

Patent

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G06F 21/00 (2006.01) H04L 9/32 (2006.01)

Patent

CA 2544273

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.

La présente invention a trait à la fourniture d'information de validation de trajets pour un système comprend la détermination de trajets entre un sous-ensemble de certificat du système et au moins une tête de confiance, la mémorisation des trajets dans une table préalablement à une demande d'information de validation de trajet, et l'extraction de l'information de validation mémorisée dans la table en réponse à une demande d'information de validation de trajet. La fourniture d'information de validation de trajet peut également comprendre la signature numérique de l'information de validation de trajet. La fourniture d'information de validation de trajet peut en outre comprendre l'application de contraintes à l'information de validation de trajet et la fourniture d'information de trajet en conformité avec les contraintes. La détermination de trajets peut comprendre la construction d'un graphe orienté de têtes de confiance et du sous-ensemble de certificats et la réalisation d'une recherche acyclique en profondeur d'abord du graphe.

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