Systems and methods for partial matching searches of...

G - Physics – 06 – F

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G06F 21/24 (2006.01)

Patent

CA 2697705

Systems and methods are provided for encryption allowing partial matching searches to retrieve data that is retained in a database. A user identification number or other characteristic is stored in unencrypted form such that a wildcard search may be performed to retrieve one or more encrypted indexes associated with the unencrypted user identification. These encrypted indexes are then unencrypted by use of a key to determined their associated unencrypted index and corresponding targeted retained data. The targeted retained data may then be accessed by an authorized entity such as a law enforcement agency.

L'invention propose des systèmes et des procédés pour un cryptage permettant des recherches à concordance partielle pour extraire des données qui sont retenues dans une base de données. Un numéro d'identification d'utilisateur ou une autre caractéristique est stockée sous une forme non cryptée de telle sorte qu'une recherche approximative puisse être effectuée pour extraire un ou plusieurs indices cryptés associés à l'identification d'utilisateur non cryptée. Ces indices cryptés sont ensuite décryptés à l'aide d'une clef pour déterminer leur indice non crypté associé et les données retenues ciblées correspondantes. Une entité autorisée, telle qu'un organisme d'application de la loi, peut ensuite avoir accès aux données retenues ciblées.

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