Method for secure key management using a biometric

H - Electricity – 04 – L

Patent

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

Patent

CA 2286749

This invention describes a secure method for consistently reproducing a digital key using a biometric, such as a fingerprint. The digital key is linked to the biometric only through a secure block of data, known as the protected filter. The key cannot be released from the protected filter other than via the interaction with the correct biometric image. Once generated, the digital key may be used in a system as an encryption/decryption key, or as a personal identification number (PIN).

L'invention a pour objet un procédé protégé permettant de reproduire avec régularité un code numérique à l'aide d'une identification biométrique, telle qu'une empreinte digitale. Le code numérique est lié à l'identification biométrique uniquement par un bloc protégé de données, connu comme le filtre protégé. Le code ne peut pas être libéré du filtre protégé autrement que par l'interaction avec l'image biométrique correcte. Une fois généré, le code numérique peut être utilisé dans un système tel qu'une clé de cryptage/décryptage ou un numéro d'identification personnel (code PIN).

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