Token provisioning

Details Token provisioning Token provisioning

H - Electricity

04

L

H04L 9/00 (2006.01)

Patent

CA 2556155

A method for provisioning a device such as a token (101). The device issues a certificate request to a Certification Authority (102). The request includes a public cryptographic key uniquely associated with the device. The Certification Authority generates a symmetric cryptographic key for the device (106), encrypts it using the public key (108), and creates a digital certificate that contains the encrypted symmetric key as an attribute. The Certification Authority sends the digital certificate to the device, which decrypts the symmetric key using the device's private key (107), and stores the decrypted symmetric key.

L'invention concerne un procédé pour fournir un dispositif tel qu'un jeton (101). Le dispositif émet une requête de certificat, destinée à une autorité de certification (102). La requête comprend une clé cryptographique publique associée de façon unique à ce dispositif. L'autorité de certification génère une clé cryptographique symétrique pour le dispositif (106), la chiffre au moyen de la clé publique (108) et crée un certificat numérique qui contient en tant qu'attribut la clé symétrique. L'autorité de certification envoie le certificat numérique au dispositif, qui déchiffre la clé symétrique en utilisant la clé privée (107) du dispositif et stocke la clé symétrique chiffrée.

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