Method for personalisation of an active card

H - Electricity – 04 – M

Patent

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Details

H04M 17/02 (2006.01) G07F 7/10 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2115435

Personalisation of an active so-called SIM card (11) for a mobile telephone system of GSM type is effected in a place (3) connected to the central computer (1) of the system via a communication network (2). The card identity IMSI and the card authentication key Ki are transferred in line-encrypted form (DES) to terminal equipment (9) in said place, where the card (11) is inserted in a reader (10). After line decryption (12, 13), the result thereof is transferred to the card in a manner to prevent unauthorised listening-in. This can be done in a safety box or by double encryption (A3/A8) of IMSI and Ki, the decryption thereof being performed within the card by means of a unique card key Ksim.

La personnalisation d'une carte SIM active (11) pour un système téléphonique mobile du type GSM se fait à un endroit (3) connecté à l'ordinateur central (1) du système par l'intermédiaire d'un réseau de communication (2). L'IISM et la clé d'authentification de carte Ki sont transmis par chiffrement en ligne (DES) à l'équipement terminal (9) à cet endroit, où la carte (11) est insérée dans un lecteur (10). Après le déchiffrement (12, 13), les résultats sont transmis à la carte de façon à empêcher les écoutes non autorisées. Ceci peut se faire au moyen d'un « coffre-fort » ou d'un double chiffrement (A3/A8) de l'IISM et de la clé Ki, le déchiffrement étant effectué dans la carte au moyen d'une carte de clé particulière Ksim.

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