Roaming encryption key rekeying apparatus and method

Details Roaming encryption key rekeying apparatus and method Roaming encryption key rekeying apparatus and method

H - Electricity

04

K

H04K 1/00 (2006.01)

Patent

CA 2603968

Roaming encryption key rekeying apparatus and method comprising a first system key management facility that communicates to a communication unit roaming information is disclosed. The roaming information is encrypted using a first encryption scheme that is decipherable by the communication unit. Further, the first system key management facility communicates to a second system key management facility the roaming information. In this communication, the roaming information is encrypted as a function of a second encryption scheme that is decipherable by the second system key management facility.

La présente invention concerne un appareil et un procédé de recomposition de clé de chiffrement d'itinérance comprenant une première installation de gestion de clé du système qui communique à une unité de communication des informations d'itinérance. Ces informations d'itinérance sont chiffrées au moyen d'un premier mécanisme de chiffrement qui peut être déchiffré par l'unité de communication. De plus, la première installation de gestion de clé du système communique à une seconde installation de gestion de clé du système lesdites informations d'itinérance. Lors de cette communication, les informations d'itinérance sont chiffrées comme fonction d'un second mécanisme de chiffrement qui peut être déchiffré par la seconde installation de gestion de clé du système.

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