Bearer control of encrypted data flows in packet data...

G - Physics – 06 – F

Patent

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G06F 1/24 (2006.01)

Patent

CA 2573917

In a communication session in which data flows with encrypted data packets pass through a monitoring intermediary for data traffic control. The encrypted data packets include SPIs (Secured Parameter Indexes) which are used to identify SAs (Security Associations) for data decryption. During the initial signaling process for the communication session, the nodes seeking the communication session include the SPIs in the signaling messages and send the signaling messages through the monitoring intermediary which in turn matches the SPIs of the signaling messages with the corresponding SPIs extracted from the data packets. In enforcing data traffic control, the monitoring intermediary allows data flows to pass through if comparison matches in the SPIs are found. Otherwise, the data flows are rejected.

Dans une session de communication dans laquelle des flux de données avec des paquets de données chiffrées passent par un intermédiaire de contrôle pour l'aiguillage du trafic de données. Les paquets de données chiffrées comportent des indices de paramètres de sécurité (SPI) qui sont utilisés pour identifier des associations de sécurité (SA) pour le déchiffrement de données. Lors du procédé de signalisation initial pour la session de communication, les noeuds demandant la session de communication ajoutent les SPI aux messages de signalisation et transmettent les messages de signalisation par l'intermédiaire de contrôle qui ensuite associe les SPI des messages de signalisation aux SPI correspondants extraits des paquets de données. Lors de l'aiguillage du trafic, l'intermédiaire de contrôle autorise les flux de données si la comparaison est fructueuse au niveau des SPI et bloque les flux de données si la comparaison est infructueuse.

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