Early detection system and method for encrypted signals...

Details Early detection system and method for encrypted signals... Early detection system and method for encrypted signals...

H - Electricity

04

L

H04L 9/00 (2006.01) H04L 12/56 (2006.01) H04L 12/66 (2006.01) H04M 11/06 (2006.01) H04Q 3/64 (2006.01)

Patent

CA 2537083

A system and method for providing early detection of encrypted signals within a secure connection for voice over Internet protocol (VoIP). The system and method includes a non-complex, in-band, and early encryption detector within the voice path. A transmitter sends out a known pattern. Based upon the received pattern, the receiver decides whether its encryption capabilities match up with those of the transmitter. If the capabilities do not match, then the receiver waits for the signalling message for the correct mode of operation. No packets are utilized until the receiver and transmitter encryption capabilities are matched.

Un système et une méthode pour exécuter une détection précoce de signaux cryptés dans une connexion protégée vocale de protocole Internet. Le système et la méthode comprennent un détecteur précoce de cryptage non complexe, en bande, à l'intérieur du trajet vocal. Un émetteur transmet un modèle connu. Selon le modèle reçu, le récepteur décide si les capacités de cryptage correspondent à celles de l'émetteur. Si les capacités ne correspondent pas, le récepteur attend le message de signalement du bon mode de fonctionnement. Il n'y a pas de paquets utilisés avant que les capacités de cryptage du récepteur et de l'émetteur correspondent.

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