Data transfer method with varying packet transmission time...

H - Electricity – 04 – L

Patent

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Details

H04L 12/22 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04Q 7/22 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2331612

A message to be communicated over an unsecure communications link (16) is fragmented (26) into a plurality of packets (each of perhaps varying length). The packets are then individually transmitted (20) over the unsecure communications link with an introduced varying (perhaps, randomly or pseudo- randomly) selected inter-packet time interval (delay). Received packets are then reassembled (36) to regenerate the original message. To provide enhanced security against eavesdropping, the packets are not only transmitted in a non- timely manner (28) with the inter-packet time delay, but are also either routed (32) over different transmission paths (34) supported by the communications link or disordered (30) in a random or pseudo-random manner prior to transmission.

Un message destiné à être communiqué par une liaison de communication non sûre (16) est fragmenté (26) en plusieurs paquets (chacun pouvant être de longueur variable). Les paquets sont ensuite transmis individuellement (20) par la liaison de communication non sûre avec un intervalle de temps (délai) entre paquets sélectionné, introduit variable (peut-être, aléatoire ou pseudo-aléatoire). Les paquets reçus sont alors réassemblés (36) pour restaurer le message original. Pour améliorer la sécurité contre les écoutes clandestines, non seulement les paquets sont transmis de façon non-temporisée (28) avec le délai inter-paquet, mais il sont aussi acheminés (32) par différentes voies de transmission (34) supportées par la liaison de communication ou bien désordonnés (30) de façon aléatoire ou pseudo-aléatoire avant la transmission.

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