Patent ID: 7526643
Filing Date: 2009-04-28
Classification: H04L

Abstract:
1. A data transmission system comprising: a plurality of nested communication links communicably connected to a network, each communication link including an originating node and a corresponding terminating node which are adapted to route a transmission therebetween, wherein the transmission between the originating node and the corresponding terminating node of an outermost communication link is routed through at least one inner communication link; the outermost communication link is adapted to generate the transmission at the corresponding originating node, the transmission including a data part and a first header part, both in an encrypted format, route the transmission to the corresponding terminating node, and decrypt the data part and the first header part at the corresponding terminating node; and the at least one inner communication link is adapted to modify the transmission at the corresponding originating node by removing unencrypted references to other communication links and adding a second header part in an encrypted format, route the transmission to the corresponding terminating node, and decrypt the second header part at the corresponding terminating node.