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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
In this paper, a perfect information theoritical secure network coding scheme against the eavesdropping adversaries is proposed. We show that, if the number of channels the adversaries can eavesdrop on is less than the max-flow of a network, the max-flow of the network can be achieved. We also show that the proposed coding scheme has the property of being universal. All the coding scheme need is to reduce a small amount of overall capacity and a slightly modify the processing in the source and destinations, the operations at the intermediate nodes need not to be changed.
Keywords:Communication and Information System;Network coding; Security; Eavesdropping?