On Secure Capacity of Multiple Unicast Traffic over Two-Layer Networks

01/10/2019
by   Gaurav Kumar Agarwal, et al.
0

This paper studies the problem of secure communication over two-layer networks, where a source is connected to a set of relays via direct edges. These relays are then connected to m destinations, such that each destination has direct connections to a subset of relays. In multiple unicast traffic, the source wishes to transmit independent information to each of the m destinations. This work studies the secure capacity region for this traffic over the defined two-layer networks, under the assumption of perfect information theoretic security criterion from an adversary who can access any K edges of the network. In particular, the secure capacity region is characterized when either K=1 or m=3. Moreover, conditions sufficient to characterize the secure capacity region are provided for arbitrary values of K and m.

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