TY - GEN
T1 - Secure cascade channel synthesis
AU - Satpathy, Sanket
AU - Cuff, Paul
PY - 2013
Y1 - 2013
N2 - We investigate channel synthesis in a cascade setting where nature provides an iid sequence Xn at node 1. Node 1 can send a message at rate R1 to node 2 and node 2 can send a message at rate R2 to node 3. Additionally, all 3 nodes share bits of common randomness at rate R 0. We want to generate sequences Y n and Zn along nodes in the cascade such that (Xn, Y n, Z n) appears to be appropriately correlated and iid even to an eavesdropper who is cognizant of the messages being sent. We characterize the optimal tradeoff between the amount of common randomness used and the required rates of communication. We also solve the problem for arbitrarily long cascades and provide an inner bound for cascade channel synthesis without an eavesdropper.
AB - We investigate channel synthesis in a cascade setting where nature provides an iid sequence Xn at node 1. Node 1 can send a message at rate R1 to node 2 and node 2 can send a message at rate R2 to node 3. Additionally, all 3 nodes share bits of common randomness at rate R 0. We want to generate sequences Y n and Zn along nodes in the cascade such that (Xn, Y n, Z n) appears to be appropriately correlated and iid even to an eavesdropper who is cognizant of the messages being sent. We characterize the optimal tradeoff between the amount of common randomness used and the required rates of communication. We also solve the problem for arbitrarily long cascades and provide an inner bound for cascade channel synthesis without an eavesdropper.
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U2 - 10.1109/ISIT.2013.6620767
DO - 10.1109/ISIT.2013.6620767
M3 - Conference contribution
AN - SCOPUS:84890328416
SN - 9781479904464
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2955
EP - 2959
BT - 2013 IEEE International Symposium on Information Theory, ISIT 2013
T2 - 2013 IEEE International Symposium on Information Theory, ISIT 2013
Y2 - 7 July 2013 through 12 July 2013
ER -