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    On the secrecy capacity of 3-receiver Broadcast Channel with causal states and conferencing

    , Article IEEE International Symposium on Information Theory - Proceedings ; 2012 , Pages 1167-1171 ; 9781467325790 (ISBN) Salehkalaibar, S ; Aref, M. R ; Sharif University of Technology
    IEEE  2012
    Abstract
    We investigate the secrecy capacity region of 2-receiver, 1-eavesdropper Broadcast Channel (BC) with two causal states and conferencing decoders. The encoder sends two messages, one of them for both legitimate receivers and the other one for the first legitimate receiver. It keeps these messages secret from the eavesdropper. Each state is causally available at the corresponding receiver, while both states are known causally at the encoder. Each receiver wishes to send the state which is not available at the other receiver, through a noiseless link with limited capacity. We find an inner bound on the secrecy capacity region of this channel. The achievability scheme employs block Markov coding...