The Gaussian wiretap channel with correlated sources at the terminals: Secret communication and key generation

This paper considers the setup of Alice, Bob and Eve sharing a Gaussian Broadcast channel, and correlated Gaussian sources, assuming these are independent of the channel components. Both secret key generation and secret message transmission are considered. A closed form expression is presented characterizing the optimal trade-off between the secret key and the secret message rates. A few known results are shown to be accepted as special cases.

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