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arXiv · 1103.5197

A New Secret key Agreement Scheme in a Four-Terminal Network

Parisa Babaheidarian·Somayeh Salimi·Mohammad Reza Aref
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Abstract

A new scenario for generating a secret key and two private keys among three Terminals in the presence of an external eavesdropper is considered. Terminals 1, 2 and 3 intend to share a common secret key concealed from the external eavesdropper (Terminal 4) and simultaneously, each of Terminals 1 and 2 intends to share a private key with Terminal 3 while keeping it concealed from each other and from Terminal 4. All four Terminals observe i.i.d. outputs of correlated sources and there is a public channel from Terminal 3 to Terminals 1 and 2. An inner bound of the "secret key-private keys capacity region" is derived and the single letter capacity regions are obtained for some special cases.

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Parisa Babaheidarian, Somayeh Salimi, Mohammad Reza Aref. 2011-03-27. A New Secret key Agreement Scheme in a Four-Terminal Network. https://arxiv.org/abs/1103.5197

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