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The Secret Key-Private Key Capacity Region for Three Terminals

Chunxuan Ye·Prakash Narayan
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Abstract

We consider a model for secrecy generation, with three terminals, by means of public interterminal communication, and examine the problem of characterizing all the rates at which all three terminals can generate a ``secret key,'' and -- simultaneously -- two designated terminals can generate a ``private key'' which is effectively concealed from the remaining terminal; both keys are also concealed from an eavesdropper that observes the public communication. Inner and outer bounds for the ``secret key--private key capacity region'' are derived. Under a certain special condition, these bounds coincide to yield the (exact) secret key--private key capacity region.

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Chunxuan Ye, Prakash Narayan. 2005-11-12. The Secret Key-Private Key Capacity Region for Three Terminals. https://arxiv.org/abs/cs/0511047

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