A New Secret key Agreement Scheme in a Four-Terminal Network
Cryptography and Security
2011-03-29 v1 Information Theory
math.IT
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.
Keywords
Cite
@article{arxiv.1103.5197,
title = {A New Secret key Agreement Scheme in a Four-Terminal Network},
author = {Parisa Babaheidarian and Somayeh Salimi and Mohammad Reza Aref},
journal= {arXiv preprint arXiv:1103.5197},
year = {2011}
}
Comments
6 pages, 3 figures