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The Secret Key Capacity of a Class of Noisy Channels with Correlated Sources
KTH, School of Electrical Engineering and Computer Science (EECS), Information Science and Engineering.ORCID iD: 0000-0002-8974-6591
2019 (English)In: Entropy, ISSN 1099-4300, E-ISSN 1099-4300, Vol. 21, no 8, article id 732Article in journal (Refereed) Published
Abstract [en]

This paper investigates the problem of secret key generation over a wiretap channel when the terminals observe correlated sources. These sources are independent of the main channel and the users overhear them before the transmission takes place. A novel outer bound is proposed and, employing a previously reported inner bound, the secret key capacity is derived under certain less-noisy conditions on the channel or source components. This result improves upon the existing literature where the more stringent condition of degradedness is required. Furthermore, numerical evaluation of the achievable scheme and previously reported results for a binary model are presented; a comparison of the numerical bounds provides insights on the benefit of the chosen scheme.

Place, publisher, year, edition, pages
MDPI, 2019. Vol. 21, no 8, article id 732
Keywords [en]
Information-Theoretic Security, Secret Key Agreement, Secret Key Capacity, Wiretap Channel, Correlated Sources
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-258060DOI: 10.3390/e21080732ISI: 000483732700071Scopus ID: 2-s2.0-85070436578OAI: oai:DiVA.org:kth-258060DiVA, id: diva2:1349713
Note

QC 20190916

Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-27Bibliographically approved

Open Access in DiVA

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Publisher's full textScopushttps://doaj.org/article/e0f029a8acd9463a8329bc362fe5f6f2

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