Secure Communication in Stochastic Wireless Networks - Part II: Maximum Rate and Collusion

• Type: Article in International Scientific Journal
• Date: 2012

Authors

P. Pinto (Author) Other; J. Barros (Author) FEUP; M. Win (Author) FEUP

Journal

Title: IEEE Transactions on Information Forensics and Security

Vol. 7 No. 1

Pages: 139-147

ISSN: 1556-6013

Publisher: IEEE

Indexing

ISI Web of Science

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

DOI: 10.1109/TIFS.2011.2165947 

Abstract (EN): In Part I of this paper, we introduced the intrinsically secure communications graph (iS-graph)-a random graph which describes the connections that can be established with strong secrecy over a large-scale network, in the presence of eavesdroppers. We focused on the local connectivity of the iS-graph, and proposed techniques to improve it. In this second part, we characterize the maximum secrecy rate (MSR) that can be achieved between a node and its neighbors. We then consider the scenario where the eavesdroppers are allowed to collude, i.e., exchange and combine information. We quantify exactly how eavesdropper collusion degrades the secrecy properties of the network, in comparison to a noncolluding scenario. Our analysis helps clarify how the presence of eavesdroppers can jeopardize the success of wireless physical-layer security.

Language: English

Type (Professor's evaluation): Scientific