شماره ركورد كنفرانس :
4058
عنوان مقاله :
New Techniques for Localization Based Information Theoretic Secret Key Agreement
پديدآورندگان :
Kazempour Narges kazempour narges@ee.sharif.edu Information Systems and Security Lab (ISSL) Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran , Mirmohseni Mahtab mirmohseni@sharif.edu Information Systems and Security Lab (ISSL) Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran , Aref Mohammad Reza aref@sharif.edu Information Systems and Security Lab (ISSL) Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
كليدواژه :
multi , directional antenna , information theoretic secret key agreement , artificial noise
عنوان كنفرانس :
چهاردهمين كنفرانس بين المللي انجمن رمز ايران
چكيده فارسي :
We consider a source model for information theoretic
secret key agreement based on the distance among the nodes,
in a basic system consisting of two legitimate users and an
eavesdropper. The legitimate nodes try to agree on a reliable
and secure key based on their noisy observation of distance
between them. We propose two methods to enhance system
utility: 1) Artificial Noise Forwarding (ANF), 2) transmission in
different beam directions (multi-antenna transmission). In the first
method artificial noise is used to worsen eavesdropper’s distance
estimation and in the second method beacon signals are sent in
different directions and the virtual distances in different beam
directions are used as the randomness sources. We show that if
eavesdropper is not equipped with multi-directional antenna, then
ANF is a useful method while in the case of users equipped with
multi-directional antenna, transmitting in different directions is a
suitable way to increase the secret key rate.
