Implementation of Physical Layer Key Distribution using Software Defined Radios

Defence Science Journal

A. Thangaraj¹  R. Vaidyanathaswami¹  S. Kambala¹ 

[1] Indian Institute of Technology Madras, Chennai

关键词: Physical layer security;    wiretap channel;    key exchange protocols;    software defined radio;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

It was well known from Shannon’s days that characteristics of the physical channel like attenuation, fadingand noise can impair reliable communication. But it was more recently that the beneficial side effects of channelcharacteristics in ensuring secret communication started getting attention. Studies have been made to quantify theamount of secrecy that can be reaped by combining channel coding with security protocols. The Wiretap channelproposed by Wyner is arguably one of the oldest models of physical layer security protocols. In this paper, wepresent a brief tutorial introduction to the Wiretap channel, followed by an application of the physical layer modelto a class of Key Distribution protocols. We present results from an implementation of key distribution protocolsusing Software Defined Radio tools along with physical RF hardware peripherals. We believe this approach is muchmore tangible and informative than computer based simulation studies. Defence Science Journal, 2013, 63(1), pp.6-14 ,  DOI:http://dx.doi.org/10.14429/dsj. 63.3758

【 授权许可】

Unknown