Open AccessSecret Key Generation Schemes for Physical Layer Security
Author(s) -
Sathish Kumar M,
R. Ramanathan,
M Jayakumar,
Devendra Kumar Yadav
Publication year - 2021
Publication title -
defence science journal/defence science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.198
H-Index - 32
eISSN - 0976-464X
pISSN - 0011-748X
DOI - 10.14429/dsj.71.15403
Subject(s) - key generation , physical layer , key (lock) , computer science , wireless , entropy (arrow of time) , encoding (memory) , channel (broadcasting) , computer security , computer network , telecommunications , cryptography , artificial intelligence , physics , quantum mechanics
Physical layer security (PLS) has evolved to be a pivotal technique in ensuring secure wireless communication. This paper presents a comprehensive analysis of the recent developments in physical layer secret key generation (PLSKG). The principle, procedure, techniques and performance metricesare investigated for PLSKG between a pair of users (PSKG) and for a group of users (GSKG). In this paper, a detailed comparison of the various parameters and techniques employed in different stages of key generation such as, channel probing, quantisation, encoding, information reconciliation (IR) and privacy amplification (PA) are provided. Apart from this, a comparison of bit disagreement rate, bit generation rate and approximate entropy is also presented. The work identifies PSKG and GSKG schemes which are practically realizable and also provides a discussion on the test bed employed for realising various PLSKG schemes. Moreover, a discussion on the research challenges in the area of PLSKG is also provided for future research.