Threat on Physical Layer Security: Side Channel vs. Wiretap Channel

2013 ◽  
Author(s):  
Peng Luo ◽  
Huiyun Li ◽  
Guoqing Xu ◽  
Lei Peng
Keyword(s):  
Physical Layer Security ◽  
Physical Layer ◽  
Side Channel ◽  
Wiretap Channel

scholarly journals Impact of The Correlation Between Channel Input And Side Information On Physical Layer Security Performances of Wireless Wiretap Channel

2021 ◽  
Author(s):  
Saeid Pakravan ◽  
Ghosheh Abed Hodtani
Keyword(s):  
Physical Layer Security ◽  
Side Information ◽  
Physical Layer ◽  
Secrecy Outage Probability ◽  
Capacity Region ◽  
Wiretap Channel ◽  
Channel Input ◽  
Average Secrecy Capacity ◽  
Secrecy Outage ◽  
The Impact

Abstract In this paper, a discrete memoryless wiretap channel with non-causal side information known at the encoder is considered. We (i) characterize capacity region for the Gaussian version of this channel by considering correlation between channel input and side information available at the transmitter; (ii) analyze the impact of correlation on the performance of physical layer security in a Rayleigh fading wiretap channel by deriving closed-form expressions on the average secrecy capacity (ASC) and secrecy outage probability (SOP). Further, to more show the impact of side information, asymptotic behavior of SOP is studied. Numerical evaluation of theoretical results is done finally.

Enhancement of reliability and security in spatial diversity FSO-CDMA wiretap channel

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jianjia Zhang ◽  
Bing Wu ◽  
Fang Peng ◽  
Zihua Zheng ◽  
Jianhua Ji
Keyword(s):  
Free Space ◽  
Physical Layer Security ◽  
Multiple Access ◽  
Multiple Access Interference ◽  
Spatial Diversity ◽  
Physical Layer ◽  
Closed Form Expression ◽  
Free Space Optical ◽  
Wiretap Channel ◽  
Code Division Multiple

AbstractDue to atmospheric turbulence, the reliability and security of free space optical (FSO) communication will be affected seriously. In this paper, we propose a novel scheme of quasisynchronous spatial diversity free-space optical code division multiple access (FSO-CDMA) wiretap channel based on gamma-gamma distribution. Considering multiple access interference, shot noise, thermal noise and background noise, performances of bit error rate (BER) and physical-layer security are analyzed theoretically. The physical-layer security of quasisynchronous spatial diversity FSO-CDMA wiretap channel is evaluated by secrecy capacity and interception probability. Closed-form expression of interception probability is obtained. In order to compare the performances between conventional spatial diversity FSO-CDMA and the proposed scheme, Optisystem simulation is carried out. The results indicate that quasisynchronous spatial diversity FSO-CDMA scheme can improve the reliability and physical-layer security simultaneously.

scholarly journals Implications of Coding Layers on Physical-Layer Security: A Secrecy Benefit Approach

Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 755 ◽  
Author(s):  
Harrison ◽  
Beard ◽  
Dye ◽  
Holmes ◽  
Nelson ◽  
...  
Keyword(s):  
Physical Layer Security ◽  
Error Control ◽  
Physical Layer ◽  
Error Control Coding ◽  
Wiretap Channel ◽  
New Approach ◽  
Information Theoretic ◽  
Information Theoretic Security ◽  
Coset Coding ◽  
Pros And Cons

In this work, we consider the pros and cons of using various layers of keyless coding toachieve secure and reliable communication over the Gaussian wiretap channel. We define a newapproach to information theoretic security, called practical secrecy and the secrecy benefit, to be usedover real-world channels and finite blocklength instantiations of coding layers, and use this newapproach to show the fundamental reliability and security implications of several coding mechanismsthat have traditionally been used for physical-layer security. We perform a systematic/structuredanalysis of the effect of error-control coding, scrambling, interleaving, and coset coding, as codinglayers of a secrecy system. Using this new approach, scrambling and interleaving are shown to be ofno effect in increasing information theoretic security, even when measuring the effect at the output ofthe eavesdropper’s decoder. Error control coding is shown to present a trade-off between secrecyand reliability that is dictated by the chosen code and the signal-to-noise ratios at the legitimate andeavesdropping receivers. Finally, the benefits of secrecy coding are highlighted, and it is shown howone can shape the secrecy benefit according to system specifications using combinations of differentlayers of coding to achieve both reliable and secure throughput.

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