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Strong authentication in an interconnected wireless environment continues to be an important, but sometimes elusive goal. Research in physical-layer authentication using channel features holds promise as a technique to improve network…

Signal Processing · Electrical Eng. & Systems 2020-09-01 Ken St. Germain , Frank Kragh

The physical layer authentication (PLA) is a promising technology which can enhance the access security of a massive number of devices in the near future. In this paper, we propose a reconfigurable intelligent surface (RIS)-assisted PLA…

Cryptography and Security · Computer Science 2024-03-08 Ning Gao , Shuchen Meng , Cen Li , Shengguo Meng , Wankai Tang , Shi Jin , Michail Matthaiou

In this paper, we investigate multi-message authentication to combat adversaries with infinite computational capacity. An authentication framework over a wiretap channel $(W_1,W_2)$ is proposed to achieve information-theoretic security with…

Cryptography and Security · Computer Science 2018-08-19 Dajiang Chen , Ning Zhang , Nan Cheng , Kuan Zhang , Kan Yang , Zhiguang Qin , Xuemin Shen

Conventionally, secrecy is achieved using cryptographic techniques beyond the physical layer. Recent studies raise the interest of performing encryption within the physical layer by exploiting some unique features of the physical wireless…

Cryptography and Security · Computer Science 2018-08-19 Suzhi Bi , Xiaojun Yuan , Ying Jun Zhang

The model of wiretap channel (WTC) is important as it constitutes the essence of physical layer security (PLS). Wiretap channel with noiseless feedback (WTC-NF) is especially interesting as it shows what can be done when a private feedback…

Information Theory · Computer Science 2018-04-26 Bin Dai

Physical-layer characteristics, such as channel state information (CSI) and transmitter noise induced by hardware impairments, are often uniquely associated with a transmitter. This paper investigates transmitter anonymity at the physical…

Signal Processing · Electrical Eng. & Systems 2026-02-25 Yu Li , Milad Tatar Mamaghani , Xiangyun Zhou , Nan Yang

We consider the problem of covert communication over a state-dependent channel, where the transmitter has causal or noncausal knowledge of the channel states. Here, "covert" means that a warden on the channel should observe similar…

Information Theory · Computer Science 2017-08-09 Si-Hyeon Lee , Ligong Wang , Ashish Khisti , Gregory W. Wornell

With the rapid advancement of 6G, identity authentication has become increasingly critical for ensuring wireless security. The lightweight and keyless Physical Layer Authentication (PLA) is regarded as an instrumental security measure in…

Signal Processing · Electrical Eng. & Systems 2026-03-24 Xiqi Cheng , Rui Meng , Xiaodong Xu , Haixiao Gao , Ping Zhang , Dusit Niyato

In the era of big data, anonymity is recognized as an important attribute in privacy-preserving communications. The existing anonymous authentication and routing are applied at higher layers of networks, ignoring physical layer (PHY) also…

Information Theory · Computer Science 2020-10-20 Zhongxiang Wei , Fan Liu , Christos Masouros , H. Vincent Poor

In this paper, we study the receiver performance with physical layer security in a Poisson field of interferers. We compare the performance in two deployment scenarios: (i) the receiver is located at the corner of a quadrant, (ii) the…

Information Theory · Computer Science 2020-09-01 Konstantinos Koufos , Carl P. Dettmann

In this paper, we investigate the secure coding issue for a wiretap channel model with fixed main channel and varying wiretap channel, by assuming that legitimate parties can obtain the wiretapping channel state information (CSI) after some…

Information Theory · Computer Science 2020-01-22 Yizhi Zhao , Hongmei Chi

A large spectrum of technologies are collectively dubbed as physical layer security (PLS), ranging from wiretap coding, secret key generation (SKG), authentication using physical unclonable functions (PUFs), localization / RF…

Cryptography and Security · Computer Science 2022-10-25 Miroslav Mitev , Thuy M. Pham , Arsenia Chorti , Andre Noll Barreto , Gerhard Fettweis

Intelligent transportation systems increasingly depend on wireless communication for broadcasting traffic messages and facilitating real-time vehicular communication. In this context, message authentication is crucial for establishing…

Signal Processing · Electrical Eng. & Systems 2025-10-09 Mahmoud A. Shawky , Syed Tariq Shah , Ahmed G. Abdellatif , Muhammad Ali Imran , Qammer H. Abbasi , Shuja Ansari , Ahmad Taha

The physical-layer secret key generation has emerged as a promising solution for establishing cryptographic keys by leveraging reciprocal and time-varying wireless channels. However, existing approaches suffer from low key generation rates…

Cryptography and Security · Computer Science 2021-12-07 Guyue Li , Haiyu Yang , Junqing Zhang , Hongbo Liu , Aiqun Hu

Physical layer approaches for generating secret encryption keys for wireless systems using channel information have attracted increased interest from researchers in recent years. This paper presents a new approach for calculating…

Information Theory · Computer Science 2023-07-11 John A. Snoap

Data at the physical layer transmits via media such as copper cable, fiber optic, or wireless. Physical attack vectors exist that challenge data confidentiality and availability. Protocols and encryption standards help obfuscate but often…

Cryptography and Security · Computer Science 2026-01-27 Alon Hillel-Tuch

Physical layer authentication (PLA) is the process of claiming identity of a node based on its physical layer characteristics such as channel fading or hardware imperfections. In this work, we propose a novel PLA method for the…

Signal Processing · Electrical Eng. & Systems 2022-02-18 Ozan Alp Topal , Gunes Karabulut Kurt

Leakage of information in power line communication networks is a threat to privacy and security both in smart grids and in-home applications. A way to enhance security is to encode the transmitted information with a secret key. Relying on…

Cryptography and Security · Computer Science 2020-04-14 Federico Passerini , Andrea M. Tonello

Wireless covert channels promise to exfiltrate information with high bandwidth by circumventing traditional access control mechanisms. Ideally, they are only accessible by the intended recipient and---for regular system…

Networking and Internet Architecture · Computer Science 2015-05-06 Jiska Classen , Matthias Schulz , Matthias Hollick

Physical layer security which safeguards data confidentiality based on the information-theoretic approaches has received significant research interest recently. The key idea behind physical layer security is to utilize the intrinsic…

Information Theory · Computer Science 2018-01-17 Yongpeng Wu , Ashish Khisti , Chengshan Xiao , Giuseppe Caire , Kai-Kit Wong , Xiqi Gao