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Reconfigurable intelligent surface (RIS) is a disruptive technology to enhance the performance of physical-layer key generation (PKG) thanks to its ability to smartly customize the radio environments. Existing RIS-assisted PKG methods are…

Information Theory · Computer Science 2022-11-08 Lei Hu , Guyue Li , Xuewen Qian , Aiqun Hu , Derrick Wing Kwan Ng

Channel Reciprocity-based Key Generation (CRKG) exploits reciprocal channel randomness to establish shared secret keys between wireless terminals. This new security technique is expected to complement existing cryptographic techniques for…

Information Theory · Computer Science 2024-04-11 Guyue Li , Paul Staat , Haoyu Li , Markus Heinrichs , Christian Zenger , Rainer Kronberger , Harald Elders-Boll , Christof Paar , Aiqun Hu

Reconfigurable intelligent surfaces (RIS) have the ability to alter the wireless environment by making changes in the impinging signal. While RIS has been extensively studied for enhancing wireless communications, its potential for…

Signal Processing · Electrical Eng. & Systems 2026-04-28 Vahid Shahiri , Guyue Li , Hamid Behroozi

Physical layer key generation (PKG) is a promising means to provide on-the-fly shared secret keys by exploiting the intrinsic randomness of the radio channel. However, the performance of PKG is highly dependent on the propagation…

Information Theory · Computer Science 2022-04-08 Guyue Li , Lei Hu , Paul Staat , Harald Elders-Boll , Christian Zenger , Christof Paar , Aiqun Hu

Secret key generation in physical layer security exploits the unpredictable random nature of wireless channels. The millimeter-wave (mmWave) channels have limited multipath and channel randomness in static environments. In this paper, for…

Signal Processing · Electrical Eng. & Systems 2022-08-09 Shubo Yang , Han Han , Yihong Liu , Weisi Guo , Zhibo Pang , Lei Zhang

Physical layer security (PLS) is superior to classical cryptography techniques due to its notion of perfect secrecy and independence to an eavesdropper's computational power. One form of PLS arises when Alice and Bob (the legitimate users)…

Signal Processing · Electrical Eng. & Systems 2023-08-10 Hibatallah Alwazani , Anas Chaaban

A reconfigurable intelligent surface (RIS) is commonly made of low-cost passive and reflective meta-materials with excellent beam steering capabilities. It is applied to enhance wireless communication systems as a customizable signal…

Signal Processing · Electrical Eng. & Systems 2024-07-16 Kun Chen-Hu , Petar Popovski

Physical-layer key generation (PKG) exploits the reciprocity and randomness of wireless channels to generate a symmetric key between two legitimate communication ends. However, in multi-cell systems, PKG suffers from severe pilot…

Information Theory · Computer Science 2023-03-23 Lei Hu , Chen Sun , Guyue Li , Aiqun Hu , Derrick Wing Kwan Ng

Physical layer key generation is a promising candidate for cryptographic key establishment between two wireless communication parties. It offers information-theoretic security and is an attractive alternative to public-key techniques. Here,…

Cryptography and Security · Computer Science 2021-03-09 Paul Staat , Harald Elders-Boll , Markus Heinrichs , Rainer Kronberger , Christian Zenger , Christof Paar

Reconfigurable intelligent surface (RIS) is a promising technique to enhance the performance of physical-layer key generation (PKG) due to its ability to smartly customize the radio environments. Existing RIS-assisted PKG methods are mainly…

Information Theory · Computer Science 2022-07-26 Lei Hu , Guyue Li , Xuewen Qian , Derrick Wing Kwan Ng , Aiqun Hu

Key generation is a promising technique to establish symmetric keys between resource-constrained legitimate users. However, key generation suffers from low secret key rate (SKR) in harsh environments where channel randomness is limited. To…

Information Theory · Computer Science 2022-08-02 Tianyu Lu , Liquan Chen , Junqing Zhang , Chen Chen , Aiqun Hu

Key generation, a pillar in physical-layer security (PLS), is the process of the exchanging signals from two legitimate users (Alice and Bob) to extract a common key from the random, common channels. The drawback of extracting keys from…

Information Theory · Computer Science 2024-09-25 Hibatallah Alwazani , Anas Chaaban

Reconfigurable Intelligent Surface (RIS) assisted physical layer key generation has shown great potential to secure wireless communications by smartly controlling signals such as phase and amplitude. However, previous studies mainly focus…

Signal Processing · Electrical Eng. & Systems 2023-10-17 Ningya Xu , Guoshun Nan , Xiaofeng Tao

RIS is one of the significant technological advancements that will mark next-generation wireless. RIS technology also opens up the possibility of new security threats, since the reflection of impinging signals can be used for malicious…

Cryptography and Security · Computer Science 2024-10-28 Jacek Kibilda , Nurul H. Mahmood , André Gomes , Matti Latva-aho , Luiz A. DaSilva

Reconfigurable intelligent surfaces (RISs) represent a radical new technology that can shape the radio wave propagation in wireless communication systems and offers a great variety of possible performance and implementation gains. Motivated…

Information Theory · Computer Science 2021-09-06 Nemanja Stefan Perović , Le-Nam Tran , Marco Di Renzo , Mark F. Flanagan

Reconfigurable intelligent surfaces (RISs) represent a promising candidate for sixth-generation (6G) wireless networks, as the RIS technology provides a new solution to control the propagation channel in order to improve the efficiency of a…

Information Theory · Computer Science 2022-08-15 Mohamad H. Dinan , Nemanja Stefan Perovic , Mark F. Flanagan

Transmission through reconfigurable intelligent surfaces (RISs), which control the reflection/scattering characteristics of incident waves in a deliberate manner to enhance the signal quality at the receiver, appears as a promising…

Information Theory · Computer Science 2020-01-30 Ertugrul Basar

The concept of reconfigurable intelligent surface (RIS)-assisted transmission, where phases of reflected signals are adjusted in an effective arrangement, has been recently put forward as a promising solution for 6G and beyond networks.…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Ayse E. Canbilen , Ertugrul Basar , Salama S. Ikki

Physical layer key generation (PLKG) is a promising technology to obtain symmetric keys between a pair of wireless communication users in a plug-and-play manner. The shared entropy source almost entirely comes from the intrinsic randomness…

Cryptography and Security · Computer Science 2023-07-04 Ning Gao , Yu Han , Nannan Li , Shi Jin , Michail Matthaiou

In this letter, we study an attack that leverages a reconfigurable intelligent surface (RIS) to induce harmful interference toward multiple users in massive multiple-input multiple-output (mMIMO) systems during the data transmission phase.…

Signal Processing · Electrical Eng. & Systems 2024-01-17 Arthur Sousa de Sena , Jacek Kibilda , Nurul Huda Mahmood , André Gomes , Matti Latva-aho
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