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We propose and analyze secret key generation using intelligent reflecting surface (IRS) assisted wireless communication networks. To this end, we first formulate the minimum achievable secret key capacity for an IRS acting as a passive…

Signal Processing · Electrical Eng. & Systems 2021-03-10 Zijie Ji , Phee Lep Yeoh , Deyou Zhang , Gaojie Chen , Yan Zhang , Zunwen He , Hao Yin , Yonghui Li

Physical-layer key generation (PKG) can generate symmetric keys between two communication ends based on the reciprocal uplink and downlink channels. By smartly reconfiguring the radio signal propagation, intelligent reflecting surface (IRS)…

Information Theory · Computer Science 2021-05-04 You Chen , Guyue Li , Cunhua Pan , Lei Hu , Aiqun Hu

Physical layer key generation (PLKG) can significantly enhance the security of classic encryption schemes by enabling them to change their secret keys significantly faster and more efficient. However, due to the reliance of PLKG techniques…

Signal Processing · Electrical Eng. & Systems 2022-12-06 Vahid Shahiri , Hamid Behroozi , Ali Kuhestani

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

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

In this paper, we introduce an intelligent reflecting surface (IRS) to provide a programmable wireless environment for physical layer security. By adjusting the reflecting coefficients, the IRS can change the attenuation and scattering of…

Signal Processing · Electrical Eng. & Systems 2019-06-21 Jie Chen , Ying-Chang Liang , Yiyang Pei , Huayan Guo

In this paper, we propose a novel encrypted data transmission scheme using an intelligent reflecting surface (IRS) to generate secret keys in wireless communication networks. We show that perfectly secure one-time pad (OTP) communications…

Information Theory · Computer Science 2021-03-10 Zijie Ji , Phee Lep Yeoh , Gaojie Chen , Cunhua Pan , Yan Zhang , Zunwen He , Hao Yin , Yonghui Li

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) 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

Physical-layer key generation (PKG) based on wireless channels is a lightweight technique to establish secure keys between legitimate communication nodes. Recently, intelligent reflecting surfaces (IRSs) have been leveraged to enhance the…

Signal Processing · Electrical Eng. & Systems 2023-01-20 Chen Chen , Junqing Zhang , Tianyu Lu , Magnus Sandell , Liquan Chen

Physical-layer key generation (PKG) based on wireless channels is a lightweight technique to establish secure keys between legitimate communication nodes. Recently, intelligent reflecting surfaces (IRSs) have been leveraged to enhance the…

Signal Processing · Electrical Eng. & Systems 2023-05-02 Chen Chen , Junqing Zhang , Tianyu Lu , Magnus Sandell , Liquan Chen

In this paper, we propose to utilize intelligent reflecting surfaces (IRSs) for enhancing the physical layer security of wireless communications systems. In particular, an IRS-assisted secure wireless system is considered, where a…

Information Theory · Computer Science 2020-02-26 Xianghao Yu , Dongfang Xu , Robert Schober

Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal prorogation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capable…

Information Theory · Computer Science 2020-07-08 Qingqing Wu , Shuowen Zhang , Beixiong Zheng , Changsheng You , Rui Zhang

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

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

Intelligent reflection surface (IRS) is emerging as a promising technique for future wireless communications. Considering its excellent capability in customizing the channel conditions via energy-focusing and energy-nulling, it is an ideal…

Information Theory · Computer Science 2021-08-31 Shihao Yan , Xiaobo Zhou , Derrick Wing Kwan Ng , Jinhong Yuan , Naofal Al-Dhahir

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

Reconfigurable Intelligent Surface (RIS) is a new paradigm that enables the reconfiguration of the wireless environment. Based on this feature, RIS can be employed to facilitate Physical-layer Key Generation (PKG). However, this technique…

Information Theory · Computer Science 2021-08-13 Lei Hu , Guyue Li , Hongyi Luo , Aiqun Hu

The employment of intelligent reflecting surfaces (IRSs) is a potential and promising solution to increase the spectral and energy efficiency of wireless communication networks. Despite their many advantages, IRS-aided communications have…

Information Theory · Computer Science 2021-03-26 Constantinos Psomas , Ioannis Krikidis
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