New Physical Layer Key Generation Dimensions: Subcarrier Indices/Positions-Based Key Generation

In this letter, novel algorithms for secret key generation from the wireless channel in multi-carrier systems are proposed for ensuring the confidentiality and authentication in wireless communication systems. The novelty of the proposed algorithms lies in the generation of random secret bits not just from the magnitudes of orthogonal frequency division multiplexing (OFDM) subchannels as it has conventionally been done in the literature, but also from the indices/positions of the subchannels corresponding to highest gains. Thus, the proposed algorithms provide additional dimensions for enhancing overall key rates. The efficiency of the proposed algorithms is evaluated in terms of key mismatch rate (KMR) and key generation rate (KGR). Simulation results showed that the proposed algorithms can enhance the overall performance of physical layer key-based algorithms by providing extra dimensions for secret key generation.

[1]  Junqing Zhang,et al.  Key Generation From Wireless Channels: A Review , 2016, IEEE Access.

[2]  Sheng Chen,et al.  Novel Index Modulation Techniques: A Survey , 2019, IEEE Communications Surveys & Tutorials.

[3]  Haji M. Furqan,et al.  Secret key generation using channel quantization with SVD for reciprocal MIMO channels , 2016, 2016 International Symposium on Wireless Communication Systems (ISWCS).

[4]  Jehad M. Hamamreh.  Improving the Physical Layer Security of IoT-5G Systems , 2019 .

[5]  Junqing Zhang,et al.  Secure key generation from OFDM subcarriers' channel responses , 2014, 2014 IEEE Globecom Workshops (GC Wkshps).

[6]  Yang Wang,et al.  Fast and practical secret key extraction by exploiting channel response , 2013, 2013 Proceedings IEEE INFOCOM.

[7]  Haji M. Furqan,et al.  Classifications and Applications of Physical Layer Security Techniques for Confidentiality: A Comprehensive Survey , 2019, IEEE Communications Surveys & Tutorials.

[8]  Ning Wang,et al.  Physical Layer Key Generation in 5G Wireless Networks , 2019, IEEE Wireless Communications.

[9]  Jehad M. Hamamreh,et al.  Secure Orthogonal Transform Division Multiplexing (OTDM) Waveform for 5G and Beyond , 2017, IEEE Communications Letters.

[10]  Hai Su,et al.  Fast and scalable secret key generation exploiting channel phase randomness in wireless networks , 2011, 2011 Proceedings IEEE INFOCOM.

[11]  Elaine B. Barker,et al.  A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Applications , 2000 .

[12]  Stark C. Draper,et al.  Exploiting Channel Diversity in Secret Key Generation From Multipath Fading Randomness , 2011, IEEE Transactions on Information Forensics and Security.

[13]  Chen-Mou Cheng,et al.  Practical Physical Layer Security Schemes for MIMO-OFDM Systems Using Precoding Matrix Indices , 2013, IEEE Journal on Selected Areas in Communications.

[14]  Jehad M. Hamamreh,et al.  OFDM-Subcarrier Index Selection for Enhancing Security and Reliability of 5G URLLC Services , 2017, IEEE Access.

[15]  Kai Zeng,et al.  Physical layer key generation in wireless networks: challenges and opportunities , 2015, IEEE Communications Magazine.