Security is one of the key requirements for the future acceptance of IoT networks. Existing security solutions are based on data encryption using secret keys, which require a trustworthy and complex architecture for their distribution.
As an alternative to conventional key distribution, the encryption keys can be generated using the unique physical layer characteristics of the wireless communication. The radio wave propagation between every “pair” (transmitter and receiver) is unique and reciprocal. Its properties cannot be obtained by a third-party eavesdropper at another location. That is, the signal will suffer many reflections between the transmitter and the receiver. The eavesdropper will also observe the signal, but, since the distances are different, he will experience these reflections differently from the receiver.
Hence, the radio channel is suitable as a random secret source of information to generate and exchange a security key.
This concept is one of the possibilities of what is called Physical Layer Security.
Stefano Tomasin, Hongliang Zhang, Arsenia Chorti, Vincent Poor, Challenge-Response Physical Layer Authentication Over Partially Controllable Channels, IEEE Communications Magazine, 2022, Download PDF
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Miroslav Mitev, André Barreto, Minh Thuy Pham, Maximilian Matthé, Gerhard Fettweis, Filterbank Secret Key Generation Rates in Multipath Channels, IEEE Global Communications Conference (Globecom) 2022, 2022, Download PDF
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Miroslav Mitev, Arsenia Chorti, Mahdi Shakiba-Herfeh, Martin Reed, Sajjad Baghaee, A Physical Layer, Zero-round-trip-time, Multi-factor Authentication Protocol, IEEE Access, 2022
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Miroslav Mitev, André Barreto, Minh Thuy Pham, Gerhard Fettweis, Secret Key Generation Rates over Frequency Selective Channels, IEEE Vehicular Technology Conference (VTC-Spring), 2022, Download PDF
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Arsenia Chorti, André Barreto, Stefan Köpsell, Marco Zoli, Marwa Chafii, Philippe Sehier, Gerhard Fettweis, Vincent Poor, Context-Aware Security for 6G Wireless: The Role of Physical Layer Security, IEEE Communications Standards Magazine, 2022
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Minh Thuy Pham, André Barreto, Miroslav Mitev, Maximilian Matthé, Gerhard Fettweis, Secure Communications in Line-of-Sight Scenarios by Rotation-based Secret Key Generation, IEEE International Conference on Communications (ICC), 2022, Download PDF
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Simone del Prete, Franco Fuschini, Marina Barbirolli, Marco Zoli, André Barreto, A Study on Physical Layer Security Through Ray Tracing Simulations, European Conference on Antennas and Propagation (EUCAP), 2022
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Alessandro Santorsola, Marco Zoli, André Barreto, Vincenzo Petruzzelli, Giovanna Calò, Effect of Radio Channel and Antennas on Physical-Layer-Security Key Exchange, IEEE Access, 2021, Download PDF
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Miroslav Mitev, Arsenia Chorti, Elena Belmega, Vincent Poor, Protecting physical layer secret key generation from active attacks, MDPI Entropy, 2021
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Marco Zoli, Miroslav Mitev, André Barreto, Gerhard Fettweis, Estimation of the Secret Key Rate in Wideband Wireless Physical-Layer-Security, International Symposium on Wireless Communication Systems (ISWCS), 2021, Download PDF
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Marco Zoli, André Barreto, Gerhard Fettweis, Investigating the eavesdropper attack in physical layer security wireless key generation: a simulation case study, IEEE Vehicular Technology Conference (VTC-Spring), 2021
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Saumya Dwivedi, Marco Zoli, André Barreto, Padmanava Sen, Gerhard Fettweis, Secure Joint Communications and Sensing using Chirp Modulation, 6G Wireless Summit (6G SUMMIT), 2020, Download PDF
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Marco Zoli, André Barreto, Stefan Köpsell, Padmanava Sen, Gerhard Fettweis, Physical-Layer-Security Box: a concept for time-frequency channel-reciprocity key generation, EURASIP Journal on Wireless Communications and Networking, 2020, Download PDF
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