Keshavarzi, Mohammadreza, Zayyani, Hadi, Kuhestani, Ali, Ahmadi, Hossein. (1403). Channel Phase Based Secret Key Generation: Untrusted Relaying or Not?. نشریه مهندسی عمران امیرکبیر, 56(1), 117-126. doi: 10.22060/miscj.2023.22720.5342
Mohammadreza Keshavarzi; Hadi Zayyani; Ali Kuhestani; Hossein Ahmadi. "Channel Phase Based Secret Key Generation: Untrusted Relaying or Not?". نشریه مهندسی عمران امیرکبیر, 56, 1, 1403, 117-126. doi: 10.22060/miscj.2023.22720.5342
Keshavarzi, Mohammadreza, Zayyani, Hadi, Kuhestani, Ali, Ahmadi, Hossein. (1403). 'Channel Phase Based Secret Key Generation: Untrusted Relaying or Not?', نشریه مهندسی عمران امیرکبیر, 56(1), pp. 117-126. doi: 10.22060/miscj.2023.22720.5342
Keshavarzi, Mohammadreza, Zayyani, Hadi, Kuhestani, Ali, Ahmadi, Hossein. Channel Phase Based Secret Key Generation: Untrusted Relaying or Not?. نشریه مهندسی عمران امیرکبیر, 1403; 56(1): 117-126. doi: 10.22060/miscj.2023.22720.5342

Channel Phase Based Secret Key Generation: Untrusted Relaying or Not?

AUT Journal of Modeling and Simulation
مقاله 8، دوره 56، شماره 1، 2024، صفحه 117-126    اصل مقاله (889.19 K)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22060/miscj.2023.22720.5342
نویسندگان
Mohammadreza Keshavarzi1؛ Hadi Zayyani2؛ Ali Kuhestani* 2؛ Hossein Ahmadi3
1Iran Telecommunication Research Center (ITRC), Tehran, Iran
2Faculty of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran
3Department of Electronic and Telecommunications, Polytechnic University of Turin, Italy.
چکیده
Compared to traditional cryptography methods, physical layer secret key generation (PLSKG) can be more efficient and well-suited for Internet-of-Things (IoT) owing to its lightweight nature and scalability. In PLSKG, schemes utilizing local random generators are employed to achieve a high key generation rate. In this study, it is proposed a high-rate PLSKG in the presence of an untrusted relay. This untrusted relay assists the PLSKG process but cannot determine the secret key. We select channel probe signals from PSK signals and adopt a multi-bit quantizer at the receiver to enhance practicality. Additionally, we utilize quantization with guard bands (GB) to decrease the key error rate. We calculate the performance and security of the proposed PLSKG scheme under these conditions. Our results indicate that the relay, receiving superimposed signals from Alice and Bob, cannot ascertain the secret key. Finally, we compare the proposed PLSKG with a direct scenario where the relay is omitted during key generation.
کلیدواژه‌ها
Secret Key Generation؛ Untrusted Relay؛ Direct Transmission؛ Channel Phase
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