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Studies in systems, decision and control

Improved Bit Disagreement for the Internet of Things Based on Modified Windows Using Physical Layer Key Generation

Khushwant Singh, Mohit Kumar Yadav, Yudhvir Singh, Álvaro Rocha, Fernando Moreira

Published Jan 1, 2025• 0 citations
Publisher
DOI
10.1007/978-3-031-78412-5_8

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On low-power, low-cost Internet of Things (IoT) edges, coarse-grained entropy source-based physical-layer key generation (PKG) is often used, which results in a very low bit generation rate (BGR). In this paper, a novel PKG scheme, Hinge, designed to adapt to varying environmental conditions is introduced to optimize the trade-off between the bit mismatch rate (BMR) and BGR using fine-grained entropy sources on IoT devices. Hinge predicts channel reciprocity levels from one side and dynamically adjusts the quantization strategy, maintaining a low BMR while maximizing BGR. Compared with existing PKG solutions on Bluetooth devices, Hinge yields significant improvements in BGR, with a comparable BMR. Through extensive experiments, Hinge showcases its potential for providing a secure and efficient key generation mechanism for IoT devices in complex real-world scenarios.