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Open AccessArticle

An Efficient Key Generation for the Internet of Things Based Synchronized Quantization

1
Department of Electrical Engineering, Faculty of Electrical Technology, Institut Teknologi Sepuluh Nopember, Jalan Raya ITS, Keputih, Sukolilo, Surabaya 60111, Indonesia
2
Department of Electrical Engineering, Politeknik Elektronika Negeri Surabaya (PENS), Jalan Raya ITS, Keputih, Sukolilo, Surabaya 60111, Indonesia
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(12), 2674; https://doi.org/10.3390/s19122674
Received: 9 May 2019 / Revised: 31 May 2019 / Accepted: 11 June 2019 / Published: 13 June 2019
(This article belongs to the Special Issue Wireless Systems and Networks in the IoT)
One solution to ensure secrecy in the Internet of Things (IoT) is cryptography. However, classical cryptographic systems require high computational complexity that is not appropriate for IoT devices with restricted computing resources, energy, and memory. Physical layer security that utilizes channel characteristics is an often used solution because it is simpler and more efficient than classical cryptographic systems. In this paper, we propose a signal strength exchange (SSE) system as an efficient key generation system and a synchronized quantization (SQ) method as a part of the SSE system that synchronizes data blocks in the quantization phase. The SQ method eliminates the signal pre-processing phase by performing a multi-bit conversion directly from the channel characteristics of the measurement results. Synchronization is carried out between the two authorized nodes to ensure sameness of the produced keys so it can eliminate the error-correcting phase. The test results at the IoT devices equipped with IEEE 802.11 radio show that SSE system is more efficient in terms of computing time and communication overhead than existing systems. View Full-Text
Keywords: Internet of Things; signal strength exchange system; synchronized quantization Internet of Things; signal strength exchange system; synchronized quantization
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Yuliana, M.; Wirawan; Suwadi. An Efficient Key Generation for the Internet of Things Based Synchronized Quantization. Sensors 2019, 19, 2674.

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