Channel-Envelope Differencing Eliminates Secret Key Correlation: LoRa-Based Key Generation in Low Power Wide Area Networks
This addresses the need for secure key generation in low-power, long-range networks, but appears incremental as it applies differential quantization to LoRa.
The paper tackled the problem of generating secure keys for long-range wireless communications in low power wide area networks (LPWANs) using LoRa, and the result was a technique that reliably produces secure keys, as demonstrated in outdoor urban and indoor environments.
This paper presents automatic key generation for long-range wireless communications in low power wide area networks (LPWANs), employing LoRa as a case study. Differential quantization is adopted to extract a high level of randomness. Experiments conducted both in an outdoor urban environment and in an indoor environment demonstrate that this key generation technique is applicable for LPWANs, and shows that it is able to reliably generate secure keys.