From the viewpoint of the nationwide LoRa network implementation in the Netherlands

With the introduction of the connected world the interaction between human beings and technology further intensifies. By connecting different things from the physical world like refrigerators and televisions to the internet, the Internet of Things (IoT) is created. Different solutions (e.g. LoRa) are introduced to support IoT. LoRa is a LPWAN  that supports the use of a large network of nodes. In LoRa, cryptographic keys are being used for confidentiality, integrity and authentication purposes. Because the strength of a cryptographic algorithm lies in the secrecy of the cryptographic key, a proper implementation of key management is necessary. Several problems exist which relate to key distribution and key updating on the application layer in LoRa. To resolve these problems a key distribution and updating mechanism is proposed that makes it possible to update all secret keys being used in LoRa remotely and perform key distribution while the authenticity of public keys is guaranteed.

 

Keywords: LoRa, LPWAN, key management, key distribution, authenticated key exchange

 

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