Providing reliability and auditability to the IoT LwM2M protocol through Blockchain

Blockchain has come to provide transparency, reliability as well as to increase the security in computer systems, especially in distributed ones like the Internet of Things (IoT). A few integrations have been proposed in this context so far; however, most of these solutions do not pay special attention to the interoperability of the IoT, one of the biggest challenges in this field. In this paper, a Blockchain solution has been integrated into the OMA Lightweight M2M (LwM2M), a promising industry IoT protocol for global interoperability. This integration provides reliability and auditability to the LwM2M protocol enabling IoT devices (LwM2M clients) to transparently interact with the protocol. Furthermore, a missing reliable API to allow users and applications to securely interact with the system and an interface to store critical information like anomalies for auditability have been defined.

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