Security analysis for MQTT in Internet of Things

Sammanfattning: Internet of Things, i.e. IoT, has become a very trending topic in researchand has been investigated in recent years. There can be severaldifferent scenarios and implementations where IoT is involved. Eachof them has its requirements. In these type IoT networks new communicationprotocols which are meant to be lightweight are includedsuch as MQTT.In this thesis there are two key aspects which are under study: securityand achieving a lightweight communication. We want to proposea secure and lightweight solution in an IoT scenario using MQTT asthe communication protocol.We perform different experiments with different implementationsover MQTT which we evaluate, compare and analyze.The results obtained help to answer our research questions andshow that the proposed solution fulfills the goals we proposed in thebeginning of this work.