Securing the MQTT protocol for the use within the Internet of Things

Most IoT devices have minimal computing power and are unable to use traditional encryption and authentication mechanisms or other forms of protection. Moreover, the communication between IoT devices is done in a high-latency environment and across long-ranges such as through Low Power Wide Area Network (LPWAN). Therefore, new security models must be devised specifically for this environment (Mathews and Gondkar, 2019).       MQ Telemetry Transport (MQTT) protocol was designed as an underlying communications protocol for the IoT. MQTT is built on top of the TCP/IP network stack and it is extremely lightweight. However, the problem is that it notably lacks suitable encryption, authentication, and authorization mechanisms for the IoT environment. The recommendation is to tunnel communication through a secure communication channel TLS/SSL which brings a significant overhead. The aforementioned shortcomings of IoT devices and communication requirements make it unsuitable for this use case. The aim of this research is to evaluate any possible alternatives, find the most suitable security model, and develop a prototype MQTT client supporting this security model (for example, in Java/Python/C using Eclipse Paho). Include: 1) comparative analysis of alternative security methods (examples included in the attached list of references) 2) performance analysis of the proposed method 3) source code and README Please follow more or less the following structure: Chapter 1. Introduction 1.1 Chapter Introduction 1.2 Problem Statement 1.3 Project Aims and Objectives 1.4 Approach 1.5 Outcome 1.6 Chapter Summary Chapter 2. Background and Review of Literature 2.1 Chapter Introduction 2.2 Research Background 2.3 Literature Review 2.4 Theory 2.5 Terminology 2.6 Chapter Summary Chapter 3. Analysis and Design 3.1 Chapter Introduction 3.2 Project Specification 3.3 Research Methods 3.4 Design Considerations 3.5 Chapter Summary Chapter 4. Implementation (Realisation) 4.1 Chapter Introduction 4.2 Details of the Implementation 4.3 The IT Artefact Chapter Summary Chapter 5. Results and Evaluation 5.1 Chapter Introduction 5.2 Evaluation of IT Artefact 5.3 Chapter Summary Chapter 6. Conclusions 6.1 Chapter Introduction 6.2 Strengths and Weakness of the Project 6.3 Academic Application and Limitations 6.4 Business Application and Limitations 6.5 Recommendations / Prospects for Futubcqre Research / Work 6.6 Chapter Summary

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