Book Image

Mastering Internet of Things

By : Peter Waher
Book Image

Mastering Internet of Things

By: Peter Waher

Overview of this book

The Internet of Things (IoT) is the fastest growing technology market. Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. Mastering Internet of Things starts by presenting IoT fundamentals and the smart city. You will learn the important technologies and protocols that are used for the Internet of Things, their features, corresponding security implications, and practical examples on how to use them. This book focuses on creating applications and services for the Internet of Things. Further, you will learn to create applications and services for the Internet of Things. You will be discover various interesting projects and understand how to publish sensor data, control devices, and react to asynchronous events using the XMPP protocol. The book also introduces chat, to interact with your devices. You will learn how to automate your tasks by using Internet of Things Service Platforms as the base for an application. You will understand the subject of privacy, requirements they should be familiar with, and how to avoid violating any of the important new regulations being introduced. At the end of the book, you will have mastered creating open, interoperable and secure networks of things, protecting the privacy and integrity of your users and their information.
Table of Contents (24 chapters)
Title Page
Copyright and Credits
Packt Upsell

Securing your devices

Up to this point, we've only used unsecured and unencrypted CoAP. This should only be done while developing, and in closed networks. On the internet, and if the data is personal, CoAP should always be encrypted, and access to the device should always be authenticated and authorized. All these things can be managed directly by the DTLS layer.

To enable DTLS, we create our CoAP endpoint in a different manner:

this.coapEndpoint = new CoapEndpoint( 
   CoapEndpoint.DefaultCoapsPort, this.users); 

Here, we utilize the IUserSource source of users defined in the previous chapters. Remember that it defined one user, with the username MIoT and the password rox. The password was hashed, however, and it is this hash that will be used as a pre-shared key. The username acts as the identity used by DTLS to identify the pre-shared key. So, to access the device using these settings, a session needs to be established by the device using DTLS and the PSK identity of MIoT and the binary...