Book Image

Hands-On IoT Solutions with Blockchain

By : Maximiliano Santos, Enio Moura
Book Image

Hands-On IoT Solutions with Blockchain

By: Maximiliano Santos, Enio Moura

Overview of this book

Blockchain has been the hot topic of late thanks to cryptocurrencies. To make matters more interesting, the financial market is looking for ways to reduce operational costs and generate new business models, and this is where blockchain solutions come into the picture. In addition to this, with Internet of Things (IoT) trending and Arduino, Raspberry Pi, and other devices flooding the market, you can now create cheap devices even at home. Hands-On IoT Solutions with Blockchain starts with an overview of IoT concepts in the current business scenario. It then helps you develop your own device on the IBM Watson IoT platform and create your fi rst IoT solution using Watson and Intel Edison.Once you are familiar with IoT, you will learn about Blockchain technology and its use cases. You will also work with the Hyperledger framework and develop your own Blockchain network. As you progress through the chapters, you'll work with problem statements and learn how to design your solution architecture so that you can create your own integrated Blockchain and IoT solution. The next set of chapters will explain how to implement end-to-end Blockchain solutions with IoT using the IBM Cloud platform. By the end of this book, you will have mastered the convergence of IoT and Blockchain technology and exploited the best practices and drivers to develop a bulletproof integrated solution.
Table of Contents (15 chapters)
Title Page
About Packt

Software components

Now we'll look at the software components of our solution for an architect's perspective. This is a good way to get familiarized with all of the components and have a better understanding of how they are integrated.

To start, let's explore one of the most important components: the authentication process.

How we can guarantee that each member of the blockchain has the correct access permission in our frontend application? After answering this question, we'll delve into the most important components of Hyperledger Composer: the modeling language and the transaction processor functions.

Composer REST server

To authenticate clients, we'll need to set up a REST server. With this option available, the clients should be authenticated before they are permitted a call in the REST API.

The REST server uses an open source software named PASSPORT, an authentication middleware for Node.js. It's flexible and modular and supports authentication via username and password, Facebook, Twitter...