Book Image

Ethereum Cookbook

By : Manoj P R
Book Image

Ethereum Cookbook

By: Manoj P R

Overview of this book

Ethereum and Blockchain will change the way software is built for business transactions. Most industries have been looking to leverage these new technologies to gain efficiencies and create new business models and opportunities. The Ethereum Cookbook covers various solutions such as setting up Ethereum, writing smart contracts, and creating tokens, among others. You’ll learn about the security vulnerabilities, along with other protocols of Ethereum. Once you have understood the basics, you’ll move on to exploring various design decisions and tips to make your application scalable and secure. In addition to this, you’ll work with various Ethereum packages such as Truffle, Web3, and Ganache. By the end of this book, you’ll have comprehensively grasped the Ethereum principles and ecosystem.
Table of Contents (13 chapters)

Generating random numbers in Solidity

Some applications might need a random number generator (RNG) to perform specific tasks. There are many use cases where randomness is an essential part. For example, a decentralized lottery requires a random number to select the winner. Randomness can also be used to provide suggestions to the users of the application.

Generating a random number can be tricky in a decentralized system such as Ethereum for various reasons. Such functionality has to be achieved through design workarounds. In this chapter, you will learn how to build an RNG that can be used in your DApp.

Getting ready

It is required to have at least a basic knowledge of writing smart contracts and building DApps using Web3JS...