Book Image

The Go Workshop

By : Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó
Book Image

The Go Workshop

By: Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó

Overview of this book

The Go Workshop will take the pain out of learning the Go programming language (also known as Golang). It is designed to teach you to be productive in building real-world software. Presented in an engaging, hands-on way, this book focuses on the features of Go that are used by professionals in their everyday work. Each concept is broken down, clearly explained, and followed up with activities to test your knowledge and build your practical skills. Your first steps will involve mastering Go syntax, working with variables and operators, and using core and complex types to hold data. Moving ahead, you will build your understanding of programming logic and implement Go algorithms to construct useful functions. As you progress, you'll discover how to handle errors, debug code to troubleshoot your applications, and implement polymorphism using interfaces. The later chapters will then teach you how to manage files, connect to a database, work with HTTP servers and REST APIs, and make use of concurrent programming. Throughout this Workshop, you'll work on a series of mini projects, including a shopping cart, a loan calculator, a working hours tracker, a web page counter, a code checker, and a user authentication system. By the end of this book, you'll have the knowledge and confidence to tackle your own ambitious projects with Go.
Table of Contents (21 chapters)
Free Chapter
1. Variables and Operators
2. Logic and Loops


Encryption is the process of converting data into a format in which it cannot be read by an unintended recipient.

When dealing with sensitive data, it is always best practice to encrypt it. The nature of the data will determine the sensitivity. For example, credit card information from your customers can be considered as highly sensitive data, whereas the item being bought could be considered as not very sensitive.

You will probably come across the terms encryption at rest and encryption in transit, referring to how data should be encrypted before being stored (for example, in a database) or transmitted (for example, over a network). We will touch on encryption in transit in a later topic (HTTP/TLS).

In this topic, we will focus on the underlying encryption mechanisms.

Since (good) encryption algorithms are complicated by nature, the general advice is to always use existing encryption algorithms and not invent your own. The strength of an encryption algorithm...