Discover how to take advantage of common cryptographic operations to build safer apps that respect users' privacy with the help of examples in JavaScript for Node.js and browsers Key Features Understand how to implement common cryptographic operations in your code with practical examples Learn about picking modern safe algorithms, which libraries you should rely on, and how to use them correctly Build modern and secure applications that respect your users' privacy with cryptography Book DescriptionIf you're a software developer, this book will give you an introduction to cryptography, helping you understand how to make the most of it for your applications. The book contains extensive code samples in JavaScript, both for Node.js and for frontend apps running in a web browser, although the core concepts can be used by developers working with any programming language and framework. With a purely hands-on approach that is focused on sharing actionable knowledge, you'll learn about the common categories of cryptographic operations that you can leverage in all apps you're developing, including hashing, encryption with symmetric, asymmetric and hybrid ciphers, and digital signatures. You'll learn when to use these operations and how to choose and implement the most popular algorithms to perform them, including SHA-2, Argon2, AES, ChaCha20-Poly1305, RSA, and Elliptic Curve Cryptography. Later, you'll learn how to deal with password and key management. All code in this book is written in JavaScript and designed to run in Node.js or as part of frontend apps for web browsers. By the end of this book, you'll be able to build solutions that leverage cryptography to protect user privacy, offer better security against an expanding and more complex threat landscape, help meet data protection requirements, and unlock new opportunities. What you will learn Write JavaScript code that uses cryptography running within a Node.js environment for the server-side or in frontend applications for web browsers Use modern, safe hashing functions for calculating digests and key derivation, including SHA-2 and Argon2 Practice encrypting messages and files with a symmetric key using AES and ChaCha20-Poly1305 Use asymmetric and hybrid encryption, leveraging RSA and Elliptic Curve Cryptography with ECDH and ECIES Calculate and verify digital signatures using RSA and ECDSA/EdDSA Manage passwords and encryption keys safely Who this book is forThis cryptography book is an introductory guide for software developers who don't necessarily have a background in cryptography but are interested in learning how to integrate it in their solutions, correctly and safely. You'll need to have at least intermediate-level knowledge of building apps with JavaScript and familiarity with Node.js to make the most of this book.

Build your first web project using the Svelte framework and deploy it in the cloud with automated testing and CI/CD Key Features A practical guide to building production-ready static web apps with Svelte 3 Build faster and leaner frontend and static web apps using the JAMstack Deploy your Svelte 3 app to production using cloud services and DevOps principles such as automated testing and CI/CD Book DescriptionSvelte is a modern JavaScript framework used to build static web apps that are fast and lean, as well as being fun for developers to use. This book is a concise and practical introduction for those who are new to the Svelte framework which will have you up to speed with building apps quickly, and teach you how to use Svelte 3 to build apps that offer a great app user experience (UX). The book starts with an introduction to Svelte 3, before showing you how to set up your first complete application with the framework. Filled with code samples, each chapter will show you how to write components using the Svelte template syntax and the application programming interfaces (APIs) of the Svelte framework. As you advance, you'll go from scaffolding your project and tool setup all the way through to production with DevOps principles such as automated testing, continuous integration, and continuous delivery (CI/CD). Finally, you'll deploy your application in the cloud with object storage services and a content delivery network (CDN) for best-in-class performance for your users. By the end of this book, you'll have learned how to build and deploy apps using Svelte 3 to solve real-world problems and deliver impressive results. What you will learn Understand why Svelte 3 is the go-to framework for building static web apps that offer great UX Explore the tool setup that makes it easier to build and debug Svelte apps Scaffold your web project and build apps using the Svelte framework Create Svelte components using the Svelte template syntax and its APIs Combine Svelte components to build apps that solve complex real-world problems Use Svelte's built-in animations and transitions for creating components Implement routing for client-side single-page applications (SPAs) Perform automated testing and deploy your Svelte apps, using CI/CD when applicable Who this book is forThe book is for frontend or full-stack developers looking to build modern web apps with Svelte. Web developers with experience in leading frontend JavaScript frameworks who wish to learn Svelte will find this book useful. The book assumes a solid understanding of JavaScript and core HTML5 technologies. Basic understanding of modern frontend frameworks will be beneficial, but not necessary.