Chapter 1, Cryptography for Developers, introduces the book by presenting the value that leveraging cryptography provides to developers, and then explains some core concepts used throughout all the chapters.

Chapter 2, Dealing with Binary and Random Data, demonstrates how binary data is managed in Node.js and how it is encoded to strings, as well as how to generate random sequences of bytes, all of which are operations frequently used when working with cryptography.

Chapter 3, File and Password Hashing with Node.js, is a practical overview of how to calculate digests of messages and files with Node.js with the SHA-2 family of functions, as well as how to hash passwords and derive keys with Argon2 and scrypt.

Chapter 4, Symmetric Encryption in Node.js, explains how to use symmetric ciphers such as AES and ChaCha20-Poly1305 with Node.js to encrypt messages and files.

Chapter 5, Using Asymmetric and Hybrid Encryption in Node.js, demonstrates using asymmetric cryptography to encrypt data with Node.js; this includes using RSA and hybrid encryption schemes based on RSA or Elliptic Curve Cryptography with ECIES.

Chapter 6, Digital Signatures with Node.js and Trust, includes both an introduction to calculating and verifying digital signatures with Node.js (using RSA or Elliptic Curve Cryptography) and an explanation of certificates and trust.

Chapter 7, Introduction to Cryptography in the Browser, explains the benefits and challenges of performing cryptography in the browser with JavaScript and includes an overview of dealing with binary and random data in frontend apps.

Chapter 8, Performing Common Cryptographic Operations in the Browser, demonstrates performing the cryptographic operations analyzed throughout the book in the context of apps running inside a web browser.