Serious Cryptography: A Practical Introduction to Modern Encryption, 2nd Edition

A Practical, Engaging Guide to Modern Encryption

Jean-Philippe Aumasson has spent nearly two decades designing, researching, and breaking cryptographic systems. In Serious Cryptography, he brings that experience to a guide that respects both the mathematical foundations and the practical realities of securing data. This second edition adds new material on post-quantum cryptography and cryptocurrency, reflecting the field’s rapid evolution.

The book’s strength is its balance: it doesn’t shy away from important technical details, but it also keeps the focus on why these concepts matter and how they are used in real systems. You won’t find vague hand-waving or dated examples—instead, you’ll learn the algorithms that protect HTTPS connections, digital signatures, password storage, and blockchain transactions.

What You’ll Learn

• Symmetric cryptography: block ciphers, stream ciphers, hash functions, keyed hashing, and authenticated encryption.
• Asymmetric cryptography: hard problems, RSA, Diffie–Hellman, and elliptic curves.
• Applications: TLS, quantum and post-quantum cryptography, and cryptocurrency cryptography.

Why This Book Stands Out

Most cryptography books fall into two camps: overly academic texts that lose readers in proofs, or shallow overviews that skip the details needed to build secure systems. Aumasson navigates the middle path with clear explanations, concrete examples, and a consistent emphasis on practical security. The second edition’s expanded coverage of post-quantum algorithms makes it particularly timely for developers who need to prepare for a shifting cryptographic landscape.

Who Should Read It

This book is ideal for software developers, security engineers, computer science students, and anyone who wants to understand how modern encryption actually works. No prior cryptography background is required, but comfort with basic mathematics will help you get the most from the later chapters.

If you’re ready to move beyond buzzwords and build a genuine understanding of cryptography, this is the guide to keep on your desk.