1. Introduction
2. How to Use This Book
6. Part 1 — Why Rust Meets Cryptography
7. 1.1. Cryptography is a Systems Problem
8. 1.2. Safety, Performance, Predictability
9. 1.3. Cost of Unsafety: Famous Failures
10. 1.4. First Code: A Naive XOR Encryptor
11. 1.5. Tooling Up
13. Part 2 — Core Cryptographic Primitives
14. 2.1. Symmetric Ciphers — XOR, AES, ChaCha20