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Essential Cryptography for JavaScript Developers

You're reading from   Essential Cryptography for JavaScript Developers A practical guide to leveraging common cryptographic operations in Node.js and the browser

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Product type Paperback
Published in Feb 2022
Publisher Packt
ISBN-13 9781801075336
Length 220 pages
Edition 1st Edition
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Author (1):
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Alessandro Segala Alessandro Segala
Author Profile Icon Alessandro Segala
Alessandro Segala
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Table of Contents (13) Chapters Close

Preface 1. Part 1 – Getting Started
2. Chapter 1: Cryptography for Developers FREE CHAPTER 3. Chapter 2: Dealing with Binary and Random Data 4. Part 2 – Using Common Cryptographic Operations with Node.js
5. Chapter 3: File and Password Hashing with Node.js 6. Chapter 4: Symmetric Encryption in Node.js 7. Chapter 5: Using Asymmetric and Hybrid Encryption in Node.js 8. Chapter 6: Digital Signatures with Node.js and Trust 9. Part 3 – Cryptography in the Browser
10. Chapter 7: Introduction to Cryptography in the Browser 11. Chapter 8: Performing Common Cryptographic Operations in the Browser 12. Other Books You May Enjoy

Symmetric encryption with AES

The Advanced Encryption Standard (AES) is one of the most widely used symmetric ciphers, and it's been like that since its standardization in the early 2000s. It's safe (approved by the US government for encrypting "top secret" documents) and fast, with support available in all operating systems and programming languages.

Additionally, hardware acceleration for AES is available in all modern desktop and server CPUs (for example, the AES-NI instructions in Intel and AMD processors), as well as in a large number of mobile/embedded chips, making executing AES rather cheap in terms of computing power. A regular consumer-grade CPU can easily encrypt or decrypt AES streams at the speed of multiple gigabits per second. Many consumer operating systems are now encrypting hard drives by default, transparently to the user, using AES – that's the case of BitLocker on Windows and FileVault on macOS, for example.

To use AES, you...

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