Create n8n magic link tokens for authentication | COMPLETE n8n crash course [Part 7]

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In this video, we're adding a security layer to our n8n applications: Magic Link Authentication. This is the essential first step to verifying a user's identity before giving them access to sensitive, account-specific information in your workflow.



You'll learn how to build the core of this system by generating a secure, random token using the n8n Crypto node. We cover the "why" behind this method (and what to avoid), and some security best practices (like ephemeral, single-use tokens) that make this authentication pattern robust.



This is Lesson 7 of our free n8n Crash Course. It's self-contained, but you can check out the full playlist to learn more!



👇 WHAT YOU'LL LEARN IN THIS VIDEO 👇



🔑 What is a Magic Link?Understand the core concept of using one-time tokens for user authentication.

🤔 Why You Need It: Learn how to protect account-specific data by building an authentication-gated workflow.

🔀 Authentication Flow: See where magic link generation fits into a larger workflow that categorizes user requests.

🔒 Generate Secure Tokens: A step-by-step guide to using the **n8n Crypto node** to generate a 256-bit (64-character) hex token.

🚫 Common Pitfalls: Learn why generating a random token is more secure than hashing user data for this purpose.

⏱️ Security Best Practices: Understand the critical rules for making magic links secure (ephemeral & single-use).



🔗 Get the full lesson's code from GitHub: https://github.com/do-community/n8n-crash-course/tree/main/lessons/lesson_7



►► New to n8n? Watch our "Getting Started" video first: https://www.youtube.com/watch?v=uCe0IzejSBU

►► FULL N8N CRASH COURSE PLAYLIST: https://www.youtube.com/watch?v=BLG9kpUCnww&list=PLseEp7p6EwibcvBe7cOWqDmN99zAY_FL2



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TIMESTAMPS

0:00 - What is Magic Link Authentication?

0:53 - What is a Magic Link (And How It Works)

1:12 - Setting Up the Workflow (Categorizing Inquiries)

3:08 - How to Generate a Secure Token

4:10 - Alternative (Less Secure) Token Generation Methods

4:45 - Security Rules for Magic Links

5:21 - What's Next (Storing the Token in a Database)