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What is JWT Authentication Explained

Learn how JWT authentication works and how tokens are used to secure APIs.


🔐 What is JWT?

JWT (JSON Web Token) is a secure way to transmit information between client and server.

🧱 Structure

HEADER.PAYLOAD.SIGNATURE

📡 How It Works

  • User logs in
  • Server returns token
  • Client sends token in requests

🛡️ Security Tips

  • Never expose secret keys
  • Use HTTPS
  • Set expiration time

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