Phase 8 · Authentication Across the Stack

Topics

Password Hashing

Part of the Full Stack Developer Roadmap.

Summary

Never store passwords in plain text — bcrypt is a slow, salted hashing algorithm your backend uses to store and verify passwords securely.

How to Learn This

  • 1Hash a password with bcrypt on signup and verify it on login.
  • 2Learn why bcrypt is deliberately slow, unlike a fast hash like SHA-256.
  • 3Understand this happens entirely on the backend — the frontend never sees or stores a hash.
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