nodejs-auth VS firebase-admin-node

I think I only need JWT and a good hashing algorythm for a good user auth? I found this: https://softwareontheroad.com/nodejs-jwt-authentication-oauth/ Please tell me if its fine. Thank you very much...

USE OF JWT BACKEND SERVER For using JWT token on the backend server you need to install firebase-admin to your backend server. After installing firebase admin, you need to import firebase-admin and initialize the firebase app. To initial it you need a private key from your firebase project. To generate a private key file for your service account: In the Firebase console, open Settings > Service Accounts > Click Generate New Private Key, then confirm by clicking Generate Key > Securely store the JSON file containing the key. Check this to initial firebase app to backend end server After initialization, you will get that token from Headers authorization. After getting that token from the header token you have to check that token and you have to decode it as an object. After decoding your token, you will get logged on user information as an object. you can verify users using middleware on your backend server. Check below to decode the JWT token.

Note that, because I'm now going to be referencing a Firestore collection, I need to import firebase-admin functions and call initializeApp() to authenticate the function. The firebase-admin SDK is a special set of functions used specifically for Cloud function work (see the Firebase Admin SDK for details). Note that I don't need to supply credentials - according to Google's Run functions locally document "Cloud Firestore triggers are automatically granted permission because they are running in a trusted environment". In fact, I'd strictly only need the admin.initializeApp() statement if I was intending to use Firestore functions on document other than the one that fires the trigger - but it's probably best to get used to using it as a standard practice when working with Firestore functions.

// File: lib/fireConfig.js export const fireConfig= { // Place the json obtained as in // https://firebase.google.com/docs/admin/setup#initialize-sdk }

Follow the instructions at Add the Firebase Admin SDK to your server (google.com) to finish setting up the admin SDK. You will need to save the JSON file with your private key to your local machine and add it to the Loopback app. I usually save it into a folder under the app root called ./keys/ and I add this folder to my .gitignore file so as to avoid checking in the secret file.

Once it’s done, go to functions → index.js and import and initialize Firebase Admin SDK.

Looks like you can install firebase admin into an express server and continue to use your firebase auth 👌 https://firebase.google.com/docs/admin/setup

Follow the steps at https://firebase.google.com/docs/admin/setup and download the JSON file.

Use https://github.com/firebase/firebase-admin-node.

Checkout Add Firebase to a server documentation page.