Is there a way to authenticate a user in Firebase by ONLY using a user-generated signature which is stored in Firestore? In other words, is there a way to generate a unique user ID associated with the signature but without having to have the user create an account with email and password?
Related
I'm working on a flutter app that doesn't require an email or password to sign in, it only requires the user to enter his name
my question is, how can I deal with the user data and use his user id without firebase authentication?
is that possible?
If you want to be able to identify a user without requiring the to enter credentials, consider using Firebase's anonymous authentication. You can then store data in your database associated with that anonymous user's UID.
Is it possible to implement Firebase Authentication with Username And Password
(not email and Password) in Flutter? Is there a way to do it with the Firebase Auth Plugin?
Logically you can control email address
I mean if you want you can maintain email address pattern and store the username for the created UID .
Example :
Var currentTimeStamp:
CurrentTimeStamp#gmail.com
No Need to verify the email address as you need only the UID
Then you have to store the UID ,email address ,along with username in the Firestone or real-time database so that user can login again with the user name .you have to check user name and password is correct or not then do signin with that email addrsss and the given password
Thanks
It’s just an idea
No, FirebaseAuth only supports sign in with email and password. There are no usernames unfortunately.
Currently there is no way to use the default FirebaseAuth to sign in with a username.
But email + password login is much more secure because if you want to try and brute force a user you have 2 missing pieces of information instead of one.
Actually there is a way from the start offered by Firebase. It is by using Custom Auth Tokens (link).
But this is most suitable when you have complete custom server/backend and only want to use Firebase Authentication to handle the authentication.
You will need to create custom auth tokens using the user's user id and password. This can only be done by Firebase Admin SDK (link).
That means this approach needs some kind of server. You can use Google cloud functions or AWS lambda for some cheap options.
Then in order to use the authenticated users, you'll need to implement a function to verify these tokens (link). This gives the UID of the user.
Is it possible to implement Firebase Authentication with Username And Password
(not email and Password) in Flutter? Is there a way to do it with the Firebase Auth Plugin?
Logically you can control email address
I mean if you want you can maintain email address pattern and store the username for the created UID .
Example :
Var currentTimeStamp:
CurrentTimeStamp#gmail.com
No Need to verify the email address as you need only the UID
Then you have to store the UID ,email address ,along with username in the Firestone or real-time database so that user can login again with the user name .you have to check user name and password is correct or not then do signin with that email addrsss and the given password
Thanks
It’s just an idea
No, FirebaseAuth only supports sign in with email and password. There are no usernames unfortunately.
Currently there is no way to use the default FirebaseAuth to sign in with a username.
But email + password login is much more secure because if you want to try and brute force a user you have 2 missing pieces of information instead of one.
Actually there is a way from the start offered by Firebase. It is by using Custom Auth Tokens (link).
But this is most suitable when you have complete custom server/backend and only want to use Firebase Authentication to handle the authentication.
You will need to create custom auth tokens using the user's user id and password. This can only be done by Firebase Admin SDK (link).
That means this approach needs some kind of server. You can use Google cloud functions or AWS lambda for some cheap options.
Then in order to use the authenticated users, you'll need to implement a function to verify these tokens (link). This gives the UID of the user.
I have a firebase project for which I have created a firebase firestore database. I use firebase auth for signing users in.
I want all documents in reference with a specific user to have their id equal to the users uid.
At first, I set the document id to the FirebaseAuth.FirebaseUser.uid
The problem with that is that the FirebaseUser.uid can change under certain circumstances (E.g. the user changes his Google account password)
Is there a persistent uid I can use to refer to a specific user no matter the authentication provider ? If not, what would be best practice ?
Normally, for a given user in Firebase Auth, the user unique ID (the uid generated by the Auth service) will never change.
For example, you can, with the Admin SDK, change the email of a user without changing its uid, see this doc.
You can also have several identity providers for the same account, with the same uid, see here:
You can sign in users to your apps using several methods: email
address and password, federated identity providers, and your custom
auth system. You can associate more than one sign-in method with a
user: for example, a user can sign in to the same account using an
email address and a password, or using Google Sign-In
Note that changing the password of an identity provider account (e.g. "changing the Google account password" as you mentioned) has no impact at all on the uid or on the other user account elements (actually the identity provider password is not stored in Firebase Auth).
So, in conclusion, using the uid generated by the Auth service is the best solution for your requirement.
I'm using Firebase Authentication as the authenticator for a .NET app.
I'm not using any other part of Firebase (eg. Firestore, Realtime DB) other than the Authentication.
When I log in using the firebase-ui to get a JWT token issued, it returns a "displayName" as part of the AuthResult which is basically the name field when the user first signed up.
I'm only using the Email / Password sign-in method. Where is this data stored? The Users tab on Firebase Authentication console only shows 5 fields - Identifier, Provider, Created, Signed In and User UID.
Is Firebase authentication storing the user fields like this in some sort of hidden place that I can't access unless I log in as the user?
Firebase Authentication stores user profiles in its internal database. Some of the properties are exposed in the Firebase console, but not all of them. You can get all documented properties through the Admin SDK.