firebase-authentication

I am creating a key combining two Firebase user IDs, such as . Would anyone know the character set of which Firebase User IDs are comprised of? Ideally, the delimiter should not be in the possible character set forming the Firebase user IDs. (P.S.: Am planning on using underscore "_" or double underscore "__" as the delimiter). The auto generated latest version Firebase uids are alphanumeric with no dashes or underscores. The previous version of Firebase used uuid for uids. So those contained dashes. That said, if you are creating your own users via the admin sdk, you can specify dashes and

I am using Firebase Auth for a web app that involves financial transactions. Thus, security is the most important thing for my app. According to this doc , Firebase can persist its token across multiple sessions by storing it somewhere. It does not mention how safe it is from XSS. Of course, I can just assume it's safe because it's Google, but I want to know more about it. We've all read articles noting how localStorage is unsafe for storing auth, and cookie + csrf token + jwt + httpOnly is more secure way to handle auth for browsers. How does Firebase store its token? Does it use localStorage

For my Android application, I'm trying to use Firebase to authentication and data storage. Right now, I'm stuck on authentication. When my application loads, an error stacktrace appears in the Android Studio console. W/GooglePlayServicesUtil: Cannot find Google Play services package name. android.content.pm.PackageManager$NameNotFoundException: com.google.android.gms at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:137) at com.google.android.gms.internal.zzrt.getPackageInfo(Unknown Source) at com.google.android.gms.common.zze.zzby(Unknown Source) at com

I am trying to add Google Authentication in my Flutter Application. But my Android studio is not able to find the method signInWithGoogle under FirebaseAuth class. I mean to say when I write FirebaseAuth. signInWithGoogle Android studio complains saying The method signInWithGoogle isn't defined for the class Firebase . I already have the have Firebase.signInWithEmailAndPassword and it is working fine. I have below dependency in pubspec.yaml firebase_auth: ^0.8.0+1 Below are my imports in the class... import 'package:firebase_auth/firebase_auth.dart'; import 'package:flutter/material.dart';

I am using Firebase to register and log users with different providers (google, facebook and email). I have been using this functionality for three month and so far it has worked fine. However, at this moment, when I make the first login after installing the app, it takes more than 10 seconds. I have traced the behavior and I find this listener is causing the delay. private FirebaseAuth firebaseAuth; ... firebaseAuth.signInWithCredential(credential).addOnSuccessListener(new OnSuccessListener<AuthResult>() { @Override public void onSuccess(AuthResult authResult) { // This function is called

We're using Custom Claims in Firebase Auth to manage access in Firebase and allow custom UI experience. We're now working on the User Admin part and we can't find a way to retrieve users by the custom claims. For example, a user belongs to an organization and have different access level - admin or user. We need to allow the organization's admin to see all their organization's users. We'd like to avoid using a separate database to manage organization users to not double up the data. Is it possible? Can we retrieve all Auth users while filtering them by specific Custom Claim? Thanks! There is no