Autenticar com o Firebase em plataformas Apple usando um sistema de autenticação personalizado
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É possível integrar o Firebase Authentication a um sistema de autenticação personalizado
modificando o servidor de autenticação para produzir tokens assinados personalizados quando
um usuário faz login. Seu app recebe e usa esse token para se autenticar com o Firebase.
Clique em Gerar uma nova chave privada na parte inferior da seção SDK Admin do Firebase da página Contas de serviço.
O novo par de chaves pública/privada da conta de serviço é salvo automaticamente no seu computador. Copie esse arquivo para seu servidor de autenticação.
Autenticar no Firebase
Importe o módulo FirebaseCore no
UIApplicationDelegate, assim como qualquer outro
módulo do Firebase usado pelo delegado do app.
Por exemplo, para usar Cloud Firestore, Authentication e:
Configure uma
instância compartilhada do
FirebaseApp no método application(_:didFinishLaunchingWithOptions:)
do delegado do app:
SwiftUI
// Use Firebase library to configure APIsFirebaseApp.configure()
Swift
// Use Firebase library to configure APIsFirebaseApp.configure()
Objective-C
// Use Firebase library to configure APIs[FIRAppconfigure];
Se você estiver usando a SwiftUI, crie um delegado do aplicativo e o anexe
ao struct App via UIApplicationDelegateAdaptor ou
NSApplicationDelegateAdaptor. Também é necessário desativar o swizzling do delegado do app. Para
mais informações, consulte as instruções da SwiftUI.
SwiftUI
@mainstructYourApp:App{// register app delegate for Firebase setup@UIApplicationDelegateAdaptor(AppDelegate.self)vardelegatevarbody:someScene{WindowGroup{NavigationView{ContentView()}}}}
Quando os usuários fizerem login no seu app, envie as credenciais de login, como
nome de usuário e senha, ao seu servidor de autenticação. O servidor verifica as credenciais e retorna um token personalizado se elas forem válidas.
Depois de receber o token personalizado do servidor de autenticação, envie-o para signInWithCustomToken e faça o login do
usuário:
Depois que um usuário faz login pela primeira vez, uma nova conta de usuário é criada e
vinculada às credenciais, que podem ser o número do telefone,
o nome de usuário e a senha ou as informações do provedor de autenticação. Essa nova
conta é armazenada como parte do projeto do Firebase e pode ser usada para identificar
um usuário em todos os apps do projeto, seja qual for o método de login utilizado.
É possível receber as informações básicas de perfil do usuário do objeto
User nos seus apps. Consulte Gerenciar usuários.
Nas
Regras de segurançaFirebase Realtime Database e Cloud Storage, você pode
acessar o ID exclusivo do usuário conectado pela variável auth
e usar essas informações para controlar
quais dados um usuário pode acessar.
[null,null,["Última atualização 2025-08-16 UTC."],[],[],null,["You can integrate Firebase Authentication with a custom authentication system by\nmodifying your authentication server to produce custom signed tokens when a user\nsuccessfully signs in. Your app receives this token and uses it to authenticate\nwith Firebase.\n\nBefore you begin\n\n1. [Create a Firebase project and register your app](/docs/ios/setup) if you haven't already.\n2. Use Swift Package Manager to install and manage Firebase dependencies.\n\n | Visit [our installation guide](/docs/ios/installation-methods) to learn about the different ways you can add Firebase SDKs to your Apple project, including importing frameworks directly and using CocoaPods.\n 1. In Xcode, with your app project open, navigate to **File \\\u003e Add Packages**.\n 2. When prompted, add the Firebase Apple platforms SDK repository: \n\n ```text\n https://github.com/firebase/firebase-ios-sdk.git\n ```\n | **Note:** New projects should use the default (latest) SDK version, but you can choose an older version if needed.\n 3. Choose the Firebase Authentication library.\n 4. Add the `-ObjC` flag to the *Other Linker Flags* section of your target's build settings.\n 5. When finished, Xcode will automatically begin resolving and downloading your dependencies in the background.\n3. Get your project's server keys:\n 1. Go to the [Service Accounts](https://console.firebase.google.com/project/_/settings/serviceaccounts/adminsdk) page in your project's settings.\n 2. Click *Generate New Private Key* at the bottom of the *Firebase Admin SDK* section of the *Service Accounts* page.\n 3. The new service account's public/private key pair is automatically saved on your computer. Copy this file to your authentication server.\n\nAuthenticate with Firebase\n\n1. Import the `FirebaseCore` module in your `UIApplicationDelegate`, as well as any other [Firebase modules](/docs/ios/setup#available-pods) your app delegate uses. For example, to use Cloud Firestore and Authentication: \n\n SwiftUI \n\n ```swift\n import SwiftUI\n import FirebaseCore\n import FirebaseFirestore\n import FirebaseAuth\n // ...\n \n ```\n\n Swift \n\n ```swift\n import FirebaseCore\n import FirebaseFirestore\n import FirebaseAuth\n // ...\n \n ```\n\n Objective-C \n\n ```objective-c\n @import FirebaseCore;\n @import FirebaseFirestore;\n @import FirebaseAuth;\n // ...\n \n ```\n2. Configure a [`FirebaseApp`](/docs/reference/swift/firebasecore/api/reference/Classes/FirebaseApp) shared instance in your app delegate's `application(_:didFinishLaunchingWithOptions:)` method: \n\n SwiftUI \n\n ```swift\n // Use Firebase library to configure APIs\n FirebaseApp.configure()\n ```\n\n Swift \n\n ```swift\n // Use Firebase library to configure APIs\n FirebaseApp.configure()\n ```\n\n Objective-C \n\n ```objective-c\n // Use Firebase library to configure APIs\n [FIRApp configure];\n ```\n3. If you're using SwiftUI, you must create an application delegate and attach it to your `App` struct via `UIApplicationDelegateAdaptor` or `NSApplicationDelegateAdaptor`. You must also disable app delegate swizzling. For more information, see the [SwiftUI instructions](/docs/ios/learn-more#swiftui). \n\n SwiftUI \n\n ```swift\n @main\n struct YourApp: App {\n // register app delegate for Firebase setup\n @UIApplicationDelegateAdaptor(AppDelegate.self) var delegate\n\n var body: some Scene {\n WindowGroup {\n NavigationView {\n ContentView()\n }\n }\n }\n }\n \n ```\n4. When users sign in to your app, send their sign-in credentials (for example, their username and password) to your authentication server. Your server checks the credentials and returns a [custom token](/docs/auth/admin/create-custom-tokens) if they are valid.\n5. After you receive the custom token from your authentication server, pass it to `signInWithCustomToken` to sign in the user: \n\n Swift \n\n ```swift\n Auth.auth().signIn(withCustomToken: customToken ?? \"\") { user, error in\n // ...\n }\n ```\n\n Objective-C \n\n ```objective-c\n [[FIRAuth auth] signInWithCustomToken:customToken\n completion:^(FIRAuthDataResult * _Nullable authResult,\n NSError * _Nullable error) {\n // ...\n }];\n ```\n\nNext steps\n\nAfter a user signs in for the first time, a new user account is created and\nlinked to the credentials---that is, the user name and password, phone\nnumber, or auth provider information---the user signed in with. This new\naccount is stored as part of your Firebase project, and can be used to identify\na user across every app in your project, regardless of how the user signs in.\n\n- In your apps, you can get the user's basic profile information from the\n [`User`](/docs/reference/ios/firebaseauth/interface_f_i_r_user) object. See [Manage Users](/docs/auth/ios/manage-users).\n\n- In your Firebase Realtime Database and Cloud Storage\n [Security Rules](/docs/database/security/user-security), you can\n get the signed-in user's unique user ID from the `auth` variable,\n and use it to control what data a user can access.\n\nYou can allow users to sign in to your app using multiple authentication\nproviders by [linking auth provider credentials to an\nexisting user account.](/docs/auth/ios/account-linking)\n\nTo sign out a user, call [`signOut:`](/docs/reference/ios/firebaseauth/interface_f_i_r_auth#ab0d5111f05c3f1906243852cc8ef41b1). \n\nSwift \n\n```swift\nlet firebaseAuth = Auth.auth()\ndo {\n try firebaseAuth.signOut()\n} catch let signOutError as NSError {\n print(\"Error signing out: %@\", signOutError)\n}\n```\n\nObjective-C \n\n```objective-c\nNSError *signOutError;\nBOOL status = [[FIRAuth auth] signOut:&signOutError];\nif (!status) {\n NSLog(@\"Error signing out: %@\", signOutError);\n return;\n}\n```\n\nYou may also want to add error handling code for the full range of authentication\nerrors. See [Handle Errors](/docs/auth/ios/errors)."]]