多因素认证

#介绍

Users in Filament can sign in with their email address and password by default. However, you can enable multi-factor authentication (MFA) to add an extra layer of security to your users’ accounts.

When MFA is enabled, users must perform an extra step before they are authenticated and have access to the application.

Filament includes two methods of MFA which you can enable out of the box:

• App authentication uses a Google Authenticator-compatible app (such as the Google Authenticator, Authy, or Microsoft Authenticator apps) to generate a time-based one-time password (TOTP) that is used to verify the user.
• Email authentication sends a one-time code to the user’s email address, which they must enter to verify their identity.

In Filament, users set up multi-factor authentication from their profile page. If you use Filament’s profile page feature, setting up multi-factor authentication will automatically add the correct UI elements to the profile page:

use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->profile();
}

#App authentication

To enable app authentication in a panel, you must first add a new column to your users table (or whichever table is being used for your “authenticatable” Eloquent model in this panel). The column needs to store the secret key used to generate and verify the time-based one-time passwords. It can be a normal text() column in a migration:

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Schema::table('users', function (Blueprint $table) {
    $table->text('app_authentication_secret')->nullable();
});

In the User model, you need to ensure that this column is encrypted and $hidden, since this is incredibly sensitive information that should be stored securely:

use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, MustVerifyEmail
{
    // ...

    /**
     * @var array<string>
     */
    protected $hidden = [
        // ...
        'app_authentication_secret',
    ];

    /**
     * @var array<string, string>
     */
    protected $casts = [
        // ...
        'app_authentication_secret' => 'encrypted',
    ];
    
    // ...
}

Next, you should implement the HasAppAuthentication interface on the User model. This provides Filament with the necessary methods to interact with the secret code and other information about the integration:

use Filament\Auth\MultiFactor\App\Contracts\HasAppAuthentication;
use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, HasAppAuthentication, MustVerifyEmail
{
    // ...

    public function getAppAuthenticationSecret(): ?string
    {
        // This method should return the user's saved app authentication secret.
    
        return $this->app_authentication_secret;
    }

    public function saveAppAuthenticationSecret(?string $secret): void
    {
        // This method should save the user's app authentication secret.
    
        $this->app_authentication_secret = $secret;
        $this->save();
    }

    public function getAppAuthenticationHolderName(): string
    {
        // In a user's authentication app, each account can be represented by a "holder name".
        // If the user has multiple accounts in your app, it might be a good idea to use
        // their email address as then they are still uniquely identifiable.
    
        return $this->email;
    }
}

Finally, you should activate the app authentication feature in your panel. To do this, use the multiFactorAuthentication() method in the configuration, and pass a AppAuthentication instance to it:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make(),
        ]);
}

#Setting up app recovery codes

If your users lose access to their two-factor authentication app, they will be unable to sign in to your application. To prevent this, you can generate a set of recovery codes that users can use to sign in if they lose access to their two-factor authentication app.

In a similar way to the app_authentication_secret column, you should add a new column to your users table (or whichever table is being used for your “authenticatable” Eloquent model in this panel). The column needs to store the recovery codes. It can be a normal text() column in a migration:

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Schema::table('users', function (Blueprint $table) {
    $table->text('app_authentication_recovery_codes')->nullable();
});

In the User model, you need to ensure that this column is encrypted as an array and $hidden, since this is incredibly sensitive information that should be stored securely:

use Filament\Auth\MultiFactor\App\Contracts\HasAppAuthentication;
use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, HasAppAuthentication, MustVerifyEmail
{
    // ...

    /**
     * @var array<string>
     */
    protected $hidden = [
        // ...
        'app_authentication_recovery_codes',
    ];

    /**
     * @var array<string, string>
     */
    protected $casts = [
        // ...
        'app_authentication_recovery_codes' => 'encrypted:array',
    ];
    
    // ...
}

Next, you should implement the HasAppAuthenticationRecovery interface on the User model. This provides Filament with the necessary methods to interact with the recovery codes:

use Filament\Auth\MultiFactor\App\Contracts\HasAppAuthentication;
use Filament\Auth\MultiFactor\App\Contracts\HasAppAuthenticationRecovery;
use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, HasAppAuthentication, HasAppAuthenticationRecovery, MustVerifyEmail
{
    // ...

    /**
     * @return ?array<string>
     */
    public function getAppAuthenticationRecoveryCodes(): ?array
    {
        // This method should return the user's saved app authentication recovery codes.
    
        return $this->app_authentication_recovery_codes;
    }

    /**
     * @param  array<string> | null  $codes
     */
    public function saveAppAuthenticationRecoveryCodes(?array $codes): void
    {
        // This method should save the user's app authentication recovery codes.
    
        $this->app_authentication_recovery_codes = $codes;
        $this->save();
    }
}

Finally, you should activate the app authentication recovery codes feature in your panel. To do this, pass the recoverable() method to the AppAuthentication instance in the multiFactorAuthentication() method in the configuration:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make()
                ->recoverable(),
        ]);
}

#Changing the number of recovery codes that are generated

By default, Filament generates 8 recovery codes for each user. If you want to change this, you can use the recoveryCodeCount() method on the AppAuthentication instance in the multiFactorAuthentication() method in the configuration:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make()
                ->recoverable()
                ->recoveryCodeCount(10),
        ]);
}

#Preventing users from regenerating their recovery codes

By default, users can visit their profile to regenerate their recovery codes. If you want to prevent this, you can use the regenerableRecoveryCodes(false) method on the AppAuthentication instance in the multiFactorAuthentication() method in the configuration:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make()
                ->recoverable()
                ->regenerableRecoveryCodes(false),
        ]);
}

#Changing the app code expiration time

App codes are issued using a time-based one-time password (TOTP) algorithm, which means that they are only valid for a short period of time before and after the time they are generated. The time is defined in a “window” of time. By default, Filament uses an expiration window of 8, which creates a 4-minute validity period on either side of the generation time (8 minutes in total).

To change the window, for example to only be valid for 2 minutes after it is generated, you can use the codeWindow() method on the AppAuthentication instance, set to 4:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make()
                ->codeWindow(4),
        ]);
}

#Customizing the app authentication brand name

Each app authentication integration has a “brand name” that is displayed in the authentication app. By default, this is the name of your app. If you want to change this, you can use the brandName() method on the AppAuthentication instance in the multiFactorAuthentication() method in the configuration:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make()
                ->brandName('Filament Demo'),
        ]);
}

#Email authentication

Email authentication sends the user one-time codes to their email address, which they must enter to verify their identity.

To enable email authentication in a panel, you must first add a new column to your users table (or whichever table is being used for your “authenticatable” Eloquent model in this panel). The column needs to store a boolean indicating whether or not email authentication is enabled:

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Schema::table('users', function (Blueprint $table) {
    $table->boolean('has_email_authentication')->default(false);
});

In the User model, you need to ensure that this column is cast to a boolean:

use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, MustVerifyEmail
{
    // ...
    /**
     * @var array<string, string>
     */
    protected $casts = [
        // ...
        'has_email_authentication' => 'boolean',
    ];
    
    // ...
}

Next, you should implement the HasEmailAuthentication interface on the User model. This provides Filament with the necessary methods to interact with the column that indicates whether or not email authentication is enabled:

use Filament\Auth\MultiFactor\Email\Contracts\HasEmailAuthentication;
use Filament\Models\Contracts\FilamentUser;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable implements FilamentUser, HasEmailAuthentication, MustVerifyEmail
{
    // ...

    public function hasEmailAuthentication(): bool
    {
        // This method should return true if the user has enabled email authentication.
        
        return $this->has_email_authentication;
    }

    public function toggleEmailAuthentication(bool $condition): void
    {
        // This method should save whether or not the user has enabled email authentication.
    
        $this->has_email_authentication = $condition;
        $this->save();
    }
}

Finally, you should activate the email authentication feature in your panel. To do this, use the multiFactorAuthentication() method in the configuration, and pass an EmailAuthentication instance to it:

use Filament\Auth\MultiFactor\Email\EmailAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            EmailAuthentication::make(),
        ]);
}

#Changing the email code expiration time

Email codes are issued with an lifetime of 4 minutes, after which they expire.

To change the expiration period, for example to only be valid for 2 minutes after codes are generated, you can use the codeExpiryMinutes() method on the EmailAuthentication instance, set to 2:

use Filament\Auth\MultiFactor\Email\EmailAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            EmailAuthentication::make()
                ->codeExpiryMinutes(2),
        ]);
}

#Requiring multi-factor authentication

By default, users are not required to set up multi-factor authentication. You can require users to configure it by passing isRequired: true as a parameter to the multiFactorAuthentication() method in the configuration:

use Filament\Auth\MultiFactor\App\AppAuthentication;
use Filament\Panel;

public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->multiFactorAuthentication([
            AppAuthentication::make(),
        ], isRequired: true);
}

When this is enabled, users will be prompted to set up multi-factor authentication after they sign in, if they have not already done so.

#Security notes about multi-factor authentication

In Filament, the multi-factor authentication process occurs before the user is actually authenticated into the app. This allows you to be sure that no users can authenticate and access the app without passing the multi-factor authentication step. You do not need to remember to add middleware to any of your authenticated routes to ensure that users completed the multi-factor authentication step.

However, if you have other parts of your Laravel app that authenticate users, please bear in mind that they will not be challenged for multi-factor authentication if they are already authenticated elsewhere and then visit the panel, unless multi-factor authentication is required and they have not set it up yet.

Edit on GitHub

Still need help? Join our Discord community or open a GitHub discussion