symfony
diff --git a/‎src/Symfony/Bundle/SecurityBundle/CHANGELOG.md
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+5Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Bundle/SecurityBundle/CHANGELOG.md
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+5Lines changed: 5 additions & 0 deletions
diff --git a/‎src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
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+12Lines changed: 12 additions & 0 deletions b/‎src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
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+12Lines changed: 12 additions & 0 deletions
diff --git a/‎src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
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+12-3Lines changed: 12 additions & 3 deletions b/‎src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
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+12-3Lines changed: 12 additions & 3 deletions
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.4
+---
+
+ * Register alias for argument for password hasher when the key is not a class name
+
 7.3
 ---
 
 
@@ -49,6 +49,7 @@
 use Symfony\Component\PasswordHasher\Hasher\Pbkdf2PasswordHasher;
 use Symfony\Component\PasswordHasher\Hasher\PlaintextPasswordHasher;
 use Symfony\Component\PasswordHasher\Hasher\SodiumPasswordHasher;
+use Symfony\Component\PasswordHasher\PasswordHasherInterface;
 use Symfony\Component\Routing\Loader\ContainerLoader;
 use Symfony\Component\Security\Core\Authorization\Strategy\AffirmativeStrategy;
 use Symfony\Component\Security\Core\Authorization\Strategy\ConsensusStrategy;
@@ -706,6 +707,17 @@ private function createHashers(array $hashers, ContainerBuilder $container): voi
         $hasherMap = [];
         foreach ($hashers as $class => $hasher) {
             $hasherMap[$class] = $this->createHasher($hasher);
+            // The key is not a class, so we register an alias for argument to
+            // ease getting the hasher
+            if (!class_exists($class) && !interface_exists($class)) {
+                $id = 'security.password_hasher.'.$class;
+                $container
+                    ->register($id, PasswordHasherInterface::class)
+                    ->setFactory([new Reference('security.password_hasher_factory'), 'getPasswordHasher'])
+                    ->setArgument(0, $class)
+                ;
+                $container->registerAliasForArgument($id, PasswordHasherInterface::class, $class);
+            }
         }
 
         $container
 
@@ -29,6 +29,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestMatcher\PathRequestMatcher;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\PasswordHasher\PasswordHasherInterface;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\User\InMemoryUserChecker;
@@ -883,7 +884,7 @@ public function testCustomHasherWithMigrateFrom()
         $container->loadFromExtension('security', [
             'password_hashers' => [
                 'legacy' => 'md5',
-                'App\User' => [
+                TestUserChecker::class => [
                     'id' => 'App\Security\CustomHasher',
                     'migrate_from' => 'legacy',
                 ],
@@ -895,11 +896,19 @@ public function testCustomHasherWithMigrateFrom()
 
         $hashersMap = $container->getDefinition('security.password_hasher_factory')->getArgument(0);
 
-        $this->assertArrayHasKey('App\User', $hashersMap);
-        $this->assertEquals($hashersMap['App\User'], [
+        $this->assertArrayHasKey(TestUserChecker::class, $hashersMap);
+        $this->assertEquals($hashersMap[TestUserChecker::class], [
             'instance' => new Reference('App\Security\CustomHasher'),
             'migrate_from' => ['legacy'],
         ]);
+
+        $legacyAlias = \sprintf('%s $%s', PasswordHasherInterface::class, 'legacy');
+        $this->assertTrue($container->hasAlias($legacyAlias));
+        $definition = $container->getDefinition((string) $container->getAlias($legacyAlias));
+        $this->assertSame(PasswordHasherInterface::class, $definition->getClass());
+
+        $this->assertFalse($container->hasAlias(\sprintf('%s $%s', PasswordHasherInterface::class, 'symfonyBundleSecurityBundleTestsDependencyInjectionTestUserChecker')));
+        $this->assertFalse($container->hasAlias(\sprintf('.%s $%s', PasswordHasherInterface::class, TestUserChecker::class)));
     }
 
     public function testAuthenticatorsDecoration()