minor #15307 [Security] Renamed encoders to password_hashers (javiereguiluz)

This PR was squashed before being merged into the 5.3-dev branch.

Discussion
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[Security] Renamed encoders to password_hashers

Fixes #14966.

Commits
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1425b95 [Security] Renamed encoders to password_hashers

Author: javiereguiluz

_build/redirection_map

@@ -514,3 +514,4 @@
 /service_container/3.3-di-changes https://symfony.com/doc/3.4/service_container/3.3-di-changes.html
 /frontend/encore/shared-entry /frontend/encore/split-chunks
 /testing/functional_tests_assertions /testing#testing-application-assertions
+/security/named_encoders /security/named_hashers

components/security/authentication.rst

@@ -121,12 +121,12 @@ the given password is valid.
 
 This functionality is offered by the :class:`Symfony\\Component\\Security\\Core\\Authentication\\Provider\\DaoAuthenticationProvider`.
 It fetches the user's data from a :class:`Symfony\\Component\\Security\\Core\\User\\UserProviderInterface`,
-uses a :class:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface`
+uses a :class:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasherInterface`
 to create a hash of the password and returns an authenticated token if the
 password was valid::
 
+    use Symfony\Component\PasswordHasher\Hasher\PasswordHasherFactoryInterface;
     use Symfony\Component\Security\Core\Authentication\Provider\DaoAuthenticationProvider;
-    use Symfony\Component\Security\Core\Encoder\EncoderFactory;
     use Symfony\Component\Security\Core\User\InMemoryUserProvider;
     use Symfony\Component\Security\Core\User\UserChecker;
 
@@ -145,14 +145,14 @@ password was valid::
     // for some extra checks: is account enabled, locked, expired, etc.
     $userChecker = new UserChecker();
 
-    // an array of password encoders (see below)
-    $encoderFactory = new EncoderFactory(...);
+    // an array of password hashers (see below)
+    $hasherFactory = new PasswordHasherFactoryInterface(...);
 
     $daoProvider = new DaoAuthenticationProvider(
         $userProvider,
         $userChecker,
         'secured_area',
-        $encoderFactory
+        $hasherFactory
     );
 
     $daoProvider->authenticate($unauthenticatedToken);
@@ -165,96 +165,105 @@ password was valid::
     It is also possible to let multiple user providers try to find the user's
     data, using the :class:`Symfony\\Component\\Security\\Core\\User\\ChainUserProvider`.
 
-The Password Encoder Factory
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.. _the-password-encoder-factory:
+
+The Password Hasher Factory
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The :class:`Symfony\\Component\\Security\\Core\\Authentication\\Provider\\DaoAuthenticationProvider`
-uses an encoder factory to create a password encoder for a given type of
-user. This allows you to use different encoding strategies for different
-types of users. The default :class:`Symfony\\Component\\Security\\Core\\Encoder\\EncoderFactory`
-receives an array of encoders::
+uses a factory to create a password hasher for a given type of user. This allows
+you to use different hashing strategies for different types of users.
+The default :class:`Symfony\\Component\\PasswordHasher\\Hasher\\PasswordHasherFactory`
+receives an array of hashers::
 
     use Acme\Entity\LegacyUser;
-    use Symfony\Component\Security\Core\Encoder\EncoderFactory;
-    use Symfony\Component\Security\Core\Encoder\MessageDigestPasswordEncoder;
+    use Symfony\Component\PasswordHasher\Hasher\MessageDigestPasswordHasher;
+    use Symfony\Component\PasswordHasher\Hasher\PasswordHasherFactory;
     use Symfony\Component\Security\Core\User\InMemoryUser;
 
-    $defaultEncoder = new MessageDigestPasswordEncoder('sha512', true, 5000);
-    $weakEncoder = new MessageDigestPasswordEncoder('md5', true, 1);
+    $defaultHasher = new MessageDigestPasswordHasher('sha512', true, 5000);
+    $weakHasher = new MessageDigestPasswordHasher('md5', true, 1);
 
-    $encoders = [
-        InMemoryUser::class => $defaultEncoder,
-        LegacyUser::class   => $weakEncoder,
+    $hashers = [
+        InMemoryUser::class => $defaultHasher,
+        LegacyUser::class   => $weakHasher,
         // ...
     ];
-    $encoderFactory = new EncoderFactory($encoders);
+    $hasherFactory = new PasswordHasherFactory($hashers);
 
-Each encoder should implement :class:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface`
+Each hasher should implement :class:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasherInterface`
 or be an array with a ``class`` and an ``arguments`` key, which allows the
-encoder factory to construct the encoder only when it is needed.
+hasher factory to construct the hasher only when it is needed.
+
+.. _creating-a-custom-password-encoder:
 
-Creating a custom Password Encoder
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Creating a custom Password Hasher
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-There are many built-in password encoders. But if you need to create your
+There are many built-in password hasher. But if you need to create your
 own, it needs to follow these rules:
 
-#. The class must implement :class:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface`
-   (you can also extend :class:`Symfony\\Component\\Security\\Core\\Encoder\\BasePasswordEncoder`);
+#. The class must implement :class:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasherInterface`
+   (you can also extend :class:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasher`);
 
 #. The implementations of
-   :method:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface::encodePassword`
+   :method:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasherInterface::hashPassword`
    and
-   :method:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface::isPasswordValid`
+   :method:`Symfony\\Component\\PasswordHasher\\Hasher\\UserPasswordHasherInterface::isPasswordValid`
    must first of all make sure the password is not too long, i.e. the password length is no longer
    than 4096 characters. This is for security reasons (see `CVE-2013-5750`_), and you can use the
-   :method:`Symfony\\Component\\Security\\Core\\Encoder\\BasePasswordEncoder::isPasswordTooLong`
+   :method:`Symfony\\Component\\PasswordHasher\\Hasher\\CheckPasswordLengthTrait::isPasswordTooLong`
    method for this check::
 
-       use Symfony\Component\Security\Core\Encoder\BasePasswordEncoder;
+       use Symfony\Component\PasswordHasher\Hasher\CheckPasswordLengthTrait;
+       use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasher;
        use Symfony\Component\Security\Core\Exception\BadCredentialsException;
 
-       class FoobarEncoder extends BasePasswordEncoder
+       class FoobarHasher extends UserPasswordHasher
        {
-           public function encodePassword($raw, $salt)
+           use CheckPasswordLengthTrait;
+
+           public function hashPassword(UserInterface $user, string $plainPassword): string
            {
-               if ($this->isPasswordTooLong($raw)) {
+               if ($this->isPasswordTooLong($user->getPassword())) {
                    throw new BadCredentialsException('Invalid password.');
                }
 
                // ...
            }
 
-           public function isPasswordValid($encoded, $raw, $salt)
+           public function isPasswordValid(UserInterface $user, string $plainPassword)
            {
-               if ($this->isPasswordTooLong($raw)) {
+               if ($this->isPasswordTooLong($user->getPassword())) {
                    return false;
                }
 
                // ...
            }
        }
 
-Using Password Encoders
-~~~~~~~~~~~~~~~~~~~~~~~
+.. _using-password-encoders:
 
-When the :method:`Symfony\\Component\\Security\\Core\\Encoder\\EncoderFactory::getEncoder`
-method of the password encoder factory is called with the user object as
-its first argument, it will return an encoder of type :class:`Symfony\\Component\\Security\\Core\\Encoder\\PasswordEncoderInterface`
-which should be used to encode this user's password::
+Using Password Hashers
+~~~~~~~~~~~~~~~~~~~~~~
+
+When the :method:`Symfony\\Component\\PasswordHasher\\Hasher\\PasswordHasherFactory::getPasswordHasher`
+method of the password hasher factory is called with the user object as
+its first argument, it will return a hasher of type :class:`Symfony\\Component\\PasswordHasher\\PasswordHasherInterface`
+which should be used to hash this user's password::
 
     // a Acme\Entity\LegacyUser instance
     $user = ...;
 
     // the password that was submitted, e.g. when registering
     $plainPassword = ...;
 
-    $encoder = $encoderFactory->getEncoder($user);
+    $hasher = $hasherFactory->getPasswordHasher($user);
 
-    // returns $weakEncoder (see above)
-    $encodedPassword = $encoder->encodePassword($plainPassword, $user->getSalt());
+    // returns $weakHasher (see above)
+    $hashedPassword = $hasher->hashPassword($user, $plainPassword);
 
-    $user->setPassword($encodedPassword);
+    $user->setPassword($hashedPassword);
 
     // ... save the user
 
@@ -267,11 +276,7 @@ in) is correct, you can use::
     // the submitted password, e.g. from the login form
     $plainPassword = ...;
 
-    $validPassword = $encoder->isPasswordValid(
-        $user->getPassword(), // the encoded password
-        $plainPassword,       // the submitted password
-        $user->getSalt()
-    );
+    $validPassword = $hasher->isPasswordValid($user, $plainPassword);
 
 Authentication Events
 ---------------------