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Commit 26dc85c

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zanbaldwinzanbaldwin
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Argon2i Password Encoder
Add/modify sections for the Argon2i password encoder (symfony/symfony#21604).
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‎best_practices/security.rst

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@@ -38,6 +38,13 @@ of ``bcrypt`` are the inclusion of a *salt* value to protect against rainbow
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table attacks, and its adaptive nature, which allows to make it slower to
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remain resistant to brute-force search attacks.
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.. note::
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:ref:`Argon2i <reference-security-argon2i>` is the hashing algorithm as
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recommended by industry standards, but this won't be available to you unless
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you are using PHP 7.2+ or have the `libsodium`_ extension installed.
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``bcrypt`` is sufficient for most applications.
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With this in mind, here is the authentication setup from our application,
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which uses a login form to load users from the database:
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@@ -393,3 +400,4 @@ develop :doc:`your own user provider </security/custom_provider>` and
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.. _`ParamConverter`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html
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.. _`@Security annotation`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/security.html
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.. _`FOSUserBundle`: https://github.com/FriendsOfSymfony/FOSUserBundle
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.. _`libsodium`: https://pecl.php.net/package/libsodium

‎doctrine/registration_form.rst

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@@ -132,7 +132,7 @@ With some validation added, your class may look something like this::
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public function getSalt()
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{
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// The bcrypt algorithm doesn't require a separate salt.
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// The bcrypt and argon2i algorithms don't require a separate salt.
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// You *may* need a real salt if you choose a different encoder.
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return null;
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}

‎reference/configuration/security.rst

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@@ -80,6 +80,10 @@ Each part will be explained in the next section.
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algorithm: plaintext
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ignore_case: false
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# Argon2i encoder
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Acme\DemoBundle\Entity\User6:
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algorithm: argon2i
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providers: # Required
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# Examples:
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my_in_memory_provider:
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.. note::
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All the encoded passwords are ``60`` characters long, so make sure to
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BCrypt encoded passwords are ``60`` characters long, so make sure to
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allocate enough space for them to be persisted.
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.. _reference-security-firewall-context:
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.. _reference-security-argon2i:
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Using the Argon2i Password Encoder
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----------------------------------
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.. caution::
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To use this encoder, you either need to use PHP version 7.2 or install
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the `libsodium`_ extension.
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.. configuration-block::
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.. code-block:: yaml
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# app/config/security.yml
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security:
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# ...
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encoders:
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Symfony\Component\Security\Core\User\User:
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algorithm: argon2i
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.. code-block:: xml
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<!-- app/config/security.xml -->
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<config>
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<!-- ... -->
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<encoder
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class="Symfony\Component\Security\Core\User\User"
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algorithm="argon2i"
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/>
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</config>
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.. code-block:: php
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// app/config/security.php
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use Symfony\Component\Security\Core\User\User;
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$container->loadFromExtension('security', array(
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// ...
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'encoders' => array(
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User::class => array(
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'algorithm' => 'argon2i',
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),
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),
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));
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A salt for each new password is generated automatically and need not be
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persisted. Since an encoded password contains the salt used to encode it,
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persisting the encoded password alone is enough.
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.. note::
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Argon2i encoded passwords are ``96`` characters long, but due to the hashing
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requirements saved in the resulting hash this may change in the future.
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.. _reference-security-firewall-context:
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Firewall Context
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----------------
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.. _`PBKDF2`: https://en.wikipedia.org/wiki/PBKDF2
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.. _`ircmaxell/password-compat`: https://packagist.org/packages/ircmaxell/password-compat
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.. _`libsodium`: https://pecl.php.net/package/libsodium

‎security.rst

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@@ -457,8 +457,8 @@ C) Encoding the User's Password
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Whether your users are stored in ``security.yml``, in a database or somewhere
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else, you'll want to encode their passwords. The best algorithm to use is
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``bcrypt``:
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else, you'll want to encode their passwords. The most suitable algorithm to use
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is ``bcrypt``:
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.. configuration-block::
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Supported algorithms for this method depend on your PHP version, but
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include the algorithms returned by the PHP function :phpfunction:`hash_algos`
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as well as a few others (e.g. bcrypt). See the ``encoders`` key in the
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:doc:`Security Reference Section </reference/configuration/security>`
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as well as a few others (e.g. bcrypt and argon2i). See the ``encoders`` key
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in the :doc:`Security Reference Section </reference/configuration/security>`
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for examples.
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It's also possible to use different hashing algorithms on a user-by-user

‎security/named_encoders.rst

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@@ -101,6 +101,12 @@ named encoders:
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),
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));
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.. note::
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If you are running PHP 7.2+ or have the `libsodium`_ extension installed,
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then the recommended hashing algorithm to use is
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:ref:`Argon2i <reference-security-argon2i>`.
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This creates an encoder named ``harsh``. In order for a ``User`` instance
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to use it, the class must implement
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:class:`Symfony\\Component\\Security\\Core\\Encoder\\EncoderAwareInterface`.
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return null; // use the default encoder
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}
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}
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.. _`libsodium`: https://pecl.php.net/package/libsodium

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