How to Create a custom Authentication Provider

// src/AppBundle/Security/Authentication/Token/WsseUserToken.php
namespace AppBundleSecurityAuthenticationToken;

use SymfonyComponentSecurityCoreAuthenticationTokenAbstractToken;

class WsseUserToken extends AbstractToken
{
    public $created;
    public $digest;
    public $nonce;

    public function __construct(array $roles = array())
    {
        parent::__construct($roles);

        // If the user has roles, consider it authenticated
        $this->setAuthenticated(count($roles) > 0);
    }

    public function getCredentials()
    {
        return '';
    }
}

// src/AppBundle/Security/Firewall/WsseListener.php
namespace AppBundleSecurityFirewall;

use SymfonyComponentHttpFoundationResponse;
use SymfonyComponentHttpKernelEventGetResponseEvent;
use SymfonyComponentSecurityCoreAuthenticationAuthenticationManagerInterface;
use SymfonyComponentSecurityCoreAuthenticationTokenStorageTokenStorageInterface;
use SymfonyComponentSecurityCoreExceptionAuthenticationException;
use SymfonyComponentSecurityHttpFirewallListenerInterface;
use AppBundleSecurityAuthenticationTokenWsseUserToken;

class WsseListener implements ListenerInterface
{
    protected $tokenStorage;
    protected $authenticationManager;

    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager)
    {
        $this->tokenStorage = $tokenStorage;
        $this->authenticationManager = $authenticationManager;
    }

    public function handle(GetResponseEvent $event)
    {
        $request = $event->getRequest();

        $wsseRegex = '/UsernameToken Username="([^"]+)", PasswordDigest="([^"]+)", Nonce="([^"]+)", Created="([^"]+)"/';
        if (!$request->headers->has('x-wsse') || 1 !== preg_match($wsseRegex, $request->headers->get('x-wsse'), $matches)) {
            return;
        }

        $token = new WsseUserToken();
        $token->setUser($matches[1]);

        $token->digest   = $matches[2];
        $token->nonce    = $matches[3];
        $token->created  = $matches[4];

        try {
            $authToken = $this->authenticationManager->authenticate($token);
            $this->tokenStorage->setToken($authToken);

            return;
        } catch (AuthenticationException $failed) {
            // ... you might log something here

            // To deny the authentication clear the token. This will redirect to the login page.
            // Make sure to only clear your token, not those of other authentication listeners.
            // $token = $this->tokenStorage->getToken();
            // if ($token instanceof WsseUserToken && $this->providerKey === $token->getProviderKey()) {
            //     $this->tokenStorage->setToken(null);
            // }
            // return;
        }

        // By default deny authorization
        $response = new Response();
        $response->setStatusCode(Response::HTTP_FORBIDDEN);
        $event->setResponse($response);
    }
}

// src/AppBundle/Security/Authentication/Provider/WsseProvider.php
namespace AppBundleSecurityAuthenticationProvider;

use SymfonyComponentSecurityCoreAuthenticationProviderAuthenticationProviderInterface;
use SymfonyComponentSecurityCoreUserUserProviderInterface;
use SymfonyComponentSecurityCoreExceptionAuthenticationException;
use SymfonyComponentSecurityCoreExceptionNonceExpiredException;
use SymfonyComponentSecurityCoreAuthenticationTokenTokenInterface;
use AppBundleSecurityAuthenticationTokenWsseUserToken;
use SymfonyComponentSecurityCoreUtilStringUtils;

class WsseProvider implements AuthenticationProviderInterface
{
    private $userProvider;
    private $cacheDir;

    public function __construct(UserProviderInterface $userProvider, $cacheDir)
    {
        $this->userProvider = $userProvider;
        $this->cacheDir     = $cacheDir;
    }

    public function authenticate(TokenInterface $token)
    {
        $user = $this->userProvider->loadUserByUsername($token->getUsername());

        if ($user && $this->validateDigest($token->digest, $token->nonce, $token->created, $user->getPassword())) {
            $authenticatedToken = new WsseUserToken($user->getRoles());
            $authenticatedToken->setUser($user);

            return $authenticatedToken;
        }

        throw new AuthenticationException('The WSSE authentication failed.');
    }

    /**
     * This function is specific to Wsse authentication and is only used to help this example
     *
     * For more information specific to the logic here, see
     * https://github.com/symfony/symfony-docs/pull/3134#issuecomment-27699129
     */
    protected function validateDigest($digest, $nonce, $created, $secret)
    {
        // Check created time is not in the future
        if (strtotime($created) > time()) {
            return false;
        }

        // Expire timestamp after 5 minutes
        if (time() - strtotime($created) > 300) {
            return false;
        }

        // Validate that the nonce is *not* used in the last 5 minutes
        // if it has, this could be a replay attack
        if (file_exists($this->cacheDir.'/'.$nonce) && file_get_contents($this->cacheDir.'/'.$nonce) + 300 > time()) {
            throw new NonceExpiredException('Previously used nonce detected');
        }
        // If cache directory does not exist we create it
        if (!is_dir($this->cacheDir)) {
            mkdir($this->cacheDir, 0777, true);
        }
        file_put_contents($this->cacheDir.'/'.$nonce, time());

        // Validate Secret
        $expected = base64_encode(sha1(base64_decode($nonce).$created.$secret, true));

        return StringUtils::equals($expected, $digest);
    }

    public function supports(TokenInterface $token)
    {
        return $token instanceof WsseUserToken;
    }
}

// src/AppBundle/DependencyInjection/Security/Factory/WsseFactory.php
namespace AppBundleDependencyInjectionSecurityFactory;

use SymfonyComponentDependencyInjectionContainerBuilder;
use SymfonyComponentDependencyInjectionReference;
use SymfonyComponentDependencyInjectionDefinitionDecorator;
use SymfonyComponentConfigDefinitionBuilderNodeDefinition;
use SymfonyBundleSecurityBundleDependencyInjectionSecurityFactorySecurityFactoryInterface;

class WsseFactory implements SecurityFactoryInterface
{
    public function create(ContainerBuilder $container, $id, $config, $userProvider, $defaultEntryPoint)
    {
        $providerId = 'security.authentication.provider.wsse.'.$id;
        $container
            ->setDefinition($providerId, new DefinitionDecorator('wsse.security.authentication.provider'))
            ->replaceArgument(0, new Reference($userProvider))
        ;

        $listenerId = 'security.authentication.listener.wsse.'.$id;
        $listener = $container->setDefinition($listenerId, new DefinitionDecorator('wsse.security.authentication.listener'));

        return array($providerId, $listenerId, $defaultEntryPoint);
    }

    public function getPosition()
    {
        return 'pre_auth';
    }

    public function getKey()
    {
        return 'wsse';
    }

    public function addConfiguration(NodeDefinition $node)
    {
    }
}

// src/AppBundle/AppBundle.php
namespace AppBundle;

use AppBundleDependencyInjectionSecurityFactoryWsseFactory;
use SymfonyComponentHttpKernelBundleBundle;
use SymfonyComponentDependencyInjectionContainerBuilder;

class AppBundle extends Bundle
{
    public function build(ContainerBuilder $container)
    {
        parent::build($container);

        $extension = $container->getExtension('security');
        $extension->addSecurityListenerFactory(new WsseFactory());
    }
}