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MigratingPasswordHasher.php
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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\PasswordHasher\Hasher; use Symfony\Component\PasswordHasher\PasswordHasherInterface; /** * Hashes passwords using the best available hasher. * Verifies them using a chain of hashers. * * /!\ Don't put a PlaintextPasswordHasher in the list as that'd mean a leaked hash * could be used to authenticate successfully without knowing the cleartext password. * * @author Nicolas Grekas <p@tchwork.com> */ final class MigratingPasswordHasher implements PasswordHasherInterface { private PasswordHasherInterface $bestHasher; private array $extraHashers; public function __construct(PasswordHasherInterface $bestHasher, PasswordHasherInterface ...$extraHashers) { $this->bestHasher = $bestHasher; $this->extraHashers = $extraHashers; } public function hash(#[\SensitiveParameter] string $plainPassword, ?string $salt = null): string { return $this->bestHasher->hash($plainPassword, $salt); } public function verify(string $hashedPassword, #[\SensitiveParameter] string $plainPassword, ?string $salt = null): bool { if ($this->bestHasher->verify($hashedPassword, $plainPassword, $salt)) { return true; } if (!$this->bestHasher->needsRehash($hashedPassword)) { return false; } foreach ($this->extraHashers as $hasher) { if ($hasher->verify($hashedPassword, $plainPassword, $salt)) { return true; } } return false; } public function needsRehash(string $hashedPassword): bool { return $this->bestHasher->needsRehash($hashedPassword); } }