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<?php |
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/** |
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org) |
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org) |
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* |
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* Licensed under The MIT License |
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* For full copyright and license information, please see the LICENSE.txt |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org) |
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* @link http://cakephp.org CakePHP(tm) Project |
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* @license http://www.opensource.org/licenses/mit-license.php MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Phauthentic\PasswordHasher; |
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use RuntimeException; |
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/** |
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* A password hasher that can use multiple different hashes where only |
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* one is the preferred one. This is useful when trying to migrate an |
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* existing database of users from one password type to another. |
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*/ |
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class FallbackPasswordHasher extends AbstractPasswordHasher |
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{ |
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/** |
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* Holds the list of password hasher objects that will be used |
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* |
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* @var \Phauthentic\PasswordHasher\PasswordHasherCollectionInterface |
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*/ |
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protected $hashers; |
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/** |
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* Constructor |
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* |
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* @param \Phauthentic\PasswordHasher\PasswordHasherCollectionInterface $hasherCollection Hasher Collection |
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*/ |
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public function __construct(PasswordHasherCollectionInterface $hasherCollection) |
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{ |
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if ($hasherCollection->count() === 0) { |
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throw new RuntimeException('Your password hasher collection is empty. It must contain at least one hasher.'); |
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} |
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$this->hashers = $hasherCollection; |
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} |
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/** |
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* Adds a hasher |
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* |
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* @param PasswordHasherInterface $hasher Hasher instance. |
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* @return void |
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*/ |
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public function addHasher(PasswordHasherInterface $hasher): void |
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{ |
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$this->hashers->add($hasher); |
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} |
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/** |
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* Generates password hash. |
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* |
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* Uses the first password hasher in the list to generate the hash |
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* |
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* @param string $password Plain text password to hash. |
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* @return string Password hash |
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*/ |
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public function hash(string $password): string |
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{ |
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$password = $this->saltPassword($password); |
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return $this->hashers[0]->hash($password); |
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} |
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/** |
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* Verifies that the provided password corresponds to its hashed version |
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* |
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* This will iterate over all configured hashers until one of them returns |
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* true. |
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* |
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* @param string $password Plain text password to hash. |
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* @param string $hashedPassword Existing hashed password. |
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* @return bool True if hashes match else false. |
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*/ |
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public function check(string $password, string $hashedPassword): bool |
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{ |
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$password = $this->saltPassword($password); |
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/* @var $hasher \Phauthentic\PasswordHasher\PasswordHasherInterface */ |
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foreach ($this->hashers as $hasher) { |
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if ($hasher->check($password, $hashedPassword)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns true if the password need to be rehashed, with the first hasher present |
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* in the list of hashers |
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* |
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* @param string $password The password to verify |
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* @return bool |
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*/ |
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public function needsRehash(string $password): bool |
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{ |
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$password = $this->saltPassword($password); |
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return $this->hashers[0]->needsRehash($password); |
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} |
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} |
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Phauthentic /
password-hashers
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