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<?php |
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/** |
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* Linna Framework. |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2017, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Linna\Authentication; |
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use Linna\Shared\ClassOptionsTrait; |
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/** |
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* Provide methods for manage password, this class use PHP password hashing function, |
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* see php documentation for more information. |
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* <a href="http://php.net/manual/en/book.password.php">http://php.net/manual/en/book.password.php</a> |
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*/ |
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class Password |
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{ |
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use ClassOptionsTrait; |
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/** |
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* @var array An associative array containing options |
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* |
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* http://php.net/manual/en/password.constants.php |
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*/ |
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protected $options = [ |
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'cost' => 11, |
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'algo' => PASSWORD_DEFAULT, |
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]; |
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/** |
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* Class constructor. |
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* <p><b>$options valid keys:</b></p> |
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* <table class="parameter"> |
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* <thead> |
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* <tr> |
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* <th>Name</th> |
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* <th>Default</th> |
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* <th>Description</th> |
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* </tr> |
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* </thead> |
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* <tbody> |
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* <tr> |
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* <td>cost</td> |
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* <td>11</td> |
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* <td>indicating key expansion rounds</td> |
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* </tr> |
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* <tr> |
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* <td>algo</td> |
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* <td>PASSWORD_DEFAULT</td> |
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* <td>password algorithm denoting the algorithm to use when hashing the password</td> |
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* </tr> |
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* </tbody> |
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* </table> |
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* <p>For password algorithm constants see <a href="http://php.net/manual/en/password.constants.php">Password Constants</a>.</p> |
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* <pre><code class="php">//Options passed to class constructor as ['key' => 'value'] array. |
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* $password = new Password([ |
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* 'cost' => 11, |
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* 'algo' => PASSWORD_DEFAULT, |
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* ]); |
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* </code></pre> |
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* |
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* @param array $options |
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*/ |
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public function __construct(array $options = []) |
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{ |
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//set options |
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$this->setOptions($options); |
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} |
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/** |
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* Verifies if a password matches an hash and return the result as boolean. |
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* <pre><code class="php">$password = new Password(); |
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* |
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* $storedHash = '$2y$11$cq3ZWO18l68X7pGs9Y1fveTGcNJ/iyehrDZ10BAvbY8LaBXNvnyk6'; |
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* $password = 'FooPassword'; |
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* |
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* $verified = $password->verify($password, $storedHash); |
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* </code></pre> |
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* |
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* @param string $password |
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* @param string $hash |
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* |
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* @return bool True if password match, false if not. |
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*/ |
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public function verify(string $password, string $hash): bool |
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{ |
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return password_verify($password, $hash); |
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} |
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/** |
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* Create password hash from the given string and return it. |
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* <pre><code class="php">$password = new Password(); |
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* |
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* $hash = $password->hash('FooPassword'); |
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* |
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* //var_dump result |
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* //$2y$11$cq3ZWO18l68X7pGs9Y1fveTGcNJ/iyehrDZ10BAvbY8LaBXNvnyk6 |
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* var_dump($hash) |
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* </code></pre> |
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* |
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* @param string $password |
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* |
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* @return string |
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*/ |
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public function hash(string $password): string |
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{ |
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//generate hash from password |
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return password_hash($password, $this->options['algo'], $this->options); |
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} |
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/** |
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* Checks if the given hash matches the algorithm and the options provided. |
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* <pre><code class="php">$password = new Password(); |
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* |
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* $hash = '$2y$11$cq3ZWO18l68X7pGs9Y1fveTGcNJ/iyehrDZ10BAvbY8LaBXNvnyk6'; |
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* |
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* //true if rehash is needed, false if no |
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* $rehashCheck = $password->needsRehash($hash); |
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* </code></pre> |
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* |
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* @param string $hash |
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* |
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* @return bool |
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*/ |
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public function needsRehash(string $hash): bool |
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{ |
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return password_needs_rehash($hash, $this->options['algo'], $this->options); |
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} |
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/** |
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* Returns information about the given hash. |
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* <pre><code class="php">$password = new Password(); |
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* |
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* $hash = '$2y$11$cq3ZWO18l68X7pGs9Y1fveTGcNJ/iyehrDZ10BAvbY8LaBXNvnyk6'; |
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* |
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* $info = $password->getInfo($hash); |
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* |
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* //var_dump result |
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* //[ |
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* // 'algo' => 1, |
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* // 'algoName' => 'bcrypt', |
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* // 'options' => [ |
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* // 'cost' => int 11 |
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* // ] |
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* //] |
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* var_dump($info); |
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* </code></pre> |
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* |
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* @param string $hash |
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* |
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* @return array |
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*/ |
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public function getInfo(string $hash) : array |
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{ |
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return password_get_info($hash); |
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} |
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} |
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