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<?php |
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/** |
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* Password |
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* |
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* Password hashing. |
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* |
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* @package core |
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* @author [email protected] |
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* @copyright Caffeina srl - 2015 - http://caffeina.it |
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*/ |
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class Password { |
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use Module; |
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/** |
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* Create a secure password hash. |
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* @param string $password |
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* @return string |
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*/ |
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public static function make($password){ |
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// Pre PHP 5.5 support |
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if (!defined('PASSWORD_DEFAULT')) { |
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return '$5h$'.hash('sha1',$password); |
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} else { |
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return password_hash($password,PASSWORD_BCRYPT,['cost' => 12]); |
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} |
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} |
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/** |
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* Verify if password match a given hash |
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* @param string $password The password to check |
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* @param string $hash The hash to match against |
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* @return bool Returns `true` if hash match password |
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*/ |
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public static function verify($password, $hash){ |
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// Pre PHP 5.5 support |
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if (!defined('PASSWORD_DEFAULT') || substr($hash,0,4)=='$5h$') { |
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return '$5h$'.hash('sha1',$password) == $hash; |
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} else { |
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return password_verify($password,$hash); |
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} |
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} |
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/** |
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* Helper for secure time-constant string comparison |
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* Protect from time-based brute force attacks. |
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* @param string $a First string to compare |
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* @param string $b Second string to compare |
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* @return boll Returns `true` if strings are the same |
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*/ |
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public static function compare($a, $b){ |
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return hash_equals($a, $b); |
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} |
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} |
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// Polyfill hash_equals (PHP < 5.6.0) |
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// http://php.net/manual/en/function.hash-equals.php |
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if(!function_exists('hash_equals')) { |
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function hash_equals($a, $b) { |
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return substr_count("$a" ^ "$b", "\0") * 2 === strlen("$a$b"); |
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} |
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} |
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caffeina-core /
core
