diff options
Diffstat (limited to 'pwhash.php')
-rw-r--r-- | pwhash.php | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/pwhash.php b/pwhash.php deleted file mode 100644 index 8ec4762..0000000 --- a/pwhash.php +++ /dev/null @@ -1,74 +0,0 @@ -<?php -/* - * File: ratatoeskr/sys/pwhash.php - * - * Hashing passwords - * - * License: - * This file is part of Ratatöskr. - * Ratatöskr is licensed unter the MIT / X11 License. - * See "ratatoeskr/licenses/ratatoeskr" for more information. - */ - -/* - * Class: PasswordHash - * Contains static functions for password hashes. - * Is just used as a namespace, can not be created. - * - * It should be fairly difficult to break these salted hashes via bruteforce attacks. - */ -class PasswordHash -{ - private function __construct() {} /* Prevent construction */ - - private static $saltlen_min = 20; - private static $saltlen_max = 30; - private static $iterations_min = 200; - private static $iterations_max = 1000; - - private static function hash($data, $salt, $iterations) - { - $hash = $data . $salt; - for($i = $iterations ;$i--;) - $hash = sha1($data . $hash . $salt, (bool) $i); - return $iterations . '$' . bin2hex($salt) . '$' . $hash; - } - - /* - * Function: create - * Create a password hash string. - * - * Parameters: - * $password - The password (or other data) to hash. - * - * Returns: - * The salted hash as a string. - */ - public static function create($password) - { - $salt = ""; - $saltlen = mt_rand(self::$saltlen_min, self::$saltlen_max); - for($i = 0; $i < $saltlen; $i++) - $salt .= chr(mt_rand(0,255)); - return self::hash($password, $salt, mt_rand(self::$iterations_min, self::$iterations_max)); - } - - /* - * Function: validate - * Validate a salted hash. - * - * Parameters: - * $password - The password to test. - * $pwhash - The hash to test against. - * - * Returns: - * True, if $password was correct, False otherwise. - */ - public static function validate($password, $pwhash) - { - list($iterations, $hexsalt, $hash) = explode('$', $pwhash); - return self::hash($password, pack("H*", $hexsalt), $iterations) == $pwhash; - } -} - -?> |