You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.4 KiB
97 lines
2.4 KiB
4 years ago
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Copyright (c) 2009-2019 F3::Factory/Bong Cosca, All rights reserved.
|
||
|
|
*
|
||
|
|
* This file is part of the Fat-Free Framework (http://fatfreeframework.com).
|
||
|
|
*
|
||
|
|
* This is free software: you can redistribute it and/or modify it under the
|
||
|
|
* terms of the GNU General Public License as published by the Free Software
|
||
|
|
* Foundation, either version 3 of the License, or later.
|
||
|
|
*
|
||
|
|
* Fat-Free Framework is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License along
|
||
|
|
* with Fat-Free Framework. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*
|
||
|
|
**/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Lightweight password hashing library (PHP 5.5+ only)
|
||
|
|
* @deprecated Use http://php.net/manual/en/ref.password.php instead
|
||
|
|
**/
|
||
|
|
class Bcrypt extends Prefab {
|
||
|
|
|
||
|
|
//@{ Error messages
|
||
|
|
const
|
||
|
|
E_CostArg='Invalid cost parameter',
|
||
|
|
E_SaltArg='Salt must be at least 22 alphanumeric characters';
|
||
|
|
//@}
|
||
|
|
|
||
|
|
//! Default cost
|
||
|
|
const
|
||
|
|
COST=10;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generate bcrypt hash of string
|
||
|
|
* @return string|FALSE
|
||
|
|
* @param $pw string
|
||
|
|
* @param $salt string
|
||
|
|
* @param $cost int
|
||
|
|
**/
|
||
|
|
function hash($pw,$salt=NULL,$cost=self::COST) {
|
||
|
|
if ($cost<4 || $cost>31)
|
||
|
|
user_error(self::E_CostArg,E_USER_ERROR);
|
||
|
|
$len=22;
|
||
|
|
if ($salt) {
|
||
|
|
if (!preg_match('/^[[:alnum:]\.\/]{'.$len.',}$/',$salt))
|
||
|
|
user_error(self::E_SaltArg,E_USER_ERROR);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$raw=16;
|
||
|
|
$iv='';
|
||
|
|
if (!$iv && extension_loaded('openssl'))
|
||
|
|
$iv=openssl_random_pseudo_bytes($raw);
|
||
|
|
if (!$iv)
|
||
|
|
for ($i=0;$i<$raw;$i++)
|
||
|
|
$iv.=chr(mt_rand(0,255));
|
||
|
|
$salt=str_replace('+','.',base64_encode($iv));
|
||
|
|
}
|
||
|
|
$salt=substr($salt,0,$len);
|
||
|
|
$hash=crypt($pw,sprintf('$2y$%02d$',$cost).$salt);
|
||
|
|
return strlen($hash)>13?$hash:FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if password is still strong enough
|
||
|
|
* @return bool
|
||
|
|
* @param $hash string
|
||
|
|
* @param $cost int
|
||
|
|
**/
|
||
|
|
function needs_rehash($hash,$cost=self::COST) {
|
||
|
|
list($pwcost)=sscanf($hash,"$2y$%d$");
|
||
|
|
return $pwcost<$cost;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Verify password against hash using timing attack resistant approach
|
||
|
|
* @return bool
|
||
|
|
* @param $pw string
|
||
|
|
* @param $hash string
|
||
|
|
**/
|
||
|
|
function verify($pw,$hash) {
|
||
|
|
$val=crypt($pw,$hash);
|
||
|
|
$len=strlen($val);
|
||
|
|
if ($len!=strlen($hash) || $len<14)
|
||
|
|
return FALSE;
|
||
|
|
$out=0;
|
||
|
|
for ($i=0;$i<$len;$i++)
|
||
|
|
$out|=(ord($val[$i])^ord($hash[$i]));
|
||
|
|
return $out===0;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|