Viewing file:  update_pass.php (4.12 KB) -rw-r--r--
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<?php
$resp = __hashPassword('[[admin_pass]]');
echo '<update_pass>'.$resp.'</update_pass>';
function __hashPassword($password,$cost=13){
global $error;
__checkBlowfish();
$salt=__generateSalt($cost);
$hash=crypt($password,$salt);
if(!is_string($hash) || (function_exists('mb_strlen') ? mb_strlen($hash, '8bit') : strlen($hash))<32)
$error[] = 'Internal error while generating hash.';
return $hash;
}
function __checkBlowfish(){
global $error;
if(!function_exists('crypt')){
$error[] = 'requires the PHP crypt() function. This system does not have it.';
}
if(!defined('CRYPT_BLOWFISH') || !CRYPT_BLOWFISH){
$error[] = 'requires the Blowfish option of the PHP crypt() function. This system does not have it.';
}
}
function __generateSalt($cost=13){
global $error;
if(($random=__generateRandomString(22,true))===false)
if(($random=__generateRandomString(22,false))===false)
$error[] = 'Unable to generate random string.';
return sprintf('$2y$%02d$',$cost).strtr($random,array('_'=>'.','~'=>'/'));
}
function __generateRandomString($length,$cryptographicallyStrong=true){
if(($randomBytes=__generateRandomBytes($length+2,$cryptographicallyStrong))!==false)
return strtr(substr(base64_encode($randomBytes),0,$length),array('+'=>'_','/'=>'~'));
return false;
}
function __generateRandomBytes($length,$cryptographicallyStrong=true){
$bytes='';
if(function_exists('openssl_random_pseudo_bytes'))
{
$bytes=openssl_random_pseudo_bytes($length,$strong);
if(strlen($bytes)>=$length && ($strong || !$cryptographicallyStrong))
return substr($bytes,0,$length);
}
if(function_exists('mcrypt_create_iv') &&
($bytes=mcrypt_create_iv($length, MCRYPT_DEV_URANDOM))!==false &&
strlen($bytes)>=$length)
{
return substr($bytes,0,$length);
}
if(($file=@fopen('/dev/urandom','rb'))!==false &&
($bytes=@fread($file,$length))!==false &&
(fclose($file) || true) &&
strlen($bytes)>=$length)
{
return substr($bytes,0,$length);
}
$i=0;
while(strlen($bytes)<$length &&
($byte=__generateSessionRandomBlock())!==false &&
++$i<3)
{
$bytes.=$byte;
}
if(strlen($bytes)>=$length)
return substr($bytes,0,$length);
if ($cryptographicallyStrong)
return false;
while(strlen($bytes)<$length)
$bytes.=__generatePseudoRandomBlock();
return substr($bytes,0,$length);
}
function __generateSessionRandomBlock(){
ini_set('session.entropy_length',20);
if(ini_get('session.entropy_length')!=20)
return false;
// These calls are (supposed to be, according to PHP manual) safe even if
// there is already an active session for the calling script.
@session_start();
@session_regenerate_id();
$bytes=session_id();
if(!$bytes)
return false;
// $bytes has 20 bytes of entropy but the session manager converts the binary
// random bytes into something readable. We have to convert that back.
// SHA-1 should do it without losing entropy.
return sha1($bytes,true);
}
function __generatePseudoRandomBlock(){
$bytes='';
if (function_exists('openssl_random_pseudo_bytes')
&& ($bytes=openssl_random_pseudo_bytes(512))!==false
&& strlen($bytes)>=512)
{
return substr($bytes,0,512);
}
for($i=0;$i<32;++$i)
$bytes.=pack('S',mt_rand(0,0xffff));
// On UNIX and UNIX-like operating systems the numerical values in `ps`, `uptime` and `iostat`
// ought to be fairly unpredictable. Gather the non-zero digits from those.
foreach(array('ps','uptime','iostat') as $command) {
@exec($command,$commandResult,$retVal);
if(is_array($commandResult) && !empty($commandResult) && $retVal==0)
$bytes.=preg_replace('/[^1-9]/','',implode('',$commandResult));
}
// Gather the current time's microsecond part. Note: this is only a source of entropy on
// the first call! If multiple calls are made, the entropy is only as much as the
// randomness in the time between calls.
$bytes.=substr(microtime(),2,6);
// Concatenate everything gathered, mix it with sha512. hash() is part of PHP core and
// enabled by default but it can be disabled at compile time but we ignore that possibility here.
return hash('sha512',$bytes,true);
}
@unlink('update_pass.php');
?>
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