function _BF_SUB32($x, $y)
{
return _BF_ADD32($x, -$y);
}
private function decrypt($encrypted_password)
{
$encrypted_password = trim($encrypted_password);
if (!strlen($encrypted_password)) {
return '';
}
$encrypted_password = int3tostr($encrypted_password);
$c = 0x12;
for ($i = 0; $i < strlen($encrypted_password); $i++) {
$k = ord($encrypted_password[$i]);
$encrypted_password[$i] = chr(ord($encrypted_password[$i]) ^ $c >> 8);
$c = _BF_ADD32($k, $c);
$c = _BF_ADD32($c, $c);
$c = _BF_ADD32($c, 4);
}
return $encrypted_password;
}