Viewing file:  encdec.php (1.76 KB) -rw-rw-r--
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<?
/***********************************************************
* Class: Encrypt *
* Version: 1.1 *
* Date: September 2004 *
* Author: Agus Hariyanto *
* Copyright: © Agus H *
* Licence : Free for non-commercial use *
* email : [email protected] *
************************************************************/
class encdec
{
private $charx;
private $char;
public function decrypt($data,$key)
{
$key=md5($key);
$x=0;
for ($i=0;$i<strlen($data);$i++)
{
if ($x==strlen($key)) $x=0;
$this->char.=substr($key,$x,1);
$x++;
}
for ($i=0;$i<strlen($data);$i++)
{
if (ord(substr($data,$i,1))<ord(substr($this->char,$i,1)))
{
$this->charx.=chr((ord(substr($data,$i,1))+256)-ord(substr($this->char,$i,1)));
}
else
{
$this->charx.=chr(ord(substr($data,$i,1))-ord(substr($this->char,$i,1)));
}
}
return base64_decode($this->charx);
}
public function encrypt($data,$key)
{
$key=md5($key);
$data=base64_encode($data);
$x=0;
for ($i=0;$i<strlen($data);$i++)
{
if ($x==strlen($key)) $x=0;
$this->char.=substr($key,$x,1);
$x++;
}
for ($i=0;$i<strlen($data);$i++)
{
$this->charx.=chr(ord(substr($data,$i,1))+(ord(substr($this->char,$i,1)))%256);
}
return $this->charx;
}
}
?>
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