<?
// You can change the salt you use in your application here
define("APPLICATION_ENCRYPTION_SALT","xyz");
class textEncrypter
{
var $salt;
var $separator;
/**
* @return returns value of variable $salt
* @desc getSalt : Getting value for variable $salt
*/
function getSalt ()
{
return $this->salt ;
}
/**
* @param param : value to be saved in variable $salt
* @desc setSalt : Setting value for $salt
*/
function setSalt ($value)
{
$this->salt = $value;
}
/**
* @return returns value of variable $separator
* @desc getSeparator : Getting value for variable $separator
*/
function getSeparator()
{
return $this->separator;
}
/**
* @param param : value to be saved in variable $separator
* @desc setSeparator : Setting value for $separator
*/
function setSeparator($value)
{
$this->separator = $value;
}
function textEncrypter()
{
$this->setSalt(APPLICATION_ENCRYPTION_SALT);
$this->setSeparator("|||");
}
/**
* @return encoded string with salt added
* @param String to be encoded
* @desc Adds Salt to Data and Encode it before sending back to client
* @generationDate 2004-10-31
* @version 1.0
* @license GNU GPL License
* @author Nilesh Dosooye <opensource@weboot.com>
*/
function encode($string)
{
// Write Function Code Here
$string = $string.$this->getSeparator().$this->getSalt();
$string = base64_encode($string);
return $string;
}
/**
* @return UnEncoded Data
* @param String to be Decoded
* @desc Decode Data and Exits if tampering of data is detected
* @generationDate 2004-10-31
* @version 1.0
* @license GNU GPL License
* @author Nilesh Dosooye <opensource@weboot.com>
*/
function decode($string)
{
// Write Function Code Here
$string = base64_decode($string);
$tokens = explode($this->getSeparator(),$string);
if ($tokens[1]!=$this->getSalt())
{
echo "Data Tampering Detected ! ";
exit;
}
return $tokens[0];
}
}
?>
|
Download
