function encryptString($strString, $strPassword)
{
// $strString is the content of the entire file with serials
echo "strString: " . $strString . "<br/>";
echo "strPassword: "******"<br/>";
//$strPasswordMD5 = md5($strPassword);
$strPasswordMD5 = '00000000000000000000000000000000';
echo "strPasswordMD5: " . $strPasswordMD5 . "<br/>";
$intMD5Total = evalCrossTotal($strPasswordMD5);
echo "intMD5Total: " . $intMD5Total . "<br/>";
$arrEncryptedValues = array();
$intStrlen = strlen($strString);
echo "intStrlen: " . $intStrlen . "<br/>";
for ($i = 0; $i < $intStrlen; $i++) {
echo "i: " . $i . "<br/>";
$arrEncryptedValues[] = ord(substr($strString, $i, 1)) + ('0x0' . substr($strPasswordMD5, $i % 32, 1)) - $intMD5Total;
echo "ord: " . ord(substr($strString, $i, 1)) . "<br/>";
echo "substr(strPasswordMD5: " . ('0x0' . substr($strPasswordMD5, $i % 32, 1)) . "<br/>";
echo "intMD5Total: " . $intMD5Total . "<br/>";
$temp = ord(substr($strString, $i, 1)) + ('0x0' . substr($strPasswordMD5, $i % 32, 1)) - $intMD5Total;
echo "temp: " . $temp . "<br/>";
$intMD5Total = evalCrossTotal(substr(md5(substr($strString, 0, $i + 1)), 0, 16) . substr(md5($intMD5Total), 0, 16));
echo "newintMD5Total: " . $intMD5Total . "<br/><br/>";
}
return implode(' ', $arrEncryptedValues);
}
function encryptString($strString, $strPassword)
{
// $strString is the content of the entire file with serials
$strPasswordMD5 = md5($strPassword);
$intMD5Total = evalCrossTotal($strPasswordMD5);
$arrEncryptedValues = array();
$intStrlen = strlen($strString);
for ($i = 0; $i < $intStrlen; $i++) {
$arrEncryptedValues[] = ord(substr($strString, $i, 1)) + ('0x0' . substr($strPasswordMD5, $i % 32, 1)) - $intMD5Total;
$intMD5Total = evalCrossTotal(substr(md5(substr($strString, 0, $i + 1)), 0, 16) . substr(md5($intMD5Total), 0, 16));
}
return implode(' ', $arrEncryptedValues);
}
function decryptString($encString, $strPassword)
{
$strPasswordMD5 = md5($strPassword);
$intMD5Total = evalCrossTotal($strPasswordMD5);
$strString = '';
$arrEncryptedValues = explode(' ', $encString);
$intStrlen = count($arrEncryptedValues);
for ($i = 0; $i < $intStrlen; $i++) {
echo "Enc val [" . $i . "]:" . $arrEncryptedValues[$i] . "\n";
$strString .= chr(intval($arrEncryptedValues[$i]) - ('0x0' . substr($strPasswordMD5, $i % 32, 1)) + $intMD5Total);
//$strString .= chr('0x0'. substr($strPasswordMD5, $i%32, 1))
// ord <=> chr (ord gets decimal for ascii, chr returns ascii for decimal)
// implode explode (convert to integer with intval)
$intMD5Total = evalCrossTotal(substr(md5(substr($strString, 0, $i + 1)), 0, 16) . substr(md5($intMD5Total), 0, 16));
}
return $strString;
}