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Encode mysql entry

Posted on 2010-09-04
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Medium Priority
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Last Modified: 2013-12-13
Hi,

I use Dreamweaver and I like using their mysql recordsets (I know i should learn proper mysql but this is easier).

I want to encrypt all the information that is to be submited however I can't seem to figure it out. Can someone show me how to encode all the entries in the code below without changing too much of the code below?

It needs to be two-way encode. I think I need to use AES_ENCRYPT but willing to take any suggestion.

Thanks!

<?php
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = (!get_magic_quotes_gpc()) ? addslashes($theValue) : $theValue;

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}

if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form2")) {
  $insertSQL = sprintf("INSERT INTO creditcards (bookingid, cardholdername, address1, address2, town, postcode, cardnumber, validfrommonth, validfromyear, expirymonth, expiryyear, issuenumber, cvc, cardtype, dateadded, status) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)",
                       GetSQLValueString($_POST['bookingid'], "int"),
                       GetSQLValueString($_POST['cardholdername'], "text"),
                       GetSQLValueString($_POST['address1'], "text"),
                       GetSQLValueString($_POST['address2'], "text"),
                       GetSQLValueString($_POST['town'], "text"),
                       GetSQLValueString($_POST['postcode'], "text"),
                       GetSQLValueString($_POST['cardnumber'], "text"),
                       GetSQLValueString($_POST['validfrommonth'], "text"),
                       GetSQLValueString($_POST['validfromyear'], "text"),
                       GetSQLValueString($_POST['expirymonth'], "text"),
                       GetSQLValueString($_POST['expiryyear'], "text"),
                       GetSQLValueString($_POST['issue'], "text"),
                       GetSQLValueString($_POST['cvc'], "text"),
                       GetSQLValueString($_POST['cardtype'], "text"),
                       GetSQLValueString($_POST['dateadded'], "date"),
                       GetSQLValueString($_POST['status'], "int"));

  mysql_select_db($database_bookedy, $bookedy);
  $Result1 = mysql_query($insertSQL, $bookedy) or die(mysql_error());

  $insertGoTo = "step4.php?id=" . $row_booking['bookingid'] . "";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));
}
?>

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Comment
Question by:bookedy
3 Comments
 
LVL 5

Assisted Solution

by:onemadeye
onemadeye earned 1000 total points
ID: 33605830
'AES_ENCRYPT' and 'AES_DECRYPT' functions are MySQL functions as you know ...
and below is another solution you might want to try it out ..
it's playing around with SHA1 hash and base64.

Check it out ...

<?php

function rc4($key, $data)
{
	/* TAKEN FROM: http://nz2.php.net/manual/en/ref.mcrypt.php#87274 */
    // Store the vectors "S" has calculated
    static $SC;
    // Function to swaps values of the vector "S"
    $swap = create_function('&$v1, &$v2', '
        $v1 = $v1 ^ $v2;
        $v2 = $v1 ^ $v2;
        $v1 = $v1 ^ $v2;
    ');
    $ikey = crc32($key);
    if (!isset($SC[$ikey])) {
        // Make the vector "S", basead in the key
        $S    = range(0, 255);
        $j    = 0;
        $n    = strlen($key);
        for ($i = 0; $i < 255; $i++) {
            $char  = ord($key{$i % $n});
            $j     = ($j + $S[$i] + $char) % 256;
            $swap($S[$i], $S[$j]);
        }
        $SC[$ikey] = $S;
    } else {
        $S = $SC[$ikey];
    }
    // Crypt/decrypt the data
    $n    = strlen($data);
    $data = str_split($data, 1);
    $i    = $j = 0;
    for ($m = 0; $m < $n; $m++) {
        $i        = ($i + 1) % 256;
        $j        = ($j + $S[$i]) % 256;
        $swap($S[$i], $S[$j]);
        $char     = ord($data[$m]);
        $char     = $S[($S[$i] + $S[$j]) % 256] ^ $char;
        $data[$m] = chr($char);
    }
    return implode('', $data);
}

// Assign a random value for RC4 encryption
$random_value = 'f^jAE]okIOzU[2&q1{3"5w_794p@6s8?BgP>dFV=m D<TcS%Ze@lGK/uCy.Jx)HiQ!#$&;Lt-R}Ma,NvW+Ynb*0X';

// String to encrypted
$string = 'HeLLo woRld!';

echo '<b>String to encrypt:</b> '.$string;

echo '<br /><br />';

// ENCRYPTION PHASE
$is_enc = rc4($random_value,$string); // Output: K<3lð…Í·‚0
// add base64 encryption to ensure safe input to MySQL
$is_enc_b64 = base64_encode($is_enc); // Output: SzwRM2zwhc23go0w
echo '<b>ENCrypted string:</b> '.$is_enc_b64; 

echo '<br /><br />';

// DECRYPTION PHASE
$is_enc_b64 = base64_decode($is_enc_b64); // Output: SzwRM2zwhc23go0w
$is_dec = rc4($random_value,$is_enc_b64); // Output: HeLLo woRld!
echo '<b>DECrypted string:</b> '.$is_dec; 

?>

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Author Comment

by:bookedy
ID: 33606305
Hi!

I seem to have been able to get the information encrypted - now my problem is the decrypting.

I have the below script which i believe works as i have tested it in mysql however when i try to echo the result, I just get nothing.

mysql_select_db($database_bookedy, $bookedy);
$query_ccinfo = sprintf("SELECT creditid, bookingid, cardholdername, address1, address2, town, postcode, country, AES_DECRYPT(cardnumber,'passwordprotect') AS unencrypted, validfrommonth, validfromyear, expirymonth, expiryyear, issuenumber, cvc, cardtype, dateadded, datetobedeleted, status, adminnotes FROM creditcards WHERE creditid = '15'");

<?php echo $row_ccinfo['cardnumber']; ?>

I think the error is simply coming from the echo. If i echo any of the other information, it works fine. Any ideas?

Thanks!
0
 
LVL 111

Accepted Solution

by:
Ray Paseur earned 1000 total points
ID: 33606424
@bookedy:

This is a TERRIBLE idea.  Don't do it for anything you do not ABSOLUTELY have to encrypt.  The more you obscure, the more you will be confounded in your efforts to debug your code and provide tech support.

That said, let's look at this:

mysql_select_db($database_bookedy, $bookedy);
$query_ccinfo = sprintf("SELECT creditid, bookingid, cardholdername, address1, address2, town, postcode, country, AES_DECRYPT(cardnumber,'passwordprotect') AS unencrypted, validfrommonth, validfromyear, expirymonth, expiryyear, issuenumber, cvc, cardtype, dateadded, datetobedeleted, status, adminnotes FROM creditcards WHERE creditid = '15'");

<?php echo $row_ccinfo['cardnumber']; ?>

What is in $row_ccinfo?  Where did it get populated?  Can you please print out the entire contents of this array using var_dump() and post it here?  Thanks.
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