Sage Pay v3.00 Integration

Question

Can anyone help me incorporate the Sagepay v3.00 AES/CBC/PKCS#5 algorithm (encryption) into the following file. I\'m really struggling to understand how to include so that c

Answer 1

You could try this. I can't test it, so let me know how you get on.

    
    

    
    
    
    
    

    
{$msg}
    

    
    
    EOT;
    }

    exit;

    //
    // ---------------- Additional functions ------------
    //
    function simpleXor($InString, $Key) {
    $KeyList = array();
    $output = "";

    for($i = 0; $i < strlen($Key); $i++){
        $KeyList[$i] = ord(substr($Key, $i, 1));
    }
    for($i = 0; $i < strlen($InString); $i++) {
        $output.= chr(ord(substr($InString, $i, 1)) ^ ($KeyList[$i % strlen($Key)]));
    }

    return $output;
    }

    function base64Decode($scrambled) {
    // Initialise output variable
    $output = "";
    // Fix plus to space conversion issue
    $scrambled = str_replace(" ","+",$scrambled);
    // Do encoding
    $output = base64_decode($scrambled);
    // Return the result
    return $output;
    }


    #added by Rik

    function addPKCS5Padding($input)
    {
         $blockSize = 16;
         $padd = "";
         $length = $blockSize - (strlen($input) % $blockSize);
         for ($i = 1; $i <= $length; $i++)
    {
         $padd .= chr($length);
    }
         return $input . $padd;
    }

    function removePKCS5Padding($input)
    {
        $blockSize = 16;
        $padChar = ord($input[strlen($input) - 1]);
        $unpadded = substr($input, 0, (-1) * $padChar);
        return $unpadded;
    }


    function encryptAes($string, $key)
    {
        $string = addPKCS5Padding($string);
        $crypt = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $string, MCRYPT_MODE_CBC, $key);
        return  strtoupper(bin2hex($crypt));
    }


    function decryptAes($strIn, $password)
    {

    #Sagepay specific - remove the '@'
    $strIn = substr($strIn,1)

        $strInitVector = $password;
        $strIn = pack('H*', $hex);
        $string = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $password, $strIn, MCRYPT_MODE_CBC,$strInitVector);
        return removePKCS5Padding($string);
    }

    ?>