public static byte[] Encrypt(byte[] data)
{
byte[] response = null;
if (util.IsValidXML((data)).Equals(false))
{
MessageBox.Show("Not a valid config file...", "Confirmation", MessageBoxButton.OK, MessageBoxImage.Error);
return(null);
}
byte[] clearText = data;
try
{
byte[] comp = Zlib.CompressData(clearText);
response = AESHelper(KEY[0], IV[0], comp); // use v2 key, v3 can read configs that are encrypted with the v2 key
}
catch (Exception ex)
{
LogManager.WriteToLog(ex.ToString());
MessageBox.Show("unable to encrypt config file", "Confirmation", MessageBoxButton.OK, MessageBoxImage.Error);
return(null);
}
return(response);
}
public static byte[] Decrypt(byte[] clearText)
{
byte[] response = new byte[0];
byte[] data;
for (int x = 0; x < KEY.Length; x++)
{
try
{
byte[] key = KEY[x];
byte[] iv = IV[x];
data = AESHelper(key, iv, clearText, true);
var d = Zlib.DecompressData(data);
Array.Resize(ref response, d.Length);
Array.Copy(d, response, d.Length);
}
catch (Exception)
{
continue;
}
break;
}
if (response.Length == 0)
{
MessageBox.Show("unable to decrypt config file", "Confirmation", MessageBoxButton.OK, MessageBoxImage.Error);
return(null);
}
if (util.IsValidXML(response).Equals(false))
{
MessageBox.Show("Not a valid config file...", "Confirmation", MessageBoxButton.OK, MessageBoxImage.Error);
return(null);
}
return(response);
}