private void initCipherInput()
{
long inputLength;
using (CStreamReader reader = CipherInput.CreateReader())
{
inputLength = reader.Length;
reader.Read(prelBlock);
reader.Read(cipherBlock);
reader.Close();
}
for (int byteCounter = 0; byteCounter < blockSize; byteCounter++)
{
corruptedBlock[byteCounter] = prelBlock[byteCounter];
}
if (inputLength < 2 * blockSize)
{
curState = STATES.ERROR;
GuiLogMessage("Input Message too short. Please check if the Block Size is correct (in the Plugin Settings).", NotificationLevel.Error);
}
else if (inputLength > 2 * blockSize)
{
GuiLogMessage("The input message is longer than the expected length. Please check if the Block Size is correct (in the Plugin Settings).", NotificationLevel.Warning);
}
}
public static byte[] StreamToByteArray(ICrypToolStream stream)
{
byte[] buf = new byte[stream.Length];
CStreamReader reader = stream.CreateReader();
reader.WaitEof();
reader.Seek(0, System.IO.SeekOrigin.Begin);
reader.ReadFully(buf);
reader.Close();
return(buf);
}
private byte[] ConvertStreamToByteArray(ICryptoolStream stream)
{
CStreamReader reader = stream.CreateReader();
reader.WaitEof(); // does not support chunked streaming
if (reader.Length > settings.MaxLength)
{
AddMessage("WARNING - Stream is too large (" + (reader.Length / 1024).ToString("0.00") + " kB), output will be truncated to " + (settings.MaxLength / 1024).ToString("0.00") + "kB", NotificationLevel.Warning);
}
byte[] byteArray = new byte[Math.Min(settings.MaxLength, reader.Length)];
reader.Seek(0, SeekOrigin.Begin);
reader.ReadFully(byteArray, 0, byteArray.Length);
reader.Close();
return(byteArray);
}
public void Dispose()
{
if (sr != null)
{
sr.Close();
sr = null;
sys.Dispose();
sys = null;
ids.Dispose();
ids = null;
line = 0;
row = 0;
current = null;
handler = null;
typeMap = null;
}
GC.SuppressFinalize(this);
}
public void Execute()
{
//GuiLogMessage("PO exec", NotificationLevel.Info);
errorCode = 0;
try
{
ProgressChanged(0, 1);
using (CStreamReader reader = DecryptedInputStream.CreateReader())
{
errorCode = 1;
blockSize = System.Convert.ToInt16(reader.Length / 2);
plainBlock = new byte[blockSize];
errorCode = 2;
//read input
reader.Read(plainBlock); //first block -> ignore
reader.Read(plainBlock);
reader.Close();
}
errorCode = 3;
bool validPadding = true;
byte[] result = new byte[1];
//expected padding length = value of last byte
paddingLength = System.Convert.ToInt16(plainBlock[blockSize - 1]);
if (paddingLength == 0 || paddingLength > blockSize) //check if paddingLen is invalid
{
validPadding = false;
}
else //padding length is valid
{
//go through all supposed padding bytes and check if they all have the correct value
int wordCounter = 1;
while (validPadding && wordCounter < paddingLength)
{
if (plainBlock[blockSize - 1 - wordCounter] != paddingLength)
{
validPadding = false;
}
wordCounter++;
}
}
errorCode = 4;
//Update Presentation Layer
plainBlockStr = System.BitConverter.ToString(plainBlock);
plainBlockStr = plainBlockStr.Replace("-", " ");
errorCode = 6;
setPadPointer();
errorCode = 7;
setContent();
errorCode = 85;
errorCode = 9;
double minVal = Math.Min(18 - blockSize, 10);
minVal /= 10;
Presentation.Dispatcher.Invoke(DispatcherPriority.Normal, (SendOrPostCallback) delegate
{
pres.showPaddingImg(validPadding);
pres.viewByteScroller.Minimum = minVal;
}, null);
isInitiated = true;
PaddingResult = validPadding;
OnPropertyChanged("PaddingResult");
}
catch (System.Exception e)
{
GuiLogMessage("PO error: " + errorCode, NotificationLevel.Error);
}
ProgressChanged(1, 1);
}