public void DecodeSSC(string input, string startState, string taps, string output)
{
synchronousStreamCipher = new SynchronousStreamCipher(startState, taps);
var result = synchronousStreamCipher.Decrypt(input);
Assert.AreEqual(output, result);
}
private void SSCDecode(object sender, RoutedEventArgs e)
{
string seed = SSCSeedDecodeInput.Text;
string polynomial = SSCPolynomialDecodeInput.Text;
string word = SSCDecodeInput.Text;
SynchronousStreamCipher cipher = new SynchronousStreamCipher(seed, polynomial);
SSCDecodeOutput.Text = cipher.Decrypt(word);
}
public void DecryptTest()
{
List <bool> key = new List <bool> {
true, false, false, false, true, false, true, true, true
};
string input = "encrypted_ssc.bin";
string expected = "00101110101001101100111000101110";
SynchronousStreamCipher ssc = new SynchronousStreamCipher(key);
PrivateObject obj = new PrivateObject(ssc);
BitArray output = ssc.Decrypt(input);
string output_string = Convert.ToString(obj.Invoke("BitArrayToString", output));
Assert.AreEqual(output_string, expected);
}
private void encryptDecryptPressed(object sender, RoutedEventArgs e)
{
string buttonName = ((Button)sender).Name;
string userInput = mTextBox.Text.ToString();
string userKey = keyTextBox.Text.ToString();
string encrypted = "";
string decrypted = "";
bool normalDialog = true;
switch (currentAlgorithm)
{
case "RAIL_FENCE":
if (mTextBox.Text == "")
{
MessageBox.Show("Rail fence text input is empty. Please type in something.");
return;
}
if (validateRailfenceFields(keyTextBox.Text.ToString()))
{
int i = int.Parse(userKey);
rf = new RailFence(i);
encrypted = rf.Encrypt(userInput);
decrypted = rf.Decrypt(userInput);
}
break;
case "COLUMNAR_TRANSP":
if (mTextBox.Text == "")
{
MessageBox.Show("Columanr transp text input is empty. Please type in something.");
return;
}
int[] inputTab = parseColumnarTranspKey(userKey);
if (validateColumnarTranspkey(inputTab))
{
ct = new ColumnarTransposition(parseColumnarTranspKey(userKey));
encrypted = ct.Encrypt(userInput);
decrypted = ct.Decrypt(userInput);
}
else
{
return;
}
break;
case "MATRIX_TRANSP":
if (mTextBox.Text == "")
{
MessageBox.Show("Matrix transp text input is empty. Please type in something.");
return;
}
if (validateMatrixTransp(userKey))
{
mt = new MatrixTransp(parseMatrixTranspKey(userKey));
encrypted = mt.Encrypt(userInput);
decrypted = mt.Decrypt(userInput);
}
else
{
return;
}
break;
case "COLUMNAR_C":
if (mTextBox.Text == "")
{
MessageBox.Show("Matrix transp version C text input is empty. Please type in something.");
return;
}
if (validateMatrixTranspVerCKey(userKey) && validateMatrixTranspVerCWord(userInput))
{
ctc = new ColumnarTranspositionC(userKey);
encrypted = ctc.Encrypt(userInput);
decrypted = ctc.Decrypt(userInput);
}
else
{
return;
}
break;
case "ViGENERE":
if (mTextBox.Text == "")
{
MessageBox.Show("Winegret text input is empty. Please type in something.");
return;
}
if (validateVinegretKey(userKey) && validateVinegretWord(userInput))
{
vig = new Vigenere(userKey);
encrypted = vig.Encrypt(userInput);
decrypted = vig.Decrypt(userInput);
}
else
{
return;
}
break;
case "CEZAR":
if (mTextBox.Text == "")
{
MessageBox.Show("Cezar text input is empty. Please type in something.");
return;
}
if (validateCezarKey(userKey) && validateCezarWord(userInput))
{
int i = int.Parse(userKey);
cz = new Cezar(i);
encrypted = cz.Encrypt(userInput);
decrypted = cz.Decrypt(userInput);
}
else
{
return;
}
break;
case "SYNC":
if (syncFileName.Content.ToString() == " ")
{
MessageBox.Show("SYNC file input is empty. Please type in something.");
return;
}
if (keyTextBox.Text == "")
{
MessageBox.Show("SYNC key text input is empty. Please type in something.");
return;
}
if (!syncKeyGenerated)
{
MessageBox.Show("SYNC key needs to be generated first, please press run and then stop button before proceeding.");
return;
}
normalDialog = false;
synchronousStreamCipher = new SynchronousStreamCipher(lsfrGen.GetSequence());
TextWriter tw = new StreamWriter("LFSR KEY USED.txt");
List <bool> listOfBools = lsfrGen.GetSequence();
char boolOutcome = ' ';
string boolOutcomeCollection = "";
int ij = 0;
foreach (bool b in listOfBools)
{
if (b == true)
{
boolOutcome = '1';
}
else
{
boolOutcome = '0';
}
boolOutcomeCollection += boolOutcome;
ij++;
if (ij > 100)
{
ij = 0;
tw.WriteLine(boolOutcomeCollection);
boolOutcomeCollection = "";
}
}
tw.WriteLine(boolOutcomeCollection);
tw.Close();
if (buttonName == "encrypt")
{
synchronousStreamCipher.Encrypt(syncFileName.Content.ToString());
}
else
{
synchronousStreamCipher.Decrypt(syncFileName.Content.ToString());
}
MessageBox.Show("Encrypted/decrypted file is located in folder where your .exe file is ( most probably bin/debug ). You will also find text file that contains LFSR key in it there.");
break;
case "DES":
if (syncFileName.Content.ToString() == " ")
{
MessageBox.Show("DES file input is empty. Please type in something.");
return;
}
if (keyTextBox.Text == "")
{
MessageBox.Show("DES key text input is empty. Please type in something.");
return;
}
if (!validateDesKey(userKey))
{
return;
}
des = new DES(desKeyParsing(userKey));
if (buttonName == "encrypt")
{
des.EncryptFile(syncFileName.Content.ToString());
}
else
{
des.DecryptFile(syncFileName.Content.ToString());
}
MessageBox.Show("Encrypted/decrypted file is located in folder where your .exe file is ( most probably bin/debug ).");
break;
default:
break;
}
int length = encrypted.Length;
outcomeLabel.FontSize = 30;
if (length > 10)
{
outcomeLabel.FontSize = 20;
}
if (length > 20)
{
outcomeLabel.FontSize = 15;
}
if (normalDialog)
{
if (buttonName == "encrypt")
{
if (encrypted != "")
{
outcomeTypeLabel.Content = "Encrypted:";
}
outcomeLabel.Content = encrypted;
}
else
{
if (decrypted != "")
{
outcomeTypeLabel.Content = "Decrypted:";
}
outcomeLabel.Content = decrypted;
}
}
else
{
}
}