private String Decrypt(BlockInfo bi, String value)
{
//algo = new String[] { "RailFence", "MacierzoweA", "MacierzoweB", "MacierzoweC", "CezaraA", "CezaraB", "Vigenere" };
if (bi == null)
return "";
if (bi.EncryptMethod.Equals(algo[0]))
{
return RailFence.Decrypt(Convert.ToInt32(bi.keyOne), value);
}
else if (bi.EncryptMethod.Equals(algo[1]))
{
return MacierzoweA.Decrypt(bi.keyOne, value);
}
else if (bi.EncryptMethod.Equals(algo[2]))
{
return MacierzoweB.Decrypt(bi.keyOne, value);
}
else if (bi.EncryptMethod.Equals(algo[3]))
{
return MacierzoweC.Decrypt(bi.keyOne, value);
}
else if (bi.EncryptMethod.Equals(algo[4]))
{
return CezaraA.Decrypt(Convert.ToInt32(bi.keyOne), value);
}
else if (bi.EncryptMethod.Equals(algo[5]))
{
return CezaraB.Decrypt(Convert.ToInt32(bi.keyOne), Convert.ToInt32(bi.keyTwo), value);
}
else if (bi.EncryptMethod.Equals(algo[6]))
{
Vigenere v = new Vigenere(bi.keyOne);
return v.Encrypt(value);
}
return "";
}
private void setKeys(BlockInfo bi)
{
if (cbAlgorithms.SelectedItem.Equals(algo[5])) // CezaraB
{
bi.keyOne = Convert.ToString(numericUpDown1.Value);
bi.keyTwo = Convert.ToString(numericUpDown2.Value);
}
else if (cbAlgorithms.SelectedItem.Equals(algo[4]) || cbAlgorithms.SelectedItem.Equals(algo[0]))
{
bi.keyOne = Convert.ToString(numericUpDown3.Value);
}
else
{
bi.keyOne = textKey.Text;
}
//Console.WriteLine("Dodaje klucze dla: " + bi.ToString());
}
private void button2_Click(object sender, EventArgs e)
{
try
{
int rot = Convert.ToInt32(numericUpDown4.Value);
int bSize = Convert.ToInt32(numBlock.Value);
String txt = text.Text.Substring(startIndex, bSize);
for (int i = 0; i < rot; i++)
{
txt = Encrypt(txt);
}
BlockInfo bi = new BlockInfo(bSize, cbAlgorithms.SelectedItem.ToString(), rot);
setKeys(bi);
operations.Add(bi);
//textResult.Text += Encrypt(text.Text.Substring(startIndex, Convert.ToInt32(numBlock.Value)));
textResult.Text += txt;
startIndex += Convert.ToInt32(numBlock.Value);
}
catch (ArgumentOutOfRangeException)
{
if (startIndex < text.Text.Length)
{
int size = text.Text.Length;
int endIndex = size - startIndex;
int rot = Convert.ToInt32(numericUpDown4.Value);
String txt = text.Text.Substring(startIndex);
for (int i = 0; i < rot; i++)
{
txt = Encrypt(txt);
}
BlockInfo bi = new BlockInfo(endIndex, cbAlgorithms.SelectedItem.ToString(), rot);
setKeys(bi);
operations.Add(bi);
textResult.Text += txt;
//textResult.Text += Encrypt(text.Text.Substring(startIndex, endIndex - 1));
startIndex += endIndex;
}
}
labCount.Text = Convert.ToString(startIndex);
}
