//Decrypt
public string Decrypt(string inputText, int key)
{
key1 = key;
key2 = (int)Math.Floor((double)(key1 * inputText.Length / 10));
substitution = new Rot(key);
transposition = new Transposition(key);
string transText;
string outputText;
transText = substitution.Decrypt(inputText);
outputText = transposition.Decrypt(transText);
return(outputText);
}
//Start Encrypt & DecryptS
private void Start_Click(object sender, EventArgs e)
{
#region Caesar Encrypt & Decrypt
if (DropDown.SelectedIndex == 1 && Encrypt.Checked == true)
{
Output.Text = activeSub.Encrypt(Input.Text);
}
if (DropDown.SelectedIndex == 1 && Decrypt.Checked == true)
{
Output.Text = activeSub.Decrypt(Input.Text);
}
#endregion
#region Rot Encrypt & Decrypt
if (DropDown.SelectedIndex == 2 && Encrypt.Checked == true)
{
activeSub = new Rot(Convert.ToInt32(CustomParameter.Text));
Output.Text = activeSub.Encrypt(Input.Text);
}
if (DropDown.SelectedIndex == 2 && Decrypt.Checked == true)
{
activeSub = new Rot(Convert.ToInt32(CustomParameter.Text));
Output.Text = activeSub.Decrypt(Input.Text);
}
#endregion
#region Rot13 Encrypt & Decrypt
if (DropDown.SelectedIndex == 3 && Encrypt.Checked == true)
{
Output.Text = activeSub.Encrypt(Input.Text);
}
if (DropDown.SelectedIndex == 3 && Decrypt.Checked == true)
{
Output.Text = activeSub.Decrypt(Input.Text);
}
#endregion
#region Vigenere Encrypt & Decrypt
if (DropDown.SelectedIndex == 4 && Encrypt.Checked == true)
{
Output.Text = v.Encrypt(Input.Text, CustomParameter.Text);
}
if (DropDown.SelectedIndex == 4 && Decrypt.Checked == true)
{
Output.Text = v.Decrypt(Input.Text, CustomParameter.Text);
}
#endregion
#region Transposition Encrypt & Decrypt
if (DropDown.SelectedIndex == 5 && Encrypt.Checked == true)
{
t = new Transposition(Convert.ToInt32(CustomParameter.Text));
Output.Text = t.Encrypt(Input.Text);
}
if (DropDown.SelectedIndex == 5 && Decrypt.Checked == true)
{
t = new Transposition(Convert.ToInt32(CustomParameter.Text));
Output.Text = t.Decrypt(Input.Text);
}
#endregion
#region AES Encrypt & Decrypt
if (DropDown.SelectedIndex == 6 && Encrypt.Checked == true)
{
//Variables
string key = CustomParameter.Text;
string IV = CustomParameterTwo.Text;
//Vailid Key and IV length ?
if (key.Length != 32 || IV.Length != 16)
{
MessageBox.Show("Invaild Key or IV. IV Size: 16, Key Size: 32");
}
//Encrpt Text
AES_CBC aes = new AES_CBC(key, IV);
Output.Text = aes.Encrypt(Input.Text);
}
if (DropDown.SelectedIndex == 6 && Decrypt.Checked == true)
{
//Variables
string key = CustomParameter.Text;
string IV = CustomParameterTwo.Text;
//Vailid Key and IV length?
if (key.Length != 32 || IV.Length != 16)
{
MessageBox.Show("Invaild Key or IV. IV Size: 16, Key Size: 32");
}
//Decrypt
AES_CBC aes = new AES_CBC(key, IV);
try
{
Output.Text = aes.Decrypt(Input.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
#endregion
#region PaulCryption Encrypt & Decrypt
if (DropDown.SelectedIndex == 7 && Encrypt.Checked == true)
{
Output.Text = pc.Encrypt(Input.Text, Convert.ToInt32(CustomParameter.Text));
}
if (DropDown.SelectedIndex == 7 && Decrypt.Checked == true)
{
Output.Text = pc.Decrypt(Input.Text, Convert.ToInt32(CustomParameter.Text));
}
#endregion
}