private void BtnDecrypt_Click(object sender, EventArgs e)
{
TypesOfCiphers typesOfCipher = TypesOfCiphers.RailFence;
if (rbRailFence.Checked)
{
typesOfCipher = TypesOfCiphers.RailFence;
}
else if (rbRotatingSquare.Checked)
{
typesOfCipher = TypesOfCiphers.RotatingSquare;
}
else if (rbVigenerCipher.Checked)
{
typesOfCipher = TypesOfCiphers.Vigenere;
}
tbKey.Text = KeyValidation.ModifyKey(tbKey.Text, typesOfCipher).ToString();
rtbSrcText.Text = TextValidation.ModifyText(rtbSrcText.Text, typesOfCipher);
if (cbUseDataInRcb.Checked)
{
rtbResText.Text = MainController.Decrypt(rtbSrcText.Text, tbKey.Text,
typesOfCipher);
}
else
{
try
{
MainController.Decrypt(tbPathToSrcFile.Text, tbPathToResFile.Text,
tbKey.Text, typesOfCipher);
}
catch (ArgumentException)
{
MessageBox.Show("Incorrect file path entered!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (IOException)
{
MessageBox.Show("Incorrect file path entered!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
/// <summary>
/// Encrypts data from a file using the selected algorithm and writes the result to another file.
/// </summary>
/// <param name="pathToSrcFile">The path to the file with the text to be encrypted.</param>
/// <param name="pathToDestFile">The path to the file where you want to save the encryption result.</param>
/// <param name="key">The key for the encryption algorithm.</param>
/// <param name="typeOfChiper">The name of the encryption algorithm.</param>
public static void Encrypt(string pathToSrcFile, string pathToDestFile,
string key, TypesOfCiphers typeOfChiper)
{
string plaintext;
try
{
plaintext = File.ReadAllText(pathToSrcFile);
}
catch (ArgumentException)
{
throw new ArgumentException();
}
catch (IOException)
{
throw new IOException();
}
plaintext = TextValidation.ModifyText(plaintext, typeOfChiper);
string ciphertext = PerformAction(plaintext, key, typeOfChiper, Model.Ciphers.Action.Encrypt);
File.WriteAllText(pathToDestFile, ciphertext);
}