// Encrypt the file.
private void encryptButton_Click(object sender, EventArgs e)
{
try
{
// Encrypt the file.
string password = encryptPasswordTextBox.Text;
string plainfile = plainfileTextBox.Text;
string cipherfile = cipherfileTextBox.Text;
CryptoExtensions.EncryptFile(password, plainfile, cipherfile);
// Show the results.
plaintextRtb.LoadFile(plainfile);
// Make sure we don't try to show too many bytes.
byte[] cipherbytes = File.ReadAllBytes(cipherfile);
const int maxBytes = 1000;
if (cipherbytes.Length > maxBytes)
{
byte[] bytes = new byte[maxBytes];
Array.Copy(cipherbytes, bytes, maxBytes);
cipherbytes = bytes;
}
ciphertextTextBox.Text = cipherbytes.BytesToHex();
}
catch (Exception ex)
{
string stars = new string('*', ex.Message.Length);
ciphertextTextBox.Text = $"{stars}\n{ex.Message}\n{stars}";
}
}
// Decrypt the file.
private void decryptButton_Click(object sender, EventArgs e)
{
try
{
// Decrypt the file.
string password = decryptPasswordTextBox.Text;
string cipherfile = cipherfileTextBox.Text;
string recoverfile = recoverfileTextBox.Text;
CryptoExtensions.DecryptFile(password, cipherfile, recoverfile);
// Show the results.
recovertextRtb.LoadFile(recoverfile);
}
catch (Exception ex)
{
string stars = new string('*', ex.Message.Length);
recovertextRtb.Text = $"{stars}\n{ex.Message}\n{stars}";
}
}
