private void bt_Decrypt_Click(object sender, RoutedEventArgs e)
{
string plaintext = "";
string cipheredtext = txt_Ciphered.Text;
cipheredtext = File.ReadAllText("info.txt");
long n = Convert.ToInt64(txt_Keyn.Text);
long de = Convert.ToInt64(txt_Keyd.Text);
int buf;
int error = 0;
Class.RSA rsa = new Class.RSA();
for (int i = 0; i < cipheredtext.Length; i++)
{
try
{
buf = rsa.encode(Char.ConvertToUtf32(cipheredtext[i].ToString(), 0), n, de);
if (buf > 55295 && buf < 57343)
{
plaintext += cipheredtext[i];
error++;
}
else
{
plaintext += Char.ConvertFromUtf32(buf);
}
}
catch
{
buf = rsa.encode(Char.ConvertToUtf32(cipheredtext[i], cipheredtext[i + 1]), n, de);
if (buf > 55295 && buf < 57343)
{
plaintext += cipheredtext[i] + cipheredtext[i + 1];
error++;
error++;
}
else
{
plaintext += Char.ConvertFromUtf32(buf);
}
i++;
}
}
if (error > cipheredtext.Length * 0.1)
{
MessageBox.Show("E:" + error.ToString() + "Proszę zmienić klucz");
}
txt_Plain.Text = plaintext;
File.WriteAllText("info.txt", cipheredtext);
}
private void bt_encrypt_Click(object sender, RoutedEventArgs e)
{
string plaintext = txt_Plain.Text;
string cipheredtext = "";
long n = Convert.ToInt64(txt_Keyn.Text);
long en = Convert.ToInt64(txt_Keye.Text);
int buf;
int error = 0;
Class.RSA rsa = new Class.RSA();
//string hexValue =
for (int i = 0; i < plaintext.Length; i++)
{
try
{
buf = rsa.encode(Char.ConvertToUtf32(plaintext[i].ToString(), 0), n, en);
if (buf > 55295 && buf < 57343)
{
cipheredtext += plaintext[i];
error++;
}
else
{
cipheredtext += Char.ConvertFromUtf32(buf);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
buf = rsa.encode(Char.ConvertToUtf32(plaintext[i], plaintext[i + 1]), n, en);
if (buf > 55295 && buf < 57343)
{
cipheredtext += plaintext[i] + plaintext[i + 1];
error++;
error++;
}
else
{
cipheredtext += Char.ConvertFromUtf32(buf);
}
}
}
if (error > plaintext.Length * 0.1)
{
MessageBox.Show("E:" + error.ToString() + "Proszę zmienić klucz");
}
txt_Ciphered.Text = cipheredtext;
this.ciphered = cipheredtext;
}