public string encrypt(int p, int q, string x)
{
int n = p * q;
int fi = (q - 1) * (p - 1);
int e = 2;
while (e < fi)
{
if (DBD(e, fi) == 1)
{
break;
}
else
{
e++;
}
}
string encrypted = "";
foreach (char c in x.ToCharArray())
{
encrypted += $"{Convert.ToString((Int32)BigInteger.ModPow(c,e,n))},";
}
encrypted = encrypted.Remove(encrypted.Length - 1);
EncryptedModel model = new EncryptedModel();
model.e = e;
model.n = n;
model.y = encrypted;
DataBase.SaveEncrypted(model);
return(encrypted);
}
public static void SaveEncrypted(EncryptedModel model)
{
using (IDbConnection cnn = new SQLiteConnection(LoadConnectionString()))
{
cnn.Execute("insert into Data (y, n, e) values (@y, @n, @e)", model);
}
}
private void rBtnEncrypt_Checked(object sender, RoutedEventArgs e)
{
updateButton();
tBxInputP.Text = "";
tBxInputQ.Text = "";
tBxInputText.Text = "";
selectedModel = null;
gridEncrypt.Visibility = Visibility.Visible;
gridDecrypt.Visibility = Visibility.Collapsed;
}
public string decrypt(EncryptedModel model)
{
int[] encrypted = Array.ConvertAll(model.y.Split(','), int.Parse);
string decrypted = "";
foreach (int i in encrypted)
{
int temp3 = phi(model.n);
int temp2 = IEA(model.e, temp3);
int temp = (Int32)BigInteger.ModPow(i, temp2, model.n);
decrypted += Convert.ToChar(temp);
}
return(decrypted);
}
private void setModel(EncryptedModel model)
{
selectedModel = model;
updateList();
updateButton();
}