private void buttonEnkripsi_Click(object sender, EventArgs e)
{
ClearEnkrip();
if (textBoxEnkripsiPlainText.Text.Length == 0)
{
MessageBox.Show("Plaintext kosong");
return;
}
blokSize = (int)numericUpDownBlockSize.Value;
string text = textBoxEnkripsiPlainText.Text;
string now;
StringBuilder plainBiner = new StringBuilder();
foreach (char c in text)
{
plainBiner.Append(((int)c).ToBin(8));
}
dataGridViewProsesEnkripsi.Rows.Add("Plaintext : " + text);
dataGridViewProsesEnkripsi.Rows.Add("Ukuran Blok = " + blokSize);
dataGridViewProsesEnkripsi.Rows.Add();
dataGridViewProsesEnkripsi.Rows.Add("Plaintext Biner : " + plainBiner.ToString());
dataGridViewProsesEnkripsi.Rows.Add("C = M ^ E mod N");
int i = 1;
while (plainBiner.Length > 0)
{
dataGridViewProsesEnkripsi.Rows.Add();
if (plainBiner.Length < blokSize)
{
now = plainBiner.ToString().PadRight(blokSize, '0');
dataGridViewProsesEnkripsi.Rows.Add("M" + i + " = " + plainBiner.ToString());
dataGridViewProsesEnkripsi.Rows.Add("Tambah " + (blokSize - plainBiner.Length) + " bit 0 di belakang supaya sesuai ukuran blok");
}
else
{
now = plainBiner.ToString(0, blokSize);
}
plainBiner.Remove(0, Math.Min(blokSize, plainBiner.Length));
ulong t = now.BinToUlong();
dataGridViewProsesEnkripsi.Rows.Add("M" + i + " = " + now + " = " + t);
ulong c = 0;
if (checkBoxShowEnkripsiDetail.Checked)
{
dataGridViewProsesEnkripsi.Rows.Add("C" + i + " = " + t + " ^ " + E + " mod " + N);
c = Kripto.FastExponent(t, E, N, dataGridViewProsesEnkripsi);
}
else
{
c = Kripto.QuickModulo(t, E, N);
}
cipher.Add(c);
dataGridViewProsesEnkripsi.Rows.Add("C" + i++ + " = " + t + " ^ " + E + " mod " + N + " = " + c);
}
buttonDekripsi.Enabled = true;
}
private void buttonHitungY_Click(object sender, EventArgs e)
{
ClearKey();
uint p, g, x;
if (uint.TryParse(textBoxP.Text, out p) && uint.TryParse(textBoxG.Text, out g) && uint.TryParse(textBoxX.Text, out x))
{
P = p;
G = g;
X = x;
if (!Kripto.IsMiller(P, (int)Math.Min(P, (ulong)100)))
{
MessageBox.Show("P bukan prima");
}
else if (G >= P || G < 1)
{
MessageBox.Show("G antara 1 sampai " + (P - 1));
}
else if (X >= P || X < 1)
{
MessageBox.Show("X antara 1 sampai " + (P - 1));
}
else if (!Kripto.IsGeneratorModulo(g, p))
{
MessageBox.Show("G bukan generator modulo P");
}
else
{
dataGridViewNotSortAbleKey.Rows.Add("P = " + P);
dataGridViewNotSortAbleKey.Rows.Add("G = " + G);
dataGridViewNotSortAbleKey.Rows.Add("X = " + X);
dataGridViewNotSortAbleKey.Rows.Add("Y = G^X % P");
dataGridViewNotSortAbleKey.Rows.Add("Y = " + G + "^" + X + " % " + P);
Y = Kripto.FastExponent(G, X, P, dataGridViewNotSortAbleKey);
dataGridViewNotSortAbleKey.Rows.Add("Y = " + G + "^" + X + " % " + P + " = " + Y);
textBoxY.Text = Y.ToString();
int t = 0;
ulong temp = P;
while (temp > 1)
{
t++;
temp >>= 1;
}
numericUpDownBlockSize.Maximum = t;
numericUpDownBlockSize.Value = t;
buttonEnkripsi.Enabled = true;
}
}
else
{
MessageBox.Show("Cek p, q dan x");
}
}
private void buttonDekripsi_Click(object sender, EventArgs e)
{
ClearDekrip();
StringBuilder plainBiner = new StringBuilder();
string now = "";
dataGridViewProsesDekripsi.Rows.Add("M = C ^ D mod N");
for (int i = 0; i < cipher.Count; i++)
{
ulong c = cipher[i];
ulong m = 0;
dataGridViewProsesDekripsi.Rows.Add();
dataGridViewProsesDekripsi.Rows.Add("C" + (i + 1) + " = " + c);
if (checkBoxShowDekripsiDetail.Checked)
{
dataGridViewProsesDekripsi.Rows.Add("M" + (i + 1) + " = " + c + " ^ " + D + " mod " + N);
m = Kripto.FastExponent(c, D, N, dataGridViewProsesDekripsi);
}
else
{
m = Kripto.QuickModulo(c, D, N);
}
now = m.ToBin(blokSize);
plainBiner.Append(now);
dataGridViewProsesDekripsi.Rows.Add("M" + (i + 1) + " = " + c + " ^ " + D + " mod " + N + " = " + m);
dataGridViewProsesDekripsi.Rows.Add("M" + (i + 1) + " = " + now);
}
dataGridViewProsesDekripsi.Rows.Add();
dataGridViewProsesDekripsi.Rows.Add("Plaintext Biner : " + plainBiner.ToString());
StringBuilder plainText = new StringBuilder();
while (plainBiner.Length > 0)
{
now = plainBiner.ToString(0, Math.Min(8, plainBiner.Length));
ulong t = now.BinToUlong();
if (t == 0)
{
dataGridViewProsesDekripsi.Rows.Add(plainBiner.ToString() + " = bit yang ditambahkan");
break;
}
else
{
dataGridViewProsesDekripsi.Rows.Add(now + " = " + t + " = " + (char)t);
plainText.Append((char)t);
}
plainBiner.Remove(0, Math.Min(8, plainBiner.Length));
}
dataGridViewProsesDekripsi.Rows.Add("Plaintext : " + plainText.ToString());
textBoxDekripsiPlainText.Text = plainText.ToString();
}
private void buttonDekripsi_Click(object sender, EventArgs e)
{
ClearDekrip();
StringBuilder plainBiner = new StringBuilder();
string now;
dataGridViewProsesDekripsi.Rows.Add("c = a^(p-1-x) % p");
dataGridViewProsesDekripsi.Rows.Add("m = c.b % p");
for (int i = 0; i < ca.Count; i++)
{
ulong a = ca[i];
ulong b = cb[i];
ulong c = 0, m = 0;
dataGridViewProsesDekripsi.Rows.Add();
dataGridViewProsesDekripsi.Rows.Add("c = " + a + "^(" + P + "-1-" + X + ") % " + P);
if (checkBoxShowDekripsiDetail.Checked)
{
c = Kripto.FastExponent(a, P - 1 - X, P, dataGridViewProsesDekripsi);
}
else
{
c = Kripto.QuickModulo(a, P - 1 - X, P);
}
m = Kripto.MultiplyModulo(c, b, P);
plainBiner.Append(m.ToBin(blokSize));
dataGridViewProsesDekripsi.Rows.Add("m = (" + c + " . " + b + ") % " + P + " = " + m);
}
dataGridViewProsesDekripsi.Rows.Add();
dataGridViewProsesDekripsi.Rows.Add("Plaintext Biner : " + plainBiner.ToString());
StringBuilder plainText = new StringBuilder();
while (plainBiner.Length > 0)
{
now = plainBiner.ToString(0, Math.Min(8, plainBiner.Length));
ulong t = now.BinToUlong();
if (t == 0)
{
dataGridViewProsesDekripsi.Rows.Add(plainBiner.ToString() + " = bit yang ditambahkan");
break;
}
else
{
dataGridViewProsesDekripsi.Rows.Add(now + " = " + t + " = " + (char)t);
plainText.Append((char)t);
}
plainBiner.Remove(0, Math.Min(8, plainBiner.Length));
}
dataGridViewProsesDekripsi.Rows.Add("Plaintext : " + plainText.ToString());
textBoxDekripsiPlainText.Text = plainText.ToString();
}
private void buttonEnkripsi_Click(object sender, EventArgs e)
{
ClearEnkrip();
if (ulong.TryParse(textBoxK.Text, out K))
{
if (K > P - 2 || K < 1)
{
MessageBox.Show("K antara 1 sampai " + (P - 2));
}
else if (textBoxEnkripsiPlainText.Text.Length == 0)
{
MessageBox.Show("Plaintext kosong");
}
else
{
blokSize = (int)numericUpDownBlockSize.Value;
string text = textBoxEnkripsiPlainText.Text;
string now;
StringBuilder plainBiner = new StringBuilder();
foreach (char c in text)
{
plainBiner.Append(((int)c).ToBin(8));
}
dataGridViewProsesEnkripsi.Rows.Add("Plaintext : " + text);
dataGridViewNotSortAbleKey.Rows.Add("K = " + K);
dataGridViewProsesEnkripsi.Rows.Add("Ukuran Blok = " + blokSize);
dataGridViewProsesEnkripsi.Rows.Add();
dataGridViewProsesEnkripsi.Rows.Add("Plaintext Biner : " + plainBiner.ToString());
dataGridViewProsesEnkripsi.Rows.Add("a = g^k % p");
dataGridViewProsesEnkripsi.Rows.Add("b = m.y^k % p");
int i = 1;
while (plainBiner.Length > 0)
{
dataGridViewProsesEnkripsi.Rows.Add();
dataGridViewProsesEnkripsi.Rows.Add();
if (plainBiner.Length < blokSize)
{
now = plainBiner.ToString().PadRight(blokSize, '0');
dataGridViewProsesEnkripsi.Rows.Add("M" + i + " = " + plainBiner.ToString());
dataGridViewProsesEnkripsi.Rows.Add("Tambah " + (blokSize - plainBiner.Length) + " bit 0 di belakang supaya sesuai ukuran blok");
}
else
{
now = plainBiner.ToString(0, blokSize);
}
plainBiner.Remove(0, Math.Min(blokSize, plainBiner.Length));
ulong t = now.BinToUlong();
dataGridViewProsesEnkripsi.Rows.Add("M" + i + " = " + now + " = " + t);
ulong a = 0, b = 0;
if (checkBoxShowEnkripsiDetail.Checked)
{
dataGridViewProsesEnkripsi.Rows.Add("a = " + G + "^" + K + " % " + P);
a = Kripto.FastExponent(G, K, P, dataGridViewProsesEnkripsi);
}
else
{
a = Kripto.QuickModulo(G, K, P);
}
dataGridViewProsesEnkripsi.Rows.Add("a = " + G + "^" + K + " % " + P + " = " + a);
dataGridViewProsesEnkripsi.Rows.Add();
if (checkBoxShowEnkripsiDetail.Checked)
{
dataGridViewProsesEnkripsi.Rows.Add("b = " + t + "." + Y + "^" + K + " % " + P);
dataGridViewProsesEnkripsi.Rows.Add(Y + "^" + K + " % " + P);
b = Kripto.FastExponent(Y, K, P, dataGridViewProsesEnkripsi);
dataGridViewProsesEnkripsi.Rows.Add(Y + "^" + K + " % " + P + " = " + b);
dataGridViewProsesEnkripsi.Rows.Add("b = (" + t + "." + b + ") % " + P);
}
else
{
b = Kripto.QuickModulo(Y, K, P);
}
b = Kripto.MultiplyModulo(b, (ulong)t, P);
dataGridViewProsesEnkripsi.Rows.Add("b = " + t + "." + Y + "^" + K + " % " + P + " = " + b);
ca.Add(a);
cb.Add(b);
}
buttonDekripsi.Enabled = true;
}
}
else
{
MessageBox.Show("Cek k");
}
}
