private void buttonEnkripsi_Click(object sender, EventArgs e)
{
ClearEnkrip();
string text = textBoxEnkripsiPlainText.Text;
int i = 1;
dataGridViewProsesEnkripsi.Rows.Add("Plaintext : " + text);
dataGridViewProsesEnkripsi.Rows.Add("M = MM");
dataGridViewProsesEnkripsi.Rows.Add("C = M ^ 2 mod N");
foreach (char c in text)
{
dataGridViewProsesEnkripsi.Rows.Add();
int now = (int)c;
string binary = now.ToBin(8);
int duaKali = (now << 8) + now;
ulong res = Kripto.MultiplyModulo((ulong)duaKali, (ulong)duaKali, N);
cipher.Add(res);
dataGridViewProsesEnkripsi.Rows.Add(c + " = " + now + " = " + binary);
now = dataGridViewProsesEnkripsi.RowCount;
dataGridViewProsesEnkripsi.Rows.Add("M" + i + " = " + binary + " " + binary + " = " + duaKali);
if ((ulong)duaKali > N)
{
dataGridViewProsesEnkripsi[0, now].Style.BackColor = Color.Red;
dataGridViewProsesEnkripsi.Rows.Add("Pesan lebih besar dari N(" + duaKali + ">" + N + "), silakan cari prima lain jika ingin mengenkripsi pesan ini");
return;
}
dataGridViewProsesEnkripsi.Rows.Add("C" + i + " = (" + duaKali + ")^2 mod " + N + " = " + res);
i++;
}
buttonDekripsi.Enabled = true;
}
private void buttonShowPrime_Click(object sender, EventArgs e)
{
if (numericUpDownDari.Value + 10000 < numericUpDownSampai.Value && MessageBox.Show("Range terlalu besar, lanjukan?", "Prima range", MessageBoxButtons.YesNo) == DialogResult.No)
{
return;
}
dataGridViewNotSortAblePrima.DataSource = Kripto.GetPrime((int)numericUpDownDari.Value, (int)numericUpDownSampai.Value);
}
private void buttonCalculate_Click(object sender, EventArgs e)
{
int num = Convert.ToInt32(numericUpDownNumber.Value);
int pow = Convert.ToInt32(numericUpDownPower.Value);
int div = Convert.ToInt32(numericUpDownDivisor.Value);
textBoxResult.Text = QuickModulo(num, pow, div).ToString();
textBox1.Text = Kripto.QuickModulo(num, pow, div).ToString();
}
private void buttonHitungD_Click(object sender, EventArgs e)
{
ClearKey();
if (ulong.TryParse(textBoxE.Text, out E))
{
ulong max = Math.Max(P, Q) + 1;
if (E > TN[3] - 1 || E < max)
{
MessageBox.Show("E antara " + max + " sampai " + (TN[3] - 1));
}
else if (relatifPrimaD(E))
{
dataGridViewNotSortAbleEEA.Columns.Add("P1", "P1");
dataGridViewNotSortAbleEEA.Rows.Add("P = " + P);
dataGridViewNotSortAbleEEA.Rows.Add("Q = " + Q);
dataGridViewNotSortAbleEEA.Rows.Add("N = " + N);
dataGridViewNotSortAbleEEA.Rows.Add("\u03D5(n)(p+1)(q+1) = " + TN[0]);
dataGridViewNotSortAbleEEA.Rows.Add("\u03D5(n)(p+1)(q-1) = " + TN[1]);
dataGridViewNotSortAbleEEA.Rows.Add("\u03D5(n)(p-1)(q+1) = " + TN[2]);
dataGridViewNotSortAbleEEA.Rows.Add("\u03D5(n)(p-1)(q-1) = " + TN[3]);
dataGridViewNotSortAbleEEA.Rows.Add("E = " + E);
for (int i = 0; i < TN.Length; i++)
{
D[i] = Kripto.InversModulo(E, TN[i], dataGridViewNotSortAbleEEA);
}
dataGridViewNotSortAbleEEA.Rows.Add("D(p+1)(q+1) = " + D[0]);
dataGridViewNotSortAbleEEA.Rows.Add("D(p+1)(q-1) = " + D[1]);
dataGridViewNotSortAbleEEA.Rows.Add("D(p-1)(q+1) = " + D[2]);
dataGridViewNotSortAbleEEA.Rows.Add("D(p-1)(q-1) = " + D[3]);
textBoxDPPlusQPlus.Text = D[0].ToString();
textBoxDPPlusQMin.Text = D[1].ToString();
textBoxDPMinQPlus.Text = D[2].ToString();
textBoxDPMinQMin.Text = D[3].ToString();
int t = 0;
ulong x = N;
while (x > 1)
{
t++;
x >>= 1;
}
numericUpDownBlockSize.Maximum = t;
numericUpDownBlockSize.Value = t;
buttonEnkripsi.Enabled = true;
}
else
{
MessageBox.Show(E + " tidak relatif prima");
}
}
else
{
MessageBox.Show("Cek E");
}
}
private bool relatifPrimaD(ulong v)
{
bool result = true;
foreach (ulong t in TN)
{
result = result & Kripto.IsRelatifPrima(v, t);
}
return(result);
}
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 buttonRandomD_Click(object sender, EventArgs e)
{
ulong max = Math.Max(P, Q) + 1;
ulong t;
do
{
t = (ulong)(random.NextDouble() * (N - max)) + max;
} while (!Kripto.IsRelatifPrima(t, TN));
textBoxD.Text = t.ToString();
}
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 buttonTesPrima_Click(object sender, EventArgs e)
{
bool isPrima = Kripto.TestPrima(Convert.ToInt64(textBoxNum.Text), 1662803);
textBoxHasilRabinMiller.Text = "Dengan rabin miller, " + textBoxNum.Text;
if (isPrima)
{
textBoxHasilRabinMiller.Text += " adalah bilangan prima";
}
else
{
textBoxHasilRabinMiller.Text += " adalah bukan bilangan prima";
}
}
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 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 buttonHitungCRT_Click(object sender, EventArgs e)
{
if (dataGridViewCRT.RowCount > 0)
{
long a = Convert.ToInt32(dataGridViewCRT["number", 0].Value);
long b = Convert.ToInt32(dataGridViewCRT["divisor", 0].Value);
long lcm = b;
for (int i = 1; i < dataGridViewCRT.RowCount; i++)
{
DataGridViewRow row = dataGridViewCRT.Rows[i];
long num = Convert.ToInt64(row.Cells["number"].Value);
long div = Convert.ToInt64(row.Cells["divisor"].Value);
lcm = Kripto.LCM(lcm, div);
long x = num - a;
long inv = Kripto.InversModulo(b, div);
x *= inv;
x %= div;
a += b * x;
b *= div;
}
if (a < 0)
{
a += lcm;
}
textBox1.Text = "Hasil = " + a;
/*
* int n = dataGridViewCRT.RowCount;
* long[] arrNum = new long[n];
* long[] arrDiv = new long[n];
* for (int i = 0; i < n; i++)
* {
* arrNum[i] = Convert.ToInt32(dataGridViewCRT["number", i].Value);
* arrDiv[i] = Convert.ToInt32(dataGridViewCRT["divisor", i].Value);
* }
* textBox1.Text += " " + Kripto.ChineseRemainderTheorem(arrNum, arrDiv);
* //*/
}
else
{
textBox1.Clear();
}
}
private void buttonHitungN_Click(object sender, EventArgs e)
{
textBoxE.Clear();
textBoxDPMinQMin.Clear();
textBoxN.Clear();
textBoxTotientNPPlusQPlus.Clear();
buttonRandomE.Enabled = false;
buttonHitungD.Enabled = false;
uint p, q;
if (uint.TryParse(textBoxP.Text, out p) && uint.TryParse(textBoxQ.Text, out q))
{
P = p;
Q = q;
if (!Kripto.IsMiller(P, (int)Math.Min(P, (ulong)100)))
{
MessageBox.Show("P bukan prima");
}
else if (!Kripto.IsMiller(Q, (int)Math.Min(Q, (ulong)100)))
{
MessageBox.Show("Q bukan prima");
}
else
{
N = P * Q;
TN[0] = (P + 1) * (Q + 1);
TN[1] = (P + 1) * (Q - 1);
TN[2] = (P - 1) * (Q + 1);
TN[3] = (P - 1) * (Q - 1);
textBoxN.Text = N.ToString();
textBoxTotientNPPlusQPlus.Text = TN[0].ToString();
textBoxTotientNPPlusQMin.Text = TN[1].ToString();
textBoxTotientNPMinQPlus.Text = TN[2].ToString();
textBoxTotientNPMinQMin.Text = TN[3].ToString();
buttonRandomE.Enabled = true;
buttonHitungD.Enabled = true;
}
}
else
{
MessageBox.Show("Cek p dan q");
}
}
private void buttonHitungE_Click(object sender, EventArgs e)
{
ClearKey();
if (ulong.TryParse(textBoxD.Text, out D))
{
ulong max = Math.Max(P, Q) + 1;
if (D >= TN || D < max)
{
MessageBox.Show("D antara " + max + " sampai " + (TN - 1));
}
else if (Kripto.IsRelatifPrima(D, TN))
{
dataGridViewNotSortAbleEEA.Columns.Add("P1", "P1");
dataGridViewNotSortAbleEEA.Rows.Add("P = " + P);
dataGridViewNotSortAbleEEA.Rows.Add("Q = " + Q);
dataGridViewNotSortAbleEEA.Rows.Add("N = " + N);
dataGridViewNotSortAbleEEA.Rows.Add("\u03D5(n) = " + TN);
dataGridViewNotSortAbleEEA.Rows.Add("D = " + D);
E = Kripto.InversModulo(D, TN, dataGridViewNotSortAbleEEA);
dataGridViewNotSortAbleEEA.Rows.Add("E = " + E);
textBoxE.Text = E.ToString();
int t = 0;
ulong temp = N;
while (temp > 1)
{
t++;
temp >>= 1;
}
numericUpDownBlockSize.Maximum = t;
numericUpDownBlockSize.Value = t;
buttonEnkripsi.Enabled = true;
}
else
{
MessageBox.Show(D + " dan " + TN + " tidak relatif prima");
}
}
else
{
MessageBox.Show("Cek D");
}
}
private void buttonHitungN_Click(object sender, EventArgs e)
{
ClearKey();
uint p, q;
if (uint.TryParse(textBoxP.Text, out p) && uint.TryParse(textBoxQ.Text, out q))
{
P = p;
Q = q;
if (!Kripto.IsMiller(P, (int)Math.Min(P, (ulong)100)))
{
MessageBox.Show("P bukan prima");
}
else if ((P + 1) % 4 != 0)
{
MessageBox.Show("P + 1 tidak habis dibagi 4");
}
else if (!Kripto.IsMiller(Q, (int)Math.Min(Q, (ulong)100)))
{
MessageBox.Show("Q bukan prima");
}
else if ((Q + 1) % 4 != 0)
{
MessageBox.Show("Q + 1 tidak habis dibagi 4");
}
else
{
dataGridViewNotSortAbleEEA.Rows.Add("P = " + P);
dataGridViewNotSortAbleEEA.Rows.Add("Q = " + Q);
N = P * Q;
dataGridViewNotSortAbleEEA.Rows.Add("N = " + N);
textBoxN.Text = N.ToString();
buttonEnkripsi.Enabled = true;
}
}
else
{
MessageBox.Show("Cek p dan q");
}
}
private void InvMixColumns(ref int[,] arr)
{
int[] temp = new int[4];
int[,] mc = { { 14, 11, 13, 9 }, { 9, 14, 11, 13 }, { 13, 9, 14, 11 }, { 11, 13, 9, 14 } };
for (int col = 0; col < 4; col++)
{
int res;
for (int i = 0; i < 4; i++)
{
res = 0;
for (int j = 0; j < 4; j++)
{
res ^= Kripto.GF_8(mc[i, j], arr[j, col]);
}
temp[i] = res;
}
for (int i = 0; i < 4; i++)
{
arr[i, col] = temp[i];
}
}
}
private void MixColumns(ref int[,] arr)
{
int[] temp = new int[4];
int[,] mc = { { 2, 3, 1, 1 }, { 1, 2, 3, 1 }, { 1, 1, 2, 3 }, { 3, 1, 1, 2 } };
for (int col = 0; col < 4; col++)
{
int res;
for (int i = 0; i < 4; i++)
{
res = 0;
for (int j = 0; j < 4; j++)
{
res ^= Kripto.GF_8(mc[i, j], arr[j, col]);
}
temp[i] = res;
}
for (int i = 0; i < 4; i++)
{
arr[i, col] = temp[i];
}
}
}
private void buttonTambah_Click(object sender, EventArgs e)
{
if (Kripto.IsNumber(textBoxNumber.Text) && Kripto.IsNumber(textBoxDivisor.Text))
{
int num = Convert.ToInt32(textBoxNumber.Text);
int div = Convert.ToInt32(textBoxDivisor.Text);
if (div == 0)
{
MessageBox.Show("Divisor shouldn't equals 0");
}
else if (num == 0)
{
MessageBox.Show("Number shouldn't equals 0");
}
else if (num == div)
{
MessageBox.Show("Number shouldn't equals divisor");
}
else
{
if (num > div)
{
num %= div;
}
if (num < 0)
{
num += (num / div - 1) * -div;
}
dataGridViewCRT.Rows.Add(new object[] { "X =", num, "mod", div });
textBoxNumber.Clear();
textBoxDivisor.Clear();
}
}
else
{
MessageBox.Show("Input Number");
}
}
private ulong Lucas(ulong value, ulong key, ulong N, DataGridViewNotSortAble grid, bool printProcess)
{
if (key == 0)
{
return(2);
}
if (key == 1)
{
return(value);
}
ulong a0 = 2;
ulong a1 = value;
long a2;
if (printProcess)
{
grid.Rows.Add("V[0](" + value + ",1) = 2");
grid.Rows.Add("V[1](" + value + ",1) = " + value);
}
for (ulong i = 2; i <= key; i++)
{
a2 = (long)(Kripto.MultiplyModulo(value, a1, N) - a0);
if (a2 < 0)
{
a2 += (long)N;
}
if (printProcess)
{
grid.Rows.Add();
grid.Rows.Add("V[" + i + "](" + value + ",1) = (P * V[" + (i - 1) + "](" + value + ",1) - V[" + (i - 2) + "](" + value + ",1)) mod " + N);
grid.Rows.Add("V[" + i + "](" + value + ",1) = (" + value + " * " + a1 + " - " + a0 + ") mod " + N);
grid.Rows.Add("V[" + i + "](" + value + ",1) = " + a2);
}
a0 = a1;
a1 = (ulong)a2;
}
return(a1);
}
private void buttonDekripsi_Click(object sender, EventArgs e)
{
ClearDekrip();
dataGridViewProsesDekripsi.Rows.Add("a = P^-1 mod Q");
dataGridViewProsesDekripsi.Rows.Add("b = Q^-1 mod P");
dataGridViewProsesDekripsi.Rows.Add("r = c ^ ((P+1)/4) mod P");
dataGridViewProsesDekripsi.Rows.Add("s = c ^ ((Q+1)/4) mod Q");
dataGridViewProsesDekripsi.Rows.Add("x = (a * P * s + b * Q * r) mod N");
dataGridViewProsesDekripsi.Rows.Add("y = (a * P * s - b * Q * r) mod N");
dataGridViewProsesDekripsi.Rows.Add("M1 = x");
dataGridViewProsesDekripsi.Rows.Add("M2 = N - x");
dataGridViewProsesDekripsi.Rows.Add("M1 = y");
dataGridViewProsesDekripsi.Rows.Add("M2 = N - y");
dataGridViewProsesDekripsi.Rows.Add();
ulong a = Kripto.InversModulo(P, Q, dataGridViewProsesDekripsi);
ulong b = Kripto.InversModulo(Q, P, dataGridViewProsesDekripsi);
dataGridViewProsesDekripsi.Rows.Add("a = " + P + "^-1 mod " + Q + " = " + a);
dataGridViewProsesDekripsi.Rows.Add("b = " + Q + "^-1 mod " + P + " = " + b);
int i = 1;
ulong[] arr = new ulong[4];
List <ulong> m = new List <ulong>();
StringBuilder plaintext = new StringBuilder();
ulong p4 = (P + 1) / 4;
ulong q4 = (Q + 1) / 4;
foreach (ulong c in cipher)
{
ulong r = Kripto.QuickModulo(c, p4, P);
ulong s = Kripto.QuickModulo(c, q4, Q);
ulong left = Kripto.MultiplyModulo(Kripto.MultiplyModulo(a, P, N), s, N);
ulong right = Kripto.MultiplyModulo(Kripto.MultiplyModulo(b, Q, N), r, N);
ulong x = (left + right) % N;
ulong y;
if (right > left)
{
y = N - right + left;
}
else
{
y = (Kripto.MultiplyModulo(Kripto.MultiplyModulo(a, P, N), s, N) - Kripto.MultiplyModulo(Kripto.MultiplyModulo(b, Q, N), r, N)) % N;
}
arr[0] = x;
arr[1] = N - x;
arr[2] = y;
arr[3] = N - y;
dataGridViewProsesDekripsi.Rows.Add();
dataGridViewProsesDekripsi.Rows.Add("r" + i + " = " + c + " ^ ((" + P + "+1)/4) mod " + P + " = " + r);
dataGridViewProsesDekripsi.Rows.Add("s" + i + " = " + c + " ^ ((" + Q + "+1)/4) mod " + Q + " = " + s);
dataGridViewProsesDekripsi.Rows.Add("x" + i + " = (" + a + " * " + P + " * " + s + " + " + b + " * " + Q + " * " + r + ") mod " + N + " = " + x);
dataGridViewProsesDekripsi.Rows.Add("y" + i + " = (" + a + " * " + P + " * " + s + " - " + b + " * " + Q + " * " + r + ") mod " + N + " = " + y);
int idx = dataGridViewProsesDekripsi.RowCount;
for (int j = 0; j < 4; j++)
{
ulong t = arr[j];
dataGridViewProsesDekripsi.Rows.Add("M" + (j + 1) + " = " + arr[j] + " = " + arr[j].ToBin(16));
if (((t >> 8) & ((1 << 8) - 1)) == (t & ((1 << 8) - 1)))
{
m.Add(t);
dataGridViewProsesDekripsi[0, idx + j].Style.BackColor = Color.LimeGreen;
}
}
i++;
}
dataGridViewProsesDekripsi.Rows.Add();
i = 1;
foreach (ulong t in m)
{
dataGridViewProsesDekripsi.Rows.Add("M" + i + " = " + t + " = " + t.ToBin(16));
dataGridViewProsesDekripsi.Rows.Add("M" + i++ + " = " + (t >> 8).ToBin(8) + " = " + (t >> 8) + " = " + (char)(t >> 8));
plaintext.Append((char)(t >> 8));
}
textBoxDekripsiPlainText.Text = plaintext.ToString();
}
private void buttonCalculate_Click(object sender, EventArgs e)
{
Regex hexa = new Regex(@"^[0-9A-F]+$");
if (hexa.IsMatch(textBoxNumber1.Text) && hexa.IsMatch(textBoxNumber2.Text) && hexa.IsMatch(textBoxDivisor.Text))
{
try
{
int num1 = textBoxNumber1.Text.HexToInt();
int num2 = textBoxNumber2.Text.HexToInt();
int div = textBoxDivisor.Text.HexToInt();
string bin1 = num1.ToBin();
string bin2 = num2.ToBin();
string binDiv = div.ToBin();
int len = 5 * (bin1.Length + bin2.Length - 1) / 4;
string now, binary;
string line = DuplicateChar('-', len);
dataGridViewCalcBiner.Rows.Clear();
dataGridViewCalcHex.Rows.Clear();
InsertDataGridPolinomial(ToPolinomial(bin1));
binary = InsertSpace(bin1);
now = string.Concat(DuplicateChar(' ', len - binary.Length), binary);
InsertDataGrid(now);
InsertDataGridPolinomial(ToPolinomial(bin2));
binary = InsertSpace(bin2);
now = string.Concat(DuplicateChar(' ', len - binary.Length), binary);
InsertDataGrid(now);
InsertDataGridPolinomial(line);
InsertDataGrid(line);
string binMul = Multiply(bin1, bin2, bin2.Length - 1);
line += "XOR";
InsertDataGridPolinomial(line);
InsertDataGrid(line);
InsertDataGridPolinomial(ToPolinomial(binMul));
binary = InsertSpace(binMul);
now = string.Concat(DuplicateChar(' ', len - binary.Length), binary);
InsertDataGrid(now);
int ct = 64;
if (binMul.Length > 8)
{
binDiv = string.Concat(binDiv, DuplicateChar('0', binMul.Length - binDiv.Length));
}
while (binMul.Length > 8 && ct-- > 0)
{
InsertDataGridPolinomial(ToPolinomial(binDiv));
binary = InsertSpace(binDiv);
now = string.Concat(DuplicateChar(' ', len - binary.Length), binary);
InsertDataGrid(now);
InsertDataGridPolinomial(line);
InsertDataGrid(line);
binMul = XOR(binMul, binDiv);
InsertDataGridPolinomial(ToPolinomial(binMul));
binary = InsertSpace(binMul);
now = string.Concat(DuplicateChar(' ', len - binary.Length), binary);
InsertDataGrid(now);
while (binMul[0] == '0')
{
binMul = binMul.Remove(0, 1);
binDiv = binDiv.Remove(binDiv.Length - 1, 1);
}
}
int gf = binMul.BinToInt();
InsertDataGridPolinomial(ToPolinomial(binMul));
InsertDataGrid(now + " = " + gf.ToHex() + "(16) = " + Kripto.GF_8_Hexa(num1, num2));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
else
{
MessageBox.Show("Hexa tidak valid");
}
}
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");
}
}
