LISTING PROGRAM
Kode Program Form home_application :
using System;using System.Collections.Generic; using System.ComponentModel; using System.Data;
using System.Drawing; using System.Linq; using System.Text;
using System.Windows.Forms;
namespace kriptostegano {
public partial class Form1 : Form {
public Form1() {
InitializeComponent(); }
private void aboutToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form2 fr2 = new Form2(); fr2.ShowDialog();
}
private void helpToolStripMenuItem_Click(object sender, EventArgs e) {
this.Dispose();
Form3 fr3 = new Form3(); fr3.ShowDialog();
}
private void startToolStripMenuItem_Click(object sender, EventArgs e) {
this.Dispose();
Form4 fr4 = new Form4(); fr4.ShowDialog();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e) {
DialogResult dialog = MessageBox.Show("Are you sure to exit this application?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes) {
Application.Exit(); }
Kode Program Form encryption1 :
using System;using System.Collections.Generic; using System.ComponentModel; using System.Data;
using System.Drawing; using System.Linq; using System.Text;
using System.Windows.Forms; using System.IO;
using System.Numerics;
using System.Drawing.Imaging; using System.Diagnostics;
namespace kriptostegano {
public partial class Form4 : Form {
BigInteger p, eA; int dA = 0;
Image gambar;
BigInteger[] Cipher; int[] SCipher;
public Form4() {
InitializeComponent();
}
private void homeToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form1 fr1 = new Form1(); fr1.ShowDialog();
}
private void aboutToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form2 fr2 = new Form2(); fr2.ShowDialog();
}
private void helpToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form3 fr3 = new Form3(); fr3.ShowDialog();
private void exitToolStripMenuItem_Click(object sender,EventArgs e) {
DialogResult dialog = MessageBox.Show("Are you sure to exit this application?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes) {
Application.Exit(); }
}
private void Form4_Load(object sender, EventArgs e) {
btnGeneratekeyA.Enabled = false; opntxt.Enabled = false;
btnEncrypt1.Enabled = false; opnCI1.Enabled = false; btnEmbed1.Enabled = false; SaveSI1.Enabled = false; }
private void btnGenerateP_Click_1(object sender, EventArgs e) {
ulang:
Random rndp = new Random(); p = rndp.Next(257, 1000);
if (Fermat(p)) {
prima.Text = Convert.ToString(p); groupBox2.Visible = true;
btnGeneratekeyA.Enabled = true; }
else {
goto ulang; }
}
private void resetp_Click_1(object sender, EventArgs e) {
DialogResult dialog = MessageBox.Show("Are you sure to reset all the process?", "Reset",
MessageBoxButtons.YesNo, MessageBoxIcon.Question); if (dialog == DialogResult.Yes)
{
prima.Text = ""; nilaieA.Text = ""; nilaidA.Text = ""; plain.Text = "";
cipher1enkrip1.Text = ""; sizeci1.Text = "";
textBox5.Text = ""; textBox6.Text = "";
pictureBox1.Image = null; pictureBox2.Image = null; label11.Text = "";
} }
public bool Fermat(BigInteger p) {
BigInteger a = 0;
for (int i = 0; i <= p.ToString().Length; i++) {
Random rnda = new Random(); a = rnda.Next(2, (int)p);
if (!(BigInteger.ModPow(a, p - 1, p).IsOne)) {
return false; }
}
return true; }
public BigInteger cariGCD(BigInteger m, BigInteger n) {
BigInteger r = m % n; if (r == 0)
return n;
return cariGCD(n, r); }
private void btnGeneratekeyA_Click(object sender,EventArgs e) {
ulangeA:
Random rndeA = new Random(); eA = rndeA.Next(2, (int)p - 1);
if (cariGCD(eA, p) == 1) {
nilaieA.Text = Convert.ToString(eA); groupBox2.Visible = true;
BigInteger hasil = 0; dA = 0;
while (hasil != 1) {
dA++;
hasil = ((dA * eA) % (p - 1)); if (dA > 100000)
{
goto ulangeA; }
}
nilaidA.Text = dA.ToString(); opntxt.Enabled = true;
btnEncrypt1.Enabled = true; }
else {
} }
private void opntxt_Click_1(object sender, EventArgs e) {
Stream mystream;
OpenFileDialog openDialogEnkrip1 = new OpenFileDialog(); saveDialogEnkrip1.Title = "Open File Text";
openDialogEnkrip1.Filter = "Text|*.txt";
if (openDialogEnkrip1.ShowDialog() == System.Windows.Forms.DialogResult.OK) {
if ((mystream = openDialogEnkrip1.OpenFile()) != null)
{
string strfilename = openDialogEnkrip1.FileName; string filetext = File.ReadAllText(strfilename); btnEncrypt1.Enabled = true;
plain.Text = filetext; }
} }
private void btnEncrypt1_Click(object sender, EventArgs e) {
string plaintext = plain.Text; cipher1enkrip1.Text = ""; string pA = "";
foreach (char c in plaintext) {
pA += System.Convert.ToInt32(c).ToString() + " "; }
string[] temp = pA.Split(' ');
Cipher = new BigInteger[temp.Length];
for (int i = 0; i < Cipher.Length - 1; i++) {
Cipher[i] = BigInteger.Pow(BigInteger.Parse(temp[i]), (int)eA) % (int)p;
cipher1enkrip1.Text += Cipher[i].ToString() + " "; }
SCipher = new int[(temp.Length * 2) - 2]; string mb = "";
string cip;
for (int i = 0, j = 0; i < Cipher.Length - 1; i++, j+=2) {
cip = Cipher[i].ToString(); if (cip.Length == 1)
SCipher[j] = Convert.ToInt32(cip.Substring(0, 2)); SCipher[j + 1] = Convert.ToInt32(cip.Substring(2,2)); mb += SCipher[j].ToString() + " " + SCipher[j +
1].ToString() + " "; }
MessageBox.Show("Encryption succeed", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
opnCI1.Enabled = true; }
private void opnCI1_Click(object sender, EventArgs e) {
OpenFileDialog openDialogEnkrip1 = new OpenFileDialog(); openDialogEnkrip1.Filter = "Image Files(*.bmp)|*.bmp"; DialogResult dr = openDialogEnkrip1.ShowDialog(); if (dr == DialogResult.OK)
{
gambar = Image.FromFile(openDialogEnkrip1.FileName); pictureBox1.Image = gambar;
textBox5.Text = gambar.Width.ToString(); textBox6.Text = gambar.Height.ToString(); string path =
Path.GetFullPath(openDialogEnkrip1.FileName);
FileInfo fileInfo = new FileInfo(path); double fileSizeKB = fileInfo.Length / 1024; double size = Math.Round(fileSizeKB, 2); sizeci1.Text = size.ToString();
btnEmbed1.Enabled = true; }
}
private void btnEmbed1_Click(object sender, EventArgs e) {
int limit = plain.TextLength; Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox1.Image); int x = image.Width;
int y = image.Height;
if ((x * 3) - 2 < limit) {
MessageBox.Show("Message is over limit of image pixel\r\nPlease choose another image,", "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else {
Bitmap output = new Bitmap(image.Width, 1); Bitmap output2 = new Bitmap(image.Width, 1); for (int i = 0; i < 1; i++)
{
for (int j = 0; j < x; j++) {
output.SetPixel(j, i, Color.FromArgb(255, 0, 0, 0));
} }
int x1 = 0, x2 = 0, index = 0, count = 0; for (int i = 0; i < y; i++)
{
for (int j = 0; j < x * 2; j++) {
if (index == SCipher.Length) goto habis;
if (count % 2 == 0) {
if (index + 2 == SCipher.Length) {
output.SetPixel(x1, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x1++; count++; }
else if (index + 1 == SCipher.Length) {
output.SetPixel(x1, i, Color.FromArgb
(255, (int)SCipher[index], 0, 0));
index++; x1++; count++; }
else {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], (int)SCipher[index + 2])); index += 3;
x1++; count++; }
} else {
if (index + 2 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x2++; count++; }
else if (index + 1 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index], 0, 0)); index++;
x2++; count++; }
{
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], (int)SCipher[index + 2]));
index += 3; x2++;
count++; }
} } } habis:
for (int i = 0; i < 1; i++) {
for (int j = 0; j < x; j++) {
int r = output.GetPixel(j, i).R; int g = output.GetPixel(j, i).G; int b = output.GetPixel(j, i).B;
int r2 = output2.GetPixel(j, i).R; int g2 = output2.GetPixel(j, i).G; int b2 = output2.GetPixel(j, i).B; }
}
Bitmap outputImage = new Bitmap(image.Width, image.Height + 2,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(outputImage))
{
graphics.DrawImage(output, new Rectangle(new Point(), output.Size),
new Rectangle(new Point(), output.Size), GraphicsUnit.Pixel);
graphics.DrawImage(image, new Rectangle(new Point(0, output.Height + 1), image.Size),
new Rectangle(new Point(), image.Size), GraphicsUnit.Pixel);
graphics.DrawImage(output2, new Rectangle(new Point(0, image.Height + 1), output2.Size),
new Rectangle(new Point(), output2.Size), GraphicsUnit.Pixel);
}
pictureBox2.Image = outputImage; SaveSI1.Enabled = true;
sw.Stop();
label11.Text = "Waktu Embed :\r\n " + sw.Elapsed; MessageBox.Show("Embedding succeed\rplease save stego image", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information); }
}
private void SaveSI1_Click(object sender, EventArgs e) {
saveDialogEnkrip1.Filter = "Image Files(*.bmp)|*.bmp";
if (DialogResult.OK == saveDialogEnkrip1.ShowDialog()) {
pictureBox2.Image.Save(saveDialogEnkrip1.FileName, ImageFormat.Bmp);
MessageBox.Show("Stego Image Saved", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
} }
private void next1_Click(object sender, EventArgs e) {
this.Hide();
Form5 fr5 = new Form5(); fr5.ShowDialog();
} } }
Kode Program Form encryption2 :
using System;using System.Collections.Generic; using System.ComponentModel; using System.Data;
using System.Drawing; using System.Linq; using System.Text;
using System.Windows.Forms; using System.IO;
using System.Numerics;
using System.Drawing.Imaging; using System.Diagnostics;
namespace kriptostegano {
public partial class Form5 : Form {
BigInteger eB; int dB = 0;
Bitmap newBitmap; Image gambar;
BigInteger[] Cipher; int[] SCipher;
public Form5() {
InitializeComponent(); }
private void homeToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
Form1 fr1 = new Form1(); fr1.ShowDialog();
private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
Form2 fr2 = new Form2(); fr2.ShowDialog();
}
private void helpToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
Form3 fr3 = new Form3(); fr3.ShowDialog();
}
private void startToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
Form4 fr4 = new Form4(); fr4.ShowDialog();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult dialog = MessageBox.Show("Are you sure to exit this application?", "Exit", MessageBoxButtons.YesNo,
MessageBoxIcon.Question);
if (dialog == DialogResult.Yes) {
Application.Exit(); }
}
private void Form5_Load(object sender, EventArgs e) {
GroupBox grup = Application.OpenForms["Form4"]. Controls["groupBox1"] as GroupBox;
TextBox nilaiP = grup.Controls["prima"] as TextBox; prima1.Text = nilaiP.Text;
btnExtract1.Enabled = false; btnGeneratekeyB.Enabled = false; btnEncrypt2.Enabled = false; opnCI2.Enabled = false; btnEmbed2.Enabled = false; SaveSI2.Enabled = false; }
private void opnSI1_Click_1(object sender, EventArgs e) {
OpenFileDialog openDialogEnkrip2 = new OpenFileDialog(); openDialogEnkrip2.Title = "Open Stego Image";
openDialogEnkrip2.Filter = "Bitmaps|*.Bmp";
if (dr == DialogResult.OK) {
gambar = Image.FromFile(openDialogEnkrip2.FileName); newBitmap = new Bitmap(openDialogEnkrip2.FileName); pictureBox3.Image = gambar;
btnExtract1.Enabled = true; }
}
private void btnExtract1_Click(object sender, EventArgs e) {
Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox3.Image); int x = image.Width;
int y = image.Height; string px = "";
int r, g, b;
string strR, strG, strB; for (int i = 0; i < x; i++) {
for (int j = 0; j < y; j++) {
if (j == 0 || j == y - 1) {
r = image.GetPixel(i, j).R; if (r.ToString().Length == 1) strR = "0" + r;
else
strR = r.ToString(); g = image.GetPixel(i, j).G; if (g.ToString().Length == 1) strG = "0" + g;
else
strG = g.ToString(); b = image.GetPixel(i, j).B; if (b.ToString().Length == 1) strB = "0" + b;
else
strB = b.ToString();
px += strR + " " + strG + " " + strB + " "; }
} }
int count = 1;
for (int i = 0; i < px.Length; i++) {
if (px[i] == ' ') {
if (count % 2 != 0)
px = px.Remove(i, 1); count++;
} }
int index = px.IndexOf(" 0000 0000"); if (index < 0)
DialogResult dialognohidden = MessageBox.Show("no hidden message\rplease input another image", "Info", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
px = px.Substring(0, index); string[] temp = px.Split(' '); px = "";
for (int i = 0; i < temp.Length; i++) {
px += Convert.ToInt32(temp[i]) + " "; }
cipher1enkrip2.Text = px;
sw.Stop();
label13.Text = "Waktu Extract :\r\n " + sw.Elapsed; MessageBox.Show("Extracting succeed\r please input p
and generate key", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
btnGeneratekeyB.Enabled = true;
} }
public BigInteger cariGCD(BigInteger m, BigInteger n) {
BigInteger r = m % n; if (r == 0)
return n;
return cariGCD(n, r); }
private void btnGeneratekeyB_Click(object sender,EventArgs e) {
ulangeB:
Random rndeB = new Random();
eB = rndeB.Next(2, (Convert.ToInt32(prima1.Text) - 1));
if (cariGCD(eB, Convert.ToInt32(prima1.Text)) == 1) {
nilaieB.Text = Convert.ToString(eB); BigInteger hasil = 0;
dB = 0;
while (hasil != 1) {
dB++;
hasil = ((dB * eB) % (Convert.ToInt32(prima1.Text) - 1)); if (dB > 100000) {
goto ulangeB; }
}
nilaidB.Text = dB.ToString(); btnEncrypt2.Enabled = true;
else {
goto ulangeB; }
}
private void btnEncrypt2_Click(object sender, EventArgs e) {
string plaintext = cipher1enkrip2.Text; cipher2enkrip2.Text = "";
string[] temp = plaintext.Split(' '); Cipher = new BigInteger[temp.Length];
for (int i = 0; i < Cipher.Length - 1; i++) {
Cipher[i] = BigInteger.Pow(BigInteger.Parse(temp[i]), (int)eB) % (int)Convert.ToInt32(prima1.Text);
cipher2enkrip2.Text += Cipher[i].ToString() + " "; }
SCipher = new int[(temp.Length * 2) - 2]; string mb = "";
string cip;
for (int i = 0, j = 0; i < Cipher.Length - 1; i++, j+=2) {
cip = Cipher[i].ToString(); if (cip.Length == 1)
cip = "000" + cip; else if (cip.Length == 2) cip = "00" + cip; else if (cip.Length == 3) cip = "0" + cip;
SCipher[j] = Convert.ToInt32(cip.Substring(0, 2)); SCipher[j + 1] = Convert.ToInt32(cip.Substring(2,2)); mb += SCipher[j].ToString() + " " + SCipher[j +1]. ToString() + " ";
}
MessageBox.Show("Encryption succeed", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information); opnCI2.Enabled = true;
}
private void opnCI2_Click_1(object sender, EventArgs e) {
OpenFileDialog openDialogEnkrip2 = new OpenFileDialog(); openDialogEnkrip2.Title = "Open Cover Image";
openDialogEnkrip2.Filter = "Image Files(*.bmp)|*.bmp"; DialogResult dr = openDialogEnkrip2.ShowDialog();
if (dr == DialogResult.OK) {
gambar = Image.FromFile(openDialogEnkrip2.FileName); newBitmap = new Bitmap(openDialogEnkrip2.FileName); pictureBox1.Image = gambar;
textBox5.Text = gambar.Width.ToString(); textBox6.Text = gambar.Height.ToString();
string path =
double fileSizeKB = fileInfo.Length / 1024; sizeci2.Text = fileSizeKB.ToString();
btnEmbed2.Enabled = true; }
}
private void btnEmbed2_Click(object sender, EventArgs e) {
Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox1.Image); int x = image.Width;
int y = image.Height;
if ((x * 3 * 2) - 4 < SCipher.Length) {
MessageBox.Show("Message is over limit of image pixel\r\nPlease choose another image,", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else {
string px = "", px2 = "";
Bitmap output = new Bitmap(image.Width, 1); Bitmap output2 = new Bitmap(image.Width, 1); for (int i = 0; i < 1; i++)
{
for (int j = 0; j < x; j++) {
output.SetPixel(j, i, Color.FromArgb (255, 0, 0, 0));
output2.SetPixel(j, i, Color.FromArgb (255, 0, 0, 0));
} }
int x1 = 0, x2 = 0, index = 0, count = 0; for (int i = 0; i < y; i++)
{
for (int j = 0; j < x * 2; j++) {
if (index == SCipher.Length) goto habis;
if (count % 2 == 0) {
if (index + 2 == SCipher.Length) {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x1++; count++; }
else if (index + 1 == SCipher.Length) {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index], 0, 0)); index++;
count++; }
else {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], (int)SCipher[index + 2])); index += 3;
x1++; count++; }
} else {
if (index + 2 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x2++; count++; }
else if (index + 1 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index], 0, 0)); index++;
x2++; count++; }
else {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], (int)SCipher[index + 2])); index += 3;
x2++; count++; }
} } } habis:
for (int i = 0; i < 1; i++) {
for (int j = 0; j < x; j++) {
int r = output.GetPixel(j, i).R; int g = output.GetPixel(j, i).G; int b = output.GetPixel(j, i).B;
px += r.ToString() + " " + g.ToString() + " " + b.ToString() + "\r\n";
px2 += r2.ToString() + " " + g2.ToString() + " " + b2.ToString() + "\r\n";
} }
Bitmap outputImage = new Bitmap(image.Width, image.Height + 2,System.Drawing.Imaging.
PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(outputImage)) {
graphics.DrawImage(output, new Rectangle (new Point(), output.Size),
new Rectangle(new Point(), output.Size), GraphicsUnit.Pixel);
graphics.DrawImage(image, new Rectangle
(new Point(0, output.Height + 1), image.Size), new Rectangle(new Point(), image.Size), GraphicsUnit.Pixel);
graphics.DrawImage(output2, new Rectangle
(new Point(0, image.Height + 1), output2.Size), new Rectangle(new Point(), output2.Size), GraphicsUnit.Pixel);
}
pictureBox2.Image = outputImage; sw.Stop();
label12.Text = "Waktu Embed :\r\n " + sw.Elapsed; DialogResult dialog = MessageBox.Show("Embedding
succeed\rplease save stego image", "Info",
MessageBoxButtons.OK, MessageBoxIcon.Information); SaveSI2.Enabled = true;
} }
private void SaveSI2_Click_1(object sender, EventArgs e) {
SaveFileDialog saveDialogenkrip2 = new SaveFileDialog(); saveDialogenkrip2.Title = "Save Stego Image";
saveDialogEnkrip2.Filter = "Image Files(*.bmp)|*.bmp";
if (DialogResult.OK == saveDialogEnkrip2.ShowDialog()) {
pictureBox2.Image.Save(saveDialogEnkrip2.FileName, ImageFormat.Bmp);
{
MessageBox.Show("Stego Image Saved", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information); }
} }
private void next2_Click(object sender, EventArgs e) {
this.Hide();
Form6 fr6 = new Form6(); fr6.ShowDialog();
Kode Program Form decryption1 :
using System;using System.Collections.Generic; using System.ComponentModel; using System.Data;
using System.Drawing; using System.Linq; using System.Text;
using System.Windows.Forms; using System.IO;
using System.Numerics;
using System.Drawing.Imaging; using System.Diagnostics; namespace kriptostegano {
public partial class Form6 : Form {
Bitmap newBitmap; Image gambar;
BigInteger[] Cipher; int[] SCipher;
public Form6() {
InitializeComponent(); }
private void homeToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form1 fr1 = new Form1(); fr1.ShowDialog();
}
private void aboutToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form2 fr2 = new Form2(); fr2.ShowDialog();
}
private void helpToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form3 fr3 = new Form3(); fr3.ShowDialog();
}
private void startToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form4 fr4 = new Form4(); fr4.ShowDialog();
private void exitToolStripMenuItem_Click(object sender, EventArgs e) {
DialogResult dialog = MessageBox.Show("Are you sure to exit this application?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes) {
Application.Exit(); }
}
private void Form6_Load(object sender, EventArgs e) {
GroupBox grup = Application.OpenForms["Form4"]. Controls["groupBox1"] as GroupBox;
TextBox nilaiP = grup.Controls["prima"] as TextBox; prima2.Text = nilaiP.Text;
GroupBox grup2 = Application.OpenForms["Form4"]. Controls["groupBox3"] as GroupBox;
GroupBox grup3 = grup2.Controls["groupBox2"] as GroupBox; TextBox dA = grup3.Controls["nilaidA"] as TextBox;
nilaidA2.Text = dA.Text;
btnExtract2.Enabled = false; btnDecrypt1.Enabled = false; opnCI3.Enabled = false; btnEmbed3.Enabled = false; SaveSI3.Enabled = false; }
private void opnSI2_Click_1(object sender, EventArgs e) {
OpenFileDialog openDialogDekrip1 = new OpenFileDialog(); openDialogDekrip1.Title = "Open Stego Image";
openDialogDekrip1.Filter = "Image Files(*.bmp)|*.bmp"; DialogResult dr = openDialogDekrip1.ShowDialog();
if (dr == DialogResult.OK) {
gambar = Image.FromFile(openDialogDekrip1.FileName); newBitmap = new Bitmap(openDialogDekrip1.FileName); pictureBox3.Image = gambar;
btnExtract2.Enabled = true; }
}
private void btnExtract2_Click(object sender, EventArgs e) {
Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox3.Image); int x = image.Width;
int y = image.Height; string px = "";
int r, g, b;
string strR, strG, strB; for (int i = 0; i < x; i++) {
if (j == 0 || j == y - 1) {
r = image.GetPixel(i, j).R; if (r.ToString().Length == 1) strR = "0" + r;
else
strR = r.ToString(); g = image.GetPixel(i, j).G; if (g.ToString().Length == 1) strG = "0" + g;
else
strG = g.ToString(); b = image.GetPixel(i, j).B; if (b.ToString().Length == 1) strB = "0" + b;
else
strB = b.ToString();
px += strR + " " + strG + " " + strB + " "; }
} }
int count = 1;
for (int i = 0; i < px.Length; i++) {
if (px[i] == ' ') {
if (count % 2 != 0)
px = px.Remove(i, 1); count++;
} }
int index = px.IndexOf(" 0000 0000"); if (index < 0)
{
MessageBox.Show("no hidden message\rplease input another image", "Info", MessageBoxButtons.OK, MessageBoxIcon.Warning);
} else {
px = px.Substring(0, index); string[] temp = px.Split(' '); px = "";
for (int i = 0; i < temp.Length; i++) {
px += Convert.ToInt32(temp[i]) + " "; }
cipher2dekrip1.Text = px; sw.Stop();
label11.Text = "Waktu Extract :\r\n " + sw.Elapsed; MessageBox.Show("Extracting succeed\r please input p
and dA", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
btnDecrypt1.Enabled = true; }
private void btnDecrypt1_Click(object sender, EventArgs e) {
string plaintext = cipher2dekrip1.Text; cipher3dekrip1.Text = "";
string[] temp = plaintext.Split(' '); Cipher = new BigInteger[temp.Length];
for (int i = 0; i < Cipher.Length - 1; i++) {
Cipher[i] = BigInteger.Pow(BigInteger.Parse(temp[i]), (int)Convert.ToInt32(nilaidA2.Text)) %
(int)Convert.ToInt32(prima2.Text);
cipher3dekrip1.Text += Cipher[i].ToString() + " "; }
SCipher = new int[(temp.Length * 2) - 2]; string mb = "";
string cip;
for (int i = 0, j = 0; i < Cipher.Length - 1; i++, j +=2) {
cip = Cipher[i].ToString(); if (cip.Length == 1)
cip = "000" + cip; else if (cip.Length == 2) cip = "00" + cip; else if (cip.Length == 3) cip = "0" + cip;
SCipher[j] = Convert.ToInt32(cip.Substring(0, 2)); SCipher[j + 1] = Convert.ToInt32(cip.Substring(2,2)); mb += SCipher[j].ToString() + " " + SCipher[j + 1].ToString() + " ";
}
MessageBox.Show("Decryption succeed", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information); opnCI3.Enabled = true;
}
private void opnCI3_Click_1(object sender, EventArgs e) {
OpenFileDialog openDialogDekrip1 = new OpenFileDialog(); openDialogDekrip1.Title = "Open Cover Image";
openDialogDekrip1.Filter = "Image Files(*.bmp)|*.bmp"; DialogResult dr = openDialogDekrip1.ShowDialog();
if (dr == DialogResult.OK) {
gambar = Image.FromFile(openDialogDekrip1.FileName); newBitmap = new Bitmap(openDialogDekrip1.FileName); pictureBox1.Image = gambar;
textBox5.Text = gambar.Width.ToString(); textBox6.Text = gambar.Height.ToString(); string path =
Path.GetFullPath(openDialogDekrip1.FileName); FileInfo fileInfo = new FileInfo(path);
double fileSizeKB = fileInfo.Length / 1024; sizeci3.Text = fileSizeKB.ToString();
btnEmbed3.Enabled = true; }
}
{
Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox1.Image); int x = image.Width;
int y = image.Height;
if ((x * 3 * 2) - 4 < SCipher.Length) {
MessageBox.Show("Message is over limit of image pixel\r\nPlease choose another image,", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else {
string px = "", px2 = "";
Bitmap output = new Bitmap(image.Width, 1); Bitmap output2 = new Bitmap(image.Width, 1); for (int i = 0; i < 1; i++)
{
for (int j = 0; j < x; j++) {
output.SetPixel(j, i, Color.FromArgb (255, 0, 0, 0));
output2.SetPixel(j, i, Color.FromArgb (255, 0, 0, 0));
} }
int x1 = 0, x2 = 0, index = 0, count = 0; for (int i = 0; i < y; i++)
{
for (int j = 0; j < x * 2; j++) {
if (index == SCipher.Length) goto habis;
if (count % 2 == 0) {
if (index + 2 == SCipher.Length) {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x1++; count++; }
else if (index + 1 == SCipher.Length) {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index], 0, 0)); index++;
x1++; count++; }
else {
output.SetPixel(x1, i, Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index
index += 3; x1++;
count++; }
} else {
if (index + 2 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], 0)); index += 2;
x2++; count++; }
else if (index + 1 == SCipher.Length) {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index], 0, 0)); index++;
x2++; count++; }
else {
output2.SetPixel(x2, i,Color.FromArgb (255, (int)SCipher[index],
(int)SCipher[index + 1], (int)SCipher[index + 2])); index += 3;
x2++; count++; }
} } } habis:
for (int i = 0; i < 1; i++) {
for (int j = 0; j < x; j++) {
int r = output.GetPixel(j, i).R; int g = output.GetPixel(j, i).G; int b = output.GetPixel(j, i).B;
px += r.ToString() + " " + g.ToString() + " " + b.ToString() + "\r\n";
int r2 = output2.GetPixel(j, i).R; int g2 = output2.GetPixel(j, i).G; int b2 = output2.GetPixel(j, i).B;
px2 += r2.ToString() + " " + g2.ToString() + " " + b2.ToString() + "\r\n";
} }
Bitmap outputImage = new Bitmap(image.Width, image.Height + 2, System.Drawing.Imaging.
using (Graphics graphics = Graphics.FromImage(outputImage)) {
graphics.DrawImage(output, new Rectangle(new Point(), output.Size),
new Rectangle(new Point(), output.Size), GraphicsUnit.Pixel);
graphics.DrawImage(image, new Rectangle(new Point(0, output.Height + 1), image.Size), new Rectangle(new Point(), image.Size), GraphicsUnit.Pixel);
graphics.DrawImage(output2, new Rectangle
(new Point(0, image.Height + 1), output2.Size), new Rectangle(new Point(), output2.Size),
GraphicsUnit.Pixel); }
pictureBox2.Image = outputImage;
sw.Stop();
label12.Text = "Waktu Embed :\r\n " + sw.Elapsed; DialogResult dialog = MessageBox.Show("Embedding succeed\rplease save stego image", "Info",
MessageBoxButtons.OK, MessageBoxIcon.Information); SaveSI3.Enabled = true;
} }
private void SaveSI3_Click_1(object sender, EventArgs e) {
SaveFileDialog saveDialogDekrip1 = new SaveFileDialog(); saveDialogDekrip1.Title = "Save Stego Image";
saveDialogDekrip1.Filter = "Image Files(*.bmp)|*.bmp";
if (DialogResult.OK == saveDialogDekrip1.ShowDialog()) {
pictureBox2.Image.Save(saveDialogDekrip1.FileName, ImageFormat.Bmp);
{
MessageBox.Show("Stego Image Saved", "Info", MessageBoxButtons.OK,MessageBoxIcon.Information); }
} }
private void next3_Click(object sender, EventArgs e) {
this.Hide();
Form7 fr7 = new Form7(); fr7.ShowDialog();
Kode Program Form decryption2 :
using System;using System.Collections.Generic; using System.ComponentModel; using System.Data;
using System.Drawing; using System.Linq; using System.Text;
using System.Windows.Forms; using System.IO;
using System.Drawing.Imaging; using System.Numerics;
using System.Diagnostics;
namespace kriptostegano {
public partial class Form7 : Form {
Bitmap newBitmap; Image gambar;
public Form7() {
InitializeComponent(); }
private void homeToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form1 fr1 = new Form1(); fr1.ShowDialog();
}
private void aboutToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form2 fr2 = new Form2(); fr2.ShowDialog();
}
private void helpToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form3 fr3 = new Form3(); fr3.ShowDialog();
}
private void startToolStripMenuItem_Click(object sender, EventArgs e) {
this.Hide();
Form4 fr4 = new Form4(); fr4.ShowDialog();
}
{
DialogResult dialog = MessageBox.Show("Are you sure to exit this application?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes) {
Application.Exit(); }
}
private void Form7_Load(object sender, EventArgs e) {
GroupBox grup = Application.OpenForms["Form4"]. Controls["groupBox1"] as GroupBox;
TextBox nilaiP = grup.Controls["prima"] as TextBox; prima3.Text = nilaiP.Text;
GroupBox grup2 = Application.OpenForms["Form5"]. Controls["groupBox3"] as GroupBox;
GroupBox grup3 = grup2.Controls["groupBox2"] as GroupBox; TextBox dB = grup3.Controls["nilaidB"] as TextBox;
textBox3.Text = dB.Text;
btnExtract3.Enabled = false; btnDecrypt2.Enabled = false; saveplainawal.Enabled = false; }
private void opnSI3_Click_1(object sender, EventArgs e) {
OpenFileDialog openDialogDekrip2 = new OpenFileDialog(); openDialogDekrip2.Title = "Open Stego Image";
openDialogDekrip2.Filter = "Image Files(*.bmp)|*.bmp"; DialogResult dr = openDialogDekrip2.ShowDialog();
if (dr == DialogResult.OK) {
gambar = Image.FromFile(openDialogDekrip2.FileName); newBitmap = new Bitmap(openDialogDekrip2.FileName); pictureBox3.Image = gambar;
btnExtract3.Enabled = true; }
}
private void btnExtract3_Click(object sender, EventArgs e) {
Stopwatch sw = new Stopwatch(); sw.Start();
Bitmap image = new Bitmap(pictureBox3.Image); int x = image.Width;
int y = image.Height; string px = "";
int r, g, b;
for (int j = 0; j < y; j++) {
if (j == 0 || j == y - 1) {
r = image.GetPixel(i, j).R; if (r.ToString().Length == 1) strR = "0" + r;
else
strR = r.ToString(); g = image.GetPixel(i, j).G; if (g.ToString().Length == 1) strG = "0" + g;
else
strG = g.ToString(); b = image.GetPixel(i, j).B; if (b.ToString().Length == 1) strB = "0" + b;
else
strB = b.ToString();
px += strR + " " + strG + " " + strB + " "; }
} }
int count = 1;
for (int i = 0; i < px.Length; i++) {
if (px[i] == ' ') {
if (count % 2 != 0)
px = px.Remove(i, 1); count++;
} }
int index = px.IndexOf(" 0000 0000"); if (index < 0)
{
DialogResult dialognohidden = MessageBox.Show("no hidden message\rplease input another image", "Info", MessageBoxButtons.OK, MessageBoxIcon.Warning);
} else {
px = px.Substring(0, index); string[] temp = px.Split(' '); px = "";
for (int i = 0; i < temp.Length; i++) {
px += Convert.ToInt32(temp[i]) + " "; }
cipher3dekrip2.Text = px; sw.Stop();
label1.Text = "Waktu Extract :\r\n " + sw.Elapsed; DialogResult dialogextract =
MessageBox.Show("Extracting succeed\rplease input p and dB", "Info", MessageBoxButtons.OK,
MessageBoxIcon.Information); btnDecrypt2.Enabled = true;
private void btnDecrypt2_Click(object sender, EventArgs e) {
BigInteger dB = BigInteger.Parse(textBox3.Text); string tes = cipher3dekrip2.Text;
string[] temp = tes.Split(' ');
BigInteger[] Cipher = new BigInteger[temp.Length]; string ascii;
for (int i = 0; i < Cipher.Length - 1; i++) {
Cipher[i] = BigInteger.Pow(BigInteger.Parse(temp[i]), (int)Convert.ToInt32(textBox3.Text)) %
(int)Convert.ToInt32(prima3.Text);
ascii =char.ConvertFromUtf32(Convert.ToInt32 (Cipher[i].ToString()));
plainawal.Text += ascii; { saveplainawal.Enabled = true;
} }
MessageBox.Show("Decryption succeed", "Info", MessageBoxButtons.OK, MessageBoxIcon.Information); }
private void saveplainawal_Click(object sender, EventArgs e) {
SaveFileDialog saveFileDekrip2 = new SaveFileDialog(); saveFileDekrip2.Title = "Save text Files";
saveFileDekrip2.Filter = "txt files (*.txt)|*.txt"; if (saveFileDekrip2.ShowDialog() == DialogResult.OK) {
using (Stream s = File.Open(saveFileDekrip2.FileName, FileMode.CreateNew))
using (StreamWriter sw = new StreamWriter(s)) {
sw.Write(plainawal.Text);
MessageBox.Show("plaintext saved", "Info",
MessageBoxButtons.OK,MessageBoxIcon.Information);
} }
