Implementasi Kriptografi Algoritma Elgamal Dengan Kombinasi Steganografi Teknik End Of File (Eof) Untuk Keamanan File Text Dan File Citra
LISTING PROGRAM
1. Form Utama
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.Numerics;
namespace TA_091401006_alespanjaitan {
public partial class Halaman_Utama : Form {
Pengaman aman = new Pengaman();
pengungkapan ungkap = new pengungkapan(); hitungmse mse = new hitungmse();
Bantuan fbantu = new Bantuan(); Tentang ftentang = new Tentang();
public Halaman_Utama() {
InitializeComponent(); }
private void Halaman_Utama_Load(object sender, EventArgs e) {
CenterToScreen(); char a;
int b = 169;
a = Convert.ToChar(b);
label1.Text = a.ToString() + " Ales Sanro Sotardodo Panjaitan";
}
private void button1_Click(object sender, EventArgs e) {
Application.Exit(); }
private void filleToolStripMenuItem_Click(object sender,
EventArgs e)
{ }
private void tutupToolStripMenuItem_Click(object sender,
EventArgs e)
{
Application.Exit(); }
(2)
private void pengamananToolStripMenuItem_Click(object sender,
EventArgs e)
{
aman.ShowDialog(); }
private void gbr_pengamanan_Click(object sender, EventArgs e) {
aman.ShowDialog(); }
private void pengungkapanToolStripMenuItem_Click(object sender, EventArgs e)
{
ungkap.ShowDialog(); }
private void gbr_pengungkapan_Click(object sender, EventArgs e)
{
ungkap.ShowDialog(); }
private void tentangProgrammerToolStripMenuItem_Click(object sender, EventArgs e)
{
ftentang.ShowDialog(); }
private void
menggunakanAplikasiToolStripMenuItem_Click(object sender,
EventArgs e)
{
fbantu.ShowDialog(); }
private void pictureBox1_Click(object sender, EventArgs e) {
mse.ShowDialog(); }
private void toolStripMenuItem2_Click(object sender,
EventArgs e)
{
mse.ShowDialog(); }
private void Halaman_Utama_FormClosed(object sender,
FormClosedEventArgs e)
{
Application.Exit(); }
} }
(3)
2. Form Pengamanan (Embedding dan Enkripsi)
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;
namespace TA_091401006_alespanjaitan {
public partial class Pengaman : Form {
endOfFile embd = new endOfFile();
prosesBilangan bilangan = new prosesBilangan(); elgamal enkripDekrip = new elgamal();
inputOutput io = new inputOutput();
string propgambar,propteks;
BigInteger sebelum=123, nilai_hitung_a;
public Pengaman() {
InitializeComponent(); }
private void Pengaman_Load(object sender, EventArgs e) {
CenterToScreen();
bt_embed.Enabled = bt_spData.Enabled = sp_sgimage.Enabled = bt_bgkt_g.Enabled = false;
bt_bilprim.Enabled = bt_enkripsi.Enabled = bt_htgk.Enabled = bt_htgy.Enabled = false;
bt_nilaiy.Enabled = bt_spData.Enabled = bk_teks.Enabled = false;
gbr_asli.Image = gb_sgimage.Image = gb_cpimage.Image = null;
propCA.Text = propText.Text = "";
teks_asli.Text = bilprima.Text = nilg.Text = nilk.Text = nilx.Text = nily.Text = "";
}
private void bk_gbr_asli_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.Default;
gbr_asli.Image = io.bukagbr("Format Bitmap (*.bmp)|*.bmp|Format JPEG(*.jpg)|*.jpg"); if (gbr_asli.Image != null)
{
propgambar = "Lebar : " + gbr_asli.Image.Width.ToString()
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+ " Piksel\nTinggi : " +
gbr_asli.Image.Height.ToString() + " Piksel\n\n"; propCA.Text = propgambar;
bk_teks.Enabled = true; }
if (teks_asli.Text != "") bk_teks.Enabled = true; }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.WaitCursor; }
}
private void bk_gbr_sgimage_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.WaitCursor;
gb_sgimage.Image = io.bukagbr("Format Bitmap (*.bmp)|*.bmp");
if (gb_sgimage.Image != null) {
bt_bilprim.Enabled = true; propCS.Text = "Lebar : " +
gb_sgimage.Image.Width.ToString() + " Piksel\nTinggi : " +
gb_sgimage.Image.Height.ToString() + " Piksel"; }
}
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalahan pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
}
private void bk_teks_Click(object sender, EventArgs e) {
try {
teks_asli.Text = io.bukateks(); if (teks_asli.Text != "")
{
bt_embed.Enabled = true;
propText.Text = "Panjang : " +
teks_asli.TextLength.ToString() + " Karakter"; }
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catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
private void sp_sgimage_Click(object sender, EventArgs e) {
try {
if (io.spGambar(gb_sgimage.Image))
pesanInformasi("Gambar berhasil di simpan"); }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
private void bt_embed_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.WaitCursor; DateTime awal, akhir;
string selisih; awal = DateTime.Now;
Bitmap gbasli = new Bitmap(gbr_asli.Image); Bitmap sg = new Bitmap(embd.embed(gbasli,
teks_asli)); gb_sgimage.Image = sg;
propCS.Text = "Lebar : " + sg.Width.ToString()
+ " Piksel\nTinggi : " + sg.Height.ToString() + " Piksel";
sp_sgimage.Enabled = true; bt_bilprim.Enabled = true; akhir = DateTime.Now; selisih =
akhir.Subtract(awal).TotalMilliseconds.ToString() ;
pesanInformasi("Lama Embed : " + selisih + " Milliseconds");
}
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
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private void bt_enkripsi_Click(object sender, EventArgs e) {
try {
BigInteger p, g, x, y, k;
Cursor.Current = Cursors.WaitCursor; DateTime awal, akhir;
awal = DateTime.Now;
p = BigInteger.Parse(bilprima.Text); g = BigInteger.Parse(nilg.Text); x = BigInteger.Parse(nilx.Text); y = BigInteger.Parse(nily.Text); k = BigInteger.Parse(nilk.Text);
nilai_hitung_a = bilangan.moduloexponensial(g, k, p); gb_cpimage.Image =
enkripDekrip.enkripsi((Bitmap)gb_sgimage.Image,p,y ,k);
bt_spData.Enabled = true; akhir = DateTime.Now; string selisih =
akhir.Subtract(awal).TotalMilliseconds.ToString(); propCC.Text = "\nLebar : " +
gb_cpimage.Image.Width.ToString() + " Piksel\nTinggi : " +
gb_cpimage.Image.Height.ToString() + " Piksel"; pesanInformasi("Lama Enkripsi : " + selisih); }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
}
private void bt_htgy_Click(object sender, EventArgs e) {
try {
BigInteger prim, g, x;
prim = BigInteger.Parse(bilprima.Text); g = BigInteger.Parse(nilg.Text);
x = BigInteger.Parse(nilx.Text);
nily.Text = bilangan.moduloexponensial(g, x, prim).ToString();
bt_htgk.Enabled = true; }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
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private void bt_bilprim_Click(object sender, EventArgs e) {
DateTime wkt1, wkt2; BigInteger bwh,atas;
try {
Cursor.Current = Cursors.WaitCursor; bwh = 3;
if (pilihbit.Text == "P <= 8-bit") {
atas = 255; }
else if (pilihbit.Text == "P <= 16-bit") {
atas = 65535; }
else if (pilihbit.Text == "P <= 24-bit") {
atas = 16777215; }
else if (pilihbit.Text == "P <= 32-bit") {
atas = 4294967295; }
else if (pilihbit.Text == "P <= 64-bit") {
atas = 18446744073709551615; }
else if (pilihbit.Text == "P <= 128-bit") {
atas =
BigInteger.Parse("3402823669209384634633746074317682
11455"); }
else if (pilihbit.Text == "P <= 256-bit") {
atas =
BigInteger.Parse("1157920892373161954235709850086879
07853269984665640564039457584007913129639935"); }
else if (pilihbit.Text == "P <= 512-bit"){ atas =
BigInteger.Parse("1340780792994259709957402499820584
6127479365820592393377723561443721764030073546976801 8742981669034276900318581864860508537538828119465699 46433649006084096");
}
else if (pilihbit.Text == "P <= 1-Mb") {
atas =
BigInteger.Parse("1797693134862315907729305190789024
7336179769789423065727343008115773267580550096313270 8477322407536021120113879871393357658789768814416622 4928474306394741243777678934248654852763022196012460 9411945308295208500576883815068234246288147391311054 0827237163350510684586298239947245938479716304835356 329624224137216");
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else {
atas = 65535; }
wkt1 = DateTime.Now; bilprima.Text =
bilangan.bangkitprima(bwh,atas).ToString(); bt_bgkt_g.Enabled = true;
wkt2 = DateTime.Now; string lamaeksekusi =
wkt2.Subtract(wkt1).TotalMilliseconds.ToString(); pesanInformasi("Bilangan prima menggunakan
"+(bilangan.ceksuku(BigInteger.Parse(bilprima.Text))
*8).ToString()+"\n"+lamaeksekusi+ "Milliseconds"); }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
}
private void bt_spData_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.WaitCursor;
if (io.spData(gb_cpimage.Image, bilprima.Text, nilx.Text, nilai_hitung_a.ToString()))
pesanInformasi("Gambar dan Kunci berhasil di simpan");
}
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
}
private void bt_bgkt_gx_Click(object sender, EventArgs e) {
try {
BigInteger zi;
if (nilg.Text == "") {
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} else {
zi = BigInteger.Parse(nilg.Text); }
nilg.Text = bilangan.acak(997, zi,
BigInteger.Parse(bilprima.Text)).ToString();
bt_nilaiy.Enabled = true; }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
private void bt_nilaiy_Click(object sender, EventArgs e) {
try {
BigInteger zi;
if (nilx.Text == "") {
zi = 1; }
else {
zi = BigInteger.Parse(nilx.Text); }
nilx.Text = bilangan.acak(997, zi,
BigInteger.Parse(bilprima.Text)).ToString();
bt_htgy.Enabled = true; }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
private void bt_htgk_Click(object sender, EventArgs e) {
try {
BigInteger p,zi;
if (nilk.Text == "") {
zi = 1; }
else {
zi = BigInteger.Parse(nilk.Text); }
p = BigInteger.Parse(bilprima.Text); zi = bilangan.acak(997, zi, p);
while (!(BigInteger.GreatestCommonDivisor(p, zi)==1)) {
zi = bilangan.acak(997, zi, p); }
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nilk.Text = zi.ToString(); bt_enkripsi.Enabled = true; }
catch (Exception ex) {
pesanKesalahan("Terjadi Kesalah pada \n- " + ex.ToString());
} }
private void teks_asli_Leave(object sender, EventArgs e) {
if (teks_asli.Text == "" || gbr_asli.Image == null) bt_embed.Enabled = false;
else
bt_embed.Enabled = true; if (teks_asli.Text != "") {
bt_embed.Enabled = true; propteks = "Panjang : " +
teks_asli.TextLength.ToString() + " Karakter"; propText.Text = propteks;
} }
private void check_Click(object sender, EventArgs e) {
try {
Bitmap gbr = new Bitmap(gbr_asli.Image); Cursor.Current = Cursors.WaitCursor; if (embd.checkgbr(gbr))
propCA.Text = propgambar + "Tidak ada kunci"; else
propCA.Text = propgambar + "Ada kunci"; if (embd.checktext(teks_asli))
propText.Text = propteks + "\nTidak ada kunci"; else
propText.Text = propteks + "\nAda kunci"; }
catch (Exception a) {
pesanKesalahan("Terjadi kesalahan pada \n-" + a.ToString());
}
finally {
Cursor.Current = Cursors.Default; }
}
void pesanInformasi(string pesan) {
MessageBox.Show(pesan, "Informasi", MessageBoxButtons.OK,
MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1);
}
void pesanKesalahan(string pesan) {
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MessageBox.Show(pesan, "Kesalahan", MessageBoxButtons.OK,
MessageBoxIcon.Warning,
MessageBoxDefaultButton.Button1);
}
private void Pengaman_FormClosed(object sender,
FormClosedEventArgs e)
{ } } }
3. Form Pengungkapan (Ekstraksi dan Dekripsi)
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;
namespace TA_091401006_alespanjaitan {
public partial class pengungkapan : Form {
prosesBilangan bilangan = new prosesBilangan(); elgamal enkripDekrip = new elgamal();
endOfFile embedEkstrak = new endOfFile(); inputOutput io = new inputOutput();
public pengungkapan() {
InitializeComponent(); }
private void pengungkapan_Load(object sender, EventArgs e) {
CenterToScreen(); gbr_asli.Image = null; gbr_sgimage.Image = null; gbr_asli.Image = null; gb_hasil.Image = null; teks_asli.Text = ""; nilp.Text = ""; nila.Text = ""; nilx.Text = "";
bt_dekripsi.Enabled = false; bt_ekstrak.Enabled = false;
bt_simpangbr_sgimage.Enabled = false; bk_teks.Enabled = false;
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}
private void bk_cpimage_Click(object sender, EventArgs e) {
try {
gbr_asli.Image = io.bukagbr("Format Bitmap (*.bmp)|*.bmp");
if (gbr_asli.Image != null) {
propCA.Text = "\nLebar : " +
gbr_asli.Image.Width + "Piksel\nTinggi : " + gbr_asli.Image.Height + " Piksel";
bt_bukakunci.Enabled = true; }
} catch {
pesanKesalahan("Terjadi kesalahan"); }
}
private void bt_bukagbr_Click(object sender, EventArgs e) {
gbr_sgimage.Image = io.bukagbr("Format Bitmap (*.bmp)|*.bmp");
if (gbr_sgimage.Image != null) {
bt_bukakunci.Enabled = true; bt_ekstrak.Enabled = true; }
}
private void bk_teks_Click(object sender, EventArgs e) {
SaveFileDialog simpan = new SaveFileDialog();
simpan.Filter = "Format Bitmap (*.bmp)|*.bmp|Format JPEG(*.jpg)|*.jpg";
if (gb_hasil.Image != null) {
if (simpan.ShowDialog() == DialogResult.OK) {
RichTextBox sementara = new RichTextBox(); sementara.Text = "";
FileStream teks = new FileStream(simpan.FileName + ".txt", FileMode.CreateNew,
FileAccess.Write);
StreamWriter tulis = new StreamWriter(teks); for (int i = 0; i < teks_asli.TextLength; i++) {
sementara.Text += teks_asli.Text[i]; if (teks_asli.Text[i] == 13 |
teks_asli.TextLength == (i + 1)) tulis.WriteLine(teks_asli.Text); }
tulis.Close(); teks.Close();
gb_hasil.Image.Save(simpan.FileName + ".bmp", System.Drawing.Imaging.ImageFormat.Bmp);
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pesanInformasi("Gambar dan pesan berhasil di simpan");
} } else {
pesanKesalahan("Gambar Kosong"); }
}
private void bt_simpangbr_sgimage_Click(object sender,
EventArgs e)
{
if (gbr_sgimage.Image != null) {
if (io.spGambar(gbr_sgimage.Image))
pesanInformasi("Gambar berhasil di simpan"); }
else {
pesanKesalahan("Gambar masih kosong..."); }
}
private void bt_dekripsi_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.WaitCursor; DateTime awal, akhir;
awal = DateTime.Now; gbr_sgimage.Image =
enkripDekrip.dekripsi((Bitmap)(gbr_asli.Image),
BigInteger.Parse(nilp.Text),
BigInteger.Parse(nilx.Text),
BigInteger.Parse(nila.Text));
akhir = DateTime.Now; string selisih =
akhir.Subtract(awal).TotalMilliseconds.ToString(); propSC.Text = "\nTinggi : " +
gbr_sgimage.Image.Height.ToString() + " Piksel\nLebar : " +
gbr_sgimage.Image.Width.ToString() + " Piksel"; bt_simpangbr_sgimage.Enabled = true;
bt_ekstrak.Enabled = true;
pesanInformasi("Lama dekripsi " + selisih + " Millisecond");
}
catch (Exception ex) {
pesanKesalahan("Silahkan periksa semua keabsahan informasi anda\n* Terjadi Kesalah pada \n- " + ex.ToString());
}
finally {
Cursor.Current = Cursors.WaitCursor; }
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private void bt_ekstrak_Click(object sender, EventArgs e) {
DateTime awal = DateTime.Now, akhir; try
{
Cursor.Current = Cursors.WaitCursor;
Bitmap gbrstego = new Bitmap(gbr_sgimage.Image); int status = embedEkstrak.cekposisi(gbrstego); if (status != 0)
{
gb_hasil.Image = embedEkstrak.pisahgbr(gbrstego, status);
teks_asli.Text = embedEkstrak.pisahteks(gbrstego, status).Text;
propHasil.Text = "\nLebar : " + gb_hasil.Image.Width.ToString() + " Piksel\nTinggi : "
+ gb_hasil.Image.Height.ToString() + " Piksel\n\nPanjang : " +
teks_asli.TextLength.ToString() + " Karakter"; bk_teks.Enabled = true;
} else {
pesanKesalahan("Maaf, Tidak menemukan teks dalam Citra");
} } catch {
pesanKesalahan("Terjadi Kesalahan"); }
finally {
Cursor.Current = Cursors.Default; akhir = DateTime.Now;
pesanInformasi("Lama Ekstrak : " +
akhir.Subtract(awal).TotalMilliseconds.ToString() + " Milliseconds");
} }
private void bt_bukakunci_Click(object sender, EventArgs e) {
try {
OpenFileDialog bukatxt = new OpenFileDialog(); bukatxt.Filter = "File Text (*.txt)|*.txt"; if (DialogResult.OK == bukatxt.ShowDialog()) {
string bacaloh = "";
StreamReader objReader = new
StreamReader(bukatxt.FileName);
bacaloh = objReader.ReadLine(); while (bacaloh != null)
{
if (cekstring(bacaloh) == "NILAIP") {
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nilp.Text = ceknilai(bacaloh); }
if (cekstring(bacaloh) == "NILAIA") {
nila.Text = ceknilai(bacaloh); }
if (cekstring(bacaloh) == "NILAIX") {
nilx.Text = ceknilai(bacaloh); }
bacaloh = objReader.ReadLine(); }
objReader.Close();
label4.Text = "Kunci menggunakan : " +
(bilangan.ceksuku(BigInteger.Parse(nilp.Text)) * 8).ToString() + " - bit";
bt_dekripsi.Enabled = true; }
} catch {
pesanKesalahan("Ada Kesalahan"); }
}
public string cekstring(string kiriman) {
string maukirim = "";
for (int i = 0; i < kiriman.Length; i++) {
if (kiriman[i] != ' ') {
maukirim = maukirim + kiriman[i]; }
else {
break; }
}
return maukirim; }
public string ceknilai(string kiriman) {
string maukirim = "";
for (int i = kiriman.Length - 1; i >= 0; i--) {
if (kiriman[i] != ' ' & kiriman[i] >= '0' & kiriman[i] <= '9')
{
maukirim = kiriman[i] + maukirim; }
else {
break; }
(16)
return maukirim; }
void pesanInformasi(string pesan) {
MessageBox.Show(pesan, "Informasi", MessageBoxButtons.OK,
MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1);
}
void pesanKesalahan(string pesan) {
MessageBox.Show(pesan, "Kesalahan", MessageBoxButtons.OK,
MessageBoxIcon.Warning,
MessageBoxDefaultButton.Button1);
}
private void pengungkapan_FormClosed(object sender,
FormClosedEventArgs e)
{ } } }
4. Form Hitung Mean Squared Error (MSE)
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.Drawing.Imaging; using System.Threading;
namespace TA_091401006_alespanjaitan {
public partial class hitungmse : Form {
hitungMseClass mse = new hitungMseClass(); public hitungmse()
{
InitializeComponent(); }
private void hitungmse_Load(object sender, EventArgs e) {
CenterToParent(); }
private void bt_bukagbr1_Click(object sender, EventArgs e) {
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bukagbr.InitialDirectory = "";
bukagbr.Filter = "Format Bitmap (*.bmp)|*.bmp|Format JPEG(*.jpg)|*.jpg";
bukagbr.FilterIndex = 1;
bukagbr.RestoreDirectory = true;
if (DialogResult.OK == bukagbr.ShowDialog()) {
Bitmap gb = new Bitmap(bukagbr.FileName); gbr1.Image = gb;
label3.Text = perolehnama(bukagbr.FileName)+ "\n" + gb.Size.Width+ "\n" + gb.Size.Height;
} }
private void bt_bukagbr2_Click(object sender, EventArgs e) {
OpenFileDialog bukagbr = new OpenFileDialog(); bukagbr.InitialDirectory = "";
bukagbr.Filter = "Format Bitmap (*.bmp)|*.bmp|Format JPEG(*.jpg)|*.jpg";
bukagbr.FilterIndex = 1;
bukagbr.RestoreDirectory = true;
if (DialogResult.OK == bukagbr.ShowDialog()) {
Bitmap gb = new Bitmap(bukagbr.FileName); gbr2.Image = gb;
label6.Text = perolehnama(bukagbr.FileName) + "\n" + gb.Size.Width + "\n" + gb.Size.Height;
} }
private void button1_Click(object sender, EventArgs e) {
try {
Cursor.Current = Cursors.WaitCursor; Bitmap datagb1 = new Bitmap(gbr1.Image); Bitmap datagb2 = new Bitmap(gbr2.Image);
if (datagb1.Width == datagb2.Width & datagb1.Height == datagb2.Height)
{
label7.Text = mse.hitung(datagb1, datagb2).ToString();
MessageBox.Show("Compare Selesai", "Informasi",
MessageBoxButtons.OK, MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1);
} else {
MessageBox.Show("Pastikan resolusi gambar anda sama!", "Informasi", MessageBoxButtons.OK,
MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1);
} } catch {
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}
finally {
Cursor.Current = Cursors.Default; }
}
string perolehnama(string param) {
string temp; temp = "";
for (int i = param.Length-1; i >= 0; i--) {
if (param[i] != 92) {
temp = param[i] + temp; }
else {
break; }
}
return (temp); }
private void gbr2_Click(object sender, EventArgs e) {
} } }
5. Form Menggunakan Aplikasi
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;
namespace TA_091401006_alespanjaitan {
public partial class Bantuan : Form {
inputOutput io = new inputOutput(); public Bantuan()
{
InitializeComponent(); }
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private void Bantuan_Load(object sender, EventArgs e) {
CenterToScreen(); }
private void comboBox1_SelectedIndexChanged(object sender,
EventArgs e)
{
string dir = "D:/Aplikasi Tugas
Akhir/TA_091401006_alespanjaitan/TA_091401006_alespa njaitan/";
if (comboBox1.Text == "Pengamanan") {
richTextBox1.Text =
io.bacateks_dir(dir+"Bantuan/Pengamanan.ales").Text; }
if (comboBox1.Text == "Pengungkapan") {
richTextBox1.Text = io.bacateks_dir(dir + "Bantuan/Pengungkapan.ales").Text;
}
if (comboBox1.Text == "Hitung MSE") {
richTextBox1.Text = io.bacateks_dir(dir + "Bantuan/Hitung MSE.ales").Text;
} }
} }
6. Form Tentang
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 TA_091401006_alespanjaitan {
public partial class Tentang : Form {
inputOutput io = new inputOutput(); public Tentang()
{
InitializeComponent(); }
private void Tentang_Load(object sender, EventArgs e) {
(20)
}
private void comboBox1_SelectedIndexChanged(object sender,
EventArgs e)
{
string dir = "D:/Aplikasi Tugas
Akhir/TA_091401006_alespanjaitan/TA_091401006_al espanjaitan/Tentang/";
try {
if (comboBox1.Text == "Programmer") {
pictureBox1.ImageLocation = dir+"Programmer.jpg"; richTextBox1.Text = io.bacateks_dir(dir +
"Programmer.ales").Text; }
else if (comboBox1.Text == "Parents") {
pictureBox1.ImageLocation = dir + "parent.jpg"; richTextBox1.Text = io.bacateks_dir(dir +
"parent.ales").Text; }
else if (comboBox1.Text == "Family") {
pictureBox1.ImageLocation = dir+"Keluarga.jpg"; richTextBox1.Text = io.bacateks_dir(dir +
"Keluarga.ales").Text; }
else {
pictureBox1.Image = null; richTextBox1=null;
} } catch {
MessageBox.Show("Ada Kesalahan"); }
}
private void Tentang_FormClosed(object sender,
FormClosedEventArgs e)
{ } } }
7. Class ElGamal
using System;
using System.Collections.Generic; using System.Linq;
using System.Text; using System.Numerics; using System.Drawing;
(21)
{
class elgamal {
prosesBilangan bilangan = new prosesBilangan();
public Bitmap dekripsi(Bitmap gb1, BigInteger p, BigInteger
x, BigInteger a)
{
int x_asal, t, l; t = gb1.Height; l = gb1.Width; UInt16 nsuku;
BigInteger a_invers = bilangan.moduloexponensial(a, (p - 1 - x), p);
nsuku = bilangan.ceksuku(p);
Bitmap hasil = new Bitmap((l / nsuku), t); BigInteger r1, g1, b1;
for (int i = 0; i < t; i++) {
x_asal = 0;
for (int j = 0; j < hasil.Width; j++) {
r1 = g1 = b1 = 0;
for (int ii = 0; ii < nsuku; ii++) {
r1 += BigInteger.Pow(256, ii) * gb1.GetPixel(x_asal, i).R; g1 += BigInteger.Pow(256, ii) *
gb1.GetPixel(x_asal, i).G; b1 += BigInteger.Pow(256, ii) *
gb1.GetPixel(x_asal, i).B; x_asal += 1;
}
hasil.SetPixel(j, i, Color.FromArgb(255, (byte)((r1 * a_invers) % p), (byte)((g1 * a_invers) % p), (byte)((b1 * a_invers) % p))); }
}
return hasil; }
public Bitmap enkripsi(Bitmap asal, BigInteger p, BigInteger
y, BigInteger k)
{
BigInteger temp,cr,cg,cb;
Int32 x1, y1, el_r, el_g, el_b; x1 = asal.Width;
y1 = asal.Height; UInt16 nsuku;
nsuku = bilangan.ceksuku(p);
Bitmap hasil = new Bitmap((x1 * nsuku), y1); temp = bilangan.moduloexponensial(y, k, p); int x_hasil;
for (int i = 0; i < y1; i++) {
x_hasil = 0;
for (int j = 0; j < x1; j++) {
(22)
el_r = asal.GetPixel(j, i).R; el_g = asal.GetPixel(j, i).G; el_b = asal.GetPixel(j, i).B; cr = (temp * (el_r % p)) % p; cg = (temp * (el_g % p)) % p; cb = (temp * (el_b % p)) % p; for (int ii = 0; ii < nsuku; ii++) {
hasil.SetPixel(x_hasil, i,
Color.FromArgb(255, (Byte)(cr % 256),
(Byte)(cg % 256), (Byte)(cb % 256))); cr /= 256; cg /= 256; cb /= 256;
x_hasil += 1; }
} }
return hasil; }
} }
8. Class End Of File
using System;
using System.Collections.Generic; using System.Linq;
using System.Text; using System.Drawing;
using System.Windows.Forms;
namespace TA_091401006_alespanjaitan {
class endOfFile {
public int cekposisi(Bitmap gbrstego) {
string tanda = "";
for (int i = 0; i < gbrstego.Height; i++) {
tanda += Convert.ToChar(gbrstego.GetPixel(0, i).R); tanda += Convert.ToChar(gbrstego.GetPixel(0, i).G); tanda += Convert.ToChar(gbrstego.GetPixel(0, i).B); tanda += Convert.ToChar(gbrstego.GetPixel(1, i).R); tanda += Convert.ToChar(gbrstego.GetPixel(1, i).G); tanda += Convert.ToChar(gbrstego.GetPixel(1, i).B); tanda += Convert.ToChar(gbrstego.GetPixel(2, i).R); tanda += Convert.ToChar(gbrstego.GetPixel(2, i).G); if (tanda == "**ALES**")
{
return i; }
tanda = ""; }
return 0; }
(23)
{
byte r, g, b;
RichTextBox teksasli = new RichTextBox(); RichTextBox teksasli2 = new RichTextBox();
Bitmap hasil = new Bitmap(gbrstego.Width, posisi); for (int i = 0; i < posisi; i++)
{
for (int j = 0; j < hasil.Width; j++) {
r = gbrstego.GetPixel(j, i).R; g = gbrstego.GetPixel(j, i).G; b = gbrstego.GetPixel(j, i).B;
hasil.SetPixel(j, i, Color.FromArgb(255, r, g, b));
} }
return hasil; }
public RichTextBox pisahteks(Bitmap gbrstego, int posisi) {
string banding = " "; char sementar;
RichTextBox teksasli = new RichTextBox(); RichTextBox teksasli2 = new RichTextBox(); byte awl_akhr = 0;
for (int i = posisi; i < gbrstego.Height; i++) {
for (int j = 0; j < gbrstego.Width; j++) {
for (int wrn = 0; wrn < 3; wrn++) {
if (wrn == 0) {
sementar =
Convert.ToChar(gbrstego.GetPixel(j, i).R);
}
else if (wrn == 1) {
sementar =
Convert.ToChar(gbrstego.GetPixel(j, i).G);
} else {
sementar =
Convert.ToChar(gbrstego.GetPixel(j, i).B);
}
banding = tukarposisi(banding,sementar);
if (banding == "**ALES**") {
awl_akhr += 1; }
if (banding == "**ALES**" & awl_akhr == 2) {
for (int ii = 1; ii < teksasli.TextLength - 7; ii++)
{
teksasli2.Text += teksasli.Text[ii]; }
(24)
return teksasli2; }
if (awl_akhr == 1) {
teksasli.Text += sementar; }
} } }
return teksasli2; }
public Bitmap embed(Bitmap gbasli, RichTextBox teks_asli) {
RichTextBox sementara = new RichTextBox(); Int32 l, t, temp, r1, g1, b1;
l = gbasli.Width; t = gbasli.Height;
sementara.Text = "**ALES**" + teks_asli.Text + "**ALES**";
temp = sementara.TextLength / (l * 3); if (sementara.TextLength % (l * 3) != 0) temp++;
Bitmap hasil = new Bitmap(l, t + temp); for (Int32 i = 0; i < l; i++)
{
for (Int32 j = 0; j < t; j++) {
r1 = gbasli.GetPixel(i, j).R; g1 = gbasli.GetPixel(i, j).G; b1 = gbasli.GetPixel(i, j).B;
hasil.SetPixel(i, j, Color.FromArgb(255, r1, g1, b1));
} }
Int32 penanda = 0;
for (Int32 i = 0; i < temp; i++) {
for (Int32 k = 0; k < hasil.Width; k++) {
if (penanda >= sementara.TextLength) r1 = 0;
else {
r1 = sementara.Text[penanda]; penanda++;
}
if (penanda >= sementara.TextLength) g1 = 0;
else {
g1 = sementara.Text[penanda]; penanda++;
(25)
}
if (penanda >= sementara.TextLength) b1 = 0;
else {
b1 = sementara.Text[penanda]; penanda++;
}
hasil.SetPixel(k, (i+t), Color.FromArgb(255, r1, g1, b1));
if (penanda >= sementara.TextLength) {
break; }
}
if (penanda >= sementara.TextLength) {
break; }
}
return hasil; }
public bool checkgbr(Bitmap gbr) {
int x=gbr.Width, y=gbr.Height; string tanda = " "; char temp;
for (int i = 0; i <y; i++) {
for (int j = 0; j < x; j++) {
temp = Convert.ToChar(gbr.GetPixel(j,i).R); tanda = tukarposisi(tanda, temp);
if (tanda == "**ALES**") {
MessageBox.Show("Citra anda mengandung kunci");
return false; }
temp = Convert.ToChar(gbr.GetPixel(j, i).G); tanda = tukarposisi(tanda, temp);
if (tanda == "**ALES**") {
MessageBox.Show("Citra anda mengandung kunci");
return false; }
temp = Convert.ToChar(gbr.GetPixel(j, i).B); tanda = tukarposisi(tanda, temp);
if (tanda == "**ALES**") {
MessageBox.Show("Citra anda mengandung kunci");
return false; }
} }
(26)
return true; }
public bool checktext(RichTextBox teks) {
int x = teks.TextLength; string tanda = " "; char temp;
for (int j = 0; j < x; j++) {
temp = teks.Text[j];
tanda = tukarposisi(tanda, temp); if (tanda == "**ALES**")
{
MessageBox.Show("Teks yang akan di embed mengandung Kunci");
return false; }
}
MessageBox.Show("Teks anda dapat di embed"); return true;
}
public string tukarposisi(string kata, char huruf) {
string hasil="";
hasil = kata.Substring(1, kata.Length-1); hasil += huruf;
return hasil; }
}
9. Class hitungMSEClass
using System;
using System.Collections.Generic; using System.Linq;
using System.Text; using System.Drawing;
namespace TA_091401006_alespanjaitan {
class hitungMseClass {
public double hitung(Bitmap g1, Bitmap g2) {
double nilaimse = 0;
for (int i = 0; i < g1.Width; i++) {
for (int j = 0; j < g1.Height; j++) {
nilaimse += (Math.Pow(g1.GetPixel(i, j).R - g2.GetPixel(i, j).R, 2) +
Math.Pow(g1.GetPixel(i, j).G - g2.GetPixel(i, j).G, 2) + Math.Pow(g1.GetPixel(i, j).B - g2.GetPixel(i, j).B, 2)) / 3;
(27)
} }
nilaimse = nilaimse / (g1.Width * g1.Height); return nilaimse;
} } }
10. Class prosesBilangan
using System;
using System.Collections.Generic; using System.Linq;
using System.Text; using System.Numerics;
namespace TA_091401006_alespanjaitan {
class prosesBilangan {
public BigInteger acak(BigInteger a, BigInteger Zi,
BigInteger m)
{
BigInteger c =
BigInteger.Parse(DateTime.Now.Millisecond.ToString());
return ((a * Zi + c) % m); }
public UInt16 ceksuku(BigInteger n) {
UInt16 status = 1; while (n > 255) {
n = n / 256; status += 1; }
return status; }
public BigInteger FPB(BigInteger a, BigInteger b) {
BigInteger c; if (a < b) {
c = a; a = b; b = c; }
if (b <= 1) {
return b; }
c = a - b;
return FPB(b, c); }
public BigInteger moduloexponensial(BigInteger a, BigInteger
b, BigInteger c)
(28)
BigInteger hasil = 1; if (b == 1)
hasil = (a % c); else if (b == 0) hasil = (1 % c); else if (b > 1) {
hasil =
moduloexponensial(BigInteger.Pow(moduloexponensial (a, b / 2, c), 2) * moduloexponensial(a, b % 2, c), 1, c);
}
return hasil; }
public BigInteger bangkitprima(BigInteger bwh, BigInteger atas)
{
bool kondisi = true;
BigInteger hasil = 1, akar; hasil = acak(bwh, hasil, atas); while (kondisi)
{
kondisi = false;
while (moduloexponensial(2, (hasil - 1), hasil) != 1) {
hasil = acak(bwh, hasil, atas); }
akar = (BigInteger)BigInteger.Log(hasil, 2); for (BigInteger i = 2; i <= akar; i++)
{
if (hasil % i == 0) {
kondisi = true; break;
} } }
return hasil; }
} }
11. Class inputOutput
using System;
using System.Collections.Generic; using System.Linq;
using System.Text; using System.IO; using System.Drawing;
using System.Windows.Forms;
namespace TA_091401006_alespanjaitan {
class inputOutput {
(29)
{
RichTextBox hasil = new RichTextBox(); string baca = "";
StreamReader objReader = new StreamReader(namafile); baca = objReader.ReadLine();
while (baca != null) {
hasil.Text += baca + "\n"; ; baca = objReader.ReadLine(); }
return hasil; }
public Image bukagbr(string filter) {
OpenFileDialog bukagbr = new OpenFileDialog(); bukagbr.InitialDirectory = "";
bukagbr.Filter = filter; bukagbr.FilterIndex = 1;
bukagbr.RestoreDirectory = true;
if (DialogResult.OK == bukagbr.ShowDialog()) {
Image gb = new Bitmap(bukagbr.FileName); return gb;
}
return null; }
public string bukateks() {
OpenFileDialog bukatxt = new OpenFileDialog(); bukatxt.InitialDirectory = "";
bukatxt.Filter = "File Text (*.txt)|*.txt"; bukatxt.FilterIndex = 1;
bukatxt.RestoreDirectory = true;
if (DialogResult.OK == bukatxt.ShowDialog()) {
return bacateks_dir(bukatxt.FileName).Text; }
return null; }
public bool spGambar(Image gbr) {
SaveFileDialog simpan = new SaveFileDialog(); if (simpan.ShowDialog() == DialogResult.OK) {
gbr.Save(simpan.FileName + ".bmp",
System.Drawing.Imaging.ImageFormat.Bmp); return true;
}
return false; }
public bool spData(Image gbr, string bilprima, string nilx, string nilai_a)
{
SaveFileDialog simpan = new SaveFileDialog(); if (simpan.ShowDialog() == DialogResult.OK) {
FileStream teks = new FileStream(simpan.FileName + ".txt", FileMode.CreateNew, FileAccess.Write);
(30)
StreamWriter tulis = new StreamWriter(teks); tulis.WriteLine("NILAIP = " + bilprima); tulis.WriteLine("NILAIX = " + nilx); tulis.Write("NILAIA = " + nilai_a); tulis.Close();
teks.Close();
gbr.Save(simpan.FileName + ".bmp",
System.Drawing.Imaging.ImageFormat.Bmp); return true;
}
return false; }
} }
(31)
CURRICULUM VITAE
Nama
: Ales Sanro Sotardodo Panjaitan
Alamat
: Jl. Pijer Podi No.3 Sp. Pos – Medan Selayang
Alamat Wali : Desa Pardamean, Kec. Babul Makmur, Kab. Aceh Tenggara
Nomor HP
: 085260301325
Riwayat Pendidikan
1997 – 2003 : SD Negeri Pardamean – Aceh Tenggara
2003 – 2006 : SMP Negeri 2 Lawe Sigalagala – Aceh Tenggara
2006 – 2009 : SMA Negeri 1 Lawe Sigalagala – Aceh Tenggara
2009 – 2013 : S1 Ilmu Komputer Universitas Sumatera Utara – Medan
Keahlian / Kursus yang Pernah diikuti
-
Programming
: Pascal, C++, Java, PHP, Delphi, dan Visual C#.Net
-
Database
: MySQL
(1)
return true; }
public bool checktext(RichTextBox teks) {
int x = teks.TextLength; string tanda = " "; char temp;
for (int j = 0; j < x; j++) {
temp = teks.Text[j];
tanda = tukarposisi(tanda, temp); if (tanda == "**ALES**")
{
MessageBox.Show("Teks yang akan di embed mengandung Kunci");
return false; }
}
MessageBox.Show("Teks anda dapat di embed"); return true;
}
public string tukarposisi(string kata, char huruf) {
string hasil="";
hasil = kata.Substring(1, kata.Length-1); hasil += huruf;
return hasil; }
}
9. Class hitungMSEClass
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
namespace TA_091401006_alespanjaitan {
class hitungMseClass {
public double hitung(Bitmap g1, Bitmap g2) {
double nilaimse = 0;
for (int i = 0; i < g1.Width; i++) {
for (int j = 0; j < g1.Height; j++) {
nilaimse += (Math.Pow(g1.GetPixel(i, j).R - g2.GetPixel(i, j).R, 2) +
Math.Pow(g1.GetPixel(i, j).G - g2.GetPixel(i, j).G, 2) + Math.Pow(g1.GetPixel(i, j).B - g2.GetPixel(i, j).B, 2)) / 3;
(2)
} }
nilaimse = nilaimse / (g1.Width * g1.Height); return nilaimse;
} } }
10. Class prosesBilangan
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Numerics;
namespace TA_091401006_alespanjaitan {
class prosesBilangan {
public BigInteger acak(BigInteger a, BigInteger Zi, BigInteger m)
{
BigInteger c =
BigInteger.Parse(DateTime.Now.Millisecond.ToString()); return ((a * Zi + c) % m);
}
public UInt16 ceksuku(BigInteger n) {
UInt16 status = 1; while (n > 255) {
n = n / 256; status += 1; }
return status; }
public BigInteger FPB(BigInteger a, BigInteger b) {
BigInteger c; if (a < b) {
c = a; a = b; b = c; }
if (b <= 1) {
return b; }
c = a - b;
return FPB(b, c); }
public BigInteger moduloexponensial(BigInteger a, BigInteger b, BigInteger c)
(3)
BigInteger hasil = 1; if (b == 1)
hasil = (a % c); else if (b == 0) hasil = (1 % c); else if (b > 1) {
hasil =
moduloexponensial(BigInteger.Pow(moduloexponensial (a, b / 2, c), 2) * moduloexponensial(a, b % 2, c), 1, c);
}
return hasil; }
public BigInteger bangkitprima(BigInteger bwh, BigInteger atas)
{
bool kondisi = true;
BigInteger hasil = 1, akar; hasil = acak(bwh, hasil, atas); while (kondisi)
{
kondisi = false;
while (moduloexponensial(2, (hasil - 1), hasil) != 1) {
hasil = acak(bwh, hasil, atas); }
akar = (BigInteger)BigInteger.Log(hasil, 2); for (BigInteger i = 2; i <= akar; i++)
{
if (hasil % i == 0) {
kondisi = true; break;
} } }
return hasil; }
} }
11. Class inputOutput
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Drawing;
using System.Windows.Forms;
namespace TA_091401006_alespanjaitan {
class inputOutput {
(4)
{
RichTextBox hasil = new RichTextBox(); string baca = "";
StreamReader objReader = new StreamReader(namafile); baca = objReader.ReadLine();
while (baca != null) {
hasil.Text += baca + "\n"; ; baca = objReader.ReadLine(); }
return hasil; }
public Image bukagbr(string filter) {
OpenFileDialog bukagbr = new OpenFileDialog(); bukagbr.InitialDirectory = "";
bukagbr.Filter = filter; bukagbr.FilterIndex = 1;
bukagbr.RestoreDirectory = true;
if (DialogResult.OK == bukagbr.ShowDialog()) {
Image gb = new Bitmap(bukagbr.FileName); return gb;
}
return null; }
public string bukateks() {
OpenFileDialog bukatxt = new OpenFileDialog(); bukatxt.InitialDirectory = "";
bukatxt.Filter = "File Text (*.txt)|*.txt"; bukatxt.FilterIndex = 1;
bukatxt.RestoreDirectory = true;
if (DialogResult.OK == bukatxt.ShowDialog()) {
return bacateks_dir(bukatxt.FileName).Text; }
return null; }
public bool spGambar(Image gbr) {
SaveFileDialog simpan = new SaveFileDialog(); if (simpan.ShowDialog() == DialogResult.OK) {
gbr.Save(simpan.FileName + ".bmp",
System.Drawing.Imaging.ImageFormat.Bmp); return true;
}
return false; }
public bool spData(Image gbr, string bilprima, string nilx,
string nilai_a) {
SaveFileDialog simpan = new SaveFileDialog(); if (simpan.ShowDialog() == DialogResult.OK) {
FileStream teks = new FileStream(simpan.FileName + ".txt", FileMode.CreateNew, FileAccess.Write);
(5)
StreamWriter tulis = new StreamWriter(teks); tulis.WriteLine("NILAIP = " + bilprima); tulis.WriteLine("NILAIX = " + nilx); tulis.Write("NILAIA = " + nilai_a); tulis.Close();
teks.Close();
gbr.Save(simpan.FileName + ".bmp",
System.Drawing.Imaging.ImageFormat.Bmp); return true;
}
return false; }
} }
(6)