Perancangan Perangkat Lunak Pengaman File Text Menggunakan Algoritma El Gamal dan Kompresi File Tex Menggunakan Algoritma Huffman

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LISTING PROGRAM

Kode Program frmUtama.cs

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 EnkDekGUI {

public partial class frmUtama : Form {

public frmUtama() {

InitializeComponent(); }

private void kompToolStripMenuItem_Click(object sender, EventArgs e) {

frmKompresi komp = new frmKompresi(); komp.ShowDialog();

}

private void dekompresiToolStripMenuItem_Click(object sender, EventArgs e) {

frmDekompresi komp = new frmDekompresi(); komp.ShowDialog();

}

private void enkripsiToolStripMenuItem1_Click(object sender, EventArgs e) {

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enk.ShowDialog(); }

private void dekripsiToolStripMenuItem_Click(object sender, EventArgs e) {

frmDekripsi dek = new frmDekripsi(); dek.ShowDialog();

}

private void tentangToolStripMenuItem_Click(object sender, EventArgs e) {

frmTentang ttg = new frmTentang(); ttg.ShowDialog();

} } }

Kode Program frmUtama.Designer.cs

partial class frmUtama {

/// <summary>

/// Required designer variable. /// </summary>

private System.ComponentModel.IContainer components = null;

/// <summary>

/// Clean up any resources being used. /// </summary>

/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

protected override void Dispose(bool disposing) {

if (disposing && (components != null)) {

components.Dispose(); }

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}v

#region Windows Form Designer generated code

/// <summary>

/// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary>

private void InitializeComponent() {

System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(frmUtama));

this.menuStrip1 = new System.Windows.Forms.MenuStrip();

this.enkripsiToolStripMenuItem = new

System.Windows.Forms.ToolStripMenuItem();

this.enkripsiToolStripMenuItem1 = new

this.dekripsiToolStripMenuItem = new

this.kompresiToolStripMenuItem = new

this.kompToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();

this.dekompresiToolStripMenuItem = new

this.tentangToolStripMenuItem = new

this.label8 = new System.Windows.Forms.Label(); this.label7 = new System.Windows.Forms.Label(); this.label6 = new System.Windows.Forms.Label(); this.label5 = new System.Windows.Forms.Label(); this.label4 = new System.Windows.Forms.Label(); this.label1 = new System.Windows.Forms.Label();

this.pictureBox1 = new System.Windows.Forms.PictureBox(); this.menuStrip1.SuspendLayout();

((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit(); this.SuspendLayout();

//

// menuStrip1 //

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this.kompresiToolStripMenuItem, this.tentangToolStripMenuItem});

this.menuStrip1.Location = new System.Drawing.Point(0, 0); this.menuStrip1.Name = "menuStrip1";

this.menuStrip1.Size = new System.Drawing.Size(689, 24); this.menuStrip1.TabIndex = 0;

this.menuStrip1.Text = "menuStrip1"; //

// enkripsiToolStripMenuItem //

this.enkripsiToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {

this.enkripsiToolStripMenuItem1, this.dekripsiToolStripMenuItem});

this.enkripsiToolStripMenuItem.Name = "enkripsiToolStripMenuItem"; this.enkripsiToolStripMenuItem.Size = new System.Drawing.Size(75, 20); this.enkripsiToolStripMenuItem.Text = "Kriptografi";

//

// enkripsiToolStripMenuItem1 //

this.enkripsiToolStripMenuItem1.Name = "enkripsiToolStripMenuItem1"; this.enkripsiToolStripMenuItem1.Size = new System.Drawing.Size(116, 22); this.enkripsiToolStripMenuItem1.Text = "Enkripsi";

this.enkripsiToolStripMenuItem1.Click += new

System.EventHandler(this.enkripsiToolStripMenuItem1_Click); //

// dekripsiToolStripMenuItem //

this.dekripsiToolStripMenuItem.Name = "dekripsiToolStripMenuItem"; this.dekripsiToolStripMenuItem.Size = new System.Drawing.Size(116, 22); this.dekripsiToolStripMenuItem.Text = "Dekripsi";

this.dekripsiToolStripMenuItem.Click += new

System.EventHandler(this.dekripsiToolStripMenuItem_Click); //

// kompresiToolStripMenuItem //

this.kompresiToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {

this.kompToolStripMenuItem,

this.dekompresiToolStripMenuItem});

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this.kompresiToolStripMenuItem.Text = "Kompresi"; //

// kompToolStripMenuItem //

this.kompToolStripMenuItem.Name = "kompToolStripMenuItem";

this.kompToolStripMenuItem.Size = new System.Drawing.Size(137, 22); this.kompToolStripMenuItem.Text = "Kompresi";

this.kompToolStripMenuItem.Click += new

System.EventHandler(this.kompToolStripMenuItem_Click); //

// dekompresiToolStripMenuItem //

this.dekompresiToolStripMenuItem.Name = "dekompresiToolStripMenuItem"; this.dekompresiToolStripMenuItem.Size = new System.Drawing.Size(137, 22); this.dekompresiToolStripMenuItem.Text = "Dekompresi";

this.dekompresiToolStripMenuItem.Click += new

System.EventHandler(this.dekompresiToolStripMenuItem_Click); //

// tentangToolStripMenuItem //

this.tentangToolStripMenuItem.Name = "tentangToolStripMenuItem"; this.tentangToolStripMenuItem.Size = new System.Drawing.Size(63, 20); this.tentangToolStripMenuItem.Text = "Tentang";

this.tentangToolStripMenuItem.Click += new

System.EventHandler(this.tentangToolStripMenuItem_Click); //

// label8 //

this.label8.Font = new System.Drawing.Font("Arial", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

this.label8.Location = new System.Drawing.Point(79, 379); this.label8.Name = "label8";

this.label8.Size = new System.Drawing.Size(530, 22); this.label8.TabIndex = 22;

this.label8.Text = "2015";

this.label8.TextAlign = System.Drawing.ContentAlignment.TopCenter; //

// label7 //

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this.label7.Name = "label7";

this.label7.Text = "MEDAN";

// label6 //

this.label6.Text = "UNIVERSITAS SUMATERA UTARA";

// label5 //

this.label5.Text = "FAKULTAS ILMU KOMPUTER DAN TEKNOLOGI INFORMASI"; this.label5.TextAlign = System.Drawing.ContentAlignment.TopCenter; //

// label4 //

this.label4.Text = "PROGRAM STUDI EKSTENSI S1 ILMU KOMPUTER"; this.label4.TextAlign = System.Drawing.ContentAlignment.TopCenter; //

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this.label1.Text = "PERANCANGAN PERANGKAT LUNAK PENGAMANAN FILE TEXT MENGGUNAKAN ALGORITMA EL GAMAL D" +

"AN KOMPRESI FILE TEXT MENGGUNAKAN ALGORITMA HUFFMAN\r\n"; this.label1.TextAlign = System.Drawing.ContentAlignment.TopCenter; //

// pictureBox1 //

this.pictureBox1.Image =

((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));

this.pictureBox1.Location = new System.Drawing.Point(263, 116); this.pictureBox1.Name = "pictureBox1";

this.pictureBox1.Size = new System.Drawing.Size(163, 163);

this.pictureBox1.SizeMode =

System.Windows.Forms.PictureBoxSizeMode.StretchImage; this.pictureBox1.TabIndex = 16;

this.pictureBox1.TabStop = false; //

// frmUtama //

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.BackColor = System.Drawing.SystemColors.Control;

this.ClientSize = new System.Drawing.Size(689, 409); this.Controls.Add(this.label8);

this.Controls.Add(this.label7); this.Controls.Add(this.label6); this.Controls.Add(this.label5); this.Controls.Add(this.label4); this.Controls.Add(this.label1); this.Controls.Add(this.pictureBox1); this.Controls.Add(this.menuStrip1);

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.MainMenuStrip = this.menuStrip1;

this.MaximizeBox = false; this.Name = "frmUtama";

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this.Text = "Enkripsi Menggunakan El Gamal dan Kompresi Menggunakan Huffman";

this.Load += new System.EventHandler(this.frmUtama_Load); this.menuStrip1.ResumeLayout(false);

this.menuStrip1.PerformLayout();

((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit(); this.ResumeLayout(false);

this.PerformLayout();

}

#endregion

private System.Windows.Forms.MenuStrip menuStrip1;

private System.Windows.Forms.ToolStripMenuItem enkripsiToolStripMenuItem; private System.Windows.Forms.ToolStripMenuItem kompresiToolStripMenuItem; private System.Windows.Forms.ToolStripMenuItem enkripsiToolStripMenuItem1; private System.Windows.Forms.ToolStripMenuItem dekripsiToolStripMenuItem; private System.Windows.Forms.ToolStripMenuItem kompToolStripMenuItem; private System.Windows.Forms.ToolStripMenuItem dekompresiToolStripMenuItem; private System.Windows.Forms.ToolStripMenuItem tentangToolStripMenuItem; private System.Windows.Forms.Label label8;

private System.Windows.Forms.Label label7; private System.Windows.Forms.Label label6; private System.Windows.Forms.Label label5; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label1;

private System.Windows.Forms.PictureBox pictureBox1; }

}

Kode Program frmEnkripsi.cs

using System;

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using System.Windows.Forms;

using Microsoft.Office.Interop.Word; using System.IO;

using System.Numerics; using System.Diagnostics; using Microsoft.VisualBasic;

using Microsoft.VisualBasic.CompilerServices;

public partial class frmEnkripsi : Form {

//bilangan

public frmEnkripsi() {

stirng InitializeComponent(a); }

List<string> listk = new List<string>();

//fungsi tombol browse file

private void btnBrowseInput_Click(object sender, EventArgs e) {

//deklarasi variabel result: dialog = dialog buka file DialogResult result = openFileDialog1.ShowDialog(); //jika result = OK

if (result == DialogResult.OK) {

//textbox txtfile = namafile

txtFile.Text = openFileDialog1.FileName; //kosongkan textbox txtread

txtRead.Text = "";

//deklarasi formatfile:string = ekstensi dari namafile

string formatfile = Path.GetExtension(@txtFile.Text).Replace(".","");

//jika txt

if (txtFile.Text != ""){

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if (formatfile == "txt") { listk.Add("1");

}else if (formatfile == "docx") { listk.Add("2");

}else if(formatfile == "doc") { listk.Add("3");

}

using (FileStream fsInput = new FileStream(@txtFile.Text, FileMode.Open))

{

int data2;

while ((data2 = fsInput.ReadByte()) != -1) {

txtRead.AppendText(data2.ToString()); if (data2 == 0) {

data2 = 256; }

listk.Add(data2.ToString());

} } }

//jika tidak ada

else //textbox txtread dikosongkan txtRead.Text = "";

//label lblpanjanginput = panjang karakter dari textbox read lblPanjangInput.Text = txtRead.Text.Length.ToString(); }

}

//fungsi tombol simpan hasil enkripsi

private void button2_Click(object sender, EventArgs e) {

//coba lakukan try

{

//deklarasi variabel result: dialog = dialog simpan file DialogResult result = saveFileDialog1.ShowDialog(); //jika result = OK

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{

//simpan textbox hasil menjadi filename

File.WriteAllText(@saveFileDialog1.FileName, txtHasil.Text); //tampilkan pesan berhasil

MessageBox.Show("File berhasil disimpan!"); }

}

//jika terdapat error catch (Exception err) {

//tampilkan pesan error

MessageBox.Show(err.Message.ToString(), "Error"); }

}

//fungsi tombol reset form

//kembalikan textbox ke nilai awal txtGGamal.Text = "0";

txtPGamal.Text = "0"; txtYGamal.Text = "0"; txtXGamal.Text = "0"; txtFile.Text = ""; txtHasil.Text = ""; txtRead.Text = ""; }

private void btnHitKunciGamal_Click(object sender, EventArgs e) {

if (txtPGamal.Text == "" || txtGGamal.Text == "" || txtXGamal.Text == "") {

MessageBox.Show("g/X/P harus diisi!"); }

else {

if (int.Parse(txtPGamal.Text) > 0 && int.Parse(txtGGamal.Text) > 0 && int.Parse(txtXGamal.Text) > 0)

{

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if (int.Parse(txtGGamal.Text) >= int.Parse(txtPGamal.Text)) {

MessageBox.Show("nilai G harus lebih kecil dari P!"); }

else {

if (int.Parse(txtXGamal.Text) >= int.Parse(txtPGamal.Text))

{

MessageBox.Show("nilai X harus lebih kecil dari P!"); }

else {

//deklarasi variabel p : BigInteger = textbox txtP dikonversi ke BigInteger

BigInteger pGamal = BigInteger.Parse(txtPGamal.Text);

//cek apakah p bilangan prima atau tidak if (!Utility.IsPrime(pGamal))

{

//jika tidak, tampilkan pesan

MessageBox.Show("p bukan bilangan prima!");

} else {

BigInteger gGamal =

BigInteger.Parse(txtGGamal.Text);

BigInteger xGamal =

BigInteger.Parse(txtXGamal.Text);

BigInteger YGamal = BigInteger.ModPow(gGamal, xGamal, pGamal);

txtYGamal.Text = YGamal.ToString(); }

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MessageBox.Show("P harus lebih dari 256!"); }

} else {

MessageBox.Show("g/X/P harus lebih dari 0!"); }

} }

private void btnEnkGamal_Click(object sender, EventArgs e) {

if (txtYGamal.Text != "") {

BigInteger gGamal = BigInteger.Parse(txtGGamal.Text); BigInteger xGamal = BigInteger.Parse(txtXGamal.Text); BigInteger YGamal = BigInteger.Parse(txtYGamal.Text); BigInteger pGamal = BigInteger.Parse(txtPGamal.Text); BigInteger kGamal, ghitGamal, yhitGamal;

//Deklarasi variabel str:string = txtRead

int pCount, k_int, j,f,g;

pCount = pGamal.ToString().Length;

string gstr, ystr, temp1, temp2, temp3 = ""; Stopwatch sw = Stopwatch.StartNew();

string[] arrayb = listk.ToArray();

//Deklarasi variabel hit: array BigInteger = konversi array finalValue dari string menjadi BigInteger

BigInteger[] hit = Array.ConvertAll(arrayb, BigInteger.Parse);

temp1 = ""; temp2 = ""; temp3 = "";

for (j = 0; j < arrayb.Length; j++) {

kGamal = Utility.RandomIntegerBelow(pGamal);

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yhitGamal = BigInteger.Multiply(BigInteger.Pow(YGamal, k_int), hit[j]) % pGamal;

gstr = ghitGamal.ToString(); ystr = yhitGamal.ToString();

while (gstr.Length < pCount) {

temp1 = "0" + gstr; gstr = temp1; }

while (ystr.Length < pCount) {

temp2 = "0" + ystr; ystr = temp2; }

temp3 = temp3 + gstr + ystr; temp1 = "";

temp2 = ""; }

//tampilkan string hasenk ke textbox txtHasil txtHasil.Text = temp3;

lblPanjangKar.Text = txtHasil.Text.Length.ToString(); //sw stop

sw.Stop();

//mengambil waktu dalam satuan ms kemudian tampilkan ke textbox lblwaktu

lblWaktu.Text = sw.Elapsed.Milliseconds.ToString() + " ms";

} else {

MessageBox.Show("Klik tombol hitung terlebih dahulu."); }

}

private void txtRead_TextChanged(object sender, EventArgs e) {

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string[] arrayb = listk.ToArray();

txtHasil.Text = String.Join("", arrayb); MessageBox.Show("Selesai");

}

private void txtGGamal_TextChanged(object sender, EventArgs e) {

}

private void txtXGamal_TextChanged(object sender, EventArgs e) {

}

} }

Kode Program frmEnkripsi.Designer.cs

partial class frmEnkripsi {

/// <summary>

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/// <summary>

base.Dispose(disposing); }

/// <summary>

this.button3 = new System.Windows.Forms.Button(); this.groupBox2 = new System.Windows.Forms.GroupBox(); this.lblPanjangInput = new System.Windows.Forms.Label(); this.label7 = new System.Windows.Forms.Label();

this.label1 = new System.Windows.Forms.Label(); this.txtFile = new System.Windows.Forms.TextBox(); this.btnBrowseInput = new System.Windows.Forms.Button(); this.label3 = new System.Windows.Forms.Label();

this.txtRead = new System.Windows.Forms.TextBox(); this.button2 = new System.Windows.Forms.Button(); this.label4 = new System.Windows.Forms.Label(); this.txtHasil = new System.Windows.Forms.TextBox();

this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog(); this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog(); this.lblWaktu = new System.Windows.Forms.Label();

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this.groupBox3 = new System.Windows.Forms.GroupBox(); this.label10 = new System.Windows.Forms.Label(); this.txtYGamal = new System.Windows.Forms.TextBox(); this.btnHitKunciGamal = new System.Windows.Forms.Button(); this.label9 = new System.Windows.Forms.Label();

this.txtPGamal = new System.Windows.Forms.TextBox(); this.label5 = new System.Windows.Forms.Label(); this.label8 = new System.Windows.Forms.Label(); this.txtXGamal = new System.Windows.Forms.TextBox(); this.txtGGamal = new System.Windows.Forms.TextBox(); this.btnEnkGamal = new System.Windows.Forms.Button(); this.groupBox2.SuspendLayout();

this.groupBox3.SuspendLayout(); this.SuspendLayout();

//

// button3 //

this.button3.Location = new System.Drawing.Point(516, 308); this.button3.Name = "button3";

this.button3.Size = new System.Drawing.Size(94, 26); this.button3.TabIndex = 167;

this.button3.Text = "Reset";

this.button3.UseVisualStyleBackColor = true;

this.button3.Click += new System.EventHandler(this.button3_Click); //

// groupBox2 //

this.groupBox2.Controls.Add(this.lblPanjangInput); this.groupBox2.Controls.Add(this.label7);

this.groupBox2.Controls.Add(this.label1); this.groupBox2.Controls.Add(this.txtFile);

this.groupBox2.Controls.Add(this.btnBrowseInput); this.groupBox2.Controls.Add(this.label3);

this.groupBox2.Controls.Add(this.txtRead);

this.groupBox2.Location = new System.Drawing.Point(12, 12); this.groupBox2.Name = "groupBox2";

this.groupBox2.Size = new System.Drawing.Size(385, 226); this.groupBox2.TabIndex = 166;

this.groupBox2.TabStop = false; this.groupBox2.Text = "Input"; //

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//

this.lblPanjangInput.AutoSize = true;

this.lblPanjangInput.Location = new System.Drawing.Point(70, 199); this.lblPanjangInput.Name = "lblPanjangInput";

this.lblPanjangInput.Size = new System.Drawing.Size(13, 13); this.lblPanjangInput.TabIndex = 172;

this.lblPanjangInput.Text = "0"; //

// label7 //

this.label7.AutoSize = true;

this.label7.Text = "Panjang :"; //

// label1 //

this.label1.Text = "File Teks :"; //

// txtFile //

this.txtFile.Location = new System.Drawing.Point(73, 19); this.txtFile.Name = "txtFile";

this.txtFile.Size = new System.Drawing.Size(199, 20); this.txtFile.TabIndex = 13;

//

// btnBrowseInput //

this.btnBrowseInput.Location = new System.Drawing.Point(278, 17); this.btnBrowseInput.Name = "btnBrowseInput";

this.btnBrowseInput.Size = new System.Drawing.Size(94, 26); this.btnBrowseInput.TabIndex = 14;

this.btnBrowseInput.Text = "Browse";

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this.btnBrowseInput.Click += new System.EventHandler(this.btnBrowseInput_Click);

// // label3 //

this.label3.Text = "Isi File :"; //

// txtRead //

this.txtRead.Location = new System.Drawing.Point(73, 49); this.txtRead.Multiline = true;

this.txtRead.Name = "txtRead";

this.txtRead.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.txtRead.Size = new System.Drawing.Size(299, 145);

this.txtRead.TabIndex = 15;

this.txtRead.TextChanged += new

System.EventHandler(this.txtRead_TextChanged); //

// button2 //

this.button2.Text = "Simpan";

// label4 //

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// txtHasil //

this.txtHasil.Location = new System.Drawing.Point(56, 244); this.txtHasil.Multiline = true;

this.txtHasil.Name = "txtHasil";

this.txtHasil.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.txtHasil.Size = new System.Drawing.Size(454, 74);

this.txtHasil.TabIndex = 162; //

// openFileDialog1 //

this.openFileDialog1.Filter = "All Files |*.txt;*.doc;*.docx"; //

// saveFileDialog1 //

this.saveFileDialog1.DefaultExt = "elgmc"; this.saveFileDialog1.FileName = "hasil";

this.saveFileDialog1.Filter = "File Enkripsi El Gamal|*.elgmc"; //

// lblWaktu //

this.lblWaktu.AutoSize = true;

this.lblWaktu.Location = new System.Drawing.Point(336, 321); this.lblWaktu.Name = "lblWaktu";

this.lblWaktu.Size = new System.Drawing.Size(29, 13); this.lblWaktu.TabIndex = 171;

this.lblWaktu.Text = "0 ms"; //

// lblPanjangKar //

this.lblPanjangKar.AutoSize = true;

this.lblPanjangKar.Location = new System.Drawing.Point(473, 321); this.lblPanjangKar.Name = "lblPanjangKar";

this.lblPanjangKar.Size = new System.Drawing.Size(13, 13); this.lblPanjangKar.TabIndex = 170;

this.lblPanjangKar.Text = "0"; //

// label18 //

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this.label18.Text = "Waktu Eksekusi :"; //

// label17 //

this.label17.Text = "Panjang Karakter :"; //

// groupBox3 //

this.groupBox3.Controls.Add(this.label10); this.groupBox3.Controls.Add(this.txtYGamal);

this.groupBox3.Controls.Add(this.btnHitKunciGamal); this.groupBox3.Controls.Add(this.label9);

this.groupBox3.Controls.Add(this.txtPGamal); this.groupBox3.Controls.Add(this.label5); this.groupBox3.Controls.Add(this.label8); this.groupBox3.Controls.Add(this.txtXGamal); this.groupBox3.Controls.Add(this.txtGGamal);

this.groupBox3.TabStop = false;

this.groupBox3.Text = "Pembangkit Kunci"; //

// label10 //

this.label10.Text = "Y"; //

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this.txtYGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtYGamal.Location = new System.Drawing.Point(44, 133);

this.txtYGamal.Name = "txtYGamal";

this.txtYGamal.Size = new System.Drawing.Size(142, 20); this.txtYGamal.TabIndex = 209;

this.txtYGamal.Text = "0"; //

// btnHitKunciGamal //

this.btnHitKunciGamal.Location = new System.Drawing.Point(92, 99); this.btnHitKunciGamal.Name = "btnHitKunciGamal";

this.btnHitKunciGamal.Size = new System.Drawing.Size(94, 26); this.btnHitKunciGamal.TabIndex = 208;

this.btnHitKunciGamal.Text = "Hitung";

this.btnHitKunciGamal.UseVisualStyleBackColor = true;

this.btnHitKunciGamal.Click += new

System.EventHandler(this.btnHitKunciGamal_Click); //

// label9 //

this.label9.Text = "P"; //

// txtPGamal //

this.txtPGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtPGamal.Location = new System.Drawing.Point(44, 72);

this.txtPGamal.Name = "txtPGamal";

this.txtPGamal.Size = new System.Drawing.Size(142, 20); this.txtPGamal.TabIndex = 206;

this.txtPGamal.Text = "0"; //

// label5 //

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this.label5.TabIndex = 205; this.label5.Text = "X"; //

// label8 //

this.label8.Text = "g"; //

// txtXGamal //

this.txtXGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtXGamal.Location = new System.Drawing.Point(44, 46);

this.txtXGamal.Name = "txtXGamal";

this.txtXGamal.Size = new System.Drawing.Size(142, 20); this.txtXGamal.TabIndex = 203;

this.txtXGamal.Text = "0";

this.txtXGamal.TextChanged += new

System.EventHandler(this.txtXGamal_TextChanged); //

// txtGGamal //

this.txtGGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtGGamal.Location = new System.Drawing.Point(44, 20);

this.txtGGamal.Name = "txtGGamal";

this.txtGGamal.Size = new System.Drawing.Size(142, 20); this.txtGGamal.TabIndex = 202;

this.txtGGamal.Text = "0";

this.txtGGamal.TextChanged += new

System.EventHandler(this.txtGGamal_TextChanged); //

// btnEnkGamal //

this.btnEnkGamal.Location = new System.Drawing.Point(516, 244); this.btnEnkGamal.Name = "btnEnkGamal";

this.btnEnkGamal.Size = new System.Drawing.Size(94, 26); this.btnEnkGamal.TabIndex = 173;

this.btnEnkGamal.Text = "Enkripsi";

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this.btnEnkGamal.Click += new System.EventHandler(this.btnEnkGamal_Click); //

// frmEnkripsi //

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(620, 360);

this.Controls.Add(this.btnEnkGamal); this.Controls.Add(this.groupBox3); this.Controls.Add(this.lblWaktu); this.Controls.Add(this.lblPanjangKar); this.Controls.Add(this.label18); this.Controls.Add(this.label17); this.Controls.Add(this.button3); this.Controls.Add(this.groupBox2); this.Controls.Add(this.button2); this.Controls.Add(this.label4); this.Controls.Add(this.txtHasil);

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.MaximizeBox = false;

this.Name = "frmEnkripsi"; this.ShowInTaskbar = false;

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent; this.Text = "Enkripsi ELGMAL";

this.groupBox2.ResumeLayout(false); this.groupBox2.PerformLayout(); this.groupBox3.ResumeLayout(false); this.groupBox3.PerformLayout(); this.ResumeLayout(false); this.PerformLayout();

}

#endregion

private System.Windows.Forms.Button button3; private System.Windows.Forms.GroupBox groupBox2; private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox txtFile; private System.Windows.Forms.Button btnBrowseInput; private System.Windows.Forms.Label label3;

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private System.Windows.Forms.Button button2; private System.Windows.Forms.Label label4; private System.Windows.Forms.TextBox txtHasil;

private System.Windows.Forms.OpenFileDialog openFileDialog1; private System.Windows.Forms.SaveFileDialog saveFileDialog1; private System.Windows.Forms.Label lblWaktu;

private System.Windows.Forms.Label lblPanjangKar; private System.Windows.Forms.Label label18; private System.Windows.Forms.Label label17;

private System.Windows.Forms.Label lblPanjangInput; private System.Windows.Forms.Label label7;

private System.Windows.Forms.GroupBox groupBox3; private System.Windows.Forms.Label label10; private System.Windows.Forms.TextBox txtYGamal; private System.Windows.Forms.Button btnHitKunciGamal; private System.Windows.Forms.Label label9;

private System.Windows.Forms.TextBox txtPGamal; private System.Windows.Forms.Label label5; private System.Windows.Forms.Label label8; private System.Windows.Forms.TextBox txtXGamal; private System.Windows.Forms.TextBox txtGGamal; private System.Windows.Forms.Button btnEnkGamal; }

}

Kode Program frmDekripsi.cs

using System;

using System.Windows.Forms; using System.IO;

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using System.Diagnostics;

public partial class frmDekripsi : Form {

public frmDekripsi() {

string exte = "";

List<byte> listk = new List<byte>();

//fungsi tombol browse file

private void btnBrowseInput_Click(object sender, EventArgs e) {

//deklarasi variabel result: dialog = dialog buka file DialogResult result = openFileDialog1.ShowDialog(); //jika result = OK

//textbox txtfile = namafile

txtFile.Text = openFileDialog1.FileName; //kosongkan textbox txtread

txtRead.Text = "";

//textbox txtread diisi text dari txtFile

txtRead.AppendText(File.ReadAllText(@txtFile.Text)); lblPanjangInput.Text = txtRead.Text.Length.ToString(); }

}

//fungsi tombol reset form

//kembalikan textbox ke nilai awal txtPGamal.Text = "0";

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}

//fungsi tombol simpan hasil dekripsi

//coba lakukan try

{

if (exte == "txt") {

saveFileDialog1.Filter = "File Teks |*.txt"; }else if(exte == "docx"){

saveFileDialog1.Filter = "File Docx|*.docx"; }

else if (exte == "doc") {

saveFileDialog1.Filter = "File Doc|*.doc"; }

//deklarasi variabel result: dialog = dialog simpan file DialogResult result = saveFileDialog1.ShowDialog(); //jika result = OK

//simpan textbox hasil menjadi filename tipe txt

byte[] arrayb = listk.ToArray();

using (FileStream fsOutput = new

FileStream(@saveFileDialog1.FileName, FileMode.Create)) {

int j = 0;

while (j < arrayb.Length) {

fsOutput.WriteByte((byte)arrayb[j]); j++;

} }

//tampilkan pesan berhasil

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}

//jika terdapat error catch (Exception err) {

//tampilkan pesan error

MessageBox.Show(err.Message.ToString(), "Error"); }

}

//===========================================fungsi dekripsi RSA===============================================

//deklarasi variabel sw : stopwatch -> menghitung waktu proses Stopwatch sw = Stopwatch.StartNew();

BigInteger xGamal = BigInteger.Parse(txtXGamal.Text); BigInteger pGamal = BigInteger.Parse(txtPGamal.Text); BigInteger aGamal, bGamal,fGamal;

int x_int, p_int, pCount,j,p1x; x_int = int.Parse(xGamal.ToString()); p_int = int.Parse(pGamal.ToString()); pCount = pGamal.ToString().Length; string str = txtRead.Text;

string temps = "";

aGamal = BigInteger.Parse(str.Substring(0, pCount)); bGamal = BigInteger.Parse(str.Substring(pCount, pCount)); p1x = p_int - 1 - x_int;

fGamal = BigInteger.Multiply(BigInteger.Pow(aGamal, p1x) % p_int, bGamal) % p_int;

exte = fGamal.ToString(); if (exte == "1")

{

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else if (exte == "2") {

exte = "docx"; }

else if (exte == "3") {

exte = "doc"; }

j = (pCount * 2); while ( j < str.Length) {

aGamal = BigInteger.Parse(str.Substring(j, pCount));

bGamal = BigInteger.Parse(str.Substring(j + (int)(pCount), pCount)); p1x = p_int - 1 - x_int;

fGamal = BigInteger.Multiply(BigInteger.Pow(aGamal, p1x) % p_int, bGamal) % p_int;

if (fGamal == 256) { fGamal = 0; }

listk.Add((byte)fGamal);

temps = temps + int.Parse(fGamal.ToString()); j = j + (pCount * 2);

}

//tampilkan textbox dari ps txtHasil.Text = temps; //sw stop

sw.Stop();

//mengambil waktu dalam satuan ms kemudian tampilkan ke textbox lblwaktu

lblWaktu.Text = sw.Elapsed.Milliseconds.ToString() + " ms";

//tampilkan ke textbox lblPanjangKar = panjang karakter dari txtHasil (dekripsi)

lblPanjangKar.Text = txtHasil.Text.Length.ToString(); }

private void txtRead_TextChanged(object sender, EventArgs e) {

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MessageBox.Show(txtRead.Text.Substring(1, 4)); }

private void frmDekripsi_Load(object sender, EventArgs e) {

}

//=========================================== end of fungsi dekripsi RSA===============================================

} }

Kode Program frmDekripsi.Designer.cs

partial class frmDekripsi {

/// <summary>

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/// <summary>

this.button3 = new System.Windows.Forms.Button(); this.groupBox2 = new System.Windows.Forms.GroupBox(); this.lblPanjangInput = new System.Windows.Forms.Label(); this.label7 = new System.Windows.Forms.Label();

this.label1 = new System.Windows.Forms.Label(); this.txtFile = new System.Windows.Forms.TextBox(); this.btnBrowseInput = new System.Windows.Forms.Button(); this.label3 = new System.Windows.Forms.Label();

this.txtRead = new System.Windows.Forms.TextBox(); this.button2 = new System.Windows.Forms.Button(); this.label4 = new System.Windows.Forms.Label(); this.txtHasil = new System.Windows.Forms.TextBox(); this.button1 = new System.Windows.Forms.Button();

this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog(); this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog(); this.lblWaktu = new System.Windows.Forms.Label();

this.lblPanjangKar = new System.Windows.Forms.Label(); this.label18 = new System.Windows.Forms.Label(); this.label17 = new System.Windows.Forms.Label(); this.groupBox3 = new System.Windows.Forms.GroupBox(); this.label9 = new System.Windows.Forms.Label(); this.txtPGamal = new System.Windows.Forms.TextBox(); this.label5 = new System.Windows.Forms.Label(); this.txtXGamal = new System.Windows.Forms.TextBox(); this.groupBox2.SuspendLayout();

this.groupBox3.SuspendLayout(); this.SuspendLayout();

//

// button3 //

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this.button3.Text = "Reset";

// groupBox2 //

this.groupBox2.Controls.Add(this.lblPanjangInput); this.groupBox2.Controls.Add(this.label7);

this.groupBox2.Controls.Add(this.label1); this.groupBox2.Controls.Add(this.txtFile);

this.groupBox2.Controls.Add(this.btnBrowseInput); this.groupBox2.Controls.Add(this.label3);

this.groupBox2.Controls.Add(this.txtRead);

this.groupBox2.TabStop = false; this.groupBox2.Text = "Input"; //

// lblPanjangInput //

this.lblPanjangInput.AutoSize = true;

this.lblPanjangInput.Location = new System.Drawing.Point(70, 200); this.lblPanjangInput.Name = "lblPanjangInput";

this.lblPanjangInput.Size = new System.Drawing.Size(13, 13); this.lblPanjangInput.TabIndex = 174;

this.lblPanjangInput.Text = "0"; //

// label7 //

this.label7.Text = "Panjang :"; //

// label1 //

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this.label1.Name = "label1";

this.label1.Text = "File Enkripsi :"; //

// txtFile //

this.txtFile.Location = new System.Drawing.Point(73, 19); this.txtFile.Name = "txtFile";

this.txtFile.Size = new System.Drawing.Size(199, 20); this.txtFile.TabIndex = 13;

//

// btnBrowseInput //

this.btnBrowseInput.Location = new System.Drawing.Point(278, 17); this.btnBrowseInput.Name = "btnBrowseInput";

this.btnBrowseInput.Size = new System.Drawing.Size(94, 26); this.btnBrowseInput.TabIndex = 14;

this.btnBrowseInput.Text = "Browse";

this.btnBrowseInput.UseVisualStyleBackColor = true;

this.btnBrowseInput.Click += new

System.EventHandler(this.btnBrowseInput_Click); //

// label3 //

this.label3.Text = "Isi File :"; //

// txtRead //

this.txtRead.Location = new System.Drawing.Point(73, 49); this.txtRead.Multiline = true;

this.txtRead.Name = "txtRead";

this.txtRead.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.txtRead.Size = new System.Drawing.Size(299, 139);

this.txtRead.TabIndex = 15;

this.txtRead.TextChanged += new

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//

// button2 //

this.button2.Text = "Simpan";

// label4 //

this.label4.Text = "Hasil :"; //

// txtHasil //

this.txtHasil.Location = new System.Drawing.Point(56, 244); this.txtHasil.Multiline = true;

this.txtHasil.Name = "txtHasil";

this.txtHasil.ScrollBars = System.Windows.Forms.ScrollBars.Vertical; this.txtHasil.Size = new System.Drawing.Size(454, 75);

this.txtHasil.TabIndex = 169; //

// button1 //

this.button1.Text = "Dekripsi";

// openFileDialog1 //

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this.openFileDialog1.Filter = "File Enkripsi El Gamal |*.elgmc"; //

// lblWaktu //

this.lblWaktu.Size = new System.Drawing.Size(29, 13); this.lblWaktu.TabIndex = 177;

// lblPanjangKar //

this.lblPanjangKar.AutoSize = true;

this.lblPanjangKar.Location = new System.Drawing.Point(468, 321); this.lblPanjangKar.Name = "lblPanjangKar";

this.lblPanjangKar.Size = new System.Drawing.Size(13, 13); this.lblPanjangKar.TabIndex = 176;

this.lblPanjangKar.Text = "0"; //

// label18 //

// label17 //

this.label17.Text = "Panjang Karakter :"; //

// groupBox3 //

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this.groupBox3.Controls.Add(this.label5); this.groupBox3.Controls.Add(this.txtXGamal);

this.groupBox3.TabStop = false;

this.groupBox3.Text = "Pembangkit Kunci"; //

// label9 //

this.label9.Text = "P"; //

// txtPGamal //

this.txtPGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtPGamal.Location = new System.Drawing.Point(46, 45);

this.txtPGamal.Name = "txtPGamal";

this.txtPGamal.Size = new System.Drawing.Size(142, 20); this.txtPGamal.TabIndex = 206;

this.txtPGamal.Text = "0"; //

// label5 //

this.label5.Text = "X"; //

// txtXGamal //

this.txtXGamal.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.txtXGamal.Location = new System.Drawing.Point(46, 19);

this.txtXGamal.Name = "txtXGamal";

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this.txtXGamal.TabIndex = 203; this.txtXGamal.Text = "0"; //

// frmDekripsi //

this.Controls.Add(this.groupBox3); this.Controls.Add(this.lblWaktu); this.Controls.Add(this.lblPanjangKar); this.Controls.Add(this.label18); this.Controls.Add(this.label17); this.Controls.Add(this.button3); this.Controls.Add(this.groupBox2); this.Controls.Add(this.button2); this.Controls.Add(this.label4); this.Controls.Add(this.txtHasil); this.Controls.Add(this.button1);

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; this.MaximizeBox = false;

this.Name = "frmDekripsi"; this.ShowInTaskbar = false;

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent; this.Text = "Dekripsi ELGAMAL";

this.Load += new System.EventHandler(this.frmDekripsi_Load); this.groupBox2.ResumeLayout(false);

this.groupBox2.PerformLayout(); this.groupBox3.ResumeLayout(false); this.groupBox3.PerformLayout(); this.ResumeLayout(false); this.PerformLayout();

}

#endregion

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private System.Windows.Forms.Label label3; private System.Windows.Forms.TextBox txtRead; private System.Windows.Forms.Button button2; private System.Windows.Forms.Label label4; private System.Windows.Forms.TextBox txtHasil; private System.Windows.Forms.Button button1;

private System.Windows.Forms.OpenFileDialog openFileDialog1; private System.Windows.Forms.SaveFileDialog saveFileDialog1; private System.Windows.Forms.Label lblWaktu;

private System.Windows.Forms.Label lblPanjangKar; private System.Windows.Forms.Label label18; private System.Windows.Forms.Label label17; private System.Windows.Forms.GroupBox groupBox3; private System.Windows.Forms.Label label9; private System.Windows.Forms.TextBox txtPGamal; private System.Windows.Forms.Label label5; private System.Windows.Forms.TextBox txtXGamal; private System.Windows.Forms.Label lblPanjangInput; private System.Windows.Forms.Label label7;

} }

Kode Program frmKompresi.cs

using System;

using System.Windows.Forms; using System.IO;

using System.Collections; using System.Diagnostics;

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public partial class frmKompresi : Form {

public frmKompresi() {

this.OpenFD.FileName = "";

this.OpenFD.Filter = "File Enkripsi El Gamal|*.elgmc"; this.OpenFD.Title = "Buka File Enkripsi El Gamal"; bool flag = this.OpenFD.ShowDialog() == DialogResult.OK; if (flag)

{

textBox1.Text = this.OpenFD.FileName; }

}

if (textBox1.Text.Length > 0) {

string sumber = "";

string filename = textBox1.Text;

string newfilename = filename.Replace(".elgmc", ".hmc");

if (File.Exists(Path.GetTempPath().ToString() + Path.GetFileName(filename).ToString()))

{

File.Delete(Path.GetTempPath().ToString() + Path.GetFileName(filename).ToString());

}

File.Copy(this.OpenFD.FileName, Path.GetTempPath().ToString() + Path.GetFileName(filename).ToString());

StreamReader streamReader = new StreamReader(filename); sumber = streamReader.ReadToEnd();

streamReader.Close();

Stopwatch sw = Stopwatch.StartNew();

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huffmanTree.Build(sumber);

BitArray bit_array = huffmanTree.Encode(sumber);

byte[] bytes = new byte[bit_array.Length / 8 + (bit_array.Length % 8 == 0 ? 0 : 1)];

bit_array.CopyTo(bytes, 0);

File.WriteAllBytes(newfilename, bytes);

sw.Stop();

lblWaktu.Text = sw.Elapsed.Milliseconds.ToString() + " ms"; MessageBox.Show("Kompresi selesai!\n" + newfilename); }

else {

MessageBox.Show("Pilih file terlebih dahulu!"); }

}

} }

Kode Program frmKompresi.Designer.cs

partial class frmKompresi {

/// <summary>

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base.Dispose(disposing); }

/// <summary>

this.button1 = new System.Windows.Forms.Button();

this.OpenFD = new System.Windows.Forms.OpenFileDialog(); this.lblWaktu = new System.Windows.Forms.Label();

this.label18 = new System.Windows.Forms.Label(); this.textBox1 = new System.Windows.Forms.TextBox(); this.button2 = new System.Windows.Forms.Button(); this.SuspendLayout();

//

// button1 //

this.button1.Text = "Browse";

// OpenFD //

this.OpenFD.FileName = "openFileDialog1"; //

// lblWaktu //

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// label18 //

// textBox1 //

this.textBox1.BackColor = System.Drawing.SystemColors.ControlLightLight; this.textBox1.Location = new System.Drawing.Point(12, 20);

this.textBox1.Name = "textBox1"; this.textBox1.ReadOnly = true;

this.textBox1.Size = new System.Drawing.Size(218, 20); this.textBox1.TabIndex = 174;

//

// button2 //

this.button2.Text = "Kompresi";

// frmKompresi //

this.Controls.Add(this.button2); this.Controls.Add(this.textBox1); this.Controls.Add(this.lblWaktu); this.Controls.Add(this.label18); this.Controls.Add(this.button1);

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this.Name = "frmKompresi"; this.ShowInTaskbar = false;

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent; this.Text = "Kompresi Menggunakan Huffman";

this.ResumeLayout(false); this.PerformLayout();

}

#endregion

private System.Windows.Forms.Button button1;

private System.Windows.Forms.OpenFileDialog OpenFD; private System.Windows.Forms.Label lblWaktu;

private System.Windows.Forms.Label label18; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Button button2; }

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Perancangan Perangkat Lunak Pengaman File Text Menggunakan Algoritma El Gamal dan Kompresi File Tex Menggunakan Algoritma Huffman

LISTING PROGRAM

Kode Program frmUtama.cs

Kode Program frmUtama.Designer.cs

Kode Program frmEnkripsi.cs

Kode Program frmEnkripsi.Designer.cs

Kode Program frmDekripsi.cs

Kode Program frmDekripsi.Designer.cs

Kode Program frmKompresi.cs

Kode Program frmKompresi.Designer.cs

CURRICULUM VITAE

Nama

: Rachmat Saleh Hasibuan

Tempat / Tanggal Lahir

: Padangsidimpuan / 18 November 1990

Alamat

: Jl. Sei Musi No. 87 A, Medan

Agama

: Islam

Jenis Kelamin

: Laki-Laki

Alamat Email

: Rzhasibuand@gmail.com

No. Hp

: 085275316020

PENDIDIKAN FORMAL

2011-2015

S1 Ekstensi Ilmu Komputer Fasilkom-TI USU, Medan.

2008-2011

D3 Teknik Informatika USU, Medan.

2005-2008

SMA Negeri 3 Padangsidimpuan

2002-2005

SMP Negeri 1 Padangsidimpuan

1996-2002

SD Negeri 14 Padangsidimpuan

SEMINAR, KURSUS

2008

Peserta Seminar Teknologi Informasi “Welcome The Future

With Information Technology” Universitas Sumatera Utara

2010

Peserta Seminar Teknologi Informasi “Works

hop Networking

Windows Server Work Station” Universitas Sumatera Utara

2010

Peserta Seminar Nasional “Matematika dan Terapan 2010”

Universitas Sumatera Utara

2010

Peserta Seminar Internasional “Mathematics and Its

Applications 2010” Universitas Sumatera Ut

ara

KEAHLIAN

Bahasa

Indonesia, Inggris

Bahasa Pemrograman

C++, C#.Net, PHP, MySQL.

PENGALAMAN ORGANISASI

2008

Ketua Bidang Penlitian dan Pengembangan Ikatan Mahasiswa

Kota Padangsidimpuan

2009

Anggota Biasa HMI