Implementasi Algoritma Vernam Cipher dalam Skema Three-Pass Protocol untuk Pengamanan Citra Bitmap Berbasis Android

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LISTING PROGRAM

Menu Proses

package com.example.skripsii;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException;

import java.io.OutputStreamWriter; import java.text.SimpleDateFormat; import java.util.ArrayList;

import java.util.Date; import java.util.Random; import android.app.Activity; import android.app.AlertDialog;

import android.content.DialogInterface; import android.content.Intent;

import android.database.Cursor; import android.graphics.Bitmap;

import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Color;

import android.graphics.drawable.BitmapDrawable; import android.net.Uri;

import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.util.Log;

import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.Toast;

public class Sender extends Activity implements View.OnClickListener {

public int SELECT_PICTURE = 1; public String selectedImagePath; public double mse1,psnr1;

ArrayList<Integer> kunci1,kunci2;

ImageView img, imgc1, imgc2, imgc3, imgdekrip; Bitmap bmp;

Integer baris,kolom;

EditText nama, size1, size2, mse, psnr;

Button btn_pilih, btn_kunci1, btn_kunci2, btn_proses1, btn_proses2, btn_proses3, btn_dekrip, btn_reset;

@Override

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

setContentView(R.layout.sender);

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imgc3 = (ImageView)findViewById(R.id.img_c3);

imgdekrip = (ImageView)findViewById(R.id.img_dekripsi); nama = (EditText)findViewById(R.id.et_nama);

size1 = (EditText)findViewById(R.id.et_size1); size2 = (EditText)findViewById(R.id.et_size2); mse = (EditText)findViewById(R.id.et_mse); psnr = (EditText)findViewById(R.id.et_psnr);

btn_pilih = (Button)findViewById(R.id.button_pilih); btn_pilih.setOnClickListener(this);

btn_kunci1 = (Button)findViewById(R.id.button_kpengirim); btn_kunci1.setOnClickListener(this);

btn_kunci2 = (Button)findViewById(R.id.button_kpenerima); btn_kunci2.setOnClickListener(this);

btn_proses1 = (Button)findViewById(R.id.button_c1); btn_proses1.setOnClickListener(this);

btn_dekrip = (Button)findViewById(R.id.button_dekripsi); btn_dekrip.setOnClickListener(this);

btn_reset = (Button)findViewById(R.id.button_reset); btn_reset.setOnClickListener(this);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true;

}

public void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode == RESULT_OK) {

if (requestCode == SELECT_PICTURE) {

Uri selectedImageUri = data.getData();

selectedImagePath = getPath(selectedImageUri); nama.setText(selectedImageUri.toString());

try {

File f = new File(selectedImagePath); bmp = BitmapFactory.decodeStream(new

FileInputStream(f));

if (f.getPath().endsWith(".bmp")) { img.setImageBitmap(bmp);

} else {

nama.setText(""); size1.setText(""); size2.setText("");

img.setImageBitmap(null);

Toast.makeText(getBaseContext(), "Silahkan pilih gambar dengan ekstensi .bmp",

Toast.LENGTH_SHORT).show(); }

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size1.setText(x.toString()); size2.setText(y.toString());

if ((bmp.getWidth() > 1000) && (bmp.getHeight() > 1000 )) {

img.setImageBitmap(null);

Toast.makeText(getBaseContext(), "Resolusi Gambar diatas 1000x1000 piksel, silahkan pilih gambar yang lebih kecil dari 1000x1000 piksel",

}

catch (FileNotFoundException e){ e.printStackTrace();

} } } }

public String getPath(Uri uri) { if( uri == null ) { return null; }

String[] projection = { MediaStore.Images.Media.DATA }; Cursor cursor = managedQuery(uri, projection, null,

null, null);

if( cursor != null ){ int column_index =

cursor.getColumnIndexOrThrow(MediaStore.Images.Medi a.DATA);

cursor.moveToFirst();

String path = cursor.getString(column_index); cursor.close();

return path; }

return uri.getPath(); }

public void onClick(View v) { if (v == btn_pilih) {

Intent intent = new Intent(); intent.setType("image/*");

intent.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(Intent.createChooser(intent,"Sele ct Picture"), SELECT_PICTURE);

}

else if(v == btn_kunci1) {

kunci1 = new ArrayList<Integer>(); Random rand = new Random();

Bitmap bitmap =

((BitmapDrawable)img.getDrawable()).getBitmap();

for(int i=0; i<bitmap.getHeight()*bitmap.getWidth();i++) {

kunci1.add(rand.nextInt(256)); }

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Berhasil Dibuat", Toast.LENGTH_SHORT).show(); }

else if(v == btn_kunci2) {

kunci2 = new ArrayList<Integer>(); Random rand = new Random();

Bitmap bitmap =

((BitmapDrawable)img.getDrawable()).getBitmap();

for(int i=0;

i<bitmap.getHeight()*bitmap.getWidth();i++)

{

kunci2.add(rand.nextInt(256));

}

Toast.makeText(getBaseContext(), "Kunci Penerima Berhasil Dibuat", Toast.LENGTH_SHORT).show(); }

else if(v == btn_proses1) {

double startTime = System.currentTimeMillis(); Bitmap bitmap =

((BitmapDrawable)img.getDrawable()).getBitmap(); Bitmap hasil = Bitmap.createBitmap(bitmap.getWidth(),

bitmap.getHeight(), Config.ARGB_8888);

int p, R, G, B, k=0;

for(int i=0; i<bitmap.getWidth();i++) {

for(int j=0; j<bitmap.getHeight();j++) {

p = bitmap.getPixel(i, j); R = Color.red(p);

G = Color.green(p); B = Color.blue(p);

hasil.setPixel(i, j, Color.argb(255, R^kunci1.get(k), G^kunci1.get(k), B^kunci1.get(k)));

k++;

} }

imgc1.setImageBitmap(hasil);

double endTime = System.currentTimeMillis();

double totalTime = (endTime - startTime) / 1000;

Toast.makeText(getBaseContext(), "Enkripsi C1 berhasil dengan waktu "+ totalTime + " sekon",

((BitmapDrawable)imgc1.getDrawable()).getBitmap(); Bitmap hasil = Bitmap.createBitmap(bitmap.getWidth(),

bitmap.getHeight(), Config.ARGB_8888); int p, R, G, B, k=0;

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k++;

} }

imgc2.setImageBitmap(hasil);

double endTime = System.currentTimeMillis(); double totalTime = (endTime - startTime)/1000;

bitmap.getHeight(), Config.ARGB_8888);

int p, R, G, B, k=0;

k++;

} }

imgc3.setImageBitmap(hasil); double endTime = System.currentTimeMillis();

Toast.LENGTH_SHORT).show();

}

else if(v == btn_dekrip) {

bitmap.getHeight(), Config.ARGB_8888); int p, R, G, B, k=0, pixelAsli, pixelHasil; int R1,G1,B1;

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k++;

} }

pixelAsli = bmp.getPixel(i, j); pixelHasil = hasil.getPixel(i, j); R1 = Color.red(pixelAsli);

G1 = Color.green(pixelAsli); B1 = Color.blue(pixelAsli); R2 = Color.red(pixelHasil); G2 = Color.green(pixelHasil); B2 = Color.blue(pixelHasil);

mse1 = mse1 + Math.pow(R1-R2, 2) +

Math.pow(G1-G2, 2) + Math.pow(B1-B2, 2); }

mse1= 1.0/(bitmap.getWidth()*bitmap.getHeight()) * mse1;

psnr1 = 10*Math.log10(Math.pow(255, 2)/mse1);

mse.setText(Double.toString(mse1)); psnr.setText(Double.toString(psnr1)); }

imgdekrip.setImageBitmap(hasil);

double endTime = System.currentTimeMillis();

Toast.makeText(getBaseContext(), "Dekripsi berhasil dengan waktu "+ totalTime + " sekon",

else if(v == btn_reset) {

img.setImageResource(R.drawable.noo); imgc1.setImageResource(R.drawable.noo2); imgc2.setImageResource(R.drawable.noo2); imgc3.setImageResource(R.drawable.noo2); imgdekrip.setImageResource(R.drawable.noo2); }

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@Override

public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) {

case R.id.action_home:

Intent i=new Intent(Sender.this, MainActivity.class) ;

this.finish(); startActivity(i); break;

case R.id.action_tpp:

Intent a=new Intent(Sender.this, Sender.class) ; this.finish();

startActivity(a);

break;

case R.id.action_help:

Intent c=new Intent(Sender.this, Help.class) ; this.finish();

startActivity(c);

}

return super.onOptionsItemSelected(item); }

public void onBackPressed(){ exit();

}

public void exit(){

AlertDialog.Builder builder = new AlertDialog.Builder(Sender.this);

builder.setMessage("Do you want to exit ?").setCancelable(true)

.setPositiveButton("Yes",new

DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Sender.this.finish(); } }).setNegativeButton("No", new

DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.cancel();

Toast.makeText(getBaseContext(), "Anda membatalkan perintah keluar", Toast.LENGTH_SHORT).show();

}

}).show();

}

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DAFTAR RIWAYAT HIDUP

C

URRICULUM

V

ITAE

I. DATA PRIBADI /_{Personal Identification}

Nama Lengkap : Lily Aulya Tempat/

Tgl. Lahir

: Padangsidimpuan / 26 Agustus 1995

Jenis Kelamin : Perempuan

Agama : Islam

Kebangsaan : Indonesia

Alamat : Jl. Silandit, Lk.IV, Komplek Sidimpuan Baru, Padangsidimpuan

Telepon : 085261116009

Email : [email protected]

II. KEMAMPUAN / _Capabilities

Bahasa : Bahasa Indonesia, Bahasa Inggris Bahasa Pemrograman : C#, C++, PHP, Java

Database : MySQL

Lainnya : HTML, Ms. Office

III. PENDIDIKAN FORMAL / _{Formal Education}

 [ 2013 – 2017 ] S1 Ilmu Komputer, Fakultas Ilmu Komputer dan Teknologi Informasi Universitas Sumatera Utara

 [ 2010 – 2013 ] SMA Negri 1 Padangsidimpuan

 [ 2007 – 2010 ] SMP Negeri 4 Padangsidimpuan

 [ 2001 – 2007 ] SD Negeri 200117 Padangsidimpuan

IV. PENDIDIKAN NON-FORMAL / _{Informal Education}

 [ 2012 – 2013 ] Ganesha Operation, Medan

V. PELATIHAN DAN SEMINAR / _{Trainings & Workshop}

1) Peserta Seminar Nasional “Melalui Inovasi Teknologi untuk Menciptakan Mahasiswa

Kreatif dan Mandiri”, Universitas Sumatera Utara [2017]

2) Peserta Workshop “Bank Indonesia Goes To Campus Bersama NET.”, Universitas Sumatera

Utara [2016]

3) Peserta TRANSFORMER (Training Super for Mid Level Kader), UKMI Al-Khuwarizmi, Universitas Sumatera Utara [2015]

4) Peserta Seminar Nasional Literasi Informasi (SENARAI) Fasilkom-TI Universitas Sumatera Utara [2014]

5) Peserta TRICK (Training Islam Ceria dan Kreatif), UKMI Al-Khuwarizmi, Universitas Sumatera Utara [2013]

6) Peserta Seminar “What Will You Be?” IMILKOM, Universitas Sumatera Utara [2013]

XIII. LAINNYA / _Others

1) Penerima Beasiswa BBM (Bantuan Belajar Mahasiswa) [2014]

2) Penerima Beasiswa BBM (Bantuan Belajar Mahasiswa) [2016]