LAMPIRAN A : LISTING PROGRAM
1.
Form Utama(MainActivity.java)
import android.os.Bundle;import android.view.View;
import android.view.View.OnClickListener; import android.widget.Button;
import android.app.Activity; import android.content.Intent;
public class MainActivity extends Activity { //Button tentang, bantuan;
@Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); ((Button)
findViewById(R.id.btnPesanbaru)).setOnClickListener(new OnClickListener() {
public void onClick(View v) {
MainActivity.this.startActivity(new Intent(
MainActivity.this, BuatPesan.class));
} }); ((Button)
findViewById(R.id.btnPesankeluar)).setOnClickListener(new OnClickListener() {
public void onClick(View v) { Intent click = new Intent(MainActivity.this,
DataPesan.class);
click.putExtra("tipepesan", "sent"); startActivity(click);
} }); ((Button)
findViewById(R.id.btnPesanmasuk)).setOnClickListener(new OnClickListener() {
public void onClick(View v) { Intent click = new Intent(MainActivity.this,
DataPesan.class); click.putExtra("tipepesan", "inbox");
startActivity(click); }
((Button)findViewById(R.id.btnBantuan)).setOnClickListener(n ew OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub Intent i = new
Intent(MainActivity.this,bantuan.class); startActivity(i);
} });
((Button)findViewById(R.id.btnTentang)).setOnClickListener(n ew OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub Intent i = new
Intent(MainActivity.this,tentang.class); startActivity(i);
} });
((Button)
findViewById(R.id.btnKeluar)).setOnClickListener(new OnClickListener() {
public void onClick(View v) { Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent); System.exit(0);
} }); }
}
2.
Form Buat Pesan Baru
import android.app.Activity;import android.content.ContentValues; import android.content.Intent;
import android.database.Cursor; import android.net.Uri;
import android.opengl.Visibility; import android.os.Bundle;
import android.provider.ContactsContract;
import android.telephony.SmsManager; import android.view.View;
import android.view.View.OnClickListener; import android.widget.Button;
import android.widget.EditText; import android.widget.ImageButton; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.Toast;
import java.io.UTFDataFormatException; import java.nio.charset.Charset;
import java.security.Key;
import java.security.PublicKey; import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec; import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey; import org.xml.sax.Parser;
public class BuatPesan extends Activity { EditText nomorKontak,
text,hasilencrypt,kunci_a_enk,kunci_b_enk,kunciaes_enk,hasilenc ryptkunci;
private static final Charset UTF8_CHARSET = Charset.forName("UTF-8");
// contact picker
private static final int CONTACT_PICKER_RESULT = 1001; private long
waktumulaiaes,waktuakhiraes,selisihaes,waktumulaiaffine,waktuak hiraffine,selisihaffine;
final int tipe_enkripsi=128; public boolean pil_rad=true; // phonecontact
public void doLaunchContactPicker(View view) { Uri uri =
ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
Intent contactPickerIntent = new Intent(Intent.ACTION_PICK, uri);
startActivityForResult(contactPickerIntent, CONTACT_PICKER_RESULT);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
String phone = ""; Cursor contacts = null; try {
if (resultCode == RESULT_OK) { switch (requestCode) { case CONTACT_PICKER_RESULT:
Uri result = data.getData();
// get the contact id from the Uri (last part is contact
// id)
String id = result.getLastPathSegment(); // queries the contacts DB for phone no contacts = getContentResolver().query( ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone._ID + "=?",
new String[] { id }, null); // gets index of phone no
int phoneIdx = contacts.getColumnIndex(Phone.DATA);
if (contacts.moveToFirst()) { // gets the phone no phone =
contacts.getString(phoneIdx);
EditText phoneTxt = (EditText) findViewById(R.id.nomorHp);
// assigns phone no to EditText field phoneno
phoneTxt.setText(phone); } else {
Toast.makeText(this, "error", Toast.LENGTH_LONG).show();
} break; }
} else {
// gracefully handle failure Toast.makeText(BuatPesan.this, R.string.belumdipilih,
Toast.LENGTH_SHORT).show(); }
} catch (Exception e) {
Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
} finally {
if (contacts != null) { contacts.close(); }
} }
@Override
public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.buatpesan); final ImageButton send = (ImageButton) findViewById(R.id.send);
final Button encryptkunci = (Button) findViewById(R.id.encryptkunci);
nomorKontak = (EditText) findViewById(R.id.nomorHp);
hasilencrypt = (EditText) findViewById(R.id.hasilEncrypt); hasilencryptkunci = (EditText)
findViewById(R.id.hasilEncryptkunci);
kunci_a_enk = (EditText) findViewById(R.id.kunci_a_enk); kunci_b_enk = (EditText) findViewById(R.id.kunci_b_enk); kunciaes_enk = (EditText) findViewById(R.id.KunciAES_enk);
Intent i = getIntent();
if (i.getStringExtra("message") != null) {
text.setText(i.getStringExtra("message")); }
encryptkunci.setOnClickListener(new OnClickListener() { @Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
waktumulaiaffine=System.currentTimeMillis(); String
ambilkunci=kunciaes_enk.getText().toString(); String enkunciaes="";
try { int a =
Integer.parseInt(kunci_a_enk.getText().toString()) ; int b =
Integer.parseInt(kunci_b_enk.getText().toString()) ; for (int i = 0; i < ambilkunci.length(); i++) {
//CTxt = CTxt + (char) ((((a * Msg.charAt(i)) + b) % 26) + 65); yang asli
enkunciaes = enkunciaes + (char) (((a * ambilkunci.charAt(i)) + b) % 128);
//Msg.charAt(i)-->ASCII kalo di kalikan interger jadi angka
//System.out.println("angka : "+(((a * Msg.charAt(i)) + b) % 128));
}
waktuakhiraffine=System.currentTimeMillis(); hasilencryptkunci.setText(enkunciaes);
selisihaffine=waktuakhiraffine-waktumulaiaffine; Toast.makeText(BuatPesan.this, "lama enkripsi affine "+Long.toString(selisihaffine),Toast.LENGTH_SHORT).show();
}
catch (Exception e1) {
Toast.LENGTH_SHORT).show(); e1.printStackTrace();
} } });
encrypt.setOnClickListener(new OnClickListener() { @Override
public void onClick(View e) {
String ambilKata = text.getText().toString(); String enKata = "";
try {
if (kunciaes_enk.getText().toString()!="" && text.getText().toString()!="") {
//String hasil1=null; waktumulaiaes = System.currentTimeMillis();
String keyaes_enk = kunciaes_enk.getText().toString();
enKata =
Aes.encrypt(keyaes_enk,ambilKata,tipe_enkripsi);
hasilencrypt.setText(enKata); waktuakhiraes =
System.currentTimeMillis();
selisihaes = waktuakhiraes-waktumulaiaes;
Toast.makeText(BuatPesan.this, "lama enkripsi aes
"+Long.toString(selisihaes),Toast.LENGTH_SHORT).show(); }
} catch (Exception e1) {
Toast.makeText(BuatPesan.this, "Pesan dan kunci tidak boleh kosong",
Toast.LENGTH_SHORT).show(); e1.printStackTrace();
} }
});
send.setOnClickListener(new OnClickListener() { public void onClick(View v) {
String pesan = hasilencrypt.getText().toString();
String nomor = nomorKontak.getText().toString(); if (pesan.length() > 0 && nomor.length() > 0) {
try {
// proses kirim sms SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(nomor, null, pesan, null, null);
ContentValues values = new ContentValues();
values.put("address", nomor); values.put("body", pesan); getContentResolver().insert( Uri.parse("content://sms/sent"), values);
Toast.makeText(BuatPesan.this, "Pesan berhasil dikirim", Toast.LENGTH_SHORT)
.show(); finish();
} catch (Exception e) {
Toast.makeText(BuatPesan.this, "Pesan gagal dikirim",
Toast.LENGTH_SHORT).show();
e.printStackTrace(); }
} else {
Toast.makeText(BuatPesan.this,
"Nomor atau Isi Pesan Masing Kosong",
Toast.LENGTH_SHORT).show(); }
} }); } }
3.
Form Melihat List Pesan yang tersimpan di device (DataPesan.java)
import java.util.Date;
import java.text.DateFormat; import android.app.Activity;
import android.content.ContentResolver; import android.content.Intent;
import android.database.Cursor; import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v4.widget.SimpleCursorAdapter; import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView;
import android.widget.TextView; import android.view.View;
private SimpleCursorAdapter dataAdapter; @Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.listpesan); displayListView();
}
private void displayListView() { Intent i = getIntent();
Uri uriSMS = Uri
.parse("content://sms/" + i.getStringExtra("tipepesan"));
Cursor cursor = getContentResolver().query(uriSMS, null, null, null,
null);
String[] columns = new String[] { "address", "body", "date" };
int[] to = new int[] { R.id.pengirim, R.id.isipesan, R.id.waktu };
dataAdapter = new SimpleCursorAdapter(this, R.layout.pesan_row, cursor,
columns, to, 0);
ListView listView = (ListView) findViewById(R.id.listView1); dataAdapter.setViewBinder(new
SimpleCursorAdapter.ViewBinder() { @Override
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
// ubah nomer hape dengan nama yang ada dikontak if (columnIndex == 2) {
TextView tv = (TextView) view; String pengirimDB =
cursor.getString(cursor
.getColumnIndex("address")); // get contact name
Uri contactUri = Uri.withAppendedPath( ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(pengirimDB)); Cursor cur =
getContentResolver().query(contactUri, null,
null, null, null); ContentResolver contect_resolver = getContentResolver();
int size = cur.getCount(); if (size > 0 && cur != null) {
String id1 = cur.getString(cur .getColumnIndexOrThrow(ContactsContract.Contacts._ID));
Cursor phoneCur = contect_resolver
.query(contactUri, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?",
new String[] { id1 }, null);
if (phoneCur.moveToFirst()) { String namaKontak = phoneCur.getString(phoneCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPL AY_NAME));
phoneCur.close();
tv.setText(namaKontak); } else {
tv.setText(pengirimDB); }
}
cur.close(); } else {
tv.setText(pengirimDB); }
return true; }
// konversi tanggal if (columnIndex == 4) {
TextView tv = (TextView) view;
String waktu = cursor.getString(cursor .getColumnIndex("date")); long l = Long.parseLong(waktu);
Date d = new Date(l); String date =
DateFormat.getDateInstance(DateFormat.LONG) .format(d); String time =
DateFormat.getTimeInstance().format(d);
String view_waktu = date + " " + time; tv.setText(view_waktu);
return true; }
});
// menampilkan daftar pesan
listView.setAdapter(dataAdapter);
// jika di pesan di klik, maka akan dialihkan ke lihat pesan secara full
listView.setOnItemClickListener(new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> listView, View view,
int position, long id) {
// Get the cursor, positioned to the corresponding row in the
// result set
Cursor cursor = (Cursor) listView.getItemAtPosition(position);
// Get the state's capital from this row in the database.
String view_pengirim = cursor.getString(cursor .getColumnIndexOrThrow("address")); String view_isipesan = cursor.getString(cursor
.getColumnIndexOrThrow("body")); String waktu = cursor.getString(cursor
.getColumnIndexOrThrow("date")); // konversi tanggal
long l = Long.parseLong(waktu); Date d = new Date(l);
String date =
DateFormat.getDateInstance(DateFormat.LONG) .format(d); String time =
DateFormat.getTimeInstance().format(d);
String view_waktu = date + " " + time;
String view_idpesan = cursor.getString(cursor .getColumnIndexOrThrow("_id")); String view_thread = cursor.getString(cursor .getColumnIndexOrThrow("thread_id"));
Intent click = new Intent(DataPesan.this, LihatPesan.class);
// get contact name
Uri contactUri = Uri.withAppendedPath( ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(view_pengirim)); Cursor cur =
getContentResolver().query(contactUri, null, null, null, null);
ContentResolver contect_resolver = getContentResolver();
for (int i = 0; i < size; i++) { cur.moveToPosition(i);
String id1 = cur.getString(cur .getColumnIndexOrThrow(ContactsContract.Contacts._ID));
Cursor phoneCur = contect_resolver .query(contactUri,
null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id1 },
null); if (phoneCur.moveToFirst()) {
String namaKontak = phoneCur.getString(phoneCur
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPL AY_NAME));
phoneCur.close(); click.putExtra("no", namaKontak);
} else {
click.putExtra("no", view_pengirim);
} }
cur.close(); } else {
click.putExtra("no", view_pengirim); }
// kirim data ke view pesan
click.putExtra("msg", view_isipesan); click.putExtra("idpesan", view_idpesan); click.putExtra("idthread", view_thread); click.putExtra("date", view_waktu); Intent i = getIntent();
click.putExtra("asal", i.getStringExtra("tipepesan"));
startActivity(click); }
}); }
@Override
public void onBackPressed() {
Intent link = new Intent(DataPesan.this, MainActivity.class);
} }
4.
Class enkripsi dan dekripsi AES (Aes.java)
import java.security.SecureRandom; import javax.crypto.Cipher;import javax.crypto.KeyGenerator; import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec; public class Aes {
public static String encrypt(String kunci, String plaintext, int tipe) throws Exception {
byte[] rawKey = rawKey(kunci.getBytes(),tipe); byte[] hasil =
encrypt(rawKey,plaintext.getBytes()); return k_hexa(hasil); }
public static String decrypt(String kunci, String plaintext, int tipe) throws Exception {
byte[] rawKey = rawKey(kunci.getBytes(), tipe); byte[] enc = k_byte(plaintext);
byte[] result = decrypt(rawKey, enc); return new String(result);
}
private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {
SecretKeySpec s_kunci_rahasia = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES"); cipher.init(Cipher.ENCRYPT_MODE,
s_kunci_rahasia);
byte[] encrypted = cipher.doFinal(clear); return encrypted;
}
private static byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception {
SecretKeySpec s_kunci_rahasia = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES"); cipher.init(Cipher.DECRYPT_MODE,
s_kunci_rahasia);
byte[] decrypted = cipher.doFinal(encrypted); return decrypted;
}
private static byte[] rawKey(byte[] kunci,int tipe) throws Exception {
KeyGenerator kunci_gen = KeyGenerator.getInstance("AES");
SecureRandom acak =
SecureRandom.getInstance("SHA1PRNG","Crypto"); acak.setSeed(kunci);
SecretKey kunci_rahasia = kunci_gen.generateKey();
byte[] raw = kunci_rahasia.getEncoded(); return raw;
}
public static String d_hexa(String hexa) { return new String(k_byte(hexa)); }
public static String k_hexa(byte[] buffer) { if (buffer == null)
{
return ""; }
StringBuffer hasil = new StringBuffer(2 * buffer.length);
for (int i = 0; i < buffer.length; i++) {
appendHex(hasil, buffer[i]); }
return hasil.toString(); }
public static byte[] k_byte(String hexa_string) { int panjang = hexa_string.length() / 2; byte[] hasil = new byte[panjang];
for (int i = 0; i < panjang; i++) {
hasil[i] =
Integer.valueOf(hexa_string.substring(2 * i,2 * i + 2),16).byteValue();
}
return hasil; }
private final static String hexa = "0123456789ABCDEF"; private static void appendHex(StringBuffer str_buffer, byte b) {
str_buffer.append(hexa.charAt((b >> 4) & 0x0f)).append(hexa.charAt(b & 0x0f));
} }
5.
Form untuk membaca pesan masuk/keluar dan untuk dekripsi
(LihatPesan.java)
import android.app.Activity;
import android.content.DialogInterface; import android.content.Intent;
import android.net.Uri; import android.os.Bundle; import android.view.View;
import android.widget.EditText; import android.widget.RadioButton; import android.widget.TextView; import android.widget.Toast;
import java.io.UTFDataFormatException; import java.nio.charset.Charset;
public class LihatPesan extends Activity {
private static final Charset UTF8_CHARSET = Charset.forName("UTF-8");
final int tipe_enkripsi=128; private long
selisihaes,waktuawalaes,waktuakhiraes,selisihaffine,waktuawa laffine,waktuakhiraffine,selisihtotal;
TextView number, date, msg,hasilDekripsi; Button forward,
hapus,dekripsi,dekripsikunci,btndekripaes; EditText
kunci_a_dek,kunci_b_dek,kunciaes_Dek,hasildekkunciaes; public boolean pil_rad=true;
@Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.lihatpesan);
number = (TextView) findViewById(R.id.tvNumber); date = (TextView) findViewById(R.id.tvDate); msg = (TextView) findViewById(R.id.tvMsg); hasilDekripsi = (TextView)
findViewById(R.id.hasildekrip); dekripsi = (Button) findViewById(R.id.dekripsiBtn);
forward = (Button) findViewById(R.id.btFrd); btndekripaes=(Button)
findViewById(R.id.btnDekripkunci);
hapus = (Button) findViewById(R.id.hapus); kunci_a_dek = (EditText)
findViewById(R.id.kunci_a_dek); kunci_b_dek = (EditText) findViewById(R.id.kunci_b_dek);
hasildekkunciaes=(EditText) findViewById(R.id.hasildekkunciaes);
kunciaes_Dek = (EditText) findViewById(R.id.kunciaes_dek);
kunci_a_dek.setVisibility(View.VISIBLE); kunci_b_dek.setVisibility(View.VISIBLE); kunciaes_Dek.setVisibility(View.VISIBLE); hasildekkunciaes.setVisibility(View.VISIBLE); btndekripaes.setVisibility(View.VISIBLE); btndekripaes.setOnClickListener(new
OnClickListener() {
@Override
public void onClick(View arg0) {
int a_inv = 0; int flag = 0;
waktuawalaffine=System.currentTimeMillis(); String ambilKata = kunciaes_Dek.getText().toString();
String deKata = ""; try {
//enKata = GenerateAES.encrypt(ambilKunci, ambilKata);
int a =
Integer.parseInt(kunci_a_dek.getText().toString()) ; int b =
Integer.parseInt(kunci_b_dek.getText().toString()) ;
for (int i = 0; i < 128; i++)
{
flag = (a * i) % 128; if (flag == 1)
{
a_inv = i;
System.out.println(i);
} }
for (int i = 0; i < ambilKata.length(); i++)
{
int nilai=a_inv*(ambilKata.charAt(i)-b);
int mod=128; //if
(a_inv*(CTxt.charAt(i)-b)>0)
while (nilai<=0) { nilai=nilai+128; mod=mod+128;
}
deKata = deKata + (char) (nilai % mod);
//System.out.println("nilai = "+ ((a_inv * (CTxt.charAt(i) - b)) % 128)+" "+a_inv);
waktuakhiraffine=System.currentTimeMillis(); hasildekkunciaes.setText(deKata);
selisihaffine=waktuawalaffine-waktuawalaffine;
Toast.makeText(LihatPesan.this, "lama dekripsi affine "+Long.toString(selisihaffine),Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{hasilDekripsi.setText("kunci tidak memenuhi GCD atau tidak memenuhi syarat inversi modulo ");}
} });
dekripsi.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) { int a_inv = 0;
int flag = 0; String ambilKata = msg.getText().toString();
String deKata = "";
try {
//enKata = GenerateAES.encrypt(ambilKunci, ambilKata);
if (pil_rad==true) { if
(hasildekkunciaes.getText().toString()!="") { waktuawalaes=System.currentTimeMillis();
String hasil2e=null;
String keyaes_dek = hasildekkunciaes.getText().toString();
hasil2e = Aes.decrypt(keyaes_dek,ambilKata,tipe_enkripsi);
waktuakhiraes=System.currentTimeMillis(); hasilDekripsi.setText(hasil2e);
selisihaes=(waktuakhiraes-waktuawalaes); selisihtotal=selisihaes+selisihaffine;
Toast.makeText(LihatPesan.this, "waktu dekripsi aes affine
else{
Toast.makeText(LihatPesan.this, "CipherText Kunci AES masih kosong",Toast.LENGTH_SHORT).show();
} }
else if (pil_rad==false) { waktuawalaes=System.currentTimeMillis();
String hasil2=null; String keyaes_dek = kunciaes_Dek.getText().toString();
hasil2 = Aes.decrypt(keyaes_dek,ambilKata,tipe_enkripsi);
waktuakhiraes=System.currentTimeMillis(); hasilDekripsi.setText(hasil2);
selisihaes=waktuakhiraes-waktuawalaes;
Toast.makeText(LihatPesan.this, "waktu dekrips aes "+Long.toString(selisihaes),Toast.LENGTH_SHORT).show();
}
} catch (Exception e)
{hasilDekripsi.setText("kunci tidak memenuhi GCD atau tidak memenuhi syarat inversi modulo ");}
} }); }
@Override
protected void onStart() { super.onStart();
Intent i = getIntent();
number.setText(i.getStringExtra("no")); date.setText(i.getStringExtra("date")); msg.setText(i.getStringExtra("msg"));
forward.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) { Intent click = new Intent(LihatPesan.this, BuatPesan.class);
click.putExtra("message", msg.getText());
startActivity(click); }
});
hapus.setOnClickListener(new OnClickListener() { @Override
R.string.hapuspesan_dialog,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
Intent i = getIntent();
String id_pesan_hapus = i
.getStringExtra("idpesan");
String id_thread_hapus = i
.getStringExtra("idthread");
// hapus pesan
Uri deleteUri = Uri.parse("content://sms");
getContentResolver() .delete(deleteUri,
"thread_id=? and _id=?", new String[] {
String.valueOf(id_thread_hapus), String.valueOf(id_pesan_hapus) });
finish(); Toast.makeText(LihatPesan.this,
"Pesan Terhapus", Toast.LENGTH_SHORT) .show();
// redirect data pesan
onBackPressed();
} }); }
}); }
public void onRadioButtonCliked(View r) {
switch (r.getId()) {
case R.id.radioButtonAESaffine: if (checked) {
kunci_a_dek.setVisibility(View.VISIBLE); kunci_b_dek.setVisibility(View.VISIBLE); kunciaes_Dek.setVisibility(View.VISIBLE); hasildekkunciaes.setVisibility(View.VISIBLE); btndekripaes.setVisibility(View.VISIBLE); kunciaes_Dek.setVisibility(View.VISIBLE);
kunciaes_Dek.setHint("Masukkan CipherKey AES");
kunciaes_Dek.setText(""); hasildekkunciaes.setText(""); pil_rad=true;
} break;
case R.id.radioButtonAES: if (checked) {
kunciaes_Dek.setVisibility(View.VISIBLE); kunci_a_dek.setVisibility(View.INVISIBLE); kunci_b_dek.setVisibility(View.INVISIBLE); btndekripaes.setVisibility(View.INVISIBLE); hasildekkunciaes.setVisibility(View.INVISIBLE);
kunciaes_Dek.setHint("Kunci (Max 16)");
kunci_a_dek.setText(""); kunci_b_dek.setText(""); kunciaes_Dek.setText(""); hasildekkunciaes.setText(""); pil_rad=false;
} break; }
}
@Override
public void onBackPressed() {
Intent link = new Intent(LihatPesan.this, DataPesan.class);
Intent i = getIntent(); link.putExtra("tipepesan", i.getStringExtra("asal"));
startActivity(link); }
6.
Form tentang (tentang.java)
import android.app.Activity; import android.os.Bundle;public class tentang extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.tentang);
} }
7.
Form batuan (bantuan.java)
import android.app.Activity; import android.os.Bundle;
public class bantuan extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.bantuan);
}
