3. LihatPesan.java
import android.app.Activity; import android.content.DialogInterface;
import android.content.Intent; import android.net.Uri;
import android.os.Bundle; import android.util.Log;
import android.view.View; import android.view.View.OnClickListener;
import android.widget.Button; import android.widget.EditText;
import android.widget.TextView; import android.widget.Toast;
import java.nio.charset.Charset; import java.util.Random;
public class LihatPesan extends Activity { private static final Charset UTF8_CHARSET = Charset.forNameUTF-8;
final int tipe_enkripsi=128; private long
selisihhill,waktuawalhill,waktuakhirhill,selisihrabin,waktuawalrabin,waktuakhirrab in,selisihtotal;
TextView number, date, msg,hasilDekripsi; Button forward, hapus,dekripsi,dekripsikunci,btndekriphill;
EditText kunci_p_dek,kunci_q_dek,nilai_k,kuncihill_Dek,hasildekkuncihill; public boolean pil_rad=true;
Override protected void onCreateBundle savedInstanceState {
super.onCreatesavedInstanceState; setContentViewR.layout.lihatpesan;
this.setTitleDecrypt Message; number = TextView findViewByIdR.id.tvNumber;
date = TextView findViewByIdR.id.tvDate; msg = TextView findViewByIdR.id.tvMsg;
hasilDekripsi = TextView findViewByIdR.id.hasildekrip; dekripsi = Button findViewByIdR.id.dekripsiBtn;
forward = Button findViewByIdR.id.btFrd; btndekriphill=Button findViewByIdR.id.btnDekripkunci;
hapus = Button findViewByIdR.id.hapus; kunci_p_dek = EditText findViewByIdR.id.kunci_p_dek;
kunci_q_dek = EditText findViewByIdR.id.kunci_q_dek; hasildekkuncihill=EditText findViewByIdR.id.hasildekkuncihill;
kuncihill_Dek = EditText findViewByIdR.id.kuncihill_dek; nilai_k = EditTextfindViewByIdR.id.k_values;
kuncihill_Dek.setTextSimpanKunci.getCipherkey; nilai_k.setTextSimpanKunci.getKkey;
btndekriphill.setOnClickListenernew OnClickListener { Override
public void onClickView arg0 { TODO Auto-generated method stub
int a_inv = 0; int flag = 0;
waktuawalrabin=System.currentTimeMillis; String ambilkata2 = kuncihill_Dek.getText.toString;
String kunci_dek = kunci_p_dek.getText.toString; String temp=;
String hasil2 = null; try {
String keyx = SimpanKunci.getCipherkey; String p = kunci_p_dek.getText.toString;
String q = kunci_q_dek.getText.toString; String k = SimpanKunci.getKkey;
if .equalskeyx { kuncihill_Dek.setErrorYour Cipherkey is Empty;
} else if .equalsp { kunci_p_dek.setErrorPrivate Keys cannot Empty;
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} else if .equalsq { kunci_q_dek.setErrorPrivate Keys cannot Empty;
} else if p.equalsq { kunci_p_dek.setErrorPrivate Keys must be Different;
} else if p.matches[0-9] { kunci_p_dek.setErrorPrivate Keys must be a Number;
} else if q.matches[0-9] { kunci_q_dek.setErrorPrivate Keys must be a Number;
} else if fermatInteger.parseIntp { kunci_p_dek.setErrorPrivate Key must be a Prime
Number; } else if fermatInteger.parseIntq {
kunci_q_dek.setErrorPrivate Key must be a Prime Number;
} else if Integer.parseIntp 4 = 3 { kunci_p_dek.setErrorPrivate Keys must have modulus 3
when devide by 4; } else if Integer.parseIntq 4 = 3 {
kunci_q_dek.setErrorPrivate Keys must have modulus 3 when devide by 4;
} else if .equalsk { nilai_k.setErrorK cannot Empty;
}else { long startTime=System.currentTimeMillis;
int uvw = Integer.parseIntp; int xyz = Integer.parseIntq;
int n = uvw xyz; int P = uvw + 1 4;
int Q = xyz + 1 4; int vals[] = gcduvw, xyz;
int Yp = vals[1]; int Yq = vals[2];
int r, s, t, u, R, S, T, U; String[] cipherteks = keyx.split ;
int[] arrayCiptext = new int[cipherteks.length]; String[] Kvalues = k.split ;
int[] arrayK = new int[Kvalues.length]; for int i = 0; i cipherteks.length; i++ {
try { arrayCiptext[i] = Integer.parseIntcipherteks[i];
arrayK[i] = Integer.parseIntKvalues[i]; } catch NumberFormatException nfe {
} int cipher = arrayCiptext[i];
int K = arrayK[i]; double mp = modExpcipher, P, uvw;
double mq = modExpcipher, Q, xyz; int a1 = int Yp uvw mq;
int a2 = int Yq xyz mp; r = a1 + a2 n + n n;
R = K n + r; String Rx = toBinaryR;
s = a1 - a2 n + n n; S = K n + s;
String Sx = toBinaryS; t = -a1 + a2 n + n n;
T = K n + t; String Tx = toBinaryT;
u = -a1 - a2 n + n n; U = K n + u;
String Ux = toBinaryU; tabelEnc tabelEnc= new tabelEnc;
char hsl; if checkRx {
String RR = singlebinRx; long Rfinal = Long.parseLongRR;
long Rfin = toDecimalRfinal; hsl=tabelEnc.getCharintRfin;
hasildekkuncihill.setTexthasildekkuncihill.getText.toString + hsl; } else if checkSx {
String SS = singlebinSx;
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long Sfinal = Long.parseLongSS; long Sfin = toDecimalSfinal;
hsl=tabelEnc.getCharintSfin; hasildekkuncihill.setTexthasildekkuncihill.getText.toString + hsl;
} else if checkTx { String TT = singlebinTx;
long Tfinal = Long.parseLongTT; long Tfin = toDecimalTfinal;
hsl=tabelEnc.getCharintTfin; hasildekkuncihill.setTexthasildekkuncihill.getText.toString + hsl;
} else if checkUx { String UU = singlebinUx;
long Ufinal = Long.parseLongUU; long Ufin = toDecimalUfinal;
hsl=tabelEnc.getCharintUfin; hasildekkuncihill.setTexthasildekkuncihill.getText.toString + hsl;
} else { hasildekkuncihill.setText;
} }
DekripsiAutokeyCiphermsgx, key.getText.toString; long endTime=System.currentTimeMillis;
long duration = endTime - startTime; SimpanKunci.Reset;
Toast.makeTextgetApplicationContext, Decryption Time: +duration+ms, Toast.LENGTH_LONG.show;
} } catch Exception e {
TODO Auto-generated catch block e.printStackTrace;
} hasildekkunciaes.setTexttemp;
waktuakhirrabin=System.currentTimeMillis; selisihrabin=waktuakhirrabin-waktuawalrabin;
Toast.makeTextLihatPesan.this, lama dekripsi rabin +Long.toStringselisihrabin,Toast.LENGTH_SHORT.show;
} };
dekripsi.setOnClickListenernew OnClickListener { Override
public void onClickView arg0 { int a_inv = 0;
int flag = 0; String ambilKata = msg.getText.toString;
String deKata = ; try {
if .equalshasildekkuncihill.getText.toString { waktuawalhill=System.currentTimeMillis;
String hasil2e=null; String keyaes_dek =
hasildekkuncihill.getText.toString; hillCipher obj1 = new hillCipher;
double sq = Math.sqrtkeyaes_dek.length; System.out.printlnini double +sq+ ini long
+longsq+ ini int +intsq; if sq = long sq
System.out.printlnpanjang kunci salah; 0+3TLeT9[I.MV5hk1zz mOTRQBU
else {
int s = int sq; if obj1.checkkeyaes_dek, s
{ System.out.printlnResult:;
obj1.cofactobj1.keymatrix, s; System.out.printinversi key +obj1.invkey;
keyaes_dek=obj1.invkey;
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} }
double sqt = Math.sqrtkeyaes_dek.length; System.out.printlnini double +sq+ ini long
+longsq+ ini int +intsq; if sqt = long sqt
System.out.printlnpanjang kunci salah; 0+3TLeT9[I.MV5hk1zz mOTRQBU
else {
int s = int sqt; if obj1.checkkeyaes_dek, s
{ System.out.printlnResult:;
obj1.divideambilKata, s; pakai kunci ASCII dari 32-126
System.out.printlnini ya wee :+obj1.hasilenkripsi;
deKata=obj1.hasilenkripsi; obj1.cofactobj1.keymatrix, s;
System.out.printinversi key +obj1.invkey; }
} waktuakhirhill=System.currentTimeMillis;
hasilDekripsi.setTextdeKata; selisihhill=waktuakhirhill-waktuawalhill;
selisihtotal=selisihhill+selisihrabin; Toast.makeTextLihatPesan.this, waktu dekrips Hill Cipher
+Long.toStringselisihtotal,Toast.LENGTH_SHORT.show; }
else{ Toast.makeTextLihatPesan.this, PlainText Kunci Hill
masih kosong,Toast.LENGTH_SHORT.show; }
} catch Exception e { Log.iError, e.getMessage;hasilDekripsi.setTextkunci
tidak memenuhi GCD atau tidak memenuhi syarat inversi modulo ;} }
}; }
Override protected void onStart {
super.onStart; Intent i = getIntent;
number.setTexti.getStringExtrano; date.setTexti.getStringExtradate;
msg.setTexti.getStringExtramsg; forward.setOnClickListenernew OnClickListener {
Override public void onClickView v {
Intent click = new IntentLihatPesan.this, BuatPesan.class; click.putExtramessage, msg.getText;
startActivityclick; }
}; hapus.setOnClickListenernew OnClickListener {
Override public void onClickView v {
Dialogs.showConfirmationLihatPesan.this, R.string.hapuspesan_dialog,
new DialogInterface.OnClickListener { public void onClickDialogInterface dialog,
int which { Intent i = getIntent;
String id_pesan_hapus = i .getStringExtraidpesan;
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String id_thread_hapus = i .getStringExtraidthread;
hapus pesan Uri deleteUri = Uri.parsecontent:sms;
getContentResolver .deletedeleteUri,
thread_id=? and _id=?, new String[] {
String.valueOfid_thread_hapus, String.valueOfid_pesan_hapus };
finish; Toast.makeTextLihatPesan.this,
Pesan Terhapus, Toast.LENGTH_SHORT .show;
redirect data pesan onBackPressed;
} };
} };
} public String toBinarylong n {
if n == 0 { return 0;
} String binary = ;
while n 0 { long rem = n 2;
binary = rem + binary; n = n 2;
} return binary;
} public long toDecimallong binary{
long decimal = 0; long power = 0;
whiletrue{ ifbinary == 0{
break; } else {
long temp = binary10; decimal += tempMath.pow2, power;
binary = binary10; power++;
} }
return decimal; }
public static int[] gcdint p, int q { if q==0
return new int[] { p, 1, 0 }; int[] vals = gcdq, p q;
int d = vals[0]; int a = vals[2];
int b = vals[1] - p q vals[2]; return new int[] { d, a, b };
} public static int modExpint a, int b, int n {
if b == 0 return 1; long t = modExpa, b2, n;
long c = ttn; if b2 == 1
c = can;
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return intc; }
public boolean checkString x{ boolean hsl = true;
int a = Math.roundx.length2; forint i=0; ia; ++i
if x.charAti=x.charAti+a hsl=false;
return hsl; }
public boolean fermatint p{ boolean hasil=true;
Random rand = new Random; int a=rand.nextInt20+1;
if ap==0{ hasil=false;
} else if modExpa,p-1,p=1{
hasil=false; }
return hasil; }
public String singlebinString x{ String n=;
forint y=0; yMath.floorx.length2; y++{ n= n+x.charAty;
} return n;
} Override
public void onBackPressed { Intent link = new IntentLihatPesan.this, DataPesan.class;
Intent i = getIntent; link.putExtratipepesan, i.getStringExtraasal;
startActivitylink; }}
4. MainActivity.java
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