LISTING PROGRAM. com.example.jessicatamara.myapplication4;

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1 A-1 LISTING PROGRAM MainActivity.java package import import import import import import com.example.jessicatamara.myapplication4; android.content.intent; android.support.v7.app.appcompatactivity; android.os.bundle; android.view.view; android.widget.button; android.widget.textview; public class MainActivity extends AppCompatActivity View.OnClickListener{ implements TextView txt_home; Button btn_enkripsi, btn_dekripsi, btn_tentang, btn_bantuan, btn_keluar; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); txt_home = (TextView) findviewbyid(r.id.textviewhome); btn_enkripsi = (Button) findviewbyid(r.id.buttonenkripsi); btn_enkripsi.setonclicklistener(this); btn_dekripsi = (Button) findviewbyid(r.id.buttondekripsi); btn_dekripsi.setonclicklistener(this); btn_tentang = (Button) findviewbyid(r.id.buttontentang); btn_tentang.setonclicklistener(this); btn_bantuan = (Button) findviewbyid(r.id.buttonbantuan); btn_bantuan.setonclicklistener(this); public void onclick(view v) { int klik = v.getid(); if (klik == R.id.buttonEnkripsi) { Intent i = new Intent (MainActivity.this, Enkripsi_File.class); startactivity(i); else if (klik==r.id.buttondekripsi) { Intent i = new Intent (MainActivity.this, dekripsi_file.class); startactivity(i); else if (klik==r.id.buttontentang) {

2 A-2 Intent i = new Intent (MainActivity.this, tentang.class); startactivity(i); else if (klik==r.id.buttonbantuan) { Intent i = new Intent (MainActivity.this, bantuan.class); startactivity(i); Enkripsi_File.java package com.example.jessicatamara.myapplication4; /** * Created by JessicaTamara on 19/04/2017. import android.app.activity; import android.content.dialoginterface; import android.content.intent; import android.net.uri; import android.os.bundle; import android.support.v7.app.alertdialog; import android.support.v7.app.appcompatactivity; import android.util.log; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.textview; import android.widget.toast; import com.itextpdf.text.document; import com.itextpdf.text.documentexception; import com.itextpdf.text.font; import com.itextpdf.text.paragraph; import com.itextpdf.text.pdf.pdfreader; import com.itextpdf.text.pdf.pdfwriter; import com.itextpdf.text.pdf.parser.pdftextextractor; import java.io.file; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception; import java.io.outputstreamwriter; public class Enkripsi_File extends AppCompatActivity implements View.OnClickListener { Button choose, proses_double, proses_ttm, simpan; TextView lokasi_file; EditText kunci1, kunci2, kuncittm; String awal, hsl_ttm, hsl_double, namafile; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.enkripsi_file); lokasi_file = (TextView) findviewbyid(r.id.textviewisifile);

3 A-3 kuncittm = (EditText) findviewbyid(r.id.edittextinputkunci); kunci1 = (EditText) findviewbyid(r.id.edittextkunci1dtc); kunci2 = (EditText) findviewbyid(r.id.edittextkunci2dtc); choose = (Button) findviewbyid(r.id.buttonbrowseenk); choose.setonclicklistener(this); proses_double = (Button) findviewbyid(r.id.buttonenkdtc); proses_double.setonclicklistener(this); proses_ttm = (Button) findviewbyid(r.id.buttonenkttm); proses_ttm.setonclicklistener(this); simpan = (Button) findviewbyid(r.id.buttonsimpan); simpan.setonclicklistener(this); public void onclick(view v) { switch (v.getid()) { case R.id.buttonBrowseEnk: Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.settype("*"); //all files intent.addcategory(intent.category_openable); startactivityforresult(intent.createchooser(intent, "Select a File to Upload"), 0); catch (android.content.activitynotfoundexception ex) { Toast.makeText(Enkripsi_File.this, "Please install a File Manager.", Toast.LENGTH_SHORT).show(); break; case R.id.buttonEnkTtm: Long starttime = System.currentTimeMillis(); trithemius ttm = new trithemius(); hsl_ttm = ttm.enkripsi_ttm(awal, kuncittm.gettext().tostring()); Long endtime = System.currentTimeMillis(); Long totaltime = endtime - starttime; Toast.makeText(Enkripsi_File.this, hsl_ttm, Toast.LENGTH_LONG).show(); Toast.makeText(Enkripsi_File.this, "Enkripsi dengan Algoritma Trithemius Berhasil \nrunning Time:" + totaltime.tostring() + "ms", Toast.LENGTH_LONG).show(); break; case R.id.buttonEnkDTC: starttime = System.currentTimeMillis(); doublet db = new doublet(); hsl_double = db.enkripsi_double(hsl_ttm, kunci1.gettext().tostring(), kunci2.gettext().tostring()); endtime = System.currentTimeMillis(); totaltime = endtime - starttime; Toast.makeText(Enkripsi_File.this, hsl_double, Toast.LENGTH_LONG).show(); Toast.makeText(Enkripsi_File.this, "Enkripsi dengan Double Transposition Cipher Berhasil \nrunning Time:" + totaltime.tostring() + "ms", Toast.LENGTH_LONG).show(); break;

4 A-4 case R.id.buttonSimpan: AlertDialog.Builder builder = new AlertDialog.Builder(Enkripsi_File.this); builder.settitle("save"); builder.setmessage("masukkan Nama File"); // Use an EditText view to get user input. final EditText input = new EditText(Enkripsi_File.this); input.setid(0); builder.setview(input); builder.setpositivebutton("ok", new DialogInterface.OnClickListener() { whichbutton) { public void onclick(dialoginterface dialog, int namafile = input.gettext().tostring(); //Document doc = new Document(); namafile = "/mnt/sdcard/" + namafile+".pdf"; FileOutputStream(myFile); OutputStreamWriter(fOut); /* File myfile = new File(namafile); myfile.createnewfile(); FileOutputStream fout = new OutputStreamWriter myoutwriter = new myoutwriter.append(hsl_double); myoutwriter.close(); fout.close(); String print=""; Document document = new Document(); PdfWriter.getInstance(document, new FileOutputStream(namafile)); document.open(); for(int i=0; i<hsl_double.length()-1; i++) print += (int)hsl_double.charat(i) + " "; print += (int)hsl_double.charat(hsl_double.length()-1); document.add(new Paragraph(print)); document.close(); Toast.makeText(Enkripsi_File.this, "File Berhasil Disimpan", Toast.LENGTH_LONG).show(); /* FileOutputStream(file); File file = new File(namafile); FileOutputStream fout = new PdfWriter.getInstance(doc, fout);

5 A-5 //open the document doc.open(); Paragraph p1 = new Paragraph(hsl_double); Font parafont= new Font(Font.FontFamily.COURIER); p1.setalignment(paragraph.align_center); p1.setfont(parafont); //add paragraph to document doc.add(p1); e.getmessage()); e.getmessage()); ); catch (DocumentException de) { Log.e("PDFCreator", "DocumentException:" + de); catch (FileNotFoundException e) { Log.d("ooo", "File not found: " + catch (IOException e) { Log.d("ooo", "Error accessing file: " + catch (DocumentException e) { e.printstacktrace(); return; builder.setnegativebutton("cancel", new DialogInterface.OnClickListener() { { ); public void onclick(dialoginterface dialog, int which) return; builder.show(); break; String fileuri; public void onactivityresult(int requestcode, int resultcode, Intent resultdata) { if (requestcode == 0 && resultcode == Activity.RESULT_OK) { Uri uri = null; uri = resultdata.getdata(); fileuri = uri.getpath(); String parsedtext = ""; File ukuranfile = new File(fileuri); if ((ukuranfile.length() / 1024) <= 1024) {

6 A-6 parsedtext = ""; PdfReader reader = new PdfReader(fileuri); Integer n = reader.getnumberofpages(); for (int i = 0; i < n; i++) { parsedtext = parsedtext + PdfTextExtractor.getTextFromPage(reader, i + 1).trim() + "\n"; reader.close(); awal = parsedtext; lokasi_file.settext(fileuri); catch (Exception e) { Toast.makeText(getBaseContext(), "Harap Input file PDF", Toast.LENGTH_LONG).show(); lokasi_file.settext(""); else { Toast.makeText(getBaseContext(), "Ukuran Maksimal File 1MB", Toast.LENGTH_LONG).show(); lokasi_file.settext(""); catch (Exception e) { Toast.makeText(getBaseContext(), "Keterangan Error:" + e.getmessage(), Toast.LENGTH_LONG).show(); else { Toast.makeText(this, "Tidak ada file yang dipilih", Toast.LENGTH_LONG).show(); dekripsi_file.java package com.example.jessicatamara.myapplication4; /** * Created by JessicaTamara on 18/04/2017. import android.app.activity; import android.content.dialoginterface; import android.content.intent; import android.net.uri; import android.os.bundle; import android.os.environment; import android.support.v7.app.alertdialog; import android.support.v7.app.appcompatactivity; import android.util.log; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.textview; import android.widget.toast; import com.itextpdf.text.document; import com.itextpdf.text.documentexception; import com.itextpdf.text.paragraph; import com.itextpdf.text.pdf.pdfreader; import com.itextpdf.text.pdf.pdfwriter;

7 A-7 import com.itextpdf.text.pdf.parser.pdftextextractor; import java.io.bufferedreader; import java.io.file; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.filereader; import java.io.ioexception; import java.io.outputstreamwriter; import java.io.printwriter; public class dekripsi_file extends AppCompatActivity implements View.OnClickListener { Button choose, proses_double, proses_ttm, simpan; TextView lokasi_file; EditText kunci1, kunci2, kuncittm; String awal = "", hsl_dt, hsl_ttm, namafile; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.dekripsi_file); lokasi_file = (TextView) findviewbyid(r.id.textviewisifiledek); kuncittm = (EditText) findviewbyid(r.id.edittextinputkuncidek); kunci1 = (EditText) findviewbyid(r.id.edittextkunci1dtcdek); kunci2 = (EditText) findviewbyid(r.id.edittextkunci2dtcdek); choose = (Button) findviewbyid(r.id.buttonbrowsedek); choose.setonclicklistener(this); proses_double = (Button) findviewbyid(r.id.buttondekdtc); proses_double.setonclicklistener(this); proses_ttm = (Button) findviewbyid(r.id.buttondekttm); proses_ttm.setonclicklistener(this); simpan = (Button) findviewbyid(r.id.buttonsimpanfile); simpan.setonclicklistener(this); public void onclick(view v) { switch (v.getid()) { case R.id.buttonBrowseDek: Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.settype("*"); //all files intent.addcategory(intent.category_openable); startactivityforresult(intent.createchooser(intent, "Select a File to Upload"), 0); catch (android.content.activitynotfoundexception ex) { Toast.makeText(dekripsi_file.this, "Please install a File Manager.", Toast.LENGTH_SHORT).show(); break; case R.id.buttonDekDTC: Long starttime = System.currentTimeMillis(); doublet db = new doublet();

8 A-8 hsl_dt = db.dekripsi_double(awal, kunci1.gettext().tostring(), kunci2.gettext().tostring()); Long endtime = System.currentTimeMillis(); Long totaltime = endtime - starttime; Toast.makeText(dekripsi_file.this, hsl_dt, Toast.LENGTH_LONG).show(); Toast.makeText(dekripsi_file.this, "Dekripsi dengan Double TRansposition Cipher Berhasil \nrunning Time:" + totaltime.tostring() + "ms", Toast.LENGTH_LONG).show(); break; case R.id.buttonDekTtm: starttime = System.currentTimeMillis(); trithemius ttm = new trithemius(); hsl_ttm = ttm.dekripsi_ttm(hsl_dt, kuncittm.gettext().tostring()); endtime = System.currentTimeMillis(); totaltime = endtime - starttime; Toast.makeText(dekripsi_file.this, hsl_ttm, Toast.LENGTH_LONG).show(); Toast.makeText(dekripsi_file.this, "Dekripsi dengan Algoritma Trithemius Berhasil \nrunning Time:" + totaltime.tostring() + "ms", Toast.LENGTH_LONG).show(); break; case R.id.buttonSimpanFile: AlertDialog.Builder builder = new AlertDialog.Builder(dekripsi_file.this); builder.settitle("save"); builder.setmessage("masukkan Nama File"); // Use an EditText view to get user input. final EditText input = new EditText(dekripsi_file.this); input.setid(0); builder.setview(input); builder.setpositivebutton("ok", new DialogInterface.OnClickListener() { whichbutton) { /* FileOutputStream(myFile); OutputStreamWriter(fOut); public void onclick(dialoginterface dialog, int namafile = input.gettext().tostring(); //Document doc = new Document(); namafile = "/mnt/sdcard/"+namafile+".pdf"; File myfile = new File(namafile); myfile.createnewfile(); FileOutputStream fout = new OutputStreamWriter myoutwriter = new myoutwriter.append(hsl_ttm); myoutwriter.close(); fout.close(); Document document = new Document(); PdfWriter.getInstance(document, new

9 A-9 FileOutputStream(namafile)); document.open(); document.add(new Paragraph(hsl_ttm)); document.close(); Toast.makeText(dekripsi_file.this, "File Berhasil Disimpan", Toast.LENGTH_LONG).show(); FileOutputStream(file); /* File file = new File(namafile); FileOutputStream fout = new PdfWriter.getInstance(doc, fout); //open the document doc.open(); Paragraph p1 = new Paragraph(hsl_double); Font parafont= new Font(Font.FontFamily.COURIER); p1.setalignment(paragraph.align_center); p1.setfont(parafont); //add paragraph to document doc.add(p1); catch (DocumentException de) { Log.e("PDFCreator", "DocumentException:" + de); Toast.makeText(dekripsi_file.this, "File Berhasil Disimpan", Toast.LENGTH_LONG).show(); e.getmessage()); e.getmessage()); ); catch (FileNotFoundException e) { Log.d("ooo", "File not found: " + catch (IOException e) { Log.d("ooo", "Error accessing file: " + catch (DocumentException e) { e.printstacktrace(); return; builder.setnegativebutton("cancel", new DialogInterface.OnClickListener() { { ); public void onclick(dialoginterface dialog, int which) return; builder.show();

10 A-10 break; String fileuri; public void onactivityresult(int requestcode, int resultcode, Intent resultdata) { if (requestcode == 0 && resultcode == Activity.RESULT_OK) { Uri uri = null; uri = resultdata.getdata(); fileuri = uri.getpath(); String parsedtext = ""; parsedtext = ""; PdfReader reader = new PdfReader(fileuri); Integer n = reader.getnumberofpages(); for (int i = 0; i < n; i++) { parsedtext = parsedtext + PdfTextExtractor.getTextFromPage(reader, i + 1).trim() + "\n"; reader.close(); String[] temp = parsedtext.split("\\s+"); awal=""; for(int i=0; i<temp.length; i++) awal+=(char)integer.parseint(temp[i]); Toast.makeText(this, "File Dibuka", Toast.LENGTH_LONG).show(); Toast.makeText(this, parsedtext, Toast.LENGTH_LONG).show(); catch (IOException e) { e.printstacktrace(); lokasi_file.settext(fileuri); /* String parsedtext=""; PdfReader reader = new PdfReader(fileuri); Integer n = reader.getnumberofpages(); Toast.makeText(dekripsi_file.this, fileuri + " " + n.tostring(), Toast.LENGTH_SHORT).show(); for (int i = 0; i <n ; i++) { parsedtext = parsedtext+ PdfTextExtractor.getTextFromPage(reader, i + 1).trim()+"\n"; reader.close(); awal = parsedtext; catch (Exception e) { System.out.println(e);

11 A-11 void methodwritestorage(string data) { String namafileoutput = Environment.getExternalStorageDirectory() + "/Hasil Dekrisi Jeje.txt"; PrintWriter pw = new PrintWriter(namaFileOutput); pw.println(data); pw.close(); //AlertDialog dialog=new AlertDialog.Builder(this).create(); //dialog.setmessage("hasil Enkripsi : " + data); //dialog.show(); catch (FileNotFoundException e) { AlertDialog dialog = new AlertDialog.Builder(this).create(); dialog.setmessage("error menulis data!\nketerangan error:\n" + e.tostring()); dialog.show(); trithemius.java package com.example.jessicatamara.myapplication4; /** * Created by JessicaTamara on 18/05/2017. public class trithemius { String index = "abcdefghiklmnopqrstuwxyzjvabcdefghijklmnopqrstuvwxyz "+' '+".,!"; char[] arrayindex= index.tochararray(); private char[] createkey(string key, String plaintext){ char[] arrayplaintext = plaintext.tochararray(); char[] arraykey = new char[arrayplaintext.length]; char[] filler = key.tochararray(); int flag=0; for (int i=0,j=0; i<arraykey.length; i++){ arraykey[i]=filler[j]; j++; if (j==filler.length){ flag=1; if (flag==1){ j=0; flag=0; return arraykey; private int getindex(char character){ for(int i=0; i<index.length(); i++){ if (character==arrayindex[i]){ return i; return -1;

12 A-12 private char getcharacter(int indext){ for(int i=0; i<index.length(); i++){ if (i==indext){ return arrayindex[i]; return '0'; public String enkripsi_ttm(string plaintext, String key){ char[]arraykey = createkey(key, plaintext); char[]arrayplaintext = plaintext.tochararray(); char[]arrayciphertext = new char[arrayplaintext.length]; int p,k,c; for (int i=0; i<arrayplaintext.length;i++){ if(getindex(arrayplaintext[i])==-1){ arrayciphertext[i]=arrayplaintext[i]; continue; p= getindex(arrayplaintext[i]); k= getindex(arraykey[i]); c= (p+k)%index.length(); arrayciphertext[i]=getcharacter(c); String hasil = new String(arrayciphertext); return hasil; public String dekripsi_ttm(string ciphertext, String key){ char[]arraykey = createkey(key, ciphertext); char[]arrayciphertext = ciphertext.tochararray(); char[]arrayplaintext = new char[arrayciphertext.length]; int p,k,c; for (int i=0; i<arrayciphertext.length;i++){ if(getindex(arrayciphertext[i])==-1){ arrayplaintext[i]=arrayciphertext[i]; continue; c= getindex(arrayciphertext[i]); k= getindex(arraykey[i]); p= (c-k); if(p<0) { p=p+index.length(); else{ p=p%index.length(); arrayplaintext[i]=getcharacter(p); String hasil = new String(arrayplaintext); return hasil;

13 A-13 doublet.java package com.example.jessicatamara.myapplication4; /** * Created by JessicaTamara on 18/05/2017. public class doublet { public Integer[] urutan(string key) { char[] kk1 = key.tochararray(); Integer[] kk2 = new Integer[kk1.length]; for (int i = 0; i < kk2.length; i++) { kk2[i] = i; for (int i = 0; i < kk1.length; i++) for (int j = 0; j < kk1.length; j++) if (kk1[i] < kk1[j]) { char ctemp = kk1[i]; kk1[i] = kk1[j]; kk1[j] = ctemp; int itemp = kk2[i]; kk2[i] = kk2[j]; kk2[j] = itemp; return kk2; public String enkripsi_double(string plain, String key1, String key2) { String k1 = key1, k2 = key2, cipher1 = "", cipher2 = ""; Integer i1 = (int) Math.ceil(plain.length() * 1.0 / k1.length()); Integer j1 = k1.length(); char[][] tabel1 = new char[i1][j1]; int k = 0; for (int i = 0; i < i1; i++) for (int j = 0; j < j1; j++) { if (k < plain.length()) tabel1[i][j] = plain.charat(k); else tabel1[i][j] = 'Ā'; k++; Integer[] runtutan = urutan(k1); for (int i = 0; i < runtutan.length; i++) for (int j = 0; j < i1; j++) cipher1 += tabel1[j][runtutan[i]]; Integer i2 = (int) Math.ceil(cipher1.length() * 1.0 / k2.length()); Integer j2 = k2.length(); char[][] tabel2 = new char[i2][j2]; k = 0; for (int i = 0; i < i2; i++) for (int j = 0; j < j2; j++) { if (k < cipher1.length()) tabel2[i][j] = cipher1.charat(k);

14 A-14 else tabel2[i][j] = 'Ī'; k++; runtutan = urutan(k2); for (int i = 0; i < runtutan.length; i++) for (int j = 0; j < i2; j++) cipher2 += tabel2[j][runtutan[i]]; return cipher2; { public String dekripsi_double(string cipher, String key1, String key2) String k1 = key1, k2 = key2, plain1 = "", plain2 = ""; Integer i1 = (cipher.length() / k2.length()); Integer j1 = k2.length(); char[][] tabel1 = new char[i1][j1]; int k = 0; Integer[] runtutan = urutan(k2); for (int i = 0; i < runtutan.length; i++) for (int j = 0; j < i1; j++) { tabel1[j][runtutan[i]] = cipher.charat(k); k++; for (int i = 0; i < i1; i++) for (int j = 0; j < j1; j++) plain1 += tabel1[i][j]; String temp = ""; for (int i = 0; i < plain1.length(); i++) if (plain1.charat(i)!= 'İ') temp += plain1.charat(i); plain1 = temp; Integer i2 = (plain1.length() / k1.length()); Integer j2 = k1.length(); char[][] tabel2 = new char[i2][j2]; k = 0; runtutan = urutan(k1); for (int i = 0; i < runtutan.length; i++) for (int j = 0; j < i2; j++) { tabel2[j][runtutan[i]] = plain1.charat(k); k++; for (int i = 0; i < i2; i++) for (int j = 0; j < j2; j++) plain2 += tabel2[i][j]; temp = ""; for (int i = 0; i < plain2.length(); i++) if (plain2.charat(i)!= 'Ā')

15 A-15 temp += plain2.charat(i); plain2 = temp; return plain2; tentang.java package com.example.jessicatamara.myapplication4; /** * Created by JessicaTamara on 06/04/2017. import android.os.bundle; import android.support.v7.app.appcompatactivity; import android.webkit.webview; public class tentang extends AppCompatActivity { protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.tentang); String text1 = "Nama : Jessica"; String text2 = "Nim : "; String text3 = "Stambuk : 2013"; String text4 = "Judul : Implementasi Super Enkripsi dengan Algoritma Trithemius dan Double Transposition Cipher dalam Pengamanan File PDF Berbasis Android"; String text5 = "Program Studi S1 Ilmu Kompuer Fakultas Ilmu Komputer dan Teknologi Informasi "; String text6 = "2017"; WebView webview = (WebView) findviewbyid(r.id.webview2); webview.loaddata("" + text1 + "" + "" + text2 + "" + "" + text3 + "" + "" + text4 + "" + "" + text5 + "" + "" + text6 + "", "text/html", "UTF-8"); bantuan.java package com.example.jessicatamara.myapplication4; /**

16 A-16 * Created by JessicaTamara on 18/05/2017. import android.os.bundle; import android.support.v7.app.appcompatactivity; import android.webkit.webview; public class bantuan extends AppCompatActivity { protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.bantuan); String text1 = "1.Ukuran maksimal file adalah 1MB"; String text2 = "2.Disarankan menginputkan tiga buat password yang berbeda guna meningkatkan keamanan file"; String text3 = "3.Password yang diinputkan pada saat proses enkripsi harus sama dengan password yang diinputkan pada saat proses dekripsi."; ""+ ""+ "", WebView webview = (WebView)findViewById(R.id.webview); webview.loaddata("" + text1 + "" + text2 + "" + text3 + "text/html", "UTF-8");

B-1 CURRICULUM VITAE DATA PRIBADI Nama Lengkap : Jessica Jenis Kelamin : Perempuan Tempat, Tanggal Lahir : Medan, 18 April 1995 Alamat : Jl. Cengkeh 3 No. 3 Perumnas Simalingkar Alamat Orangtua : Jl.

17 B-1 CURRICULUM VITAE DATA PRIBADI Nama Lengkap : Jessica Jenis Kelamin : Perempuan Tempat, Tanggal Lahir : Medan, 18 April 1995 Alamat : Jl. Cengkeh 3 No. 3 Perumnas Simalingkar Alamat Orangtua : Jl. Cengkeh 3 No. 3 Perumnas Simalingkar Agama : Kristen No. Hp : jessicasinaga5@gmail.com Pendidikan Terakhir : Medan, Fakultas Ilmu Komputer dan Teknologi Informasi Jurusan S1 Ilmu Komputer PENDIDIKAN FORMAL : S1 Ilmu Komputer, Medan : SMA Santo Thomas 1 Medan : SMP Budi Murni 2 Medan : SD Budi Murni 2 Medan PENGALAMAN ORGANISASI DAN KEGIATAN ILMIAH Anggota Departemen Dana dan Usaha Ikatan Mahasiswa S1 Ilmu Komputer (IMILKOM), Bendahara Umum Ikatan Mahasiswa S1 Ilmu Komputer (IMILKOM),

Universitas Sumatera Utara A-1 LISTING PROGRAM. Menu Enkripsi. package com.example.program;

Universitas Sumatera Utara A-1 LISTING PROGRAM. Menu Enkripsi. package com.example.program; A-1 LISTING PROGRAM Menu Enkripsi package com.example.program; import java.io.file; import java.io.fileinputstream; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception;