Iki Carane Nggawe Enkripsi Nang Java

Iki ngunu code kanggo nggawe Enkripsi MD5 nang Java.

Wes, ora usah kakean ngetik (aku wes kesel soal e).

Langsung ae simak en penamapakan e nang nisor iki.

Lha iki lho penampakan e.

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import java.io.BufferedWriter;
import java.io.PrintWriter;

import java.io.FileWriter;
import javax.swing.JOptionPane;
import javax.swing.*;
import java.io.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.filechooser.FileFilter;

public class ta_java extends javax.swing.JFrame {
public ta_java() {
initComponents();
this.setTitle("Untitled - NOTES");
fc = new JFileChooser();
fc.addChoosableFileFilter(new jenisFile(EXT));
fc.addChoosableFileFilter(new jenisFile(EXT2));
fc.setAcceptAllFileFilterUsed(false);
fileBaru = true;
}
JFileChooser fc;
File file;
boolean fileBaru;
final String[] EXT = { ".csv" };
final String[] EXT2 = { ".txt", ".java" };

public String text,namafiletext;
private void msg(String pesan) {
JOptionPane.showMessageDialog(this,pesan,"Informasi", JOptionPane.INFORMATION_MESSAGE);
}
private boolean okToReplace() {
return (JOptionPane.showConfirmDialog(this, "File "+file.getName()+" Sudah Ada\n"+ "Akan Ditimpa ?",
"Peringatan",JOptionPane.YES_NO_OPTION)==0) ;
}

class jenisFile extends FileFilter {
private String[] s;
jenisFile(String[] sArg) {
s = sArg;
}
public boolean accept(File fArg) {
if (fArg.isDirectory())
return true;
for (int i = 0; i < s.length; ++i)
if (fArg.getName().toLowerCase().indexOf(s[i].toLowerCase()) > 0)
return true;
return false;
}
public String getDescription() {
String tmp = "";
for (int i = 0; i < s.length; ++i)
tmp += "*" + s[i] + " ";
return tmp;
}
}
private void SimpanFile() {
PrintWriter pw = null;
try {
pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
} catch (IOException e) {
msg("Gagal Simpan File : '" + file.getName());
return;
}
pw.print(isi1.getText());
pw.close();
this.setTitle(file.getName()+" - NOTES" );
fileBaru = false;
}

class Enskripsimd5 {

private String convertToHex(byte[] data) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < data.length; i++) {
int halfbyte = (data[i] >>> 4) & 0x0F;
int two_halfs = 0;
do {
if ((0 <= halfbyte) && (halfbyte <= 9)) {
buf.append((char) ('0' + halfbyte));
} else {
buf.append((char) ('a' + (halfbyte - (int) geser.getValue())));
}
halfbyte = data[i] & 0x0F;
} while (two_halfs++ < 1);
}
return buf.toString();
}
public String MD5(String text)
throws NoSuchAlgorithmException, UnsupportedEncodingException {
MessageDigest md;
md = MessageDigest.getInstance("MD5");
byte[] md5hash = new byte[32];
md.update(text.getBytes("iso-8859-1"), 0, text.length());
md5hash = md.digest();
return convertToHex(md5hash);

}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {
new ta_java().setVisible(true);
}
});
}
private String readFile(File file){
String result="";
try{
FileInputStream fis=new FileInputStream(file);
BufferedInputStream bis=new BufferedInputStream(fis);
DataInputStream dis=new DataInputStream(bis);
while(dis.available()!=0){
result +=dis.readLine()+"\n";
}
}
catch(FileNotFoundException e){
}
catch(IOException e){
}
return result;
}
private void bukaActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser fc= new JFileChooser();
JFrame jf= new JFrame();
int ret= fc.showOpenDialog(jf.add(fc));
if(ret==JFileChooser.APPROVE_OPTION) {
File file=fc.getSelectedFile();
text=readFile(file);
isi1.setText(text);
namafiletext=file.getPath().toString();
nama_file.setText(namafiletext);
}
}
private void simpanActionPerformed(java.awt.event.ActionEvent evt) {
if (fileBaru)
simpan.doClick();
else
SimpanFile();
}
private void simpan_sbgActionPerformed(java.awt.event.ActionEvent evt) {
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION){
file = fc.getSelectedFile();
if (!file.exists() || okToReplace())
SimpanFile();
}
}
private void baruActionPerformed(java.awt.event.ActionEvent evt) {
isi1.setText("");
isi1.requestFocus();
this.setTitle("Untitled - NOTES");
fileBaru = true;
}
private void keluarActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}

private void ubahActionPerformed(java.awt.event.ActionEvent evt) {
isi1.setEnabled(true);
}
private void md5_1ActionPerformed(java.awt.event.ActionEvent evt) {
save2.setEnabled(true);
password2.setEnabled(true);
pass2.setEnabled(true);
isi2.setEnabled(true);
saveas2.setEnabled(true);
md5_2.setEnabled(true);
random2.setEnabled(true);

Enskripsimd5 md5 = new Enskripsimd5();
try {
isi2.setText(md5.MD5(isi1.getText()));

} catch (NoSuchAlgorithmException ex) {
Logger.getLogger(ta_java.class.getName()).log(Level.SEVERE, null, ex);
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(ta_java.class.getName()).log(Level.SEVERE, null);
}
}
private void random1ActionPerformed(java.awt.event.ActionEvent evt) {
save2.setEnabled(true);
password1.setEnabled(true);
pass2.setEnabled(true);
isi2.setEnabled(true);
saveas2.setEnabled(true);
md5_2.setEnabled(true);
random2.setEnabled(true);
String randomKey = "";
double randomNumber;
for (int i = 0; i < isi1.getText().length(); i++) {
randomNumber = Math.random() * 25 + 65;
randomKey = randomKey + (char) randomNumber;
}

isi2.setText(randomKey);
}
private void save2ActionPerformed(java.awt.event.ActionEvent evt) {
if (fileBaru) {
saveas2.doClick();
} else {
SimpanFile();
}
}
private void saveas2ActionPerformed(java.awt.event.ActionEvent evt) {
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
file = fc.getSelectedFile();
if (!file.exists() || okToReplace()) {
SimpanFile();
}
}
}
private void random2ActionPerformed(java.awt.event.ActionEvent evt) {
String randomKey = "";
double randomNumber;
for (int i = 0; i < isi2.getText().length(); i++) {
randomNumber = Math.random() * 25 + 65;
randomKey = randomKey + (char) randomNumber;
}

isi1.setText(randomKey);
}
private void password1ActionPerformed(java.awt.event.ActionEvent evt) {
if (pass2.getText().equals(pass1.getText())) {
msg("password anda benar : " + pass1.getText());
isi1.setText(isi2.getText());
} else {
msg("password anda salah : " + pass1.getText());
}
}
private void password2ActionPerformed(java.awt.event.ActionEvent evt) {
if (pass1.getText().equals(pass2.getText())) {
msg("password anda benar : " + pass2.getText());
isi2.setText(isi1.getText());
} else {
msg("password anda salah : " + pass2.getText());
}
}
Program iki ngunu, kanggo nyamarno PASSWORD.
Maksud e ngene loh, saumpomo aku duwe PASSWORD = JavaItuOke, ngko lek di Enkripsi dadine ngene kbwbjufplp.
Wes mudeng kan ??


Sing penasaran ndang nyoba, ojo mung diwoco.
Ben barokah ngko ilmu ne.
Wes ya semene ae, suwun wes gelem mampir.
#Sumber