ENCRYPTION TECHNIQUE

import java.awt.*;
import java.awt.event.*;
import javax.swing.text.*;
import java.util.zip.*;
import javax.swing.*;
import java.io.*;
import javax.swing.border.*;
public class SingleFileEncrypt extends JFrame implements ActionListener{
 JButton b1,b2,b3,b4,close;
 File f;
 Font font;
 JOptionPane op=new JOptionPane();
 String fname="";
 FileInputStream fis;
 JFileChooser fc;
 DeflaterOutputStream dos;
 int key=0;
 FileOutputStream fos;
 String ext="";
 InflaterInputStream iis;
 String output="";
 SingleFileEncrypt(){
 
ImageIcon b1i=new ImageIcon("E.gif");
 ImageIcon b2i=new ImageIcon("D.gif");
 b2=new JButton("Decrypt",b2i);
 ImageIcon img2=new ImageIcon("java.gif");
 b3=new JButton("",img2);
 ImageIcon img3=new ImageIcon("brain.gif");
 ImageIcon img4=new ImageIcon("NLogo.gif");
 b1=new JButton("Encrypt",img3);
 b4=new JButton("",img4);
 close=new JButton("Close Window");
 fc=new JFileChooser();
 b1.setBackground(Color.green);
 b2.setBackground(Color.green);
 Container c=getContentPane();
 op.showMessageDialog(this,"Lets Protect Your Data...........");
 op.showMessageDialog(this,"By Mr.Nanddeswar(MCA)");
 font=new Font("times new roman",Font.BOLD,33);
 c.setLayout(null);
 b1.setBounds(10,10,300,200);
 b2.setBounds(600,10,300,200);
 b4.setBounds(10,620,300,150);
 b3.setBounds(860,620,120,150);
 close.setBounds(650,620,100,50);
 b1.setFont(font);
 b2.setFont(font);
 b3.setFont(font);
 b4.setFont(font);
 close.setFont(font);
 c.add(b1);c.add(b2);c.add(b3);c.add(b4);c.add(close);
 b1.addActionListener(this);
 b2.addActionListener(this);
 b3.addActionListener(this);
 b4.addActionListener(this);
 close.addActionListener(this);
 }
 public void actionPerformed(ActionEvent ae){
 Object o=ae.getSource();
 if(o==b1){
 int n=fc.showOpenDialog(this);
 if(n==JFileChooser.APPROVE_OPTION){
 f=fc.getSelectedFile();
 try{
 try{
 key=Integer.parseInt(op.showInputDialog("Enter Key:"));
 }catch(NumberFormatException ne){
 key=2;
 op.showMessageDialog(this,"The default KEY is used");
 }
 fis=new FileInputStream(f);
 output=op.showInputDialog(this,"Enter the Output Encrypted file Name");
 if(output.equals(""))
 {
 output="Default";
 op.showMessageDialog(this,"The Default File Name is used");
 }
 ext=op.showInputDialog("Enter extention");
 if(!ext.equals(""))
 fos=new FileOutputStream(output+"."+ext);
 else
 {
 fos=new FileOutputStream(output+".exe");
 op.showMessageDialog(this,"File created with Default extension");
 }
 
dos=new DeflaterOutputStream(fos);
 int ed;
 while((ed=fis.read())!=-1) dos.write(ed+key);
 fis.close();dos.close();fis.close();
 op.showMessageDialog(this,"Encryption Successfully Completed");
 op.showMessageDialog(this,"Encrypted File will be placed at where the project file is existed ");
 ext="";
 output="";
 }catch(Exception e){e.printStackTrace();}
 }
 }
 if(o==b4){
 
 op.showMessageDialog(this,"Nandu Logo");
 }
 if(o==b2){
 int n=fc.showOpenDialog(this);
 if(n==JFileChooser.APPROVE_OPTION){
 f=fc.getSelectedFile();
 try{
 fis=new FileInputStream(f);
 try{
 key=Integer.parseInt(op.showInputDialog("Enter Key:"));
 }catch(NumberFormatException ne){
 key=2;
 op.showMessageDialog(this,"The default KEY is used");
 }
 iis=new InflaterInputStream(fis);
 output=op.showInputDialog(this,"Enter output Decrypted file name");
 if(output.equals(""))
 {
 output="Default";
 op.showMessageDialog(this,"The Default File Name is used");
 }
 ext=op.showInputDialog("Enter extention");
 if(!ext.equals(""))
 fos=new FileOutputStream(output+"."+ext);
 else
 {
 fos=new FileOutputStream(output+".txt");
 op.showMessageDialog(this,"File created with Default extension");
 }
 int dd;
 while((dd=iis.read())!=-1) fos.write(dd-key);
 fis.close();iis.close();fos.close();
 op.showMessageDialog(this,"Decryption Successfully Completed");
 op.showMessageDialog(this,"Decrypted File will be placed at where the project file is existed ");
 ext="";
 output="";
 }catch(Exception e){e.printStackTrace();}
 }
 }
 if(o==b3){
 
 op.showMessageDialog(this,"Java Logo");
 }
 
if(o==close){
 
 this.dispose();
 }
 }
 
}
//end of file

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class FileEncryptDecrypt extends JFrame implements ActionListener{
 
JButton b1,b2,b3,b4;
 Font font;
 JOptionPane op=new JOptionPane();
 
FileEncryptDecrypt(){
 
ImageIcon b1i=new ImageIcon("E.gif");
 ImageIcon b2i=new ImageIcon("D.gif");
 b2=new JButton("Secure All Files",b2i);
 ImageIcon img2=new ImageIcon("java.gif");
 b3=new JButton("",img2);
 ImageIcon img3=new ImageIcon("brain.gif");
 ImageIcon img4=new ImageIcon("NLogo.gif");
 b1=new JButton("Secure One File",img3);
 b4=new JButton("",img4);
 b1.setBackground(Color.green);
 b2.setBackground(Color.green);
 
Container c=getContentPane();
 op.showMessageDialog(this,"Lets Protect Your Data...........");
 op.showMessageDialog(this,"By Mr.Nanddeswar(MCA)");
 font=new Font("times new roman",Font.BOLD,22);
 c.setLayout(null);
 b1.setBounds(10,10,400,200);
 b2.setBounds(600,10,350,200);
 b4.setBounds(10,620,300,150);
 b3.setBounds(860,620,120,150);
 b1.setFont(font);
 b2.setFont(font);
 b3.setFont(font);
 b4.setFont(font);
 c.add(b1);c.add(b2);c.add(b3);c.add(b4);
 b1.addActionListener(this);
 b2.addActionListener(this);
 b3.addActionListener(this);
 b4.addActionListener(this);
 
}
 public void actionPerformed(ActionEvent ae){
 Object o=ae.getSource();
 if(o==b1){
 
SingleFileEncrypt ne=new SingleFileEncrypt();
 ne.setTitle("Secure One File");
 ne.setSize(1000,800);
 ne.setVisible(true);
 //ne.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
 
if(o==b2){
 
MultipleFilesEncrypt nv=new MultipleFilesEncrypt();
 nv.setTitle("Secure All Files");
 nv.setSize(1000,800);
 nv.setVisible(true);
 //nv.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
 
if(o==b3){
 op.showMessageDialog(this,"Java Logo");
 }
 
if(o==b4){
 op.showMessageDialog(this,"Nandu Logo");
 }
 }
 
public static void main(String ar[])throws Exception{
 
FileEncryptDecrypt ned=new FileEncryptDecrypt();
 ned.setTitle("Nandu Experiment");
 ned.setSize(1000,800);
 ned.setVisible(true);
 ned.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
}//end of file