import javax.crypto.*;import javax.crypto.spec.*;import java.io.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class krypteerimine extends Applet implements ActionListener{

	Button nupp1=new Button("Crypt");
	   Button nupp2=new Button("DeCrypt");
	      Panel p1 = new Panel();
	         Panel p2 = new Panel();
	            TextField failinimi1 = new TextField("andmefail");
	               TextField failinimi2 = new TextField("krüptofail");
	               
	                  String fail1="";
	                     String fail2="";
	                        
	                        public krypteerimine(){
	                        	nupp1.addActionListener(this);
	                        		nupp2.addActionListener(this);
	                        			p1.add(failinimi1);
	                        				p1.add(nupp1);
	                        					p2.add(failinimi2);
	                        						p2.add(nupp2);
	                        							add(p1);
	                        								add(p2);
	                        								}
	                        								
	                        								public void actionPerformed(ActionEvent e){
	                        								
	                        								String kiri = e.getActionCommand();
	                        								fail1=failinimi1.getText();
	                        								fail2=failinimi2.getText();
	                        								
	                        								if (kiri.equals("Crypt")) {
	                        								
	                        								
	                        								try{
	                        								
	                        								  InputStream sisse=new FileInputStream(fail1);
	                        								      
	                        								          int nr=sisse.read();
	                        								              int arv=0;
	                        								                  
	                        								                      while(nr!=-1){       
	                        								                              nr=sisse.read();
	                        								                                      arv=arv+1;            
	                        								                                          }
	                        								                                             System.out.println(arv);
	                        								                                                byte[] failibaidid=new byte[arv];
	                        								                                                    
	                        								                                                       InputStream sisse2=new FileInputStream(fail1);
	                        								                                                           int nr2=sisse2.read();
	                        								                                                               
	                        								                                                                   for (int i=0; i<arv; i++){
	                        								                                                                       nr2=sisse2.read();
	                        								                                                                           failibaidid[i]=(byte)(nr2);
	                        								                                                                               
	                        								                                                                                   }
	                        								                                                                                       
	                        								                                                                                           byte[] votmebaidid=new byte[16];    
	                        								                                                                                               for(int i=0; i<16; i++){      votmebaidid[i]=(byte)0xFF;    }    SecretKey voti=SecretKeyFactory.getInstance("DES").generateSecret(      new DESKeySpec(votmebaidid)    );    Cipher kodeerija=Cipher.getInstance("DES");    kodeerija.init(Cipher.ENCRYPT_MODE, voti);    CipherOutputStream salavaljund=new CipherOutputStream(
	                        								                                                                                                     new FileOutputStream(fail2), kodeerija
	                        								                                                                                                         );
	                        								                                                                                                             salavaljund.write(failibaidid);
	                        								                                                                                                                 salavaljund.close();
	                        								                                                                                                                 
	                        								                                                                                                                 }catch(Exception viga){viga.printStackTrace();}
	                        								                                                                                                                 
	                        								                                                                                                                         } 
	                        								                                                                                                                                 //if lõpeb
	                        								                                                                                                                                 
	                        								                                                                                                                                 if (kiri.equals("DeCrypt")) {
	                        								                                                                                                                                 
	                        								                                                                                                                                 
	                        								                                                                                                                                 try{
	                        								                                                                                                                                 
	                        								                                                                                                                                 byte[] votmebaidid=new byte[16];
	                        								                                                                                                                                     for(int i=0; i<16; i++){
	                        								                                                                                                                                           votmebaidid[i]=(byte)0xFF;
	                        								                                                                                                                                               }
	                        								                                                                                                                                                   SecretKey voti=SecretKeyFactory.getInstance("DES").generateSecret(
	                        								                                                                                                                                                         new DESKeySpec(votmebaidid)
	                        								                                                                                                                                                             );
	                        								                                                                                                                                                                 Cipher kodeerija=Cipher.getInstance("DES");
	                        								                                                                                                                                                                     kodeerija.init(Cipher.DECRYPT_MODE, voti);
	                        								                                                                                                                                                                         CipherInputStream salasisend=new CipherInputStream(
	                        								                                                                                                                                                                               new FileInputStream(fail2), kodeerija
	                        								                                                                                                                                                                                   );
	                        								                                                                                                                                                                                       int pikkus=salasisend.read();
	                        								                                                                                                                                                                                           
	                        								                                                                                                                                                                                               FileOutputStream valja=new FileOutputStream(fail1);
	                        								                                                                                                                                                                                                   
	                        								                                                                                                                                                                                                       while (pikkus!=-1){
	                        								                                                                                                                                                                                                           pikkus=salasisend.read();
	                        								                                                                                                                                                                                                               
	                        								                                                                                                                                                                                                                   valja.write(pikkus);
	                        								                                                                                                                                                                                                                       }
	                        								                                                                                                                                                                                                                           valja.close();
	                        								                                                                                                                                                                                                                           
	                        								                                                                                                                                                                                                                           
	                        								                                                                                                                                                                                                                           }catch(Exception viga){viga.printStackTrace();}
	                        								                                                                                                                                                                                                                                   
	                        								                                                                                                                                                                                                                                           }}
	                        								                                                                                                                                                                                                                                           
	                        								                                                                                                                                                                                                                                           
	                        								                                                                                                                                                                                                                                           public static void main(String[] argumendid){
	                        								                                                                                                                                                                                                                                           
	                        								                                                                                                                                                                                                                                             Frame f=new Frame("Krüpteerimine");
	                        								                                                                                                                                                                                                                                               krypteerimine p=new krypteerimine();
	                        								                                                                                                                                                                                                                                                 f.add(p);
	                        								                                                                                                                                                                                                                                                   f.setSize(300, 300);
	                        								                                                                                                                                                                                                                                                     f.setVisible(true);
	                        								                                                                                                                                                                                                                                                      }
	                        								                                                                                                                                                                                                                                                      
	                        								                                                                                                                                                                                                                                                      }