Aes.java

package FirstProject;
import java.awt.*;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.xml.bind.DatatypeConverter;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.border.LineBorder;
import javax.swing.filechooser.FileNameExtensionFilter;
public class Aes implements ActionListener
{
	Label l,l1,l2,l3,l4;
	JLabel lblNewLabel;
	TextArea ta;
	TextField t,t1,t2;
	JButton b1,b11,b111,b2,b3,b4,btnUpload;
	JFrame f;
	File file;
	BufferedReader br=null;
	 BufferedWriter wr=null;
	private File f1,k;
	String name,inputMessage1;
	byte[] cipherText,cipherText1;
	SecretKey secKey,secKey1;
	Aes()
	{
		f=new JFrame();
		f.setContentPane(new JLabel(new ImageIcon("D:\\ead.jpg")));
		
		l=new Label ("     TEXT ENCRYPTION ");
    	l.setBounds(70,30,200,50);
		f.add(l);
		
		l.setBackground(Color.black);
		
		Font font = new Font("Times New Roman", Font.BOLD, 16);
		l.setFont(font);
		l.setForeground(Color.white);
		
		l2=new Label ("     FILE ENCRYPTION ");
    	l2.setBounds(500,30,200,50);
		f.add(l2);
		
		l2.setBackground(Color.black);
		
		Font font1 = new Font("Times New Roman", Font.BOLD, 16);
		l2.setFont(font1);
		l2.setForeground(Color.white);
		
		l3=new Label(" FILE NAME ");
		l3.setBounds(400,140,100,30);
		f.add(l3);
		
		l3.setBackground(Color.black);
		
		Font fl3 = new Font("Times New Roman", Font.BOLD, 12);
		l3.setFont(fl3);
		l3.setForeground(Color.white);
		
		t1=new TextField();
		t1.setBounds(520,140,170,30);
		f.add(t1);
		t1.setBackground(Color.black);
		t1.setForeground(Color.white);
		
		/*b2=new JButton(" BROWSE ");
		b2.setBounds(580,190,100,30);
		f.add(b2);
		
		b2.setBackground(Color.black);
		f.add(b2);
		
		Font fb2 = new Font("Times New Roman", Font.BOLD, 12);
		b2.setFont(fb2);
		b2.setForeground(Color.white);
		
		b2.addActionListener(this);*/
		
		l1=new Label(" SIMPLE DATA ");
		l1.setBounds(30,140,130,30);
		f.add(l1);
		
		l1.setBackground(Color.black);
		
		Font fl1 = new Font("Times New Roman", Font.BOLD, 12);
		l1.setFont(fl1);
		l1.setForeground(Color.white);
		
		ta=new TextArea();
		ta.setBounds(170,120,170,180);
		f.add(ta);
		ta.setBackground(Color.black);
		ta.setForeground(Color.white);
		
		l2=new Label(" PUBLIC KEY ");
		l2.setBounds(30,320,110,30);
		f.add(l2);
		
		l2.setBackground(Color.black);
		
		Font fl2 = new Font("Times New Roman", Font.BOLD, 12);
		l2.setFont(fl1);
		l2.setForeground(Color.white);
		
		t=new TextField();
		t.setBounds(170,320,170,30);
		f.add(t);
		t.setBackground(Color.black);
		t.setForeground(Color.white);
		
		l4=new Label(" PUBLIC KEY ");
		l4.setBounds(400,320,110,30);
		f.add(l4);
		
		l4.setBackground(Color.black);
		
		Font fl4 = new Font("Times New Roman", Font.BOLD, 12);
		l4.setFont(fl4);
		l4.setForeground(Color.white);
		
		t2=new TextField();
		t2.setBounds(520,320,170,30);
		f.add(t2);
		t2.setBackground(Color.black);
		t2.setForeground(Color.white);
		
		b3=new JButton(" DECRYPT ");
		b3.setBounds(580,370,100,30);
		f.add(b3);
		
		b3.setBackground(Color.black);
		f.add(b3);
		
		Font fb31 = new Font("Times New Roman", Font.BOLD, 12);
		b3.setFont(fb31);
		b3.setForeground(Color.white);
		
		b4=new JButton(" ENCRYPT ");
		b4.setBounds(430,370,100,30);
		f.add(b4);
		
		b4.setBackground(Color.black);
		f.add(b4);
		
		Font fb411 = new Font("Times New Roman", Font.BOLD, 12);
		b4.setFont(fb411);
		b4.setForeground(Color.white);
		
		b4.addActionListener(this);
		b3.addActionListener(this);
		
		b1=new JButton(" DECRYPT ");
		b1.setBounds(230,370,100,30);
		f.add(b1);
		
		b1.setBackground(Color.black);
		f.add(b1);
		
		Font fb4 = new Font("Times New Roman", Font.BOLD, 12);
		b1.setFont(fb4);
		b1.setForeground(Color.white);
		
		b1.addActionListener(this);
		
		b11=new JButton(" ENCRYPT ");
		b11.setBounds(80,370,100,30);
		f.add(b11);
		
		b11.setBackground(Color.black);
		f.add(b11);
		
		Font fb41 = new Font("Times New Roman", Font.BOLD, 12);
		b11.setFont(fb41);
		b11.setForeground(Color.white);
		
		b11.addActionListener(this);
		
		b111=new JButton(" BACK ");
		b111.setBounds(20,500,100,30);
		f.add(b111);
		
		b111.setBackground(Color.black);
		f.add(b111);
		
		Font fb42 = new Font("Algerian", Font.BOLD, 12);
		b111.setFont(fb42);
		b111.setForeground(Color.white);
		
		b111.addActionListener(this);
		
		btnUpload = new JButton("UPLOAD");
		btnUpload.addActionListener(this);
		btnUpload.setFont(new Font("Times New Roman", Font.BOLD, 15));
		btnUpload.setBounds(640,190,100,30);
		btnUpload.setOpaque(false);
		btnUpload.setContentAreaFilled(false);
		btnUpload.setBorderPainted(true);
		f.add(btnUpload);
		btnUpload.addActionListener(this);
		btnUpload.setForeground(Color.white);
		btnUpload.setBackground(Color.black);
		
		lblNewLabel = new JLabel(/*new ImageIcon("/home/ashish/b1.png")*/);
		lblNewLabel.setBounds(84, 65, 434, 257);
		lblNewLabel.setBorder(new LineBorder(new Color(0, 0, 0)));
		f.add(lblNewLabel);
		
		f.setLayout(null); 
		f.setSize(800,600);  
		f.setVisible(true);
	}
	
	public static SecretKey getSecretEncryptionKey() throws Exception{
		
		        KeyGenerator generator = KeyGenerator.getInstance("AES");
		
		        generator.init(128); // The AES key size in number of bits
		
		        SecretKey secKey = generator.generateKey();
		
		        return secKey;
		
		    }
	
	 public static byte[] encryptText(String plainText,SecretKey secKey) throws Exception{
		
		         Cipher aesCipher = Cipher.getInstance("AES");
		 
		         aesCipher.init(Cipher.ENCRYPT_MODE, secKey);
		 
		         byte[] byteCipherText = aesCipher.doFinal(plainText.getBytes());
		 
		         return byteCipherText;
		 
		     }

	 public static String decryptText(byte[] byteCipherText, SecretKey secKey) throws Exception {
		 
		         Cipher aesCipher = Cipher.getInstance("AES");
		 
		         aesCipher.init(Cipher.DECRYPT_MODE, secKey);
		 
		         byte[] bytePlainText = aesCipher.doFinal(byteCipherText);
		 
		         return new String(bytePlainText);
		 
		     }

	 
	public static void main(String args[])
	{
		new Aes();  
	} 
	


class close extends WindowAdapter
{
	public void windowClosing(WindowEvent e)
	{
		System.exit(0);
	}
}



@Override
public void actionPerformed(ActionEvent e) 
{
	try
	{
		if(e.getSource()==b11)
		{
			
	        String plainText = ta.getText();;
	
	        secKey = getSecretEncryptionKey();
	
	        cipherText = encryptText(plainText, secKey);
	
	       // System.out.println("Original Text:" + plainText);
	        
	        ta.setText(bytesToHex(cipherText));
	        
	        t.setText(bytesToHex(secKey.getEncoded()));
	        
	        System.out.println("AES Key (Hex Form):"+bytesToHex(secKey.getEncoded()));
	
	        System.out.println("Encrypted Text (Hex Form):"+bytesToHex(cipherText));
		}
		if(e.getSource()==b1)
		{
		    String decryptedText = decryptText(cipherText, secKey);
		    ta.setText(decryptedText);
	        System.out.println("Descrypted Text:"+decryptedText);
		}
		
		if(e.getSource()==btnUpload)
		{
			//c=1;
			JFileChooser fc = new JFileChooser();
			StringBuffer buffer;
		    buffer = new StringBuffer();
			FileNameExtensionFilter fg=new FileNameExtensionFilter( "text files " , "txt");
            fc.setFileFilter(fg);
            int result = fc.showOpenDialog(null);
            if (result == JFileChooser.APPROVE_OPTION) {
                f1 = fc.getSelectedFile();  
                name=f1.toString();  
                System.out.println(name);
                t1.setText(name);
                
                try
        		{
        			FileReader f1=new FileReader(name);
        			br=new BufferedReader(f1);
        			 String l;
        			l=br.readLine();
        			while(l!=null)
        				
        			{
        				inputMessage1=inputMessage1+l+"\n";
        			
        		
        				l=br.readLine();
        			}
        			System.out.println(inputMessage1);
        			br.close();
        			f1.close();
        				// in.close();
        				// System.out.println(s);
                		//inputMessage=ta.getText();
                		//inputMessage=buffer.toString();
                		
                }catch (FileNotFoundException z){ JOptionPane.showMessageDialog(null, "file not found");  }
                catch (IOException z) { z.printStackTrace();  }
            }
         }
		if(e.getSource()==b4)
		{
			secKey1 = getSecretEncryptionKey();
			
	        cipherText1 = encryptText(inputMessage1, secKey1);
	        
	        System.out.println("AES Key (Hex Form):"+bytesToHex(secKey1.getEncoded()));
	        
	        t2.setText(bytesToHex(secKey1.getEncoded()));
	
	        System.out.println("Encrypted Text (Hex Form):"+bytesToHex(cipherText1));
	        
	        try {
				FileWriter fw=new FileWriter(name);
				wr=new BufferedWriter(fw);
				//String str=;
				wr.write(bytesToHex(cipherText1));
				wr.close();
				
			}
			catch(Exception e4) 
			{
			}
	        
		}
		if(e.getSource()==b3)
		{
			String decryptedText1 = decryptText(cipherText1, secKey1);
		    
	        System.out.println("Descrypted Text:"+decryptedText1);
	        
	        try {
				FileWriter fw=new FileWriter(name);
				wr=new BufferedWriter(fw);
				//String str=;
				wr.write(decryptedText1);
				wr.close();
				
			}
			catch(Exception e4) 
			{
			}
	        
		}
	}
	catch(Exception e1)
	{
		
	}
	
	if(e.getSource()==b111)
	{
		f.dispose();
		Symmetric c=new Symmetric();
		c.setVisible(true);
	}
	
}

private static String  bytesToHex(byte[] hash) {
        return DatatypeConverter.printHexBinary(hash);
    }


public void setVisible(boolean b) {
	// TODO Auto-generated method stub
	
}
}