AESFileDecryption.java

package MAIN;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.swing.JOptionPane;



public class AESFileDecryption {

	public void decrypt(int key,String path)throws FileNotFoundException, IOException {

		        
		                            
		        // Selecting a Image for operation
		        FileInputStream fis = new FileInputStream(path);
		                            
		        // Converting Image into byte array, create a
		        // array of same size as Image size
		                            
		        byte data[] = new byte[fis.available()];
		                            
		        // Read the array
		        fis.read(data);
		        int i = 0;
		                            
		        // Performing an XOR operation on each value of
		        // byte array due to which every value of Image
		        // will change.
		        for (byte b : data) {
		            data[i] = (byte)(b ^ key);
		            i++;
		        }
		                            
		        // Opening a file for writing purpose
		        FileOutputStream fos = new FileOutputStream(path);
		                            
		        // Writing new byte array value to image which
		        // will Encrypt it.
		                            
		        fos.write(data);
		                            
		        fos.close();
		        fis.close();
        JOptionPane.showMessageDialog(null, "Done");

		
	}
}