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Caesar Cipher Box (Encrypt/Decrpyt)

This is a small program that lets you enter either an encoded or decoded phrase and lets you encrypt or decrypt the phrase depending on what you want to do. There are two class files and two execution files listed below. You will need to have BreezySwing.jar available.

Submitted By: Whizgirl

Actions:

Rating:

Views: 15,975

Language: Java

Last Modified: February 1, 2006

Instructions: Seperate the three files and compile. Run the file listed as CeasarBox.java. Make sure

Snippet

/**
* CeasarBox.java
*
*/
import javax.swing.*;
import BreezySwing.*;
import TerminalIO.*;
public class CeasarBox extends GBFrame {
//Declare variables for the window objects.
private JLabel encryptLabel;
private JLabel decryptLabel;
private JTextField encryptField;
private JTextField decryptField;
private JButton encryptButton;
private JButton decryptButton;
//Constructor
public CeasarBox(){
//Instantiate and add window objects to the window.
encryptLabel = addLabel ("Enter phrase to be encrypted:" ,1,1,2,1);
decryptLabel = addLabel ("Enter phrase to be decrypted:" ,1,3,2,1);
encryptField = addTextField ("" ,2,1,2,1);
decryptField = addTextField ("" ,2,3,2,1);
encryptButton = addButton ("Encrypt" ,3,1,2,1);
decryptButton = addButton ("Decrypt" ,3,3,2,1);
KeyboardReader reader = new KeyboardReader();
}
//Respond to button clic events
public void buttonClicked (JButton buttonObj){
// Local variables
Encrypt eCrypt = new Encrypt();
Decrypt dCrypt = new Decrypt();
// Determine which button was clicked.
if (buttonObj == encryptButton){
//Encrypt the phrase
eCrypt.setString(encryptField.getText());
decryptField.setText(eCrypt.getString());
}else{
// Decrypt the phrase
dCrypt.setString(decryptField.getText());
encryptField.setText(dCrypt.getString());
}
}
// Execution begins in the mehtod main as usual.
public static void main(String[] args) {
CeasarBox theGUI = new CeasarBox();
theGUI.setSize (350, 100); //Set the window's size in pixels
// width = 350, height = 100
theGUI.setVisible (true); //Make the window visible
}
}
/**************End of CeasarBox.java*/
import java.awt.*;
import java.awt.event.*;
/**
* Sample application using Frame.
*
* @author
* @version 1.00 05/03/21
*/
public class CeasarBoxFrame extends Frame {
/**
* The constructor.
*/
public CeasarBoxFrame() {
MenuBar menuBar = new MenuBar();
Menu menuFile = new Menu();
MenuItem menuFileExit = new MenuItem();
menuFile.setLabel("File");
menuFileExit.setLabel("Exit");
// Add action listener.for the menu button
menuFileExit.addActionListener
(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
CeasarBoxFrame.this.windowClosed();
}
}
);
menuFile.add(menuFileExit);
menuBar.add(menuFile);
setTitle("CeasarBox");
setMenuBar(menuBar);
setSize(new Dimension(400, 400));
// Add window listener.
this.addWindowListener
(
new WindowAdapter() {
public void windowClosing(WindowEvent e) {
CeasarBoxFrame.this.windowClosed();
}
}
);
}
/**
* Shutdown procedure when run as an application.
*/
protected void windowClosed() {
// TODO: Check if it is safe to close the application
// Exit application.
System.exit(0);
}
}
/**************End of CeasarBoxFrame.java*/
public class Decrypt {
public int stringLength;
public int square;
public String decryptedString = "";
public String inputedString = "";
public String setString(String s) {
for(int i= 0; i < s.length(); i++) {
if(s.charAt(i) != ' ') {
inputedString += s.charAt(i);
}
}
stringLength = inputedString.length();
for(int i = 1; i < (stringLength / 2); i++) {
if (i * i == stringLength) {
square = i;
break;
}
}
return inputedString;
}
public String getString() {
char[][] array = new char[square][square];
int counter = 0;
for(int i = 0; i < square; i++) {
for(int j = 0; j < square; j++) {
array[i][j] = inputedString.charAt(counter);
counter++;
}
}
for(int i = 0; i < square; i++) {
for(int j = 0; j < square; j++) {
decryptedString += array[j][i];
}
}
return decryptedString;
}
}
/*****End of decrypt.java*/
public class Encrypt {
public int stringLength;
public int square;
public String encryptedString = "";
public String inputedString = "";
public String setString(String s) {
for(int i= 0; i < s.length(); i++) {
if(s.charAt(i) != ' ') {
inputedString += s.charAt(i);
}
}
stringLength = inputedString.length();
for(int i = 1; i < (stringLength / 2); i++) {
if (i * i == stringLength) {
square = i;
break;
}
}
return inputedString;
}
public String getString() {
char[][] array = new char[square][square];
int counter = 0;
for(int i = 0; i < square; i++) {
for(int j = 0; j < square; j++) {
array[j][i] = inputedString.charAt(counter);
counter++;
}
}
for(int i = 0; i < square; i++) {
for(int j = 0; j < square; j++) {
encryptedString += array[i][j];
}
}
return encryptedString;
}
}
/*****End of encrypt.java*/

Copy & Paste

/**
 * CeasarBox.java
 *
 */

import javax.swing.*;
import BreezySwing.*;
import TerminalIO.*;

public class CeasarBox extends GBFrame {
    
    //Declare variables for the window objects.
    private JLabel          encryptLabel;
    private JLabel           decryptLabel;
    private JTextField  encryptField;
    private JTextField  decryptField;
    private JButton          encryptButton;
    private JButton      decryptButton;
    
    //Constructor
    public CeasarBox(){
         //Instantiate and add window objects to the window.
         encryptLabel  = addLabel      ("Enter phrase to be encrypted:" ,1,1,2,1);
         decryptLabel  = addLabel      ("Enter phrase to be decrypted:" ,1,3,2,1);         
         encryptField  = addTextField (""        ,2,1,2,1);
         decryptField  = addTextField (""        ,2,3,2,1);
         encryptButton = addButton      ("Encrypt" ,3,1,2,1);
         decryptButton = addButton      ("Decrypt" ,3,3,2,1);
         KeyboardReader reader = new KeyboardReader();
         
    }
    
    //Respond to button clic events
    public void buttonClicked (JButton buttonObj){
         // Local variables
         Encrypt eCrypt = new Encrypt();
         Decrypt dCrypt = new Decrypt();
         
         // Determine which button was clicked.
         if (buttonObj == encryptButton){
              
              //Encrypt the phrase
              eCrypt.setString(encryptField.getText());
              decryptField.setText(eCrypt.getString());
         
         }else{
              
              // Decrypt the phrase
              dCrypt.setString(decryptField.getText());
              encryptField.setText(dCrypt.getString());
         }
    }
    
    // Execution begins in the mehtod main as usual.
    public static void main(String[] args) {
        CeasarBox theGUI = new CeasarBox();
        theGUI.setSize (350, 100);          //Set the window's size in pixels
                                                //  width = 350, height = 100
        theGUI.setVisible (true);          //Make the window visible
    }
}

/**************End of CeasarBox.java*/

import java.awt.*;
import java.awt.event.*;

/**
 * Sample application using Frame.
 *
 * @author 
 * @version 1.00 05/03/21
 */
public class CeasarBoxFrame extends Frame {
    
    /**
     * The constructor.
     */  
     public CeasarBoxFrame() {
                
        MenuBar menuBar = new MenuBar();
        Menu menuFile = new Menu();
        MenuItem menuFileExit = new MenuItem();
        
        menuFile.setLabel("File");
        menuFileExit.setLabel("Exit");
        
        // Add action listener.for the menu button
        menuFileExit.addActionListener
        (
            new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    CeasarBoxFrame.this.windowClosed();
                }
            }
        ); 
        menuFile.add(menuFileExit);
        menuBar.add(menuFile);
        
        setTitle("CeasarBox");
        setMenuBar(menuBar);
        setSize(new Dimension(400, 400));
        
        // Add window listener.
        this.addWindowListener
        (
            new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    CeasarBoxFrame.this.windowClosed();
                }
            }
        );  
    }
    
    
    /**
     * Shutdown procedure when run as an application.
     */
    protected void windowClosed() {
         
         // TODO: Check if it is safe to close the application
         
        // Exit application.
        System.exit(0);
    }
}

/**************End of CeasarBoxFrame.java*/

public class Decrypt {
     
     public int stringLength;
     public int square;
     public String decryptedString = "";
     public String inputedString = "";
     
     public String setString(String s) {
          for(int i= 0; i < s.length(); i++) {
               if(s.charAt(i) != ' ') {
                    inputedString += s.charAt(i);
               }
          }
          stringLength = inputedString.length();
          for(int i = 1; i < (stringLength / 2); i++) {
               if (i * i == stringLength) {
                    square = i;
                    break;
               }
          }
          return inputedString;          
     }
     
     public String getString() {
          char[][] array = new char[square][square];
          int counter = 0;
          for(int i = 0; i < square; i++) {
               for(int j = 0; j < square; j++) {
                    array[i][j] = inputedString.charAt(counter);
                    counter++;
               }
          }
          for(int i = 0; i < square; i++) {
               for(int j = 0; j < square; j++) {
                    decryptedString += array[j][i];
               }
          }
          return decryptedString;
     }
}

/*****End of decrypt.java*/

public class Encrypt {
     
     public int stringLength;
     public int square;
     public String encryptedString = "";
     public String inputedString = "";
     
     public String setString(String s) {
          for(int i= 0; i < s.length(); i++) {
               if(s.charAt(i) != ' ') {
                    inputedString += s.charAt(i);
               }
          }
          stringLength = inputedString.length();
          for(int i = 1; i < (stringLength / 2); i++) {
               if (i * i == stringLength) {
                    square = i;
                    break;
               }
          }
          return inputedString;          
     }
     
     public String getString() {
          char[][] array = new char[square][square];
          int counter = 0;
          for(int i = 0; i < square; i++) {
               for(int j = 0; j < square; j++) {
                    array[j][i] = inputedString.charAt(counter);
                    counter++;
               }
          }
          for(int i = 0; i < square; i++) {
               for(int j = 0; j < square; j++) {
                    encryptedString += array[i][j];
               }
          }
          return encryptedString;
     }
}

/*****End of encrypt.java*/

Comments
potator 2007-12-02 15:46:33
It would've been better if you told us how you encrypted the text or what method you used. Can anyone figure this out. We can't e-mail or private message Whizgirl.
todd.zurowski 2009-04-10 21:04:40
i hate C++