import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
class KClient
{
//__________________ VARIABLES ___________________________
public static String LocalIP="127.0.0.1";
public static String MsgVal="";
public static String PubKey="",PrvKey="",Nval="";
public static String str1="",str2="",str3="",str4="";
public static Rsa rsa=new Rsa(); //Creating an Object of Rsa class from Rsa.java
//__________________ FRAME OBJECTS _______________________
public static Frame Main1,Main2,Enc1,Enc2,Dec1,Dec2,Msg1,Msg2;
//__________________ LOGIN FRAME _________________________
public static Frame Lgn1,Lgn2;
public static Label lblServIP = new Label ("Server IP Address & Port Number");
public static TextField txtServIP = new TextField("192.168.1.4");
public static Button cmdConnect = new Button("Connect");
public static Label lblShow1 = new Label("DIGITAL");
public static Label lblShow2 = new Label("ENVELOPE");
//__________________ MAIN FRAME _________________________
public static Label lblMain=new Label("DIGITAL ENVELOPE");
public static MenuBar mbar=new MenuBar();
public static Menu mnufile=new Menu("F i l e ");
public static MenuItem mnuEnc,mnuDec,mnuExit;
//__________________ Encrypt FRAME ______________________
public static Label elblMain = new Label("\"DIGITAL ENVELOPE\" Encryption Screen");
public static Label elblUserList = new Label("List of Logged Users");
public static Label elblRSAPubKey = new Label("RSA Public Key");
public static Label elblOf = new Label("of");
public static Label elblLocalIP = new Label("Local IP Address");
public static Label elblDESKey = new Label("Random DES Key");
public static Label elblEDesKey = new Label("Encrypted DES Key using RSA");
public static Label elblPlainTxt = new Label("Plain Text");
public static Label elblCyferTxt = new Label("Encrypted Text (Cypher) using DES Key");
public static Button ecmdEncDesKey = new Button("Encrypt DES Key");
public static Button ecmdOpenFile = new Button("Open File");
public static Button ecmdEnc = new Button("Encrypt >");
public static Button ecmdSend = new Button("< Send >");
public static TextField etxtRSAPubKey = new TextField("");
public static TextField etxtRSAnVal = new TextField("");
public static TextField etxtRemoteIP = new TextField("");
public static TextField etxtLocalIP = new TextField("127.0.0.1");
public static TextField etxtDESKey = new TextField("");
public static TextField etxtEDESKey = new TextField("");
public static TextArea etxtPlainText = new TextArea("");
public static TextArea etxtCyferText = new TextArea("");
public static List etxtUserList = new List();
//__________________ Decrypt FRAME ______________________
public static Label dlblMain = new Label("\"DIGITAL ENVELOPE\" Decryption Screen");
public static Label dlblUserList = new Label("Received IP Addresses");
public static Label dlblRSAPrvKey = new Label("RSA Private Key");
public static Label dlblLocalIP = new Label("Local IP Address");
public static Label dlblDESKey = new Label("Encrypted DES Key using RSA Public Key");
public static Label dlblDDesKey = new Label("Decrypted DES Key using RSA Private Key");
public static Label dlblCyferTxt = new Label("Cypher Text");
public static Label dlblPlainTxt = new Label("Decrypted Plain Text");
public static Button dcmdDecDesKey = new Button("Decrypt DES Key");
public static Button dcmdDec = new Button("Decrypt");
public static Button dcmdSave = new Button("Save");
public static TextField dtxtLocalIP = new TextField("");
public static TextField dtxtRSAPrvKey = new TextField("");
public static TextField dtxtDESKey = new TextField("");
public static TextField dtxtDDesKey = new TextField("");
public static TextArea dtxtPlainText = new TextArea("");
public static TextArea dtxtCyferText = new TextArea("");
public static List dtxtUserList = new List(); //List of Senders
public static List dtxtDDesKeys = new List(); //Hidden
public static List dtxtCyfers = new List(); //Hidden
//__________________ DataGram ___________________________
public static DatagramSocket ds;
public static int buffer_size=1024;
public static byte buffer[]=new byte[buffer_size];
public static boolean stat=false ; //Connection status
/*=================================================================*/
static class LoginFrame extends Frame
{
public LoginFrame() //Constructor
{
setTitle("C O N N E C T 2 S E R V E R");//Setting Frame Title
setLocation(231, 175); /* Displaying Login Form */
setSize(340,194);
setLayout(null); //Setting Layout of Frame
setVisible(true);
addWindowListener(new XWindow());
add(lblServIP);
add(txtServIP);
add(cmdConnect);
lblServIP .setBounds(13 , 69 , 184, 19);
txtServIP .setBounds(199, 66 , 88 , 22);
cmdConnect.setBounds(120 , 129 , 109, 25);
cmdConnect.addActionListener(new cmdConnect_Click());
try{
InetAddress in=InetAddress.getLocalHost();
LocalIP=(in.getHostAddress());
}catch(UnknownHostException e){}
}
/*-------------------------------------------------------*/
static class XWindow extends WindowAdapter //WindowListener for Encryption frame.
{
public void windowClosing(WindowEvent e)
{
System.exit(1);
}
}
/*-------------------------------------------------------*/
public class cmdConnect_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
setVisible(false); Main2.setVisible(true); //Hide Me,& Show MainFrame
System.out.println(txtServIP.getText());
Send("PHOENIX",txtServIP.getText(),777);
int k=777;
if(stat==false) //Now Connect
{
stat=true; cmdConnect.setLabel("Disconnect");
Send("C "+LocalIP,txtServIP.getText(),k);
PubKey = Long.toString(Rsa.e);
PrvKey = Long.toString(Rsa.d);
Nval = Long.toString(Rsa.n);
dtxtRSAPrvKey.setText(PrvKey);
Send("c "+PubKey,txtServIP.getText(),k); //Sending Public Key to Server
Send("n "+Nval,txtServIP.getText(),k); //Sending n value to Server
// Alert("Successfully connected to the Server","Connected");
}
}
}
} //Login Frame Ends here
/*=================================================================*/
public static class MsgBox extends Frame
{
Label lblMsg=new Label("");
Button cmdOK=new Button("OK");
public MsgBox()
{
setTitle("Notify");
setLocation(220,250);
setSize(350,150);
setResizable(false);
setLayout(null);
addWindowListener(new MWindow());
add(lblMsg);
add(cmdOK);
lblMsg.setBounds(25,15,330,90);
cmdOK.setBounds(130,110,80,30);
cmdOK.addActionListener(new cmdOK_Click());
}
/*-------------------------------------------------------*/
public class cmdOK_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
setVisible(false);
}
}
/*-------------------------------------------------------*/
class MWindow extends WindowAdapter
{
public void windowActivated(WindowEvent e)
{
lblMsg.setText(MsgVal);
repaint();
}
public void windowClosing(WindowEvent e)
{
setVisible(false);
}
public void windowOpened(WindowEvent e)
{
toFront();
}
}
}; //MsgBox Class Ends Here
public static void Alert(String msg,String title)
{
Msg2.setTitle(title);
MsgVal=msg;
Msg2.setVisible(true);
}
/*=================================================================*/
static class MainFrame extends Frame
{
public MainFrame() //Constructor
{
setTitle(LocalIP);//Setting Form Title
setLocation(0, 0); /* Displaying Login Form */
setSize(800,600);
setLayout(null); //Setting Layout of Frame
addWindowListener(new XWindow());
add(lblShow1);
add(lblShow2);
lblShow1.setBounds(50,50,700,200);
lblShow1.setFont(new Font("Arial", Font.BOLD, 125));
lblShow1.setAlignment(1);
lblShow2.setBounds(50,220,700,200);
lblShow2.setFont(new Font("Arial", Font.BOLD, 125));
lblShow2.setAlignment(1);
setMenuBar(mbar);
mnufile.add(mnuEnc =new MenuItem("Encrypt "));
mnufile.add(mnuDec =new MenuItem("Decrypt "));
mnufile.add(mnuExit=new MenuItem("Exit "));
mbar.add(mnufile);
mnuEnc.addActionListener(new mnuEncrypt_Click());
mnuDec.addActionListener(new mnuDecrypt_Click());
mnuExit.addActionListener(new mnuExit_Click());
}
/*-------------------------------------------------------*/
public class mnuEncrypt_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
Main2.setVisible(false);
Enc2.setVisible(true);
}
}
/*-------------------------------------------------------*/
public class mnuDecrypt_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
Main2.setVisible(false);
Dec2.setVisible(true);
}
}
/*-------------------------------------------------------*/
public class mnuExit_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
Send("D "+LocalIP,txtServIP.getText(),777);
System.exit(0);
}
}
/*-------------------------------------------------------*/
static class XWindow extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
Send("D "+LocalIP,txtServIP.getText(),777);
System.exit(0);
}
}
} //Main Frame Ends Here
/*=================================================================*/
static class EncFrame extends Frame
{
public EncFrame() //Constructor
{
setTitle("E N C R Y P T I O N");//Setting Form Title
setLocation(0, 0); /* Displaying Login Form */
setSize(800,600);
setLayout(null); //Setting Layout of Frame
addWindowListener(new ZWindow());
add(elblMain );
add(elblUserList );
add(elblRSAPubKey );
add(elblOf );
add(elblLocalIP );
add(elblDESKey );
add(elblEDesKey );
add(elblPlainTxt);
add(elblCyferTxt);
add(ecmdEncDesKey);
add(ecmdOpenFile );
add(ecmdEnc );
add(etxtRSAPubKey);
add(etxtRSAnVal);
add(etxtRemoteIP );
add(etxtLocalIP );
add(etxtDESKey );
add(etxtEDESKey );
add(etxtPlainText );
add(etxtCyferText );
add(etxtUserList );
add(ecmdSend);
etxtLocalIP.setText(LocalIP);
elblMain.setFont(new Font("Arial", Font.BOLD, 30));
elblMain.setAlignment(1);
elblMain .setBounds(27,22,724,46);
elblUserList .setBounds(36,75,115,16);
elblRSAPubKey .setBounds(198,99,91,19);
elblOf .setBounds(369,99,16,19);
elblLocalIP .setBounds(540,99,97,22);
elblDESKey .setBounds(198,135,136,16);
elblEDesKey .setBounds(198,195,163,16);
elblPlainTxt .setBounds(198,246,73,16);
elblCyferTxt .setBounds(510,246,235,16);
ecmdEncDesKey .setBounds(414,183,208,25);
ecmdEncDesKey .addActionListener(new EncDesKey_Click());
ecmdOpenFile .setBounds(336,243,97,22);
ecmdOpenFile .addActionListener(new OpenFile_Click());
ecmdEnc .setBounds(441,372,67,28);
ecmdEnc .addActionListener(new Enc_Click());
etxtRSAPubKey .setBounds(291,96,40,22); //73
etxtRSAnVal .setBounds(291+37,96,40,22);
etxtRemoteIP .setBounds(387,96,109,22);
etxtLocalIP .setBounds(642,96,109,22);
etxtDESKey .setBounds(198,156,553,22);
etxtEDESKey .setBounds(198,216,553,22);
etxtPlainText .setBounds(198,270,238,274);
etxtCyferText .setBounds(510,267,238,280);
etxtUserList .setBounds(36,96,115,446);
etxtUserList .addActionListener(new elstUserList_Click());
ecmdSend .setBounds(441,372+70,67,28);
ecmdSend .addActionListener(new Send_Click());
}
/*-------------------------------------------------------*/
public static String GenDesKey() //Generating a Random 64bit DES-Key
{
String key="";
int i;
byte a[]=new byte [64];
for(i=0;i<64;i++)
a[i]=(byte)(48+(Math.floor((Math.random())*2)));
for(i=0;i<64;i++)
if(a[i]==49) key=key+"1"; else key=key+"0";
return(key);
}
public class Send_Click implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
int i; String kstr="",kstr1="",keystr="";
Send("s "+LocalIP,etxtRemoteIP.getText(),666); //Sending LocalIP Address to Receiver
/////////////////// Sending Encrypted Key
Send("M ",etxtRemoteIP.getText(),666); //Start sending bytes
char ch; byte ch1;
keystr=etxtEDESKey.getText();
for(i=0;i<keystr.length();i++)
{
ch=(keystr.charAt(i));
ch1=(byte)ch;
kstr1=kstr1.valueOf(ch1+128);
Send("z "+kstr1,etxtRemoteIP.getText(),666); //Sending Bytes
}
Send("m ",etxtRemoteIP.getText(),666); //Stop sending byte &
