secret.java

放射密码java实现

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
import java.io.*;
import java.math.*;
import java.awt.Dialog;
public class secret implements ActionListener{
static JFrame f=null;
       JDialog d;
     // JPasswordField passwd1, passwd2, passwd3;
    JButton b1, b2;
    public secret(){
        f=new JFrame("文件加密和解密系统");
         Icon i1 = new ImageIcon("images/1.gif");
         Container contentPane = f.getContentPane();
         JPanel p1 = new JPanel();
        JLabel j = new JLabel(i1);
        p1.add(j);

        JPanel p2 = new JPanel();
        p2.setLayout(new GridLayout(1, 2));
        b1 = new JButton("加密");
        b1.addActionListener(this);
        b2 = new JButton("解密");
        b2.addActionListener(this);
        p2.add(b1);p2.add(b2);
        contentPane.add(p1, BorderLayout.NORTH);
        contentPane.add(p2, BorderLayout.CENTER);
        f.setSize(340,165);
        f.setVisible(true);
       f.addWindowListener(new WindowAdapter() {
           public void windowClosing(WindowEvent evt) {
               // f.dispose();
               System.exit(0);
           }
       });
    }
    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        if (cmd.equals("加密")) {new jiami();}
        else new jiemi();
    }

}
class jiami implements ActionListener{
    JDialog d;
    JFrame f;
  JComboBox combo1,combo2;
   JTextArea area1;
  JScrollPane jsp;
    JButton b3,b4;
    public jiami(){
    f=new JFrame("数据加密");
        Container contentPane = f.getContentPane();
        JPanel p1 = new JPanel();
       area1=new JTextArea(5,36);
       jsp = new JScrollPane(area1);
       p1.add(jsp);
       p1.setBorder(BorderFactory.createTitledBorder(
               BorderFactory.createLineBorder(Color.blue, 2), "明文加密",
               TitledBorder.CENTER, TitledBorder.TOP));

       JPanel p2 = new JPanel();
       p2.setLayout(new GridLayout(2, 2));
     String[] data1={"1","3","5","7","9"};
      combo1=new JComboBox(data1);
      combo1.setEditable(true);
      ComboBoxEditor editor1=combo1.getEditor();
      combo1.configureEditor(editor1,"请选择或直接输入数据");
      String[] data2={"0","1","2","3","4","5","6","7","8","9"};
      combo2=new JComboBox(data2);
      combo2.setEditable(true);
      ComboBoxEditor editor2=combo2.getEditor();
      combo2.configureEditor(editor2,"请选择或直接输入数据");
      JLabel label1=new JLabel("key1:",JLabel.CENTER);
      JLabel label2=new JLabel("key2:",JLabel.CENTER);
      p2.add(label1);
      p2.add(combo1);
      p2.add(label2);
      p2.add(combo2);
      p2.setBorder(BorderFactory.createTitledBorder(
             BorderFactory.createLineBorder(Color.blue, 2), "密钥",
             TitledBorder.CENTER, TitledBorder.TOP));



       JPanel p3=new JPanel();
       p2.setLayout(new GridLayout(1, 2));
       b3=new JButton("确定");
       b3.addActionListener(this);
       p3.add(b3);
       b4=new JButton("退出");
       b4.addActionListener(this);
       p3.add(b4);

        contentPane.add(p1, BorderLayout.NORTH);
        contentPane.add(p2, BorderLayout.CENTER);
         contentPane.add(p3, BorderLayout.SOUTH);
       f.getRootPane().setDefaultButton(b3);
       JMenuBar bar=new JMenuBar();
           JMenu file=new JMenu("文件");
           JMenu about=new JMenu("关于");
           JMenuItem aboutsecret=new JMenuItem("关于…");
           JMenuItem open =new JMenuItem("打开");
           JMenuItem save =new JMenuItem("保存");
           file.add(open);
           file.add(save);
           about.add(aboutsecret);
           bar.add(file);
           bar.add(about);
           f.setJMenuBar(bar);
           open.addActionListener(this);
           save.addActionListener(this);
           aboutsecret.addActionListener(this);

       f.setSize(435,280);
            f.setVisible(true);

    }
    public void actionPerformed(ActionEvent e) {
        String cmd = e.getActionCommand();
        String string=new String();
        String string2=new String();
        String string3=new String();
        String string4=new String();
        String string5=new String();
        if (cmd.equals("确定")){
            int a = Integer.parseInt(combo1.getSelectedItem().toString());
            int b = Integer.parseInt(combo2.getSelectedItem().toString());
            String c = area1.getText();
            char s[] = new char[40];
            int num[] = new int[40];
            s = c.toCharArray();
                for (int i =0, j = 0,k=0; i < s.length; i++) {
                    if (s[i] >= 'a' && s[i] <= 'z') {
                        num[i] = convertchar(s[i]);
                        num[i] = (num[i] * a + b) % 26;
                        s[i] = (char)convertnum(num[i]);
                    }
                    if (s[i] >= 'A' && s[i] <= 'Z') {
                        num[i] = convertCHAR(s[i]);
                        num[i] = (num[i] * a + b) % 26;
                        s[i] = (char)convertNUM(num[i]);
                    }
                }

                for (int n = 0; n < s.length; n++) {
                        string = string +s[n];
                }

                area1.setText(string);
            }
     if (cmd.equals("打开")){
        FileDialog fd=new FileDialog(f,"open",FileDialog.LOAD);
        fd.setVisible(true);
        string2=fd.getDirectory()+fd.getFile();
        if (fd.getDirectory()==null){
        area1.setText("");
        }
        else {
            String fileName=string2;
            String line;
            try{
            BufferedReader in=new BufferedReader(new FileReader(fileName));
            line=in.readLine();
            while(line!=null){
            string4=string4+line;
            line=in.readLine();
            }
            in.close();
            }
        catch(IOException iox){JOptionPane.showMessageDialog(d, "读取"+fileName+"时出错！");}
        area1.setText(string4);
        }
        }
    if (cmd.equals("保存")){
        FileDialog fd=new FileDialog(f,"open",FileDialog.SAVE);
        fd.setVisible(true);
        string3=fd.getDirectory()+fd.getFile();
        if (fd.getDirectory()==null){
     //  area1.setText("");
       }
       else {
           String fileName = string3;
           string5=area1.getText();
           try{
               BufferedWriter out = new BufferedWriter(new FileWriter(fileName));
               out.write(string5);
               out.close();
           }
           catch(IOException iox){JOptionPane.showMessageDialog(d, "写"+fileName+"时出错！");}
       }
        }

   if(cmd.equals("关于…")){
   JOptionPane.showMessageDialog(d, "版权所有＠防冒必究"+"  "+"2007");
   }

        if (cmd.equals("退出")) f.dispose();
    }
public int convertnum(int a){
        int b=a+97;
        return b;

}
public int convertchar(char b){

        int a=(int)b-97;

            return a;
    }
public static void main(String args[]) {
        new secret();
    }
public int convertCHAR(char b){
    int a=(int)b-65;
    return a;
    }
public int convertNUM(int a){
    int b=(char)(a+65);
          return b;

}

}
 class jiemi implements ActionListener{
     JDialog d;
       JFrame f;
     JComboBox combo1,combo2;
      JTextArea area1;
      JScrollPane jsp;
       JButton b3,b4;
       public jiemi(){
       f=new JFrame("数据解密");
           Container contentPane = f.getContentPane();
           JPanel p1 = new JPanel();
          area1=new JTextArea(5,36);
            jsp = new JScrollPane(area1);
          p1.add(jsp);
          p1.setBorder(BorderFactory.createTitledBorder(
                  BorderFactory.createLineBorder(Color.blue, 2), "密文解密",
                  TitledBorder.CENTER, TitledBorder.TOP));

          JPanel p2 = new JPanel();
          p2.setLayout(new GridLayout(2, 2));
         String[] data1={"1","3","5","7","9"};
         combo1=new JComboBox(data1);
         combo1.setEditable(true);
         ComboBoxEditor editor1=combo1.getEditor();
         combo1.configureEditor(editor1,"请选择或直接输入密钥");
         String[] data2={"0","1","2","3","4","5","6","7","8","9"};
         combo2=new JComboBox(data2);
         combo2.setEditable(true);
         ComboBoxEditor editor2=combo2.getEditor();
         combo2.configureEditor(editor2,"请选择或直接输入密钥");
         JLabel label1=new JLabel("key1:",JLabel.CENTER);
         JLabel label2=new JLabel("key2:",JLabel.CENTER);
         p2.add(label1);
         p2.add(combo1);
         p2.add(label2);
         p2.add(combo2);
         p2.setBorder(BorderFactory.createTitledBorder(
                BorderFactory.createLineBorder(Color.blue, 2), "密钥",
                TitledBorder.CENTER, TitledBorder.TOP));



          JPanel p3=new JPanel();
          p2.setLayout(new GridLayout(1, 2));
          b3=new JButton("确定");
          b3.addActionListener(this);
          p3.add(b3);
          b4=new JButton("退出");
          b4.addActionListener(this);
          p3.add(b4);

           contentPane.add(p1, BorderLayout.NORTH);
           contentPane.add(p2, BorderLayout.CENTER);
            contentPane.add(p3, BorderLayout.SOUTH);
            JMenuBar bar=new JMenuBar();
            JMenu file=new JMenu("文件");
            JMenu about=new JMenu("关于");
            JMenuItem aboutsecret=new JMenuItem("关于…");
            JMenuItem open =new JMenuItem("打开");
            JMenuItem save =new JMenuItem("保存");
            file.add(open);
            file.add(save);
            about.add(aboutsecret);
            bar.add(file);
            bar.add(about);
            f.setJMenuBar(bar);
            open.addActionListener(this);
            save.addActionListener(this);
            aboutsecret.addActionListener(this);
          f.getRootPane().setDefaultButton(b3);
          f.setSize(435,280);
               f.setVisible(true);

       }
public void actionPerformed(ActionEvent e) {
    String cmd = e.getActionCommand();
    String string = new String();
    String string2=new String();
    String string3=new String();
    String string4=new String();
    String string5=new String();

    if (cmd.equals("确定")) {
        int a = Integer.parseInt(combo1.getSelectedItem().toString());
        int b = Integer.parseInt(combo2.getSelectedItem().toString());
        int q = function(a, 26);
        if (q == 0) {
            JOptionPane.showMessageDialog(d, "无解密逆元，无法解密！！");
        } else {
            String c = area1.getText();
            char s[] = new char[40];
            int num[] = new int[40],f[]=new int[40];
            s = c.toCharArray();
            for (int i = 0; i < s.length; i++) {
                if (s[i] >= 'a' && s[i] <= 'z') {
                    num[i] = convertchar(s[i]);
                    f[i] = ((num[i]-b)*q)%26;
                    s[i] = (char) convertnum(f[i]);
                }
                if (s[i] >= 'A' && s[i] <= 'Z') {
                    num[i] = convertCHAR(s[i]);
                    f[i] = ((num[i]-b)*q)%26;
                    s[i] = (char) convertNUM(f[i]);
                }
            }
                for (int n =0; n<s.length;n++) {

                    string=string+s[n];
                }

                area1.setText(string);
        }
    }
  if (cmd.equals("打开")){
   FileDialog fd=new FileDialog(f,"open",FileDialog.LOAD);
   fd.setVisible(true);
   string2=fd.getDirectory()+fd.getFile();
   if (fd.getDirectory()==null){
   area1.setText("");
   }
   else {
       String fileName=string2;
       String line;
       try{
       BufferedReader in=new BufferedReader(new FileReader(fileName));
       line=in.readLine();
       while(line!=null){
       string4=string4+line;
       line=in.readLine();
       }
       in.close();
       }
   catch(IOException iox){JOptionPane.showMessageDialog(d, "读取"+fileName+"时出错！");}
   area1.setText(string4);
   }
   }
if (cmd.equals("保存")){
   FileDialog fd=new FileDialog(f,"open",FileDialog.SAVE);
   fd.setVisible(true);
   string3=fd.getDirectory()+fd.getFile();
   if (fd.getDirectory()==null){
//  area1.setText("");
  }
  else {
      String fileName = string3;
      string5=area1.getText();
      try{
          BufferedWriter out = new BufferedWriter(new FileWriter(fileName));
          out.write(string5);
          out.close();
      }
      catch(IOException iox){JOptionPane.showMessageDialog(d, "写"+fileName+"时出错！");}
  }
   }
   if(cmd.equals("关于…")){
  JOptionPane.showMessageDialog(d, "版权所有＠防冒必究"+"  "+"2007");
  }

    if (cmd.equals("退出")) f.dispose();
}
public int convertnum(int a){
        int b=a+97;
        return b;
}
public int convertchar(char b){
        int a=(int)b-97;
            return a;
    }
public int convertCHAR(char b){
    int a=(int)b-65;
    return a;
    }
public int convertNUM(int a){
        int b=a+65;
              return b;

}
public int function (int d,int f ){
              int x1=1,x2=0,y1=0,y2=1,x3=f,y3=d,q=0;
              int t1,t2,t3,temp;
              for(; ;){
                      temp=x3;
                      if (y3==0) {y2=0;System.out.println("无逆元");break;}
                      if (y3==1) break;
                      while(x3>=y3){
                      q++;
                      x3=x3-y3;
                      }
                      x3=temp;
              t1=x1-q*y1;t2=x2-q*y2;t3=x3-q*y3;
              x1=y1;x2=y2;x3=y3;
              y1=t1;y2=t2;y3=t3;
              q=0;
              }
              if (y2>0) {y2=y2%f;}
              if (y2<0) {y2=y2+f;}
              System.out.println(y2);
          return y2;
}
 }
class help {
    JFrame f=null;
 public help(){
 f=new JFrame("帮助");
 Container contentPane = f.getContentPane();
 JPanel p1 = new JPanel();
 JLabel j1=new JLabel("欢迎使用本加密、解密系统！");
 JLabel j2=new JLabel("下面我简单介绍一下本系统：");
 JLabel j3=new JLabel("   本系统主要能对文件进行加密和解密，你可以采取打开文件");
 JLabel j4=new JLabel("的方式或自己书写的方式进行进行加密或解密，但是本系统只能");
 JLabel j5=new JLabel("英文字母加密，对于其他文字或字符，将不做任何操作");
 JLabel j6=new JLabel("（注意：第一个加密密钥必须要和26互为素数）");
 JLabel j7=new JLabel("合作愉快");
 p1.add(j1);
  p1.add(j2);
   p1.add(j3);
    p1.add(j4);
     p1.add(j5);
      p1.add(j6);
       p1.add(j7);
       contentPane.add(p1,BorderLayout.CENTER);
       f.setSize(300,200);
        f.setVisible(true);
 }
}