polybios.java

是一个用JAVA编写的polybios加密解密算法

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class polybios extends JFrame implements ActionListener{
 char miyao[][]={
     {' ','a','b','c','d','e'},
     {'a','a','b','c','d','e'},
     {'b','f','g','h','i','k'},
     {'c','l','m','n','o','p'},
     {'d','q','r','s','t','u'},
     {'e','v','w','x','y','z'}
        };
        char buf[];
        String s1=new String();
        String x,y;
        int i;
        int j;
        int l;
        int n;
 JPanel p1=new JPanel();
 JPanel p2=new JPanel();
 JLabel la1=new JLabel("请在下面文本框输入要处理的文件");
 JTextArea text1=new JTextArea(8,4);
 JTextArea text2=new JTextArea(8,4);
 JButton btn1=new JButton("加密");
 JButton btn2=new JButton("解密");
 JButton btn3=new JButton("清除");
 public polybios(){
  setSize(500,250);
  setTitle("polybios");
  la1.setBorder(BorderFactory.createEtchedBorder());
  la1.setOpaque(true);
  JScrollPane jsp1=new JScrollPane(text1);
  JScrollPane jsp2=new JScrollPane(text2);
  p1.add(la1);
  p2.add(btn1);
  p2.add(btn2);
  p2.add(btn3);
  Container contentPane=this.getContentPane();
  contentPane.setLayout(new GridLayout(4,1));
  contentPane.add(p1);
  contentPane.add(jsp1);
  contentPane.add(p2);
  contentPane.add(jsp2);
  btn1.addActionListener(this);
  btn2.addActionListener(this);
  btn3.addActionListener(this);
  setVisible(true);
 }
 public void actionPerformed(ActionEvent e){
  if(e.getSource()==btn1){
   jiami(); 
  }
  else if(e.getSource()==btn2){
   jiemi();
  }
  else if(e.getSource()==btn3){
   text1.setText("");
   text2.setText("");
  }
 }
 public static void main(String args[]){
  new polybios();
 }
 void jiami(){
  s1=text1.getText();
  s1=s1.toLowerCase();
  l=s1.length();
  buf=s1.toCharArray();
  for(n=0;n<l;n++)
           {for(i=1;i<6;i++)
           {for(j=1;j<6;j++)          
             if(miyao[i][j]==buf[n])
                  {x=String.valueOf(miyao[i][0]);
                   y=String.valueOf(miyao[0][j]);
                   text2.append(x);
                   text2.append(y);
                   }
            }
         if(buf[n]=='j')
              {
              	x=String.valueOf('j');
              	y=String.valueOf('j');
              	text2.append(x);
              	text2.append(y);
              }    
        }
 }
 void jiemi(){
  s1=text1.getText();
  s1=s1.toLowerCase();
  l=s1.length();
  buf=s1.toCharArray();
  for(n=0;n<l-1;n=n+2)
           {for(i=1;i<6;i++)
            if(miyao[i][0]==buf[n])
              {for(j=1;j<6;j++)
                if(miyao[0][j]==buf[n+1])
                  {x=String.valueOf(miyao[i][j]);
                   text2.append(x);
                  }
              }
if(buf[n]=='j'&&buf[n+1]=='j')
            {
            	x=String.valueOf('j');
            	text2.append(x);
            }
           }
  }
 }