jiami.java

应用公钥加密体制的代表算法RSA 应用对称加密算法DES 应用散列算法MD5计算消息摘要 数字签名并验证

/*
 * jiami.java
 *
 * Created on 2007年10月12日, 下午8:26
 */

package a;

/**
 *
 * @author  guowen
 */
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.interfaces.*;
import javax.crypto.interfaces.*;
import java.net.*;
final class jiami extends javax.swing.JFrame {
    
    /**
     * Creates new form jiami
     */
    public jiami() {
        initComponents();
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jLabel3 = new javax.swing.JLabel();
        jButton2 = new javax.swing.JButton();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jmi1 = new javax.swing.JMenuItem();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenuItem2 = new javax.swing.JMenuItem();
        jMenu2 = new javax.swing.JMenu();
        jmi2 = new javax.swing.JMenuItem();
        jMenu5 = new javax.swing.JMenu();
        jmi31 = new javax.swing.JMenuItem();
        jmi32 = new javax.swing.JMenuItem();
        jmi33 = new javax.swing.JMenuItem();
        jMenu3 = new javax.swing.JMenu();
        jmi4 = new javax.swing.JMenuItem();
        jmi5 = new javax.swing.JMenuItem();
        jMenu4 = new javax.swing.JMenu();
        jmi6 = new javax.swing.JMenuItem();
        jmi7 = new javax.swing.JMenuItem();
        jmi8 = new javax.swing.JMenuItem();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jTextArea2.setColumns(20);
        jTextArea2.setEditable(false);
        jTextArea2.setRows(5);
        jTextArea2.setText("状态：\n");
        jTextArea2.setName(""); // NOI18N
        jScrollPane2.setViewportView(jTextArea2);

        jLabel1.setText("消息摘要:");

        jButton1.setText("发送加密的消息");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jLabel3.setText("接收方的IP地址:");

        jButton2.setText("发送DES密钥");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jMenu1.setText("文件");

        jmi1.setText("保存消息");
        jmi1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi1ActionPerformed(evt);
            }
        });
        jMenu1.add(jmi1);

        jMenuItem1.setText("打开消息文件");
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuItem1);

        jMenuItem2.setText("清空消息");
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuItem2);

        jMenuBar1.add(jMenu1);

        jMenu2.setText("消息");

        jmi2.setText("计算消息摘要");
        jmi2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi2ActionPerformed(evt);
            }
        });
        jMenu2.add(jmi2);

        jMenu5.setText("数字签名");

        jmi31.setText("输入私钥");
        jmi31.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi31ActionPerformed(evt);
            }
        });
        jMenu5.add(jmi31);

        jmi32.setText("输入消息摘要");
        jmi32.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi32ActionPerformed(evt);
            }
        });
        jMenu5.add(jmi32);

        jmi33.setText("数字签名");
        jmi33.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi33ActionPerformed(evt);
            }
        });
        jMenu5.add(jmi33);

        jMenu2.add(jMenu5);

        jMenu3.setText("加密");

        jmi4.setText("生成密钥");
        jmi4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi4ActionPerformed(evt);
            }
        });
        jMenu3.add(jmi4);

        jmi5.setText("加密");
        jmi5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi5ActionPerformed(evt);
            }
        });
        jMenu3.add(jmi5);

        jMenu2.add(jMenu3);

        jMenuBar1.add(jMenu2);

        jMenu4.setText("密钥");

        jmi6.setText("输入对方公钥");
        jmi6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi6ActionPerformed(evt);
            }
        });
        jMenu4.add(jmi6);

        jmi7.setText("输入要加密的密钥");
        jmi7.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi7ActionPerformed(evt);
            }
        });
        jMenu4.add(jmi7);

        jmi8.setText("使用对方公钥加密");
        jmi8.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jmi8ActionPerformed(evt);
            }
        });
        jMenu4.add(jmi8);

        jMenuBar1.add(jMenu4);

        setJMenuBar(jMenuBar1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 536, Short.MAX_VALUE)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel3)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 165, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 128, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 436, Short.MAX_VALUE)))
                .addContainerGap())
            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 536, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 217, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 136, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1)
                    .addComponent(jButton2))
                .addContainerGap())
        );

        pack();
    }// </editor-fold>                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
     
        
              try{
          String ip=jiami.jTextField3.getText();
           Socket s=new Socket(ip,6123);
           OutputStream ops=s.getOutputStream();
           InputStream ips=s.getInputStream();
           
           
           FileInputStream fis=new FileInputStream("RSA加密.dat");
          int num=fis.available();
           byte buf[]=new byte[num];
           int len=fis.read(buf);
           
           ops.write(buf,0,len);
           ops.close();
           fis.close();
           s.close();
         }catch(Exception e){
             System.out.println(e);
         }
   
    }                                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
       
       try{
          String ip=jiami.jTextField3.getText();
           Socket s=new Socket(ip,6000);
           OutputStream ops=s.getOutputStream();
           InputStream ips=s.getInputStream();
           
           
           FileInputStream fis=new FileInputStream("message.txt");
           int num=fis.available();
           byte buf[]=new byte[num];
           int len=fis.read(buf);
           
           ops.write(buf,0,len);
           ops.close();
           fis.close();
           s.close();
         }catch(Exception e){