將密碼保存到德比或sql數據庫

Question

我有一個應用程序需要我有一個密碼終端。我正在使用JPassword字段（JAVA）。現在我想要的是能夠以加密的形式將密碼保存在數據庫中，而我無法閱讀，並且當我檢索比較時，兩者應該是相同的，但是要保持不可讀。請我怎麼去這個，因爲目前，使用jpassword，我轉換它，當我保存它被看到。當我保存而不轉換時，我無法比較，因爲值不同。我希望能夠比較數據庫和GUI的密碼，而不在數據庫中顯示密碼。請幫忙。

下面是我的代碼：

package trackme; 

    /** 
    * 
    * @author kels 
    */ 
    import java.awt.*; 
    import java.awt.event.*; 
    import javax.swing.*; 
    import javax.swing.event.*; 
    import java.sql.*; 
    import java.util.Arrays; 

    /** 
    * 
    * @author kels 
    */ 
    public class Login extends JFrame implements ActionListener, ItemListener{ 

      DBOperator login; 
    Statement stat; 
    ResultSet rs; 
    Connection con; 

    String comparestring="Registration"; int getint=4; 
    java.sql.Time t = new java.sql.Time(new java.util.Date().getTime()); 
       java.sql.Date dt = new java.sql.Date(new java.util.Date().getTime()); 
     private String dbtxt = null, getpassword, username=null, gettype=null; 
    //private String gettype=""; 
     //name components 
     JLabel lbllogin = new JLabel("Password: "); 
     final JCheckBox cbshow = new JCheckBox("Show Password"); 
     JPasswordField txtlogin = new JPasswordField(10); 

     JLabel lblusername = new JLabel("UserName:"); 
     JTextField txtusername = new JTextField(10); 


      JButton btnlogin = new JButton("Login"); 
      JLabel label = new JLabel(""); 

      //create containers 
      JPanel loginpanel = new JPanel(); 
      JPanel wrappanel = new JPanel(); 
      JPanel finalpanel = new JPanel(); 
      JPanel btnpanel=new JPanel(); 
      JPanel showpanel = new JPanel(); 
      JPanel usernamepanel = new JPanel(); 

     @SuppressWarnings("LeakingThisInConstructor") 
      public Login(){ 
       super("Login"); 
       setResizable(false); 

       setLocation(250, 260); 
       setSize(250,170); 
       Container pane = getContentPane(); 

       //set Layout Managers 
      GridLayout grid = new GridLayout(4,1); 
       BorderLayout bord = new BorderLayout(); 

       //set the managers to the panels 
      wrappanel.setLayout(grid); 
       pane.setLayout(bord); 

       //add components 
       usernamepanel.add(lblusername); 
       usernamepanel.add(txtusername); 
       loginpanel.add(lbllogin); 
       loginpanel.add(txtlogin); 
       wrappanel.add(usernamepanel); 
      wrappanel.add(loginpanel); 
       finalpanel.add(wrappanel); 
       wrappanel.add(showpanel); 
       showpanel.add(cbshow); 
       btnpanel.add(btnlogin); 
       wrappanel.add(label); 
       pane.add(btnpanel, BorderLayout.SOUTH); 
       pane.add(finalpanel, BorderLayout.CENTER); 

       setContentPane(pane); 
       setVisible(true); 
       btnlogin.addActionListener(this); 
       cbshow.addItemListener(this); 

       txtlogin.setEchoChar('*'); 
      } 

     @Override 
      public void actionPerformed(ActionEvent ae){ 
       Object source = ae.getSource(); 
       login = new DBOperator(); 
      stat = login.getStatement(); 
      // PreparedStatement preparedStatement; 
      String status = ""; String getstatus="Loggedout"; String getusername=""; String gettypedb=""; 
      try{ 
      if(source == btnlogin){ 

       java.sql.Time dbtime = null; java.sql.Date dbdate = null; 
       char [] paswrdtxt, passchar; 
      paswrdtxt =txtlogin.getPassword(); 
      getpassword= String.valueOf(paswrdtxt); 

      String getstatustrim=""; 
       //making sure user in not logged in 
       rs=stat.executeQuery("SELECT USERNAMEDB,PASSWORD,TYPE FROM PWORD WHERE PASSWORD=" 
         + ""+"'"+getpassword+"'" +" AND USERNAMEDB="+"'"+txtusername.getText()+"'"+""); 

       while(rs.next()){ 
        username=rs.getString("Usernamedb"); 
       dbtxt=rs.getString("Password"); 
       gettype=rs.getString("Type"); 

       } 
       rs.close(); 

       if(getpassword.equals(dbtxt) && txtusername.getText().equals(username)){ 

        /*do insert to logindb here and check status first to know if logged in or out 
        if loggedin error cause u cant login in while logged in and u can logout when not logged in 
        */ 
          rs = stat.executeQuery("SELECT STATUS FROM LOGINDB WHERE LOGINDATE="+"'"+dt+"'" 
            +" AND USERNAME="+"'"+txtusername.getText()+"'"+""); 
       while(rs.next()){ 

       status=rs.getString("Status"); 

       } 
       rs.close(); 
       }//end if comparison    
      }//end btnlogin 

      stat.close(); 
      }//end try 
      catch(SQLException ex){ 
       System.out.println(ex.toString() + "no deal"); 
      } 

      } 
     public static void main(String[] args){ 
      Login lm = new Login();  

     } 
    } 

在此先感謝

Answer 1

我終於得到了回答我的問題。 經過大量研究，我使用Java加密API將它放在一起。 我感謝上帝，這和您的建議@ cricket_007 下面是我需要的代碼片段：

import java.security.Key; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.crypto.Cipher; 
import javax.crypto.spec.SecretKeySpec; 
import sun.misc.BASE64Decoder; 
import sun.misc.BASE64Encoder; 


private static final String ALGORITHM = "AES"; 
private static final String KEY = "1Hbfh667adfDEJ78"; 

String encryptedPassword = null; String encryptname = null; 
       try { 
        encryptedPassword = encrypt(getpassword); 
        encryptname = encrypt(ppword); 
       } catch (Exception ex) { 
        Logger.getLogger(Tester.class.getName()).log(Level.SEVERE, null, ex); 
       } 

public String encrypt(String value) throws Exception 
{ 
Key key = generateKey(); 
Cipher cipher = Cipher.getInstance(ALGORITHM); 
cipher.init(Cipher.ENCRYPT_MODE, key); 
byte [] encryptedByteValue = cipher.doFinal(value.getBytes("utf-8")); 
String encryptedValue64 = new BASE64Encoder().encode(encryptedByteValue); 
return encryptedValue64; 
} 

private Key generateKey() throws Exception 
{ 
Key key = new SecretKeySpec(KEY.getBytes(),ALGORITHM); 
return key; 
} 

感謝