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Java Code For Password Encryption


Code ResourceAuthor: srinivasaraobora  

Difficulty Level: Intermediate

Published: 23rd Apr 2009   Read: 34245 times  

Filed in: Java
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This Code is useful for password encryption

 


Sample Code
  1. PasswordService.java
  2.  
  3.  
  4.  
  5. import java.io.UnsupportedEncodingException;
  6. import java.security.MessageDigest;
  7. import java.security.NoSuchAlgorithmException;
  8. //import org.myorg.SystemUnavailableException;
  9. import sun.misc.BASE64Encoder;
  10. import sun.misc.CharacterEncoder;
  11.  
  12. public final class PasswordService
  13. {
  14.   private static PasswordService instance;
  15.  
  16.   public PasswordService()
  17.   {
  18.   }
  19.  
  20.   public synchronized String encrypt(String plaintext) throws Exception
  21.   {
  22.     MessageDigest md = null;
  23.     try
  24.     {
  25.       md = MessageDigest.getInstance("SHA"); //step 2
  26.     }
  28.     {
  29.       throw new Exception(e.getMessage());
  30.     }
  31.     try
  32.     {
  33.       md.update(plaintext.getBytes("UTF-8")); //step 3
  34.     }
  36.     {
  37.       throw new Exception(e.getMessage());
  38.     }
  39.  
  40.     byte raw[] = md.digest(); //step 4
  41.     String hash = (new BASE64Encoder()).encode(raw); //step 5
  42.     return hash; //step 6
  43.   }
  44.  
  45.   public static synchronized PasswordService getInstance() //step 1
  46.   {
  47.     if(instance == null)
  48.     {
  49.        instance = new PasswordService();
  50.     }
  51.     return instance;
  52.   }
  53. }
  54.  
  55.  
  56.  
  57.  
  58. PasswordUtil.java
  59.  
  60.  
  61.  
  62. public final class PasswordUtil
  63. {
  64.          private PasswordUtil()
  65.          {
  66.          }
  67.                 public static void main(String a[]) throws Exception
  68.                 {
  69.                  PasswordService ps=new PasswordService();
  70.                  System.out.println(ps.encrypt("srinivaa"));
  71.                  }
  72. }
  73.  
  74.    
  75.  
  76.  
  77.  
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Comments

It is very good...and super
Comment posted by: rajkumar on 2011-04-15T14:50:18

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