Java EE (Java Enterprise Edition) General Discussion

Hello Everybody,

I am working on a web site and i need to store password in the encrypted form in the database. I used DES Encryption using javax.crypto API's for this purpose and it is working fine. But when i try to decrypt the password stored in database, it returns null. I am posting the, can anyone please help me out in figuring out what's the problem is.

//DesEncrypter Bean
import java.io.*;
import java.util.*;
import javax.crypto.*;

public class DesEncrypter
{
public String encrypt(String str, Cipher ecipher)
{
try
{
byte[] utf8 = str.getBytes("UTF8");

byte[] enc = ecipher.doFinal(utf8);

return new sun.misc.BASE64Encoder().encode(enc);
}
catch (javax.crypto.BadPaddingException e)
{
}
catch (IllegalBlockSizeException e)
{
}
catch (UnsupportedEncodingException e)
{
}
catch (java.io.IOException e)
{
}
return null;
}

public String decrypt(String str, Cipher dcipher)
{
try
{
byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str);

byte[] utf8 = dcipher.doFinal(dec);

return new String(utf8, "UTF8");
}
catch (javax.crypto.BadPaddingException e) {
}
catch (IllegalBlockSizeException e) {
}
catch (UnsupportedEncodingException e) {
}
catch (java.io.IOException e) {
}
return null;
}
}

//jsp Page
<%@ page import="javax.crypto.*" %>
<%!
Cipher dcipher;
%>
<%
SecretKey key = KeyGenerator.getInstance("DES").generateKey();

try
{
dcipher = Cipher.getInstance("DES");
dcipher.init(Cipher.DECRYPT_MODE, key1);
}
catch (java.security.NoSuchAlgorithmException e) {
}
catch (java.security.InvalidKeyException e) {
}

String Pass = rs.getString("PASSWORD");
String decrypted = Enc.decrypt(Pass, dcipher);

//decrypted contains null, does i need to store key used during encryption.

Any help is appreciated.

Thanks and regards

MSoldier