/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.picketbox.datasource.security;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.Principal;
import java.security.acl.Group;
import java.util.Map;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import javax.resource.spi.security.PasswordCredential;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginException;
import org.jboss.security.PicketBoxLogger;
import org.jboss.security.PicketBoxMessages;
import org.jboss.security.SimplePrincipal;
/** An example of how one could encrypt the database password for a jca
connection factory. The corresponding
<application-policy name = "HsqlDbRealm">
<authentication>
<login-module code = "org.jboss.resource.security.SecureIdentityLoginMdule"
flag = "required">
<module-option name = "userName">sa</module-option>
<module-option name = "password">-207a6df87216de44</module-option>
<module-option name = "managedConnectionFactoryName">jboss.jca:servce=LocalTxCM,name=DefaultDS</module-option>
</login-module>
</authentication>
</application-policy>
This uses a hard-coded cipher algo of Blowfish, and key derived from the
phrase 'jaas is the way'. Adjust to your requirements.
* @author Scott.Stark@jboss.org
* @author <a href="mailto:noel.rocher@jboss.org">Noel Rocher</a> 29, june 2004 username & userName issue
* @version $Revision: 71545 $
*/
@SuppressWarnings("unchecked")
public class SecureIdentityLoginModule
extends AbstractPasswordCredentialLoginModule
{
private String username;
private String password;
@Override
public void initialize(Subject subject, CallbackHandler handler, Map<String, ?> sharedState, Map<String, ?> options)
{
super.initialize(subject, handler, sharedState, options);
// NR : we keep this username for compatibility
username = (String) options.get("username");
if (username == null)
{
// NR : try with userName
username = (String) options.get("userName");
if (username == null)
{
throw new IllegalArgumentException(PicketBoxMessages.MESSAGES.missingRequiredModuleOptionMessage("username"));
}
}
password = (String) options.get("password");
if (password == null)
{
throw new IllegalArgumentException(PicketBoxMessages.MESSAGES.missingRequiredModuleOptionMessage("password"));
}
}
@Override
public boolean login() throws LoginException
{
PicketBoxLogger.LOGGER.traceBeginLogin();
if (super.login())
return true;
super.loginOk = true;
return true;
}
@Override
public boolean commit() throws LoginException
{
Principal principal = new SimplePrincipal(username);
SubjectActions.addPrincipals(subject, principal);
sharedState.put("javax.security.auth.login.name", username);
// Decode the encrypted password
try
{
char[] decodedPassword = decode(password);
PasswordCredential cred = new PasswordCredential(username, decodedPassword);
SubjectActions.addCredentials(subject, cred);
}
catch(Exception e)
{
LoginException le = new LoginException(e.getLocalizedMessage());
le.initCause(e);
throw le;
}
return true;
}
@Override
public boolean abort()
{
username = null;
password = null;
return true;
}
protected Principal getIdentity()
{
PicketBoxLogger.LOGGER.traceBeginGetIdentity(username);
Principal principal = new SimplePrincipal(username);
return principal;
}
protected Group[] getRoleSets() throws LoginException
{
return new Group[] {};
}
private static String encode(String secret)
throws NoSuchPaddingException, NoSuchAlgorithmException,
InvalidKeyException, BadPaddingException, IllegalBlockSizeException
{
byte[] kbytes = "jaas is the way".getBytes();
SecretKeySpec key = new SecretKeySpec(kbytes, "Blowfish");
Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encoding = cipher.doFinal(secret.getBytes());
BigInteger n = new BigInteger(encoding);
return n.toString(16);
}
private static char[] decode(String secret)
throws NoSuchPaddingException, NoSuchAlgorithmException,
InvalidKeyException, BadPaddingException, IllegalBlockSizeException
{
byte[] kbytes = "jaas is the way".getBytes();
SecretKeySpec key = new SecretKeySpec(kbytes, "Blowfish");
BigInteger n = new BigInteger(secret, 16);
byte[] encoding = n.toByteArray();
//SECURITY-344: fix leading zeros
if (encoding.length % 8 != 0)
{
int length = encoding.length;
int newLength = ((length / 8) + 1) * 8;
int pad = newLength - length; //number of leading zeros
byte[] old = encoding;
encoding = new byte[newLength];
for (int i = old.length - 1; i >= 0; i--)
{
encoding[i + pad] = old[i];
}
//SECURITY-563: handle negative numbers
if (n.signum() == -1)
{
for (int i = 0; i < newLength - length; i++)
{
encoding[i] = (byte) -1;
}
}
}
Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decode = cipher.doFinal(encoding);
return new String(decode).toCharArray();
}
/** Main entry point to encrypt a password using the hard-coded pass phrase
*
* @param args - [0] = the password to encode
* @throws Exception
*/
public static void main(String[] args) throws Exception
{
String encode = encode(args[0]);
System.out.println("Encoded password: " + encode);
}
}