/*
* 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.jboss.resource.security;
import java.security.Principal;
import java.security.acl.Group;
import java.util.Map;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
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.logging.Logger;
import org.jboss.security.Base64Utils;
import org.jboss.security.SimplePrincipal;
import org.jboss.security.Util;
/** An example of how one could encrypt the database password for a jca
connection factory. The corresponding login config entry illustrates
the usage:
<application-policy name = "testPBEIdentityLoginModule">
<authentication>
<login-module code = "org.jboss.resource.security.PBEIdentityLoginModule"
flag = "required">
<module-option name = "principal">sa</module-option>
<module-option name = "userName">sa</module-option>
<!--
output from:
org.jboss.resource.security.PBEIdentityLoginModule
thesecret testPBEIdentityLoginModule abcdefgh 19 PBEWithMD5AndDES
-->
<module-option name = "password">3fp7R/7TMjyTTxhmePdJVk</module-option>
<module-option name = "ignoreMissigingMCF">true</module-option>
<module-option name = "pbealgo">PBEWithMD5AndDES</module-option>
<module-option name = "pbepass">testPBEIdentityLoginModule</module-option>
<module-option name = "salt">abcdefgh</module-option>
<module-option name = "iterationCount">19</module-option>
<module-option name = "managedConnectionFactoryName">jboss.jca:service=LocalTxCM,name=DefaultDS</module-option>
</login-module>
</authentication>
</application-policy>
This uses password based encryption (PBE) with algorithm parameters dervived
from pbealgo, pbepass, salt, iterationCount options:
+ pbealgo - the PBE algorithm to use. Defaults to PBEwithMD5andDES.
+ pbepass - the PBE password to use. Can use the JaasSecurityDomain {CLASS}
and {EXT} syntax to obtain the password from outside of the configuration.
Defaults to "jaas is the way".
+ salt - the PBE salt as a string. Defaults to {1, 7, 2, 9, 3, 11, 4, 13}.
+ iterationCount - the PBE iterationCount. Defaults to 37.
* @author Scott.Stark@jboss.org
* @author <a href="mailto:noel.rocher@jboss.org">Noel Rocher</a> 29, june 2004 username & userName issue
* @version $Revision: 57189 $
*/
public class PBEIdentityLoginModule
extends AbstractPasswordCredentialLoginModule
{
/**
* Class logger
*/
private static final Logger log = Logger.getLogger(SecureIdentityLoginModule.class);
private String username;
private String password;
/** The Blowfish key material */
private char[] pbepass = "jaas is the way".toCharArray();
private String pbealgo = "PBEwithMD5andDES";
private byte[] salt = {1, 7, 2, 9, 3, 11, 4, 13};
private int iterationCount = 37;
private PBEParameterSpec cipherSpec;
public PBEIdentityLoginModule()
{
}
PBEIdentityLoginModule(String algo, char[] pass, byte[] pbesalt, int iter)
{
if( pass != null )
pbepass = pass;
if( algo != null )
pbealgo = algo;
if( pbesalt != null )
salt = pbesalt;
if( iter > 0 )
iterationCount = iter;
}
@SuppressWarnings("unchecked")
@Override
public void initialize(Subject subject, CallbackHandler handler, Map sharedState, Map 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("The user name is a required option");
}
}
password = (String) options.get("password");
if( password == null )
{
throw new IllegalArgumentException("The password is a required option");
}
// Look for the cipher password and algo parameters
String tmp = (String) options.get("pbepass");
if( tmp != null )
{
try
{
pbepass = Util.loadPassword(tmp);
}
catch(Exception e)
{
throw new IllegalStateException(e);
}
}
tmp = (String) options.get("pbealgo");
if( tmp != null )
pbealgo = tmp;
tmp = (String) options.get("salt");
if( tmp != null )
salt = tmp.substring(0, 8).getBytes();
tmp = (String) options.get("iterationCount");
if( tmp != null )
iterationCount = Integer.parseInt(tmp);
}
public boolean login() throws LoginException
{
log.trace("login called");
if( super.login() == true )
return true;
super.loginOk = true;
return true;
}
@SuppressWarnings("unchecked")
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);
cred.setManagedConnectionFactory(getMcf());
SubjectActions.addCredentials(subject, cred);
}
catch(Exception e)
{
log.debug("Failed to decode password", e);
throw new LoginException("Failed to decode password: "+e.getMessage());
}
return true;
}
public boolean abort()
{
username = null;
password = null;
return true;
}
protected Principal getIdentity()
{
log.trace("getIdentity called, username="+username);
Principal principal = new SimplePrincipal(username);
return principal;
}
protected Group[] getRoleSets() throws LoginException
{
Group[] empty = new Group[0];
return empty;
}
private String encode(String secret)
throws Exception
{
// Create the PBE secret key
cipherSpec = new PBEParameterSpec(salt, iterationCount);
PBEKeySpec keySpec = new PBEKeySpec(pbepass);
SecretKeyFactory factory = SecretKeyFactory.getInstance(pbealgo);
SecretKey cipherKey = factory.generateSecret(keySpec);
// Decode the secret
Cipher cipher = Cipher.getInstance(pbealgo);
cipher.init(Cipher.ENCRYPT_MODE, cipherKey, cipherSpec);
byte[] encoding = cipher.doFinal(secret.getBytes());
return Base64Utils.tob64(encoding);
}
private char[] decode(String secret)
throws Exception
{
// Create the PBE secret key
cipherSpec = new PBEParameterSpec(salt, iterationCount);
PBEKeySpec keySpec = new PBEKeySpec(pbepass);
SecretKeyFactory factory = SecretKeyFactory.getInstance(pbealgo);
SecretKey cipherKey = factory.generateSecret(keySpec);
// Decode the secret
byte[] encoding = Base64Utils.fromb64(secret);
Cipher cipher = Cipher.getInstance(pbealgo);
cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherSpec);
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
* [1] = PBE password
* [2] = PBE salt
* [3] = PBE iterationCount
* [4] = PBE algo
* @throws Exception
*/
public static void main(String[] args) throws Exception
{
String algo = null;
char[] pass = "jaas is the way".toCharArray();
byte[] salt = null;
int iter = -1;
if( args.length >= 2 )
pass = args[1].toCharArray();
if( args.length >= 3 )
salt = args[2].getBytes();
if( args.length >= 4 )
iter = Integer.decode(args[3]).intValue();
if( args.length >= 5 )
algo = args[4];
PBEIdentityLoginModule pbe = new PBEIdentityLoginModule(algo, pass, salt, iter);
String encode = pbe.encode(args[0]);
System.out.println("Encoded password: "+encode);
}
}