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/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, 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.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.Certificate;
import org.jboss.security.PicketBoxMessages;
/**
* Utility to handle Java Keystore
*
* @author [email protected]
* @author Peter Skopek (pskopek_at_redhat_dot_com)
* @since Jan 12, 2009
*/
public class KeyStoreUtil
{
/**
* Get the KeyStore
* @param keyStoreFile
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(File keyStoreFile, char[] storePass) throws GeneralSecurityException, IOException
{
return getKeyStore(KeyStore.getDefaultType(), keyStoreFile, storePass);
}
/**
* Get the Keystore given the url to the keystore file as a string
* @param fileURL
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(String fileURL, char[] storePass) throws GeneralSecurityException, IOException
{
return getKeyStore(KeyStore.getDefaultType(), fileURL, storePass);
}
/**
* Get the Keystore given the URL to the keystore
* @param url
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(URL url, char[] storePass) throws GeneralSecurityException, IOException
{
return getKeyStore(KeyStore.getDefaultType(), url, storePass);
}
/**
* Get the Key Store
* Note: This method wants the InputStream to be not null.
* @param ksStream
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
* @throws IllegalArgumentException if ksStream is null
*/
public static KeyStore getKeyStore(InputStream ksStream, char[] storePass) throws GeneralSecurityException,
IOException
{
return getKeyStore(KeyStore.getDefaultType(), ksStream, storePass);
}
/**
* Get the KeyStore
* @param keyStoreType or null for default
* @param keyStoreFile
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(String keyStoreType, File keyStoreFile, char[] storePass) throws GeneralSecurityException, IOException
{
FileInputStream fis = null;
try
{
fis = new FileInputStream(keyStoreFile);
return getKeyStore(keyStoreType, fis, storePass);
}
finally
{
safeClose(fis);
}
}
/**
* Get the Keystore given the url to the keystore file as a string
* @param keyStoreType or null for default
* @param fileURL
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(String keyStoreType, String fileURL, char[] storePass) throws GeneralSecurityException, IOException
{
if (fileURL == null)
throw PicketBoxMessages.MESSAGES.invalidNullArgument("fileURL");
File file = new File(fileURL);
FileInputStream fis = null;
try
{
fis = new FileInputStream(file);
return getKeyStore(keyStoreType, fis, storePass);
}
finally
{
safeClose(fis);
}
}
/**
* Get the Keystore given the URL to the keystore
* @param keyStoreType or null for default
* @param url
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
*/
public static KeyStore getKeyStore(String keyStoreType, URL url, char[] storePass) throws GeneralSecurityException, IOException
{
if (url == null)
throw PicketBoxMessages.MESSAGES.invalidNullArgument("url");
InputStream is = null;
try
{
is = url.openStream();
return getKeyStore(keyStoreType, is, storePass);
}
finally
{
safeClose(is);
}
}
/**
* Get the Key Store
* Note: This method wants the InputStream to be not null.
* @param keyStoreType or null for default
* @param ksStream
* @param storePass
* @return
* @throws GeneralSecurityException
* @throws IOException
* @throws IllegalArgumentException if ksStream is null
*/
public static KeyStore getKeyStore(String keyStoreType, InputStream ksStream, char[] storePass) throws GeneralSecurityException, IOException
{
if (ksStream == null)
throw PicketBoxMessages.MESSAGES.invalidNullArgument("ksStream");
KeyStore ks = KeyStore.getInstance((keyStoreType == null ? KeyStore.getDefaultType() : keyStoreType));
ks.load(ksStream, storePass);
return ks;
}
/**
* Generate a Key Pair
* @param algo (RSA, DSA etc)
* @return
* @throws GeneralSecurityException
*/
public static KeyPair generateKeyPair(String algo) throws GeneralSecurityException
{
KeyPairGenerator kpg = KeyPairGenerator.getInstance(algo);
return kpg.genKeyPair();
}
/**
* Get the Public Key from the keystore
* @param ks
* @param alias
* @param password
* @return
* @throws GeneralSecurityException
*/
public static PublicKey getPublicKey(KeyStore ks, String alias, char[] password) throws KeyStoreException,
NoSuchAlgorithmException, GeneralSecurityException
{
PublicKey publicKey = null;
// Get private key
Key key = ks.getKey(alias, password);
if (key instanceof PrivateKey)
{
// Get certificate of public key
Certificate cert = ks.getCertificate(alias);
// Get public key
publicKey = cert.getPublicKey();
}
// if alias is a certificate alias, get the public key from the certificate.
if (publicKey == null)
{
Certificate cert = ks.getCertificate(alias);
if (cert != null)
publicKey = cert.getPublicKey();
}
return publicKey;
}
/**
* Add a certificate to the KeyStore
* @param keystoreFile
* @param storePass
* @param alias
* @param cert
* @throws GeneralSecurityException
* @throws IOException
*/
public static void addCertificate(File keystoreFile, char[] storePass, String alias, Certificate cert)
throws GeneralSecurityException, IOException
{
addCertificate(KeyStore.getDefaultType(), keystoreFile, storePass, alias, cert);
}
/**
* Add a certificate to the KeyStore
* @param keystoreFile
* @param storePass
* @param alias
* @param cert
* @throws GeneralSecurityException
* @throws IOException
*/
public static void addCertificate(String keyStoreType, File keystoreFile, char[] storePass, String alias, Certificate cert)
throws GeneralSecurityException, IOException
{
KeyStore keystore = getKeyStore(keyStoreType, keystoreFile, storePass);
// Add the certificate
keystore.setCertificateEntry(alias, cert);
// Save the new keystore contents
FileOutputStream out = null;
try
{
out = new FileOutputStream(keystoreFile);
keystore.store(out, storePass);
out.close();
}
finally
{
safeClose(out);
}
}
/**
* Get the key pair from the keystore
* @param keystore
* @param alias
* @param password
* @return
* @throws Exception
*/
public static KeyPair getPrivateKey(KeyStore keystore, String alias, char[] password) throws Exception
{
// Get private key
Key key = keystore.getKey(alias, password);
if (key instanceof PrivateKey)
{
// Get certificate of public key
java.security.cert.Certificate cert = keystore.getCertificate(alias);
// Get public key
PublicKey publicKey = cert.getPublicKey();
// Return a key pair
return new KeyPair(publicKey, (PrivateKey)key);
}
return null;
}
/**
* Create new empty keystore with specified keyStoreType and keyStorePWD
* @param keyStoreType - key store type
* @param keyStorePWD - key store password
* @return
* @throws Exception
*/
public static KeyStore createKeyStore(String keyStoreType, char[] keyStorePWD) throws Exception {
KeyStore ks = KeyStore.getInstance(keyStoreType);
ks.load(null, keyStorePWD);
return ks;
}
private static void safeClose(InputStream fis)
{
try
{
if(fis != null)
{
fis.close();
}
}
catch(Exception e)
{}
}
private static void safeClose(OutputStream os)
{
try
{
if(os != null)
{
os.close();
}
}
catch(Exception e)
{}
}
}
