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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
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* If you wish your version of this file to be governed by only the CDDL or
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* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
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*/
package com.sun.faces.util;
import java.nio.charset.Charset;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.faces.FacesException;
import java.security.SecureRandom;
import java.util.SortedMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.xml.bind.DatatypeConverter;
/**
* This utility class is to provide both encryption and
* decryption Ciphers to ResponseStateManager
* implementations wishing to provide encryption support.
*
* The algorithm used to encrypt byte array is AES with CBC.
*
* Original author Inderjeet Singh, J2EE Blue Prints Team. Modified to suit JSF
* needs.
*/
public final class ByteArrayGuardAESCTR {
// Log instance for this class
private static final Logger LOGGER = FacesLogger.RENDERKIT.getLogger();
private static final int KEY_LENGTH = 128;
private static final int IV_LENGTH = 16;
private static final String KEY_ALGORITHM = "AES";
private static final String CIPHER_CODE = "AES/CTR/NoPadding";
private SecretKey sk;
private Charset utf8;
// ------------------------------------------------------------ Constructors
public ByteArrayGuardAESCTR() {
try {
setupKeyAndCharset();
} catch (Exception e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE,
"Unexpected exception initializing encryption."
+ " No encryption will be performed.",
e);
}
System.err.println("ERROR: Initializing Ciphers");
}
}
// ---------------------------------------------------------- Public Methods
/**
* This method:
* Encrypts bytes using a cipher.
* Generates MAC for intialization vector of the cipher
* Generates MAC for encrypted data
* Returns a byte array consisting of the following concatenated together:
* |MAC for cnrypted Data | MAC for Init Vector | Encrypted Data |
* @param bytes The byte array to be encrypted.
* @return the encrypted byte array.
*/
public String encrypt(String value) {
String securedata = null;
byte[] bytes = value.getBytes(utf8);
try {
SecureRandom rand = new SecureRandom();
byte[] iv = new byte[16];
rand.nextBytes(iv);
IvParameterSpec ivspec = new IvParameterSpec(iv);
Cipher encryptCipher = Cipher.getInstance(CIPHER_CODE);
encryptCipher.init(Cipher.ENCRYPT_MODE, sk, ivspec);
// encrypt the plaintext
byte[] encdata = encryptCipher.doFinal(bytes);
byte[] temp = concatBytes(iv, encdata);
// Base64 encode the encrypted bytes
securedata = DatatypeConverter.printBase64Binary(temp);
} catch (Exception e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE,
"Unexpected exception initializing encryption."
+ " No encryption will be performed.",
e);
}
return null;
}
return securedata;
}
public String decrypt(String value) throws InvalidKeyException {
byte[] bytes = DatatypeConverter.parseBase64Binary(value);;
try {
byte[] iv = new byte[16];
System.arraycopy(bytes, 0, iv, 0, iv.length);
IvParameterSpec ivspec = new IvParameterSpec(iv);
Cipher decryptCipher = Cipher.getInstance(CIPHER_CODE);
decryptCipher.init(Cipher.DECRYPT_MODE, sk, ivspec);
byte[] encBytes = new byte[bytes.length - 16];
System.arraycopy(bytes, 16, encBytes, 0, encBytes.length);
byte[] plaindata = decryptCipher.doFinal(encBytes);
for (byte cur : plaindata) {
// Values < 0 cause the conversion to text to fail.
if (cur < 0 || cur > Byte.MAX_VALUE) {
throw new InvalidKeyException("Invalid characters in decrypted value");
}
}
return new String(plaindata, utf8);
} catch (NoSuchAlgorithmException nsae) {
throw new InvalidKeyException(nsae);
} catch (NoSuchPaddingException nspe) {
throw new InvalidKeyException(nspe);
} catch (InvalidAlgorithmParameterException iape) {
throw new InvalidKeyException(iape);
} catch (IllegalBlockSizeException ibse) {
throw new InvalidKeyException(ibse);
} catch (BadPaddingException bpe) {
throw new InvalidKeyException(bpe);
}
}
// --------------------------------------------------------- Private Methods
private void setupKeyAndCharset() {
try {
InitialContext context = new InitialContext();
String encodedKeyArray = (String) context.lookup("java:comp/env/jsf/FlashSecretKey");
if (null != encodedKeyArray) {
byte[] keyArray = DatatypeConverter.parseBase64Binary(encodedKeyArray);
if (keyArray.length < 17) {
throw new FacesException("key must be at least 16 bytes long.");
}
sk = new SecretKeySpec(keyArray, KEY_ALGORITHM);
}
} catch(NamingException exception) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, "Unable to find the encoded key.", exception);
}
} catch (Exception e) {
throw new FacesException(e);
}
if (null == sk) {
try {
KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
kg.init(KEY_LENGTH); // 256 if you're using the Unlimited Policy Files
sk = kg.generateKey();
} catch (Exception e) {
throw new FacesException(e);
}
}
SortedMap availableCharsets = Charset.availableCharsets();
if (availableCharsets.containsKey("UTF-8")) {
utf8 = availableCharsets.get("UTF-8");
} else if (availableCharsets.containsKey("UTF8")) {
utf8 = availableCharsets.get("UTF8");
} else {
throw new FacesException("Unable to get UTF-8 Charset.");
}
}
/**
* This method concatenates two byte arrays
* @return a byte array of array1||array2
* @param array1 first byte array to be concatenated
* @param array2 second byte array to be concatenated
*/
private static byte[] concatBytes(byte[] array1, byte[] array2) {
byte[] cBytes = new byte[array1.length + array2.length];
try {
System.arraycopy(array1, 0, cBytes, 0, array1.length);
System.arraycopy(array2, 0, cBytes, array1.length, array2.length);
} catch(Exception e) {
throw new FacesException(e);
}
return cBytes;
}
}