1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8012900
  27  * @library ../UTIL
  28  * @build TestUtil
  29  * @run main TestCICOWithGCMAndAAD
  30  * @summary Test CipherInputStream/OutputStream with AES GCM mode with AAD.
  31  * @author Valerie Peng
  32  * @key randomness
  33  */
  34 import java.io.*;
  35 import java.security.*;
  36 import java.util.*;
  37 import javax.crypto.*;
  38 
  39 public class TestCICOWithGCMAndAAD {
  40     public static void main(String[] args) throws Exception {
  41         //init Secret Key
  42         KeyGenerator kg = KeyGenerator.getInstance("AES", "SunJCE");
  43         kg.init(128);
  44         SecretKey key = kg.generateKey();
  45 
  46         //Do initialization of the plainText
  47         byte[] plainText = new byte[700];
  48         Random rdm = new Random();
  49         rdm.nextBytes(plainText);
  50 
  51         byte[] aad = new byte[128];
  52         rdm.nextBytes(aad);
  53         byte[] aad2 = aad.clone();
  54         aad2[50]++;
  55 
  56         Cipher encCipher = Cipher.getInstance("AES/GCM/NoPadding", "SunJCE");
  57         encCipher.init(Cipher.ENCRYPT_MODE, key);
  58         encCipher.updateAAD(aad);
  59         Cipher decCipher = Cipher.getInstance("AES/GCM/NoPadding", "SunJCE");
  60         decCipher.init(Cipher.DECRYPT_MODE, key, encCipher.getParameters());
  61         decCipher.updateAAD(aad);
  62 
  63         byte[] recovered = test(encCipher, decCipher, plainText);
  64         if (!Arrays.equals(plainText, recovered)) {
  65             throw new Exception("sameAAD: diff check failed!");
  66         } else System.out.println("sameAAD: passed");
  67 
  68         encCipher.init(Cipher.ENCRYPT_MODE, key);
  69         encCipher.updateAAD(aad2);
  70         recovered = test(encCipher, decCipher, plainText);
  71         if (recovered != null && recovered.length != 0) {
  72             throw new Exception("diffAAD: no data should be returned!");
  73         } else System.out.println("diffAAD: passed");
  74    }
  75 
  76    private static byte[] test(Cipher encCipher, Cipher decCipher, byte[] plainText)
  77             throws Exception {
  78         //init cipher streams
  79         ByteArrayInputStream baInput = new ByteArrayInputStream(plainText);
  80         CipherInputStream ciInput = new CipherInputStream(baInput, encCipher);
  81         ByteArrayOutputStream baOutput = new ByteArrayOutputStream();
  82         CipherOutputStream ciOutput = new CipherOutputStream(baOutput, decCipher);
  83 
  84         //do test
  85         byte[] buffer = new byte[200];
  86         int len = ciInput.read(buffer);
  87         System.out.println("read " + len + " bytes from input buffer");
  88 
  89         while (len != -1) {
  90             ciOutput.write(buffer, 0, len);
  91             System.out.println("wite " + len + " bytes to output buffer");
  92             len = ciInput.read(buffer);
  93             if (len != -1) {
  94                 System.out.println("read " + len + " bytes from input buffer");
  95             } else {
  96                 System.out.println("finished reading");
  97             }
  98         }
  99 
 100         ciOutput.flush();
 101         ciInput.close();
 102         ciOutput.close();
 103 
 104         return baOutput.toByteArray();
 105     }
 106 }