1 /*
   2  * Copyright (c) 1998, 2016, 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 any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8048603
  27  * @summary Check if doFinal and update operation result in same Mac
  28  * @author Yu-Ching Valerie Peng, Bill Situ, Alexander Fomin
  29  * @library ..
  30  * @modules jdk.crypto.token
  31  * @run main/othervm MacSameTest
  32  * @run main/othervm MacSameTest sm
  33  * @key randomness
  34  */
  35 
  36 import java.security.InvalidKeyException;
  37 import java.security.NoSuchAlgorithmException;
  38 import java.security.NoSuchProviderException;
  39 import java.security.Provider;
  40 import java.security.SecureRandom;
  41 import java.util.List;
  42 import javax.crypto.Mac;
  43 import javax.crypto.spec.SecretKeySpec;
  44 
  45 public class MacSameTest extends PKCS11Test {
  46 
  47     private static final int MESSAGE_SIZE = 25;
  48     private static final int OFFSET = 5;
  49     private static final int KEY_SIZE = 70;
  50 
  51     /**
  52      * Initialize a message, instantiate a Mac object,
  53      * initialize the object with a SecretKey,
  54      * feed the message into the Mac object
  55      * all at once and get the output MAC as result1.
  56      * Reset the Mac object, chop the message into three pieces,
  57      * feed into the Mac object sequentially, and get the output MAC as result2.
  58      * Finally, compare result1 and result2 and see if they are the same.
  59      *
  60      * @param args the command line arguments
  61      */
  62     public static void main(String[] args) throws Exception {
  63         main(new MacSameTest(), args);
  64     }
  65 
  66     @Override
  67     public void main(Provider p) {
  68         List<String> algorithms = getSupportedAlgorithms("Mac", "Hmac", p);
  69         boolean success = true;
  70         for (String alg : algorithms) {
  71             try {
  72                 doTest(alg, p);
  73             } catch (Exception e) {
  74                 System.out.println("Unexpected exception: " + e);
  75                 e.printStackTrace();
  76                 success = false;
  77             }
  78         }
  79 
  80         if (!success) {
  81             throw new RuntimeException("Test failed");
  82         }
  83     }
  84 
  85     private void doTest(String algo, Provider provider)
  86             throws NoSuchAlgorithmException, NoSuchProviderException,
  87             InvalidKeyException {
  88         System.out.println("Test " + algo);
  89         Mac mac;
  90         try {
  91             mac = Mac.getInstance(algo, provider);
  92         } catch (NoSuchAlgorithmException nsae) {
  93             if ("SunPKCS11-Solaris".equals(provider.getName())) {
  94                 // depending on Solaris configuration,
  95                 // it can support HMAC or not with Mac
  96                 System.out.println("Expected NoSuchAlgorithmException thrown: "
  97                         + nsae);
  98                 return;
  99             }
 100             throw nsae;
 101         }
 102 
 103         byte[] plain = new byte[MESSAGE_SIZE];
 104         for (int i = 0; i < MESSAGE_SIZE; i++) {
 105             plain[i] = (byte) (i % 256);
 106         }
 107 
 108         byte[] tail = new byte[plain.length - OFFSET];
 109         System.arraycopy(plain, OFFSET, tail, 0, tail.length);
 110 
 111         SecureRandom srdm = new SecureRandom();
 112         byte[] keyVal = new byte[KEY_SIZE];
 113         srdm.nextBytes(keyVal);
 114         SecretKeySpec keySpec = new SecretKeySpec(keyVal, "HMAC");
 115 
 116         mac.init(keySpec);
 117         byte[] result1 = mac.doFinal(plain);
 118 
 119         mac.reset();
 120         mac.update(plain[0]);
 121         mac.update(plain, 1, OFFSET - 1);
 122         byte[] result2 = mac.doFinal(tail);
 123 
 124         if (!java.util.Arrays.equals(result1, result2)) {
 125             throw new RuntimeException("result1 and result2 are not the same");
 126         }
 127     }
 128 
 129 }