1 /*
   2  * Copyright (c) 2014, 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 8014374
  27  * @summary Ensure key wrap/unwrap works using AES/GCM/NoPadding
  28  * @key randomness
  29  */
  30 
  31 import java.io.*;
  32 import java.security.*;
  33 import java.security.spec.*;
  34 import java.util.*;
  35 import javax.crypto.*;
  36 import javax.crypto.spec.*;
  37 
  38 public class TestGCMKeyWrap extends UcryptoTest {
  39 
  40     public static void main(String[] args) throws Exception {
  41         main(new TestGCMKeyWrap(), null);
  42     }
  43 
  44     public void doTest(Provider p) throws Exception {
  45         // check if GCM support exists
  46         try {
  47             Cipher.getInstance("AES/GCM/NoPadding", p);
  48         } catch (NoSuchAlgorithmException nsae) {
  49             System.out.println("Skipping Test due to no GCM support");
  50             return;
  51         }
  52 
  53         Random rdm = new Random();
  54 
  55         //init Secret Key
  56         byte[] keyValue = new byte[16];
  57         rdm.nextBytes(keyValue);
  58         SecretKey key = new SecretKeySpec(keyValue, "AES");
  59 
  60         Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding", p);
  61         cipher.init(Cipher.WRAP_MODE, key);
  62 
  63         byte[] wrappedKey = cipher.wrap(key);
  64 
  65         try { // make sure ISE is thrown if re-using the same key/IV
  66             wrappedKey = cipher.wrap(key);
  67             throw new Exception("FAIL: expected ISE not thrown");
  68         } catch(IllegalStateException ise){
  69             System.out.println("Expected ISE thrown for re-wrapping");
  70         }
  71 
  72         //unwrap the key
  73         AlgorithmParameters params = cipher.getParameters();
  74         cipher.init(Cipher.UNWRAP_MODE, key, params);
  75         Key unwrappedKey = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
  76 
  77         //check if we can unwrap second time
  78         unwrappedKey = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
  79 
  80         // Comparison
  81         if (!Arrays.equals(key.getEncoded(), unwrappedKey.getEncoded())) {
  82             throw new Exception("FAIL: keys are not equal");
  83         } else {
  84             System.out.println("Passed key equality check");
  85         }
  86     }
  87 }