1 /*
   2  * Copyright (c) 2003, 2018, 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 4856966
  27  * @summary Test the Signature.update(ByteBuffer) method
  28  * @author Andreas Sterbenz
  29  * @library /test/lib ..
  30  * @key randomness
  31  * @modules jdk.crypto.cryptoki
  32  * @run main/othervm ByteBuffers
  33  * @run main/othervm ByteBuffers sm
  34  */
  35 
  36 import java.nio.ByteBuffer;
  37 import java.security.KeyPair;
  38 import java.security.KeyPairGenerator;
  39 import java.security.Provider;
  40 import java.security.Signature;
  41 import java.util.Random;
  42 
  43 public class ByteBuffers extends PKCS11Test {
  44 
  45     public static void main(String[] args) throws Exception {
  46         main(new ByteBuffers(), args);
  47     }
  48 
  49     @Override
  50     public void main(Provider p) throws Exception {
  51 
  52         Random random = new Random();
  53         int n = 10 * 1024;
  54         byte[] t = new byte[n];
  55         random.nextBytes(t);
  56 
  57         KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", p);
  58         kpg.initialize(512);
  59         KeyPair kp = kpg.generateKeyPair();
  60 
  61         Signature sig = Signature.getInstance("MD5withRSA", p);
  62         sig.initSign(kp.getPrivate());
  63         sig.update(t);
  64         byte[] signature = sig.sign();
  65 
  66         sig.initVerify(kp.getPublic());
  67 
  68         // test 1: ByteBuffer with an accessible backing array
  69         ByteBuffer b1 = ByteBuffer.allocate(n + 256);
  70         b1.position(random.nextInt(256));
  71         b1.limit(b1.position() + n);
  72         ByteBuffer b2 = b1.slice();
  73         b2.put(t);
  74         b2.clear();
  75         verify(sig, signature, b2, random);
  76 
  77         // test 2: direct ByteBuffer
  78         ByteBuffer b3 = ByteBuffer.allocateDirect(t.length);
  79         b3.put(t);
  80         b3.clear();
  81         verify(sig, signature, b3, random);
  82 
  83         // test 3: ByteBuffer without an accessible backing array
  84         b2.clear();
  85         ByteBuffer b4 = b2.asReadOnlyBuffer();
  86         verify(sig, signature, b4, random);
  87 
  88         System.out.println("All tests passed");
  89     }
  90 
  91     private static void verify(Signature sig, byte[] signature, ByteBuffer b, Random random) throws Exception {
  92         int lim = b.limit();
  93         b.limit(random.nextInt(lim));
  94         sig.update(b);
  95         if (b.hasRemaining()) {
  96             throw new Exception("Buffer not consumed");
  97         }
  98         b.limit(lim);
  99         sig.update(b);
 100         if (b.hasRemaining()) {
 101             throw new Exception("Buffer not consumed");
 102         }
 103         if (sig.verify(signature) == false) {
 104             throw new Exception("Signature did not verify");
 105         }
 106     }
 107 }