1 /*
   2  * Copyright (c) 2010, 2017, 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 6837847
  27  * @summary Ensure a deserialized PKCS#11 SecureRandom is functional.
  28  * @library ..
  29  * @modules jdk.crypto.cryptoki
  30  */
  31 
  32 import java.io.ByteArrayInputStream;
  33 import java.io.ByteArrayOutputStream;
  34 import java.io.ObjectInputStream;
  35 import java.io.ObjectOutputStream;
  36 import java.security.NoSuchAlgorithmException;
  37 import java.security.Provider;
  38 import java.security.SecureRandom;
  39 import java.security.Security;
  40 
  41 public class TestDeserialization extends PKCS11Test {
  42 
  43     public void main(Provider p) throws Exception {
  44         // Skip this test for providers not found by java.security.Security
  45         if (Security.getProvider(p.getName()) != p) {
  46             System.out.println("Skip test for provider " + p.getName());
  47             return;
  48         }
  49         SecureRandom r;
  50         try {
  51             r = SecureRandom.getInstance("PKCS11", p);
  52             System.out.println("SecureRandom instance " + r);
  53         } catch (NoSuchAlgorithmException e) {
  54             System.out.println("Provider " + p +
  55                                " does not support SecureRandom, skipping");
  56             e.printStackTrace();
  57             return;
  58         }
  59         r.setSeed(System.currentTimeMillis());
  60         byte[] buf = new byte[16];
  61         byte[] ser = toByteArray(r);
  62         System.out.println("Serialized Len = " + ser.length);
  63         SecureRandom r2 = fromByteArray(ser);
  64         System.out.println("Deserialized into " + r2);
  65         r2.nextBytes(buf);
  66         System.out.println("Done");
  67     }
  68 
  69     public static void main(String[] args) throws Exception {
  70         main(new TestDeserialization());
  71     }
  72 
  73     private byte[] toByteArray(SecureRandom r) throws Exception {
  74         ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
  75         ObjectOutputStream outStream = null;
  76         try {
  77             outStream = new ObjectOutputStream(out);
  78             outStream.writeObject(r);
  79             return out.toByteArray();
  80         } finally {
  81             if (outStream != null) {
  82                 outStream.close();
  83             }
  84         }
  85     }
  86 
  87     private SecureRandom fromByteArray(byte[] buf) throws Exception {
  88         SecureRandom r = null;
  89         ByteArrayInputStream is = new ByteArrayInputStream(buf);
  90         ObjectInputStream ois = null;
  91         try {
  92             ois = new ObjectInputStream(is);
  93             r = (SecureRandom) ois.readObject();
  94         } finally {
  95             if (ois != null) {
  96                 ois.close();
  97             }
  98         }
  99         return r;
 100     }
 101 }