1 /*
   2  * Copyright (c) 2003, 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
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  23 
  24 /**
  25  * @test
  26  * @bug 4856966
  27  * @summary
  28  * @author Andreas Sterbenz
  29  * @library ..
  30  * @key randomness
  31  */
  32 
  33 import java.util.*;
  34 
  35 import java.security.*;
  36 
  37 public class ReinitDigest extends PKCS11Test {
  38 
  39     public static void main(String[] args) throws Exception {
  40         main(new ReinitDigest());
  41     }
  42 
  43     public void main(Provider p) throws Exception {
  44         if (p.getService("MessageDigest", "MD5") == null) {
  45             System.out.println("Provider does not support MD5, skipping");
  46             return;
  47         }
  48         Random r = new Random();
  49         byte[] data1 = new byte[10 * 1024];
  50         byte[] data2 = new byte[10 * 1024];
  51         r.nextBytes(data1);
  52         r.nextBytes(data2);
  53         MessageDigest md;
  54         md = MessageDigest.getInstance("MD5", "SUN");
  55         byte[] d1 = md.digest(data1);
  56         md = MessageDigest.getInstance("MD5", p);
  57         byte[] d2 = md.digest(data1);
  58         check(d1, d2);
  59         byte[] d3 = md.digest(data1);
  60         check(d1, d3);
  61         md.update(data2);
  62         md.update((byte)0);
  63         md.reset();
  64         byte[] d4 = md.digest(data1);
  65         check(d1, d4);
  66         System.out.println("All tests passed");
  67     }
  68 
  69     private static void check(byte[] d1, byte[] d2) throws Exception {
  70         if (Arrays.equals(d1, d2) == false) {
  71             throw new RuntimeException("Digest mismatch");
  72         }
  73     }
  74 }