1 /*
   2  * Copyright (c) 2002, 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
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 4775971
  27  * @summary test the clone implementation of SHA, SHA-256,
  28  *          SHA-384, SHA-512 MessageDigest implementation.
  29  */
  30 import java.security.*;
  31 import java.util.*;
  32 
  33 public class TestSHAClone {
  34 
  35     private static final String[] ALGOS = {
  36         "SHA", "SHA-256", "SHA-512", "SHA-384"
  37     };
  38 
  39     private static byte[] input1 = {
  40         (byte)0x1, (byte)0x2,  (byte)0x3
  41     };
  42 
  43     private static byte[] input2 = {
  44         (byte)0x4, (byte)0x5,  (byte)0x6
  45     };
  46 
  47     private MessageDigest md;
  48 
  49     private TestSHAClone(String algo, Provider p) throws Exception {
  50         md = MessageDigest.getInstance(algo, p);
  51     }
  52 
  53     private void run() throws Exception {
  54         md.update(input1);
  55         MessageDigest md2 = (MessageDigest) md.clone();
  56         md.update(input2);
  57         md2.update(input2);
  58         if (!Arrays.equals(md.digest(), md2.digest())) {
  59             throw new Exception(md.getAlgorithm() + ": comparison failed");
  60         } else {
  61             System.out.println(md.getAlgorithm() + ": passed");
  62         }
  63     }
  64 
  65 
  66     public static void main(String[] argv) throws Exception {
  67         Provider p = Security.getProvider("SUN");
  68         for (int i=0; i<ALGOS.length; i++) {
  69             TestSHAClone test = new TestSHAClone(ALGOS[i], p);
  70             test.run();
  71         }
  72     }
  73 }