1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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 6414899
  27  * @summary Ensure the cloning functionality works.
  28  * @author Valerie Peng
  29  * @library ..

  30  */
  31 
  32 import java.util.*;
  33 
  34 import java.security.*;
  35 
  36 public class TestCloning extends PKCS11Test {
  37 
  38     private static final String[] ALGOS = {
  39         "MD2", "MD5", "SHA1", "SHA-224", "SHA-256", "SHA-384", "SHA-512"
  40     };
  41 
  42     public static void main(String[] args) throws Exception {
  43         main(new TestCloning());
  44     }
  45 
  46     private static final byte[] data1 = new byte[10];
  47     private static final byte[] data2 = new byte[10*1024];
  48 
  49 
  50     public void main(Provider p) throws Exception {
  51         Random r = new Random();
  52         byte[] data1 = new byte[10];
  53         byte[] data2 = new byte[2*1024];
  54         r.nextBytes(data1);
  55         r.nextBytes(data2);
  56         System.out.println("Testing against provider " + p.getName());
  57         for (int i = 0; i < ALGOS.length; i++) {
  58             if (p.getService("MessageDigest", ALGOS[i]) == null) {
  59                 System.out.println(ALGOS[i] + " is not supported, skipping");
  60                 continue;
  61             } else {
  62                 System.out.println("Testing " + ALGOS[i] + " of " + p.getName());
  63                 MessageDigest md = MessageDigest.getInstance(ALGOS[i], p);
  64                 try {
  65                     md = testCloning(md, p);
  66                     // repeat the test again after generating digest once
  67                     for (int j = 0; j < 10; j++) {
  68                         md = testCloning(md, p);
  69                     }
  70                 } catch (Exception ex) {
  71                     if (ALGOS[i] == "MD2" &&
  72                         p.getName().equalsIgnoreCase("SunPKCS11-NSS")) {
  73                         // known bug in NSS; ignore for now
  74                         System.out.println("Ignore Known bug in MD2 of NSS");
  75                         continue;
  76                     }
  77                     throw ex;
  78                 }
  79             }
  80         }
  81     }
  82 
  83     private static MessageDigest testCloning(MessageDigest mdObj, Provider p)
  84         throws Exception {
  85 
  86         // copy#0: clone at state BLANK w/o any data
  87         MessageDigest mdCopy0 = (MessageDigest) mdObj.clone();
  88 
  89         // copy#1: clone again at state BUFFERED w/ very short data
  90         mdObj.update(data1);
  91         mdCopy0.update(data1);
  92         MessageDigest mdCopy1 = (MessageDigest) mdObj.clone();
  93 
  94         // copy#2: clone again after updating it w/ long data to trigger
  95         // the state into INIT
  96         mdObj.update(data2);
  97         mdCopy0.update(data2);
  98         mdCopy1.update(data2);
  99         MessageDigest mdCopy2 = (MessageDigest) mdObj.clone();
 100 
 101         // copy#3: clone again after updating it w/ very short data
 102         mdObj.update(data1);
 103         mdCopy0.update(data1);
 104         mdCopy1.update(data1);
 105         mdCopy2.update(data1);
 106         MessageDigest mdCopy3 = (MessageDigest) mdObj.clone();
 107 
 108         // copy#4: clone again after updating it w/ long data
 109         mdObj.update(data2);
 110         mdCopy0.update(data2);
 111         mdCopy1.update(data2);
 112         mdCopy2.update(data2);
 113         mdCopy3.update(data2);
 114         MessageDigest mdCopy4 = (MessageDigest) mdObj.clone();
 115 
 116         // check digest equalities
 117         byte[] answer = mdObj.digest();
 118         byte[] result0 = mdCopy0.digest();
 119         byte[] result1 = mdCopy1.digest();
 120         byte[] result2 = mdCopy2.digest();
 121         byte[] result3 = mdCopy3.digest();
 122         byte[] result4 = mdCopy4.digest();
 123 
 124 
 125         check(answer, result0, "copy0");
 126         check(answer, result1, "copy1");
 127         check(answer, result2, "copy2");
 128         check(answer, result3, "copy3");
 129         check(answer, result4, "copy4");
 130 
 131         return mdCopy3;
 132     }
 133 
 134     private static void check(byte[] d1, byte[] d2, String copyName)
 135             throws Exception {
 136         if (Arrays.equals(d1, d2) == false) {
 137             throw new RuntimeException(copyName + " digest mismatch!");
 138         }
 139     }
 140 }
 141 
--- EOF ---