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.
   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 6414899
  27  * @summary Ensure the cloning functionality works.
  28  * @author Valerie Peng
  29  * @library ..
  30  * @key randomness
  31  */
  32 
  33 import java.util.*;
  34 
  35 import java.security.*;
  36 
  37 public class TestCloning extends PKCS11Test {
  38 
  39     private static final String[] ALGOS = {
  40         "MD2", "MD5", "SHA1", "SHA-224", "SHA-256", "SHA-384", "SHA-512"
  41     };
  42 
  43     public static void main(String[] args) throws Exception {
  44         main(new TestCloning());
  45     }
  46 
  47     private static final byte[] data1 = new byte[10];
  48     private static final byte[] data2 = new byte[10*1024];
  49 
  50 
  51     public void main(Provider p) throws Exception {
  52         Random r = new Random();
  53         byte[] data1 = new byte[10];
  54         byte[] data2 = new byte[2*1024];
  55         r.nextBytes(data1);
  56         r.nextBytes(data2);
  57         System.out.println("Testing against provider " + p.getName());
  58         for (int i = 0; i < ALGOS.length; i++) {
  59             if (p.getService("MessageDigest", ALGOS[i]) == null) {
  60                 System.out.println(ALGOS[i] + " is not supported, skipping");
  61                 continue;
  62             } else {
  63                 System.out.println("Testing " + ALGOS[i] + " of " + p.getName());
  64                 MessageDigest md = MessageDigest.getInstance(ALGOS[i], p);
  65                 try {
  66                     md = testCloning(md, p);
  67                     // repeat the test again after generating digest once
  68                     for (int j = 0; j < 10; j++) {
  69                         md = testCloning(md, p);
  70                     }
  71                 } catch (Exception ex) {
  72                     if (ALGOS[i] == "MD2" &&
  73                         p.getName().equalsIgnoreCase("SunPKCS11-NSS")) {
  74                         // known bug in NSS; ignore for now
  75                         System.out.println("Ignore Known bug in MD2 of NSS");
  76                         continue;
  77                     }
  78                     throw ex;
  79                 }
  80             }
  81         }
  82     }
  83 
  84     private static MessageDigest testCloning(MessageDigest mdObj, Provider p)
  85         throws Exception {
  86 
  87         // copy#0: clone at state BLANK w/o any data
  88         MessageDigest mdCopy0 = (MessageDigest) mdObj.clone();
  89 
  90         // copy#1: clone again at state BUFFERED w/ very short data
  91         mdObj.update(data1);
  92         mdCopy0.update(data1);
  93         MessageDigest mdCopy1 = (MessageDigest) mdObj.clone();
  94 
  95         // copy#2: clone again after updating it w/ long data to trigger
  96         // the state into INIT
  97         mdObj.update(data2);
  98         mdCopy0.update(data2);
  99         mdCopy1.update(data2);
 100         MessageDigest mdCopy2 = (MessageDigest) mdObj.clone();
 101 
 102         // copy#3: clone again after updating it w/ very short data
 103         mdObj.update(data1);
 104         mdCopy0.update(data1);
 105         mdCopy1.update(data1);
 106         mdCopy2.update(data1);
 107         MessageDigest mdCopy3 = (MessageDigest) mdObj.clone();
 108 
 109         // copy#4: clone again after updating it w/ long data
 110         mdObj.update(data2);
 111         mdCopy0.update(data2);
 112         mdCopy1.update(data2);
 113         mdCopy2.update(data2);
 114         mdCopy3.update(data2);
 115         MessageDigest mdCopy4 = (MessageDigest) mdObj.clone();
 116 
 117         // check digest equalities
 118         byte[] answer = mdObj.digest();
 119         byte[] result0 = mdCopy0.digest();
 120         byte[] result1 = mdCopy1.digest();
 121         byte[] result2 = mdCopy2.digest();
 122         byte[] result3 = mdCopy3.digest();
 123         byte[] result4 = mdCopy4.digest();
 124 
 125 
 126         check(answer, result0, "copy0");
 127         check(answer, result1, "copy1");
 128         check(answer, result2, "copy2");
 129         check(answer, result3, "copy3");
 130         check(answer, result4, "copy4");
 131 
 132         return mdCopy3;
 133     }
 134 
 135     private static void check(byte[] d1, byte[] d2, String copyName)
 136             throws Exception {
 137         if (Arrays.equals(d1, d2) == false) {
 138             throw new RuntimeException(copyName + " digest mismatch!");
 139         }
 140     }
 141 }
 142 
--- EOF ---