1 /*

     2  * Copyright 1998-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 0000000

    27  * @summary MacClone

    28  * @author Jan Luehe

    29  */

    30 import javax.crypto.*;

    31 

    32 public class MacClone {

    33 

    34     public static void main(String[] args) throws Exception {

    35 

    36         //

    37         // Clone uninitialized Mac object

    38         //

    39         Mac mac = Mac.getInstance("HmacSHA1", "SunJCE");

    40         Mac macClone = (Mac)mac.clone();

    41         System.out.println(macClone.getProvider().toString());

    42         System.out.println(macClone.getAlgorithm());

    43         boolean thrown = false;

    44         try {

    45             macClone.update((byte)0x12);

    46         } catch (IllegalStateException ise) {

    47             thrown = true;

    48         }

    49         if (!thrown) {

    50             throw new Exception("Expected IllegalStateException not thrown");

    51         }

    52 

    53         //

    54         // Clone initialized Mac object

    55         //

    56         KeyGenerator kgen = KeyGenerator.getInstance("DES");

    57         SecretKey skey = kgen.generateKey();

    58 

    59         mac = Mac.getInstance("HmacSHA1");

    60         mac.init(skey);

    61         macClone = (Mac)mac.clone();

    62         System.out.println(macClone.getProvider().toString());

    63         System.out.println(macClone.getAlgorithm());

    64         mac.update((byte)0x12);

    65         macClone.update((byte)0x12);

    66         byte[] macFinal = mac.doFinal();

    67         byte[] macCloneFinal = macClone.doFinal();

    68         if (!java.util.Arrays.equals(macFinal, macCloneFinal)) {

    69             throw new Exception("MAC results are different");

    70         }

    71     }

    72 }