1 /*

     2  * Copyright (c) 2001, 2015, 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 8048604

    27  * @summary This test checks boundary conditions for testing

    28  *          ShortBufferException.

    29  */

    30 import static java.lang.System.out;

    31 

    32 import java.security.AlgorithmParameters;

    33 import java.security.Provider;

    34 import java.security.Security;

    35 import javax.crypto.BadPaddingException;

    36 import javax.crypto.Cipher;

    37 import javax.crypto.KeyGenerator;

    38 import javax.crypto.SecretKey;

    39 

    40 public class TextPKCS5PaddingTest {

    41     /**

    42      * Test plain text.

    43      */

    44     private static final byte[] PLAIN_TEXT = {

    45         0b10001, 0b10001, 0b10001, 0b10001,

    46         0b10001, 0b10001, 0b11,    0b11

    47     };

    48 

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

    50         Provider provider = Security.getProvider("SunJCE");

    51         if (provider == null) {

    52             throw new RuntimeException("SunJCE provider not exist");

    53         }

    54         // generate no-padding cipher with secret key

    55         Cipher c = Cipher.getInstance("DES/CBC/NoPadding", provider);

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

    57         SecretKey skey = kgen.generateKey();

    58         // this is the improperly padded plaintext

    59 

    60         c.init(Cipher.ENCRYPT_MODE, skey);

    61         // encrypt plaintext

    62         byte[] cipher = c.doFinal(PLAIN_TEXT);

    63         AlgorithmParameters params = c.getParameters();

    64         // generate cipher that enforces PKCS5 padding

    65         c = Cipher.getInstance("DES/CBC/PKCS5Padding", provider);

    66         c.init(Cipher.DECRYPT_MODE, skey, params);

    67         try {

    68             c.doFinal(cipher);

    69             throw new RuntimeException(

    70                     "ERROR: Expected BadPaddingException not thrown");

    71         } catch (BadPaddingException expected) {

    72             out.println("Expected BadPaddingException thrown");

    73         }

    74 

    75     }

    76 }