1 /*

     2  * Copyright (c) 2013, 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 8012637

    27  * @library ../UTIL

    28  * @build TestUtil

    29  * @run main TestCICOWithGCM

    30  * @summary Test CipherInputStream/OutputStream with AES GCM mode.

    31  * @author Valerie Peng

    32  */

    33 

    34 import java.security.*;

    35 import javax.crypto.*;

    36 import javax.crypto.spec.*;

    37 import java.math.*;

    38 import java.io.*;

    39 import com.sun.crypto.provider.*;

    40 

    41 import java.util.*;

    42 

    43 public class TestCICOWithGCM {

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

    45         //init Secret Key

    46         KeyGenerator kg = KeyGenerator.getInstance("AES", "SunJCE");

    47         kg.init(128);

    48         SecretKey key = kg.generateKey();

    49 

    50         //do initialization of the plainText

    51         byte[] plainText = new byte[800];

    52         Random rdm = new Random();

    53         rdm.nextBytes(plainText);

    54 

    55         //init ciphers

    56         Cipher encCipher = Cipher.getInstance("AES/GCM/NoPadding", "SunJCE");

    57         encCipher.init(Cipher.ENCRYPT_MODE, key);

    58         Cipher decCipher = Cipher.getInstance("AES/GCM/NoPadding", "SunJCE");

    59         decCipher.init(Cipher.DECRYPT_MODE, key, encCipher.getParameters());

    60 

    61         //init cipher streams

    62         ByteArrayInputStream baInput = new ByteArrayInputStream(plainText);

    63         CipherInputStream ciInput = new CipherInputStream(baInput, encCipher);

    64         ByteArrayOutputStream baOutput = new ByteArrayOutputStream();

    65         CipherOutputStream ciOutput = new CipherOutputStream(baOutput, decCipher);

    66 

    67         //do test

    68         byte[] buffer = new byte[800];

    69         int len = ciInput.read(buffer);

    70         System.out.println("read " + len + " bytes from input buffer");

    71 

    72         while (len != -1) {

    73             ciOutput.write(buffer, 0, len);

    74             System.out.println("wite " + len + " bytes to output buffer");

    75             len = ciInput.read(buffer);

    76             if (len != -1) {

    77                 System.out.println("read " + len + " bytes from input buffer");

    78             } else {

    79                 System.out.println("finished reading");

    80             }

    81         }

    82 

    83         ciOutput.flush();

    84         ciInput.close();

    85         ciOutput.close();

    86         byte[] recovered = baOutput.toByteArray();

    87         System.out.println("recovered " + recovered.length + " bytes");

    88         if (!Arrays.equals(plainText, recovered)) {

    89             throw new RuntimeException("diff check failed!");

    90         } else {

    91             System.out.println("diff check passed");

    92         }

    93     }

    94 }