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 /**

    26  * @author Tom Deneau

    27  */

    28 

    29 import javax.crypto.Cipher;

    30 import javax.crypto.KeyGenerator;

    31 import javax.crypto.SecretKey;

    32 import javax.crypto.spec.IvParameterSpec;

    33 import javax.crypto.spec.SecretKeySpec;

    34 import java.security.AlgorithmParameters;

    35 

    36 import java.util.Random;

    37 import java.util.Arrays;

    38 

    39 abstract public class TestAESBase {

    40   int msgSize = Integer.getInteger("msgSize", 646);

    41   boolean checkOutput = Boolean.getBoolean("checkOutput");

    42   boolean noReinit = Boolean.getBoolean("noReinit");

    43   int keySize = Integer.getInteger("keySize", 128);

    44   String algorithm = System.getProperty("algorithm", "AES");

    45   String mode = System.getProperty("mode", "CBC");

    46   byte[] input;

    47   byte[] encode;

    48   byte[] expectedEncode;

    49   byte[] decode;

    50   byte[] expectedDecode;

    51   Random random = new Random(0);

    52   Cipher cipher;

    53   Cipher dCipher;

    54   String paddingStr = "PKCS5Padding";

    55   AlgorithmParameters algParams;

    56   SecretKey key;

    57   int ivLen;

    58 

    59   static int numThreads = 0;

    60   int  threadId;

    61   static synchronized int getThreadId() {

    62     int id = numThreads;

    63     numThreads++;

    64     return id;

    65   }

    66 

    67   abstract public void run();

    68 

    69   public void prepare() {

    70     try {

    71     System.out.println("\nmsgSize=" + msgSize + ", key size=" + keySize + ", reInit=" + !noReinit + ", checkOutput=" + checkOutput);

    72 

    73       int keyLenBytes = (keySize == 0 ? 16 : keySize/8);

    74       byte keyBytes[] = new byte[keyLenBytes];

    75       if (keySize == 128)

    76         keyBytes = new byte[] {-8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7};

    77       else

    78         random.nextBytes(keyBytes);

    79 

    80       key = new SecretKeySpec(keyBytes, algorithm);

    81       if (threadId == 0) {

    82         System.out.println("Algorithm: " + key.getAlgorithm() + "("

    83                            + key.getEncoded().length * 8 + "bit)");

    84       }

    85       input = new byte[msgSize];

    86       for (int i=0; i<input.length; i++) {

    87         input[i] = (byte) (i & 0xff);

    88       }

    89 

    90       cipher = Cipher.getInstance(algorithm + "/" + mode + "/" + paddingStr, "SunJCE");

    91       dCipher = Cipher.getInstance(algorithm + "/" + mode + "/" + paddingStr, "SunJCE");

    92 

    93       ivLen = (algorithm.equals("AES") ? 16 : algorithm.equals("DES") ? 8 : 0);

    94       IvParameterSpec initVector = new IvParameterSpec(new byte[ivLen]);

    95 

    96       cipher.init(Cipher.ENCRYPT_MODE, key, initVector);

    97       algParams = cipher.getParameters();

    98       dCipher.init(Cipher.DECRYPT_MODE, key, algParams);

    99       if (threadId == 0) {

   100         childShowCipher();

   101       }

   102 

   103       // do one encode and decode in preparation

   104       // this will also create the encode buffer and decode buffer

   105       encode = cipher.doFinal(input);

   106       decode = dCipher.doFinal(encode);

   107       if (checkOutput) {

   108         expectedEncode = (byte[]) encode.clone();

   109         expectedDecode = (byte[]) decode.clone();

   110         showArray(key.getEncoded()  ,  "key:    ");

   111         showArray(input,  "input:  ");

   112         showArray(encode, "encode: ");

   113         showArray(decode, "decode: ");

   114       }

   115     }

   116     catch (Exception e) {

   117       e.printStackTrace();

   118       System.exit(1);

   119     }

   120   }

   121 

   122   void showArray(byte b[], String name) {

   123     System.out.format("%s [%d]: ", name, b.length);

   124     for (int i=0; i<Math.min(b.length, 32); i++) {

   125       System.out.format("%02x ", b[i] & 0xff);

   126     }

   127     System.out.println();

   128   }

   129 

   130   void compareArrays(byte b[], byte exp[]) {

   131     if (b.length != exp.length) {

   132       System.out.format("different lengths for actual and expected output arrays\n");

   133       showArray(b, "test: ");

   134       showArray(exp, "exp : ");

   135       System.exit(1);

   136     }

   137     for (int i=0; i< exp.length; i++) {

   138       if (b[i] != exp[i]) {

   139         System.out.format("output error at index %d: got %02x, expected %02x\n", i, b[i] & 0xff, exp[i] & 0xff);

   140         showArray(b, "test: ");

   141         showArray(exp, "exp : ");

   142         System.exit(1);

   143       }

   144     }

   145   }

   146 

   147 

   148   void showCipher(Cipher c, String kind) {

   149     System.out.println(kind + " cipher provider: " + cipher.getProvider());

   150     System.out.println(kind + " cipher algorithm: " + cipher.getAlgorithm());

   151   }

   152 

   153   abstract void childShowCipher();

   154 }