1 /*
   2  * Copyright (c) 2014, 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 8014374
  27  * @summary Test basic CipherInputStream/OutputStream func w/ GCM mode.
  28  * @author Valerie Peng
  29  */
  30 
  31 import java.security.*;
  32 import javax.crypto.*;
  33 import javax.crypto.spec.*;
  34 import java.math.*;
  35 import java.io.*;
  36 import com.sun.crypto.provider.*;
  37 
  38 import java.util.*;
  39 
  40 public class TestCICOWithGCM extends UcryptoTest {
  41     public static void main(String[] args) throws Exception {
  42         main(new TestCICOWithGCM(), null);
  43     }
  44 
  45     public void doTest(Provider p) throws Exception {
  46         // check if GCM support exists
  47         try {
  48             Cipher.getInstance("AES/GCM/NoPadding", p);
  49         } catch (NoSuchAlgorithmException nsae) {
  50             System.out.println("Skipping Test due to no GCM support");
  51             return;
  52         }
  53 
  54         Random rdm = new Random();
  55 
  56         //init Secret Key
  57         byte[] keyValue = new byte[16];
  58         rdm.nextBytes(keyValue);
  59         SecretKey key = new SecretKeySpec(keyValue, "AES");
  60 
  61         //do initialization of the plainText
  62         byte[] plainText = new byte[800];
  63         rdm.nextBytes(plainText);
  64 
  65         //init ciphers
  66         Cipher encCipher = Cipher.getInstance("AES/GCM/NoPadding", p);
  67         encCipher.init(Cipher.ENCRYPT_MODE, key);
  68         Cipher decCipher = Cipher.getInstance("AES/GCM/NoPadding", p);
  69         decCipher.init(Cipher.DECRYPT_MODE, key, encCipher.getParameters());
  70 
  71         //init cipher streams
  72         ByteArrayInputStream baInput = new ByteArrayInputStream(plainText);
  73         CipherInputStream ciInput = new CipherInputStream(baInput, encCipher);
  74         ByteArrayOutputStream baOutput = new ByteArrayOutputStream();
  75         CipherOutputStream ciOutput = new CipherOutputStream(baOutput, decCipher);
  76 
  77         //do test
  78         byte[] buffer = new byte[800];
  79         int len = ciInput.read(buffer);
  80         System.out.println("read " + len + " bytes from input buffer");
  81 
  82         while (len != -1) {
  83             ciOutput.write(buffer, 0, len);
  84             System.out.println("wite " + len + " bytes to output buffer");
  85             len = ciInput.read(buffer);
  86             if (len != -1) {
  87                 System.out.println("read " + len + " bytes from input buffer");
  88             } else {
  89                 System.out.println("finished reading");
  90             }
  91         }
  92 
  93         ciOutput.flush();
  94         ciInput.close();
  95         ciOutput.close();
  96         byte[] recovered = baOutput.toByteArray();
  97         System.out.println("recovered " + recovered.length + " bytes");
  98         if (!Arrays.equals(plainText, recovered)) {
  99             throw new RuntimeException("diff check failed!");
 100         } else {
 101             System.out.println("diff check passed");
 102         }
 103     }
 104 }