1 /* 2 * Copyright (c) 2003, 2007, 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 4844847 27 * @summary Test the Cipher.update/doFinal(ByteBuffer, ByteBuffer) methods 28 * @author Andreas Sterbenz 29 * @key randomness 30 */ 31 32 import java.util.*; 33 import java.nio.*; 34 35 import java.security.*; 36 37 import javax.crypto.*; 38 import javax.crypto.spec.*; 39 40 public class ByteBuffers { 41 42 public static void main(String[] args) throws Exception { 43 Provider p = Security.getProvider("SunJCE"); 44 Random random = new Random(); 45 int n = 10 * 1024; 46 byte[] t = new byte[n]; 47 random.nextBytes(t); 48 49 byte[] keyBytes = new byte[8]; 50 random.nextBytes(keyBytes); 51 SecretKey key = new SecretKeySpec(keyBytes, "DES"); 52 53 Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding"); 54 cipher.init(Cipher.ENCRYPT_MODE, key); 55 56 byte[] outBytes = cipher.doFinal(t); 57 58 // create ByteBuffers for input (i1, i2, i3) and fill them 59 ByteBuffer i0 = ByteBuffer.allocate(n + 256); 60 i0.position(random.nextInt(256)); 61 i0.limit(i0.position() + n); 62 ByteBuffer i1 = i0.slice(); 63 i1.put(t); 64 65 ByteBuffer i2 = ByteBuffer.allocateDirect(t.length); 66 i2.put(t); 67 68 i1.clear(); 69 ByteBuffer i3 = i1.asReadOnlyBuffer(); 70 71 ByteBuffer o0 = ByteBuffer.allocate(n + 512); 72 o0.position(random.nextInt(256)); 73 o0.limit(o0.position() + n + 256); 74 ByteBuffer o1 = o0.slice(); 75 76 ByteBuffer o2 = ByteBuffer.allocateDirect(t.length + 256); 77 78 crypt(cipher, i1, o1, outBytes, random); 79 crypt(cipher, i2, o1, outBytes, random); 80 crypt(cipher, i3, o1, outBytes, random); 81 crypt(cipher, i1, o2, outBytes, random); 82 crypt(cipher, i2, o2, outBytes, random); 83 crypt(cipher, i3, o2, outBytes, random); 84 85 System.out.println("All tests passed"); 86 } 87 88 private static void crypt(Cipher cipher, ByteBuffer in, ByteBuffer out, byte[] outBytes, Random random) throws Exception { 89 in.clear(); 90 out.clear(); 91 out.put(new byte[out.remaining()]); 92 out.clear(); 93 int lim = in.limit(); 94 in.limit(random.nextInt(lim)); 95 cipher.update(in, out); 96 if (in.hasRemaining()) { 97 throw new Exception("Buffer not consumed"); 98 } 99 in.limit(lim); 100 cipher.doFinal(in, out); 101 if (in.hasRemaining()) { 102 throw new Exception("Buffer not consumed"); 103 } 104 out.flip(); 105 byte[] b = new byte[out.remaining()]; 106 out.get(b); 107 if (Arrays.equals(outBytes, b) == false) { 108 throw new Exception("Encryption output mismatch"); 109 } 110 } 111 }