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 }