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