1/*
2 * Copyright (c) 2016, 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 8072452
27 * @summary Support DHE sizes up to 8192-bits and DSA sizes up to 3072-bits
28 */
29
30import java.math.BigInteger;
31
32import java.security.*;
33import javax.crypto.*;
34import javax.crypto.interfaces.*;
35import javax.crypto.spec.*;
36
37public class UnsupportedDHKeys {
38
39    /*
40     * Sizes and values for various lengths.
41     */
42    private enum UnsupportedKeySize {
43        // not multiple of 64
44        dhp513(513),    dhp769(769),    dhp895(895),
45        dhp1023(1023),  dhp1535(1535),  dhp2047(2047),
46
47        // unsupported
48        dhp2176(2176),  dhp3008(3008),  dhp4032(4032),
49        dhp5120(5120),  dhp6400(6400),  dhp7680(7680),
50        dhp8191(8191),  dhp8128(8128),  dhp8260(8260);
51
52        final int primeSize;
53
54        UnsupportedKeySize(int primeSize) {
55            this.primeSize = primeSize;
56        }
57    }
58
59    public static void main(String[] args) throws Exception {
60        for (UnsupportedKeySize keySize : UnsupportedKeySize.values()) {
61            try {
62                System.out.println("Checking " + keySize.primeSize + " ...");
63                KeyPairGenerator kpg =
64                        KeyPairGenerator.getInstance("DH", "SunJCE");
65                kpg.initialize(keySize.primeSize);
66
67                throw new Exception("Should not support " + keySize.primeSize);
68            } catch (InvalidParameterException ipe) {
69                System.out.println("\tOk, unsupported");
70            }
71        }
72    }
73}
74