108 lines
4.0 KiB
Java
108 lines
4.0 KiB
Java
/*
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* Copyright (c) 2002, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4511556
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* @summary Verify BitString value containing padding bits is accepted.
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* @modules java.base/sun.security.util
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* @library /test/lib
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*/
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import java.io.*;
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import java.math.BigInteger;
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import java.util.Arrays;
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import java.util.HexFormat;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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import sun.security.util.BitArray;
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import sun.security.util.DerInputStream;
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public class PaddedBitString {
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// Relaxed the BitString parsing routine to accept bit strings
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// with padding bits, ex. treat DER_BITSTRING_PAD6_b as the same
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// bit string as DER_BITSTRING_PAD6_0/DER_BITSTRING_NOPAD.
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// Note:
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// 1. the number of padding bits has to be in [0...7]
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// 2. value of the padding bits is ignored
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// With no padding bits
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private final static byte[] DER_BITSTRING_NOPAD = { 3, 3, 0,
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(byte)0x5d, (byte)0xc0 };
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// With 6 zero padding bits (01011101 11000000)
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private final static byte[] DER_BITSTRING_PAD6_0 = { 3, 3, 6,
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(byte)0x5d, (byte)0xc0 };
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// With 6 nonzero padding bits (01011101 11001011)
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private final static byte[] DER_BITSTRING_PAD6_b = { 3, 3, 6,
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(byte)0x5d, (byte)0xcb };
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// With 8 padding bits
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private final static byte[] DER_BITSTRING_PAD8_0 = { 3, 3, 8,
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(byte)0x5d, (byte)0xc0 };
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private final static byte[] BITS = { (byte)0x5d, (byte)0xc0 };
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static enum Type {
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BIT_STRING,
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UNALIGNED_BIT_STRING;
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}
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public static void main(String args[]) throws Exception {
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test(DER_BITSTRING_NOPAD, new BitArray(16, BITS));
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test(DER_BITSTRING_PAD6_0, new BitArray(10, BITS));
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test(DER_BITSTRING_PAD6_b, new BitArray(10, BITS));
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test(DER_BITSTRING_PAD8_0, null);
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System.out.println("Tests Passed");
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}
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private static void test(byte[] in, BitArray ans) throws IOException {
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System.out.println("Testing " +
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HexFormat.of().withUpperCase().formatHex(in));
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for (Type t : Type.values()) {
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DerInputStream derin = new DerInputStream(in);
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boolean shouldPass = (ans != null);
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switch (t) {
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case BIT_STRING:
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if (shouldPass) {
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Asserts.assertTrue(Arrays.equals(ans.toByteArray(),
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derin.getBitString()));
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} else {
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Utils.runAndCheckException(() -> derin.getBitString(),
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IOException.class);
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}
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break;
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case UNALIGNED_BIT_STRING:
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if (shouldPass) {
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Asserts.assertEQ(ans, derin.getUnalignedBitString());
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} else {
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Utils.runAndCheckException(() ->
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derin.getUnalignedBitString(), IOException.class);
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}
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break;
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}
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}
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}
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}
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