| /* |
| * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4511556 |
| * @summary Verify BitString value containing padding bits is accepted. |
| * @modules java.base/sun.security.util |
| */ |
| |
| import java.io.*; |
| import java.util.Arrays; |
| import java.math.BigInteger; |
| |
| import sun.security.util.DerInputStream; |
| |
| public class PaddedBitString { |
| |
| // Relaxed the BitString parsing routine to accept bit strings |
| // with padding bits, ex. treat DER_BITSTRING_PAD6 as the same |
| // bit string as DER_BITSTRING_NOPAD. |
| // Note: |
| // 1. the number of padding bits has to be in [0...7] |
| // 2. value of the padding bits is ignored |
| |
| // bit string (01011101 11000000) |
| // With 6 padding bits (01011101 11001011) |
| private final static byte[] DER_BITSTRING_PAD6 = { 3, 3, 6, |
| (byte)0x5d, (byte)0xcb }; |
| |
| // With no padding bits |
| private final static byte[] DER_BITSTRING_NOPAD = { 3, 3, 0, |
| (byte)0x5d, (byte)0xc0 }; |
| |
| public static void main(String args[]) throws Exception { |
| byte[] ba0, ba1; |
| try { |
| DerInputStream derin = new DerInputStream(DER_BITSTRING_PAD6); |
| ba1 = derin.getBitString(); |
| } catch( IOException e ) { |
| e.printStackTrace(); |
| throw new Exception("Unable to parse BitString with 6 padding bits"); |
| } |
| |
| try { |
| DerInputStream derin = new DerInputStream(DER_BITSTRING_NOPAD); |
| ba0 = derin.getBitString(); |
| } catch( IOException e ) { |
| e.printStackTrace(); |
| throw new Exception("Unable to parse BitString with no padding"); |
| } |
| |
| if (Arrays.equals(ba1, ba0) == false ) { |
| throw new Exception("BitString comparison check failed"); |
| } |
| } |
| } |