1 /*
2  * Copyright (c) 1997, 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 package sun.security.x509;
26 
27 import java.io.IOException;
28 import java.math.BigInteger;
29 
30 import sun.misc.HexDumpEncoder;
31 import sun.security.util.*;
32 
33 /**
34  * This class defines the UniqueIdentity class used by certificates.
35  *
36  * @author Amit Kapoor
37  * @author Hemma Prafullchandra
38  */
39 public class UniqueIdentity {
40     // Private data members
41     private BitArray    id;
42 
43     /**
44      * The default constructor for this class.
45      *
46      * @param id the byte array containing the unique identifier.
47      */
UniqueIdentity(BitArray id)48     public UniqueIdentity(BitArray id) {
49         this.id = id;
50     }
51 
52     /**
53      * The default constructor for this class.
54      *
55      * @param id the byte array containing the unique identifier.
56      */
UniqueIdentity(byte[] id)57     public UniqueIdentity(byte[] id) {
58         this.id = new BitArray(id.length*8, id);
59     }
60 
61     /**
62      * Create the object, decoding the values from the passed DER stream.
63      *
64      * @param in the DerInputStream to read the UniqueIdentity from.
65      * @exception IOException on decoding errors.
66      */
UniqueIdentity(DerInputStream in)67     public UniqueIdentity(DerInputStream in) throws IOException {
68         DerValue derVal = in.getDerValue();
69         id = derVal.getUnalignedBitString(true);
70     }
71 
72     /**
73      * Create the object, decoding the values from the passed DER stream.
74      *
75      * @param derVal the DerValue decoded from the stream.
76      * @param tag the tag the value is encoded under.
77      * @exception IOException on decoding errors.
78      */
UniqueIdentity(DerValue derVal)79     public UniqueIdentity(DerValue derVal) throws IOException {
80         id = derVal.getUnalignedBitString(true);
81     }
82 
83     /**
84      * Return the UniqueIdentity as a printable string.
85      */
toString()86     public String toString() {
87         return ("UniqueIdentity:" + id.toString() + "\n");
88     }
89 
90     /**
91      * Encode the UniqueIdentity in DER form to the stream.
92      *
93      * @param out the DerOutputStream to marshal the contents to.
94      * @param tag enocode it under the following tag.
95      * @exception IOException on errors.
96      */
encode(DerOutputStream out, byte tag)97     public void encode(DerOutputStream out, byte tag) throws IOException {
98         byte[] bytes = id.toByteArray();
99         int excessBits = bytes.length*8 - id.length();
100 
101         out.write(tag);
102         out.putLength(bytes.length + 1);
103 
104         out.write(excessBits);
105         out.write(bytes);
106     }
107 
108     /**
109      * Return the unique id.
110      */
getId()111     public boolean[] getId() {
112         if (id == null) return null;
113 
114         return id.toBooleanArray();
115     }
116 }
117