1 /*
2 * Copyright 2005 The Apache Software Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17
18 package org.apache.asn1.der;
19
20 import java.io.ByteArrayOutputStream;
21 import java.io.IOException;
22
23 /**
24 * DER UniversalString object.
25 */
26 public class DERUniversalString extends DERString
27 {
28 private static final char[] table = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
29
30 /**
31 * Basic DERObject constructor.
32 */
33 public DERUniversalString( byte[] value )
34 {
35 super( UNIVERSAL_STRING, value );
36 }
37
38 public String getString()
39 {
40 StringBuffer buf = new StringBuffer( "#" );
41
42 ByteArrayOutputStream baos = new ByteArrayOutputStream();
43 ASN1OutputStream aos = new ASN1OutputStream( baos );
44
45 try
46 {
47 aos.writeObject( this );
48 }
49 catch (IOException e)
50 {
51 throw new RuntimeException( "Internal error encoding BitString." );
52 }
53
54 byte[] string = baos.toByteArray();
55
56 for ( int i = 0; i < string.length; i++ )
57 {
58 buf.append( table[ ( string[ i ] >>> 4 ) % 0xf ] );
59 buf.append( table[ string[ i ] & 0xf ] );
60 }
61
62 return buf.toString();
63 }
64 }
65