1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one or more
4 * contributor license agreements. See the NOTICE file distributed with
5 * this work for additional information regarding copyright ownership.
6 * The ASF licenses this file to You under the Apache License, Version 2.0
7 * (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.geronimo.util.asn1;
20
21 import java.io.IOException;
22
23 /**
24 * A NULL object.
25 */
26 public class DERNull
27 extends ASN1Null
28 {
29 byte[] zeroBytes = new byte[0];
30
31 public DERNull()
32 {
33 }
34
35 void encode(
36 DEROutputStream out)
37 throws IOException
38 {
39 out.writeEncoded(NULL, zeroBytes);
40 }
41
42 public boolean equals(
43 Object o)
44 {
45 if ((o == null) || !(o instanceof DERNull))
46 {
47 return false;
48 }
49
50 return true;
51 }
52
53 public int hashCode()
54 {
55 return 0;
56 }
57 }