001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019 package org.apache.geronimo.util.asn1.x509;
020
021 import org.apache.geronimo.util.asn1.ASN1Encodable;
022 import org.apache.geronimo.util.asn1.ASN1EncodableVector;
023 import org.apache.geronimo.util.asn1.ASN1Sequence;
024 import org.apache.geronimo.util.asn1.ASN1TaggedObject;
025 import org.apache.geronimo.util.asn1.DERBitString;
026 import org.apache.geronimo.util.asn1.DEREnumerated;
027 import org.apache.geronimo.util.asn1.DERObject;
028 import org.apache.geronimo.util.asn1.DERObjectIdentifier;
029 import org.apache.geronimo.util.asn1.DERSequence;
030 import org.apache.geronimo.util.asn1.x509.AlgorithmIdentifier;
031
032
033 public class ObjectDigestInfo
034 extends ASN1Encodable
035 {
036 DEREnumerated digestedObjectType;
037
038 DERObjectIdentifier otherObjectTypeID;
039
040 AlgorithmIdentifier digestAlgorithm;
041
042 DERBitString objectDigest;
043
044 public static ObjectDigestInfo getInstance(
045 Object obj)
046 {
047 if (obj == null || obj instanceof ObjectDigestInfo)
048 {
049 return (ObjectDigestInfo)obj;
050 }
051
052 if (obj instanceof ASN1Sequence)
053 {
054 return new ObjectDigestInfo((ASN1Sequence)obj);
055 }
056
057 throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
058 }
059
060 public static ObjectDigestInfo getInstance(
061 ASN1TaggedObject obj,
062 boolean explicit)
063 {
064 return getInstance(ASN1Sequence.getInstance(obj, explicit));
065 }
066
067 public ObjectDigestInfo(ASN1Sequence seq)
068 {
069 digestedObjectType = DEREnumerated.getInstance(seq.getObjectAt(0));
070
071 int offset = 0;
072
073 if (seq.size() == 4)
074 {
075 otherObjectTypeID = DERObjectIdentifier.getInstance(seq.getObjectAt(1));
076 offset++;
077 }
078
079 digestAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(1 + offset));
080
081 objectDigest = new DERBitString(seq.getObjectAt(2 + offset));
082 }
083
084 public DEREnumerated getDigestedObjectType()
085 {
086 return digestedObjectType;
087 }
088
089 public DERObjectIdentifier getOtherObjectTypeID()
090 {
091 return otherObjectTypeID;
092 }
093
094 public AlgorithmIdentifier getDigestAlgorithm()
095 {
096 return digestAlgorithm;
097 }
098
099 public DERBitString getObjectDigest()
100 {
101 return objectDigest;
102 }
103
104 /**
105 * Produce an object suitable for an ASN1OutputStream.
106 *
107 * <pre>
108 *
109 * ObjectDigestInfo ::= SEQUENCE {
110 * digestedObjectType ENUMERATED {
111 * publicKey (0),
112 * publicKeyCert (1),
113 * otherObjectTypes (2) },
114 * -- otherObjectTypes MUST NOT
115 * -- be used in this profile
116 * otherObjectTypeID OBJECT IDENTIFIER OPTIONAL,
117 * digestAlgorithm AlgorithmIdentifier,
118 * objectDigest BIT STRING
119 * }
120 *
121 * </pre>
122 */
123 public DERObject toASN1Object()
124 {
125 ASN1EncodableVector v = new ASN1EncodableVector();
126
127 v.add(digestedObjectType);
128
129 if (otherObjectTypeID != null)
130 {
131 v.add(otherObjectTypeID);
132 }
133
134 v.add(digestAlgorithm);
135 v.add(objectDigest);
136
137 return new DERSequence(v);
138 }
139 }