001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.geronimo.crypto.jce.provider;
019
020 import java.io.ByteArrayOutputStream;
021 import java.io.IOException;
022 import java.math.BigInteger;
023 import java.security.interfaces.DSAParams;
024 import java.security.interfaces.DSAPrivateKey;
025 import java.security.spec.DSAParameterSpec;
026 import java.security.spec.DSAPrivateKeySpec;
027 import java.util.Enumeration;
028 import java.util.Hashtable;
029 import java.util.Vector;
030
031 import org.apache.geronimo.crypto.asn1.ASN1Sequence;
032 import org.apache.geronimo.crypto.asn1.DEREncodable;
033 import org.apache.geronimo.crypto.asn1.DERInteger;
034 import org.apache.geronimo.crypto.asn1.DERObjectIdentifier;
035 import org.apache.geronimo.crypto.asn1.DEROutputStream;
036 import org.apache.geronimo.crypto.asn1.pkcs.PrivateKeyInfo;
037 import org.apache.geronimo.crypto.asn1.x509.AlgorithmIdentifier;
038 import org.apache.geronimo.crypto.asn1.x509.DSAParameter;
039 import org.apache.geronimo.crypto.asn1.x9.X9ObjectIdentifiers;
040 import org.apache.geronimo.crypto.crypto.params.DSAPrivateKeyParameters;
041 import org.apache.geronimo.crypto.jce.interfaces.PKCS12BagAttributeCarrier;
042
043 public class JDKDSAPrivateKey
044 implements DSAPrivateKey, PKCS12BagAttributeCarrier
045 {
046 BigInteger x;
047 DSAParams dsaSpec;
048
049 private Hashtable pkcs12Attributes = new Hashtable();
050 private Vector pkcs12Ordering = new Vector();
051
052 protected JDKDSAPrivateKey()
053 {
054 }
055
056 JDKDSAPrivateKey(
057 DSAPrivateKey key)
058 {
059 this.x = key.getX();
060 this.dsaSpec = key.getParams();
061 }
062
063 JDKDSAPrivateKey(
064 DSAPrivateKeySpec spec)
065 {
066 this.x = spec.getX();
067 this.dsaSpec = new DSAParameterSpec(spec.getP(), spec.getQ(), spec.getG());
068 }
069
070 JDKDSAPrivateKey(
071 PrivateKeyInfo info)
072 {
073 DSAParameter params = new DSAParameter((ASN1Sequence)info.getAlgorithmId().getParameters());
074 DERInteger derX = (DERInteger)info.getPrivateKey();
075
076 this.x = derX.getValue();
077 this.dsaSpec = new DSAParameterSpec(params.getP(), params.getQ(), params.getG());
078 }
079
080 JDKDSAPrivateKey(
081 DSAPrivateKeyParameters params)
082 {
083 this.x = params.getX();
084 this.dsaSpec = new DSAParameterSpec(params.getParameters().getP(), params.getParameters().getQ(), params.getParameters().getG());
085 }
086
087 public String getAlgorithm()
088 {
089 return "DSA";
090 }
091
092 /**
093 * return the encoding format we produce in getEncoded().
094 *
095 * @return the string "PKCS#8"
096 */
097 public String getFormat()
098 {
099 return "PKCS#8";
100 }
101
102 /**
103 * Return a PKCS8 representation of the key. The sequence returned
104 * represents a full PrivateKeyInfo object.
105 *
106 * @return a PKCS8 representation of the key.
107 */
108 public byte[] getEncoded()
109 {
110 ByteArrayOutputStream bOut = new ByteArrayOutputStream();
111 DEROutputStream dOut = new DEROutputStream(bOut);
112 PrivateKeyInfo info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, new DSAParameter(dsaSpec.getP(), dsaSpec.getQ(), dsaSpec.getG()).getDERObject()), new DERInteger(getX()));
113
114 try
115 {
116 dOut.writeObject(info);
117 dOut.close();
118 }
119 catch (IOException e)
120 {
121 throw new RuntimeException("Error encoding DSA private key", e);
122 }
123
124 return bOut.toByteArray();
125 }
126
127 public DSAParams getParams()
128 {
129 return dsaSpec;
130 }
131
132 public BigInteger getX()
133 {
134 return x;
135 }
136
137 public void setBagAttribute(
138 DERObjectIdentifier oid,
139 DEREncodable attribute)
140 {
141 pkcs12Attributes.put(oid, attribute);
142 pkcs12Ordering.addElement(oid);
143 }
144
145 public DEREncodable getBagAttribute(
146 DERObjectIdentifier oid)
147 {
148 return (DEREncodable)pkcs12Attributes.get(oid);
149 }
150
151 public Enumeration getBagAttributeKeys()
152 {
153 return pkcs12Ordering.elements();
154 }
155 }