/**

  *  Licensed to the Apache Software Foundation (ASF) under one or more

  *  contributor license agreements.  See the NOTICE file distributed with

  *  this work for additional information regarding copyright ownership.

  *  The ASF licenses this file to You under the Apache License, Version 2.0

  *  (the "License"); you may not use this file except in compliance with

  *  the License.  You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  *  Unless required by applicable law or agreed to in writing, software

  *  distributed under the License is distributed on an "AS IS" BASIS,

  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  *  See the License for the specific language governing permissions and

  *  limitations under the License.

  */

 package javax.security.auth.message.callback;

 import javax.security.auth.callback.Callback;

 import javax.security.auth.x500.X500Principal;

 import java.math.BigInteger;

 import java.security.PrivateKey;

 import java.security.cert.Certificate;

 /**

  * Callback that enables an authentication module to request a certificate chain and private key from the runtime.

  * The information specifying the chain and key may be an alias, a digest, a subject key, or an issuer ID.

  * Other request types may be supported.

  *

  * @version $Rev: 768352 $ $Date: 2009-04-24 09:26:01 -0700 (Fri, 24 Apr 2009) $

  */

 public class PrivateKeyCallback implements Callback {

     private final Request request;

     private Certificate[] chain;

     private PrivateKey key;

     public PrivateKeyCallback(Request request) {

         this.request = request;

     }

     public Request getRequest() {

         return request;

     }

     public Certificate[] getChain() {

         return chain;

     }

     public PrivateKey getKey() {

         return key;

     }

     public void setKey(PrivateKey key, Certificate[] chain) {

         this.key = key;

         this.chain = chain;

     }

     public static interface Request {

     }

     public static class AliasRequest implements Request {

         private final String alias;

         public AliasRequest(String alias) {

             this.alias = alias;

         }

         public String getAlias() {

             return alias;

         }

     }

     public static class DigestRequest implements Request {

         private final byte[] digest;

         private final String algorithm;

         public DigestRequest(byte[] digest, String algorithm) {

             this.digest = digest;

             this.algorithm = algorithm;

         }

         public byte[] getDigest() {

             return digest;

         }

         public String getAlgorithm() {

             return algorithm;

         }

     }

     public static class SubjectKeyIDRequest implements Request {

         private final byte[] subjectKeyID;

         public SubjectKeyIDRequest(byte[] subjectKeyID) {

             this.subjectKeyID = subjectKeyID;

         }

         public byte[] getSubjectKeyID() {

             return subjectKeyID;

         }

     }

     public static class IssuerSerialNumRequest implements Request {

         private final X500Principal issuer;

         private final BigInteger serialNum;

         public IssuerSerialNumRequest(X500Principal issuer, BigInteger serialNum) {

             this.issuer = issuer;

             this.serialNum = serialNum;

         }

         public X500Principal getIssuer() {

             return issuer;

         }

         public BigInteger getSerialNum() {

             return serialNum;

         }

     }

 }