content: /*
   *  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.
   */
  
  /**
  * @author Alexander Y. Kleymenov
  * @version $Revision$
  */
  
  package android.framework.org.apache.harmony.security_custom.x509;
  
  import java.io.IOException;
  import java.math.BigInteger;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Implicit;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Integer;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1OctetString;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Sequence;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Type;
  import android.framework.org.apache.harmony.security_custom.asn1.BerInputStream;
  import android.framework.org.apache.harmony.security_custom.utils.Array;
  
  /**
   * The class encapsulates the ASN.1 DER encoding/decoding work
   * with Authority Key Identifier Extension (OID = 2.5.29.35).
   * (as specified in RFC 3280 -
   *  Internet X.509 Public Key Infrastructure.
   *  Certificate and Certificate Revocation List (CRL) Profile.
   *  http://www.ietf.org/rfc/rfc3280.txt):
   *
   * <pre>
   *   id-ce-authorityKeyIdentifier OBJECT IDENTIFIER ::=  { id-ce 35 }
   *
   *   AuthorityKeyIdentifier ::= SEQUENCE {
   *      keyIdentifier             [0] KeyIdentifier           OPTIONAL,
   *      authorityCertIssuer       [1] GeneralNames            OPTIONAL,
   *      authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL  }
   *
   *   KeyIdentifier ::= OCTET STRING
   * </pre>
   */
  public final class AuthorityKeyIdentifier extends ExtensionValue {
      private final byte[] keyIdentifier;
      private final GeneralNames authorityCertIssuer;
      private final BigInteger authorityCertSerialNumber;
  
      public AuthorityKeyIdentifier(byte[] keyIdentifier,
              GeneralNames authorityCertIssuer,
              BigInteger authorityCertSerialNumber) {
          this.keyIdentifier = keyIdentifier;
          this.authorityCertIssuer = authorityCertIssuer;
          this.authorityCertSerialNumber = authorityCertSerialNumber;
      }
  
      public static AuthorityKeyIdentifier decode(byte[] encoding) throws IOException {
          AuthorityKeyIdentifier aki = (AuthorityKeyIdentifier) ASN1.decode(encoding);
          aki.encoding = encoding;
          return aki;
      }
  
      @Override public byte[] getEncoded() {
          if (encoding == null) {
              encoding = ASN1.encode(this);
          }
          return encoding;
      }
  
      @Override public void dumpValue(StringBuilder sb, String prefix) {
          sb.append(prefix).append("AuthorityKeyIdentifier [\n");
          if (keyIdentifier != null) {
              sb.append(prefix).append("  keyIdentifier:\n");
              sb.append(Array.toString(keyIdentifier, prefix + "    "));
          }
          if (authorityCertIssuer != null) {
              sb.append(prefix).append("  authorityCertIssuer: [\n");
              authorityCertIssuer.dumpValue(sb, prefix + "    ");
              sb.append(prefix).append("  ]\n");
          }
          if (authorityCertSerialNumber != null) {
              sb.append(prefix).append("  authorityCertSerialNumber: ");
              sb.append(authorityCertSerialNumber).append('\n');
          }
          sb.append(prefix).append("]\n");
      }
  
      public static final ASN1Type ASN1 = new ASN1Sequence(
              new ASN1Type[] {
                  new ASN1Implicit(0, ASN1OctetString.getInstance()),
                  new ASN1Implicit(1, GeneralNames.ASN1),
                  new ASN1Implicit(2, ASN1Integer.getInstance()),
              }) {
          {
              setOptional(0);
              setOptional(1);
              setOptional(2);
          }
  
          @Override protected Object getDecodedObject(BerInputStream in) throws IOException {
              Object[] values = (Object[]) in.content;
  
              byte[] enc = (byte[]) values[2];
              BigInteger authorityCertSerialNumber = null;
              if (enc != null) {
                  authorityCertSerialNumber = new BigInteger(enc);
              }
  
              return new AuthorityKeyIdentifier((byte[]) values[0],
                      (GeneralNames) values[1], authorityCertSerialNumber);
          }
  
          @Override protected void getValues(Object object, Object[] values) {
              AuthorityKeyIdentifier akid = (AuthorityKeyIdentifier) object;
              values[0] = akid.keyIdentifier;
              values[1] = akid.authorityCertIssuer;
              if (akid.authorityCertSerialNumber != null) {
                  values[2] = akid.authorityCertSerialNumber.toByteArray();
              }
          }
      };
  }
  