/*
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/*
 *
 *  (C) Copyright IBM Corp. 1999 All Rights Reserved.
 *  Copyright 1997 The Open Group Research Institute.  All rights reserved.
 */

package sun.security.krb5.internal;

import sun.security.krb5.EncryptedData;
import sun.security.krb5.Asn1Exception;
import sun.security.util.*;
import java.io.IOException;
import java.math.BigInteger;

Implements the ASN.1 AP-REP type.

AP-REP          ::= [APPLICATION 15] SEQUENCE {
        pvno            [0] INTEGER (5),
        msg-type        [1] INTEGER (15),
        enc-part        [2] EncryptedData -- EncAPRepPart
 }

This definition reflects the Network Working Group RFC 4120 specification available at http://www.ietf.org/rfc/rfc4120.txt.

/** * Implements the ASN.1 AP-REP type. * * <pre>{@code * AP-REP ::= [APPLICATION 15] SEQUENCE { * pvno [0] INTEGER (5), * msg-type [1] INTEGER (15), * enc-part [2] EncryptedData -- EncAPRepPart * } * }</pre> * * <p> * This definition reflects the Network Working Group RFC 4120 * specification available at * <a href="http://www.ietf.org/rfc/rfc4120.txt"> * http://www.ietf.org/rfc/rfc4120.txt</a>. */
public class APRep { public int pvno; public int msgType; public EncryptedData encPart; public APRep(EncryptedData new_encPart) { pvno = Krb5.PVNO; msgType = Krb5.KRB_AP_REP; encPart = new_encPart; } public APRep(byte[] data) throws Asn1Exception, KrbApErrException, IOException { init(new DerValue(data)); } public APRep(DerValue encoding) throws Asn1Exception, KrbApErrException, IOException { init(encoding); }
Initializes an APRep object.
Params:
  • encoding – a single DER-encoded value.
Throws:
  • Asn1Exception – if an error occurs while decoding an ASN1 encoded data.
  • IOException – if an I/O error occurs while reading encoded data.
  • KrbApErrException – if the value read from the DER-encoded data stream does not match the pre-defined value.
/** * Initializes an APRep object. * @param encoding a single DER-encoded value. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. * @exception KrbApErrException if the value read from the DER-encoded data * stream does not match the pre-defined value. */
private void init(DerValue encoding) throws Asn1Exception, KrbApErrException, IOException { if (((encoding.getTag() & (byte) (0x1F)) != Krb5.KRB_AP_REP) || (encoding.isApplication() != true) || (encoding.isConstructed() != true)) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } DerValue der = encoding.getData().getDerValue(); if (der.getTag() != DerValue.tag_Sequence) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } DerValue subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x00) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } pvno = subDer.getData().getBigInteger().intValue(); if (pvno != Krb5.PVNO) { throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x01) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } msgType = subDer.getData().getBigInteger().intValue(); if (msgType != Krb5.KRB_AP_REP) { throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); } encPart = EncryptedData.parse(der.getData(), (byte) 0x02, false); if (der.getData().available() > 0) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } }
Encodes an APRep object.
Throws:
  • Asn1Exception – if an error occurs while decoding an ASN1 encoded data.
  • IOException – if an I/O error occurs while reading encoded data.
Returns:byte array of encoded APRep object.
/** * Encodes an APRep object. * @return byte array of encoded APRep object. * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. * @exception IOException if an I/O error occurs while reading encoded data. */
public byte[] asn1Encode() throws Asn1Exception, IOException { DerOutputStream bytes = new DerOutputStream(); DerOutputStream temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(pvno)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp); temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(msgType)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), temp); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), encPart.asn1Encode()); temp = new DerOutputStream(); temp.write(DerValue.tag_Sequence, bytes); DerOutputStream aprep = new DerOutputStream(); aprep.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x0F), temp); return aprep.toByteArray(); } }