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

Implements the ASN.1 EncKrbCredPart type.

EncKrbCredPart  ::= [APPLICATION 29] SEQUENCE {
        ticket-info     [0] SEQUENCE OF KrbCredInfo,
        nonce           [1] UInt32 OPTIONAL,
        timestamp       [2] KerberosTime OPTIONAL,
        usec            [3] Microseconds OPTIONAL,
        s-address       [4] HostAddress OPTIONAL,
        r-address       [5] HostAddress OPTIONAL
  }

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

/** * Implements the ASN.1 EncKrbCredPart type. * * <pre>{@code * EncKrbCredPart ::= [APPLICATION 29] SEQUENCE { * ticket-info [0] SEQUENCE OF KrbCredInfo, * nonce [1] UInt32 OPTIONAL, * timestamp [2] KerberosTime OPTIONAL, * usec [3] Microseconds OPTIONAL, * s-address [4] HostAddress OPTIONAL, * r-address [5] HostAddress OPTIONAL * } * }</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 EncKrbCredPart { public KrbCredInfo[] ticketInfo = null; public KerberosTime timeStamp; //optional private Integer nonce; //optional private Integer usec; //optional private HostAddress sAddress; //optional private HostAddresses rAddress; //optional public EncKrbCredPart( KrbCredInfo[] new_ticketInfo, KerberosTime new_timeStamp, Integer new_usec, Integer new_nonce, HostAddress new_sAddress, HostAddresses new_rAddress) throws IOException { if (new_ticketInfo != null) { ticketInfo = new KrbCredInfo[new_ticketInfo.length]; for (int i = 0; i < new_ticketInfo.length; i++) { if (new_ticketInfo[i] == null) { throw new IOException("Cannot create a EncKrbCredPart"); } else { ticketInfo[i] = (KrbCredInfo) new_ticketInfo[i].clone(); } } } timeStamp = new_timeStamp; usec = new_usec; nonce = new_nonce; sAddress = new_sAddress; rAddress = new_rAddress; } public EncKrbCredPart(byte[] data) throws Asn1Exception, IOException, RealmException { init(new DerValue(data)); } public EncKrbCredPart(DerValue encoding) throws Asn1Exception, IOException, RealmException { init(encoding); }
Initializes an EncKrbCredPart 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.
  • RealmException – if an error occurs while parsing a Realm object.
/** * Initializes an EncKrbCredPart 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 RealmException if an error occurs while parsing a Realm object. */
private void init(DerValue encoding) throws Asn1Exception, IOException, RealmException { DerValue der, subDer; //may not be the correct error code for a tag //mismatch on an encrypted structure nonce = null; timeStamp = null; usec = null; sAddress = null; rAddress = null; if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1D) || (encoding.isApplication() != true) || (encoding.isConstructed() != true)) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } der = encoding.getData().getDerValue(); if (der.getTag() != DerValue.tag_Sequence) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } subDer = der.getData().getDerValue(); if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x00) { DerValue[] derValues = subDer.getData().getSequence(1); ticketInfo = new KrbCredInfo[derValues.length]; for (int i = 0; i < derValues.length; i++) { ticketInfo[i] = new KrbCredInfo(derValues[i]); } } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } if (der.getData().available() > 0) { if (((byte) (der.getData().peekByte()) & (byte) 0x1F) == (byte) 0x01) { subDer = der.getData().getDerValue(); nonce = subDer.getData().getBigInteger().intValue(); } } if (der.getData().available() > 0) { timeStamp = KerberosTime.parse(der.getData(), (byte) 0x02, true); } if (der.getData().available() > 0) { if (((byte) (der.getData().peekByte()) & (byte) 0x1F) == (byte) 0x03) { subDer = der.getData().getDerValue(); usec = subDer.getData().getBigInteger().intValue(); } } if (der.getData().available() > 0) { sAddress = HostAddress.parse(der.getData(), (byte) 0x04, true); } if (der.getData().available() > 0) { rAddress = HostAddresses.parse(der.getData(), (byte) 0x05, true); } if (der.getData().available() > 0) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } }
Encodes an EncKrbCredPart 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 EncKrbCredPart object.
/** * Encodes an EncKrbCredPart object. * @return byte array of encoded EncKrbCredPart 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(); DerValue[] tickets = new DerValue[ticketInfo.length]; for (int i = 0; i < ticketInfo.length; i++) { tickets[i] = new DerValue(ticketInfo[i].asn1Encode()); } temp.putSequence(tickets); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp); if (nonce != null) { temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(nonce.intValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), temp); } if (timeStamp != null) { bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), timeStamp.asn1Encode()); } if (usec != null) { temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(usec.intValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x03), temp); } if (sAddress != null) { bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x04), sAddress.asn1Encode()); } if (rAddress != null) { bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x05), rAddress.asn1Encode()); } temp = new DerOutputStream(); temp.write(DerValue.tag_Sequence, bytes); bytes = new DerOutputStream(); bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x1D), temp); return bytes.toByteArray(); } }