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/*
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 *  (C) Copyright IBM Corp. 1999 All Rights Reserved.
 *  Copyright 1997 The Open Group Research Institute.  All rights reserved.
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package sun.security.krb5.internal;

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

Implements the ASN.1 Ticket type.

Ticket               ::= [APPLICATION 1] SEQUENCE {
     tkt-vno         [0] INTEGER (5),
     realm           [1] Realm,
     sname           [2] PrincipalName,
     enc-part        [3] EncryptedData -- EncTicketPart
 }

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

/** * Implements the ASN.1 Ticket type. * * <pre>{@code * Ticket ::= [APPLICATION 1] SEQUENCE { * tkt-vno [0] INTEGER (5), * realm [1] Realm, * sname [2] PrincipalName, * enc-part [3] EncryptedData -- EncTicketPart * } * }</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 Ticket implements Cloneable { public int tkt_vno; public PrincipalName sname; public EncryptedData encPart; private Ticket() { } public Object clone() { Ticket new_ticket = new Ticket(); new_ticket.sname = (PrincipalName)sname.clone(); new_ticket.encPart = (EncryptedData)encPart.clone(); new_ticket.tkt_vno = tkt_vno; return new_ticket; } public Ticket( PrincipalName new_sname, EncryptedData new_encPart ) { tkt_vno = Krb5.TICKET_VNO; sname = new_sname; encPart = new_encPart; } // Warning: called by NativeCreds.c and nativeccache.c public Ticket(byte[] data) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(new DerValue(data)); } public Ticket(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { init(encoding); }
Initializes a Ticket 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.
  • RealmException – if an error occurs while parsing a Realm object.
/** * Initializes a Ticket 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. * @exception RealmException if an error occurs while parsing a Realm object. */
private void init(DerValue encoding) throws Asn1Exception, RealmException, KrbApErrException, IOException { DerValue der; DerValue subDer; if (((encoding.getTag() & (byte)0x1F) != Krb5.KRB_TKT) || (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) throw new Asn1Exception(Krb5.ASN1_BAD_ID); tkt_vno = subDer.getData().getBigInteger().intValue(); if (tkt_vno != Krb5.TICKET_VNO) throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); Realm srealm = Realm.parse(der.getData(), (byte)0x01, false); sname = PrincipalName.parse(der.getData(), (byte)0x02, false, srealm); encPart = EncryptedData.parse(der.getData(), (byte)0x03, false); if (der.getData().available() > 0) throw new Asn1Exception(Krb5.ASN1_BAD_ID); }
Encodes a Ticket 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 ticket object.
/** * Encodes a Ticket object. * @return byte array of encoded ticket 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[] der = new DerValue[4]; temp.putInteger(BigInteger.valueOf(tkt_vno)); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), sname.getRealm().asn1Encode()); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), sname.asn1Encode()); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), encPart.asn1Encode()); temp = new DerOutputStream(); temp.write(DerValue.tag_Sequence, bytes); DerOutputStream ticket = new DerOutputStream(); ticket.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x01), temp); return ticket.toByteArray(); }
Parse (unmarshal) a Ticket from a DER input stream. This form parsing might be used when expanding a value which is part of a constructed sequence and uses explicitly tagged type.
Params:
  • data – the Der input stream value, which contains one or more marshaled value.
  • explicitTag – tag number.
  • optional – indicate if this data field is optional
Throws:
  • Asn1Exception – on error.
Returns:an instance of Ticket.
/** * Parse (unmarshal) a Ticket from a DER input stream. This form * parsing might be used when expanding a value which is part of * a constructed sequence and uses explicitly tagged type. * * @exception Asn1Exception on error. * @param data the Der input stream value, which contains one or more marshaled value. * @param explicitTag tag number. * @param optional indicate if this data field is optional * @return an instance of Ticket. */
public static Ticket parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException, RealmException, KrbApErrException { if ((optional) && (((byte)data.peekByte() & (byte)0x1F)!= explicitTag)) return null; DerValue der = data.getDerValue(); if (explicitTag != (der.getTag() & (byte)0x1F)) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } else { DerValue subDer = der.getData().getDerValue(); return new Ticket(subDer); } } }