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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 java.util.Vector;
import java.io.IOException;
import java.math.BigInteger;

Implements the ASN.1 KRBSafeBody type. KRB-SAFE-BODY ::= SEQUENCE { user-data [0] OCTET STRING, timestamp [1] KerberosTime OPTIONAL, usec [2] Microseconds OPTIONAL, seq-number [3] UInt32 OPTIONAL, s-address [4] HostAddress, 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 KRBSafeBody type. * * <xmp> * KRB-SAFE-BODY ::= SEQUENCE { * user-data [0] OCTET STRING, * timestamp [1] KerberosTime OPTIONAL, * usec [2] Microseconds OPTIONAL, * seq-number [3] UInt32 OPTIONAL, * s-address [4] HostAddress, * r-address [5] HostAddress OPTIONAL * } * </xmp> * * <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 KRBSafeBody { public byte[] userData = null; public KerberosTime timestamp; //optional public Integer usec; //optional public Integer seqNumber; //optional public HostAddress sAddress; public HostAddress rAddress; //optional public KRBSafeBody( byte[] new_userData, KerberosTime new_timestamp, Integer new_usec, Integer new_seqNumber, HostAddress new_sAddress, HostAddress new_rAddress ) { if (new_userData != null) { userData = new_userData.clone(); } timestamp = new_timestamp; usec = new_usec; seqNumber = new_seqNumber; sAddress = new_sAddress; rAddress = new_rAddress; }
Constructs a KRBSafeBody object.
Params:
  • encoding – a Der-encoded data.
Throws:
  • Asn1Exception – if an error occurs while decoding an ASN1 encoded data.
  • IOException – if an I/O error occurs while reading encoded data.
/** * Constructs a KRBSafeBody object. * @param encoding a Der-encoded data. * @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 KRBSafeBody(DerValue encoding) throws Asn1Exception, IOException { DerValue der; if (encoding.getTag() != DerValue.tag_Sequence) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } der = encoding.getData().getDerValue(); if ((der.getTag() & 0x1F) == 0x00) { userData = der.getData().getOctetString(); } else throw new Asn1Exception(Krb5.ASN1_BAD_ID); timestamp = KerberosTime.parse(encoding.getData(), (byte)0x01, true); if ((encoding.getData().peekByte() & 0x1F) == 0x02) { der = encoding.getData().getDerValue(); usec = new Integer(der.getData().getBigInteger().intValue()); } if ((encoding.getData().peekByte() & 0x1F) == 0x03) { der = encoding.getData().getDerValue(); seqNumber = new Integer(der.getData().getBigInteger().intValue()); } sAddress = HostAddress.parse(encoding.getData(), (byte)0x04, false); if (encoding.getData().available() > 0) rAddress = HostAddress.parse(encoding.getData(), (byte)0x05, true); if (encoding.getData().available() > 0) throw new Asn1Exception(Krb5.ASN1_BAD_ID); }
Encodes an KRBSafeBody 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:the byte array of encoded KRBSafeBody object.
/** * Encodes an KRBSafeBody object. * @return the byte array of encoded KRBSafeBody 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.putOctetString(userData); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); if (timestamp != null) bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), timestamp.asn1Encode()); if (usec != null) { temp = new DerOutputStream(); temp.putInteger(BigInteger.valueOf(usec.intValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), temp); } if (seqNumber != null) { temp = new DerOutputStream(); // encode as an unsigned integer (UInt32) temp.putInteger(BigInteger.valueOf(seqNumber.longValue())); bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), temp); } bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x04), sAddress.asn1Encode()); if (rAddress != null) temp = new DerOutputStream(); temp.write(DerValue.tag_Sequence, bytes); return temp.toByteArray(); }
Parse (unmarshal) a KRBSafeBody 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 – indicates if this data field is optional
Throws:
  • Asn1Exception – on error.
Returns:an instance of KRBSafeBody.
/** * Parse (unmarshal) a KRBSafeBody 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 indicates if this data field is optional * @return an instance of KRBSafeBody. * */
public static KRBSafeBody parse(DerInputStream data, byte explicitTag, boolean optional) throws Asn1Exception, IOException { 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 KRBSafeBody(subDer); } } }