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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 EncKrbPrivPart type.

EncKrbPrivPart  ::= [APPLICATION 28] SEQUENCE {
        user-data       [0] OCTET STRING,
        timestamp       [1] KerberosTime OPTIONAL,
        usec            [2] Microseconds OPTIONAL,
        seq-number      [3] UInt32 OPTIONAL,
        s-address       [4] HostAddress -- sender's addr --,
        r-address       [5] HostAddress OPTIONAL -- recip's addr
 }

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

/** * Implements the ASN.1 EncKrbPrivPart type. * * <pre>{@code * EncKrbPrivPart ::= [APPLICATION 28] SEQUENCE { * user-data [0] OCTET STRING, * timestamp [1] KerberosTime OPTIONAL, * usec [2] Microseconds OPTIONAL, * seq-number [3] UInt32 OPTIONAL, * s-address [4] HostAddress -- sender's addr --, * r-address [5] HostAddress OPTIONAL -- recip's addr * } * }</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 EncKrbPrivPart { public byte[] userData = null; public KerberosTime timestamp; //optional public Integer usec; //optional public Integer seqNumber; //optional public HostAddress sAddress; //optional public HostAddress rAddress; //optional public EncKrbPrivPart( 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; } public EncKrbPrivPart(byte[] data) throws Asn1Exception, IOException { init(new DerValue(data)); } public EncKrbPrivPart(DerValue encoding) throws Asn1Exception, IOException { init(encoding); }
Initializes an EncKrbPrivPart 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.
/** * Initializes an EncKrbPrivPart 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. */
private void init(DerValue encoding) throws Asn1Exception, IOException { DerValue der, subDer; if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1C) || (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) { userData = subDer.getData().getOctetString(); } else { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } timestamp = KerberosTime.parse(der.getData(), (byte) 0x01, true); if ((der.getData().peekByte() & 0x1F) == 0x02) { subDer = der.getData().getDerValue(); usec = subDer.getData().getBigInteger().intValue(); } else { usec = null; } if ((der.getData().peekByte() & 0x1F) == 0x03) { subDer = der.getData().getDerValue(); seqNumber = subDer.getData().getBigInteger().intValue(); } else { seqNumber = null; } sAddress = HostAddress.parse(der.getData(), (byte) 0x04, false); if (der.getData().available() > 0) { rAddress = HostAddress.parse(der.getData(), (byte) 0x05, true); } if (der.getData().available() > 0) { throw new Asn1Exception(Krb5.ASN1_BAD_ID); } }
Encodes an EncKrbPrivPart 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 EncKrbPrivPart object.
/** * Encodes an EncKrbPrivPart object. * @return byte array of encoded EncKrbPrivPart 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 temp = new DerOutputStream(); DerOutputStream bytes = 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) { 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) 0x1C), temp); return bytes.toByteArray(); } }