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20 package org.apache.directory.server.kerberos.shared.io.encoder;
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23 import java.io.ByteArrayOutputStream;
24 import java.io.IOException;
25
26 import org.apache.directory.server.kerberos.shared.messages.Encodable;
27 import org.apache.directory.server.kerberos.shared.messages.components.EncApRepPart;
28 import org.apache.directory.shared.asn1.der.ASN1OutputStream;
29 import org.apache.directory.shared.asn1.der.DERApplicationSpecific;
30 import org.apache.directory.shared.asn1.der.DERInteger;
31 import org.apache.directory.shared.asn1.der.DERSequence;
32 import org.apache.directory.shared.asn1.der.DERTaggedObject;
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39 public class EncApRepPartEncoder implements Encoder, EncoderFactory
40 {
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44 public static final int APPLICATION_CODE = 27;
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46
47 public Encoder getEncoder()
48 {
49 return new EncApRepPartEncoder();
50 }
51
52
53 public byte[] encode( Encodable apRepPart ) throws IOException
54 {
55 ByteArrayOutputStream baos = new ByteArrayOutputStream();
56 ASN1OutputStream aos = new ASN1OutputStream( baos );
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58 DERSequence privPartSequence = encodeApRepPartSequence( ( EncApRepPart ) apRepPart );
59 aos.writeObject( DERApplicationSpecific.valueOf( APPLICATION_CODE, privPartSequence ) );
60 aos.close();
61
62 return baos.toByteArray();
63 }
64
65
66 private DERSequence encodeApRepPartSequence( EncApRepPart message )
67 {
68 DERSequence sequence = new DERSequence();
69
70 sequence.add( new DERTaggedObject( 0, KerberosTimeEncoder.encode( message.getClientTime() ) ) );
71 sequence.add( new DERTaggedObject( 1, DERInteger.valueOf( message.getClientMicroSecond() ) ) );
72
73 if ( message.getSubSessionKey() != null )
74 {
75 sequence.add( new DERTaggedObject( 2, EncryptionKeyEncoder.encodeSequence( message.getSubSessionKey() ) ) );
76 }
77
78 if ( message.getSequenceNumber() != null )
79 {
80 sequence.add( new DERTaggedObject( 3, DERInteger.valueOf( message.getSequenceNumber().intValue() ) ) );
81 }
82
83 return sequence;
84 }
85 }