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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;
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26 import org.apache.directory.server.kerberos.shared.messages.value.PaData;
27 import org.apache.directory.shared.asn1.der.ASN1OutputStream;
28 import org.apache.directory.shared.asn1.der.DERInteger;
29 import org.apache.directory.shared.asn1.der.DEROctetString;
30 import org.apache.directory.shared.asn1.der.DERSequence;
31 import org.apache.directory.shared.asn1.der.DERTaggedObject;
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38 public class PreAuthenticationDataEncoder
39 {
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47 public static byte[] encode( PaData[] preAuth ) throws IOException
48 {
49 ByteArrayOutputStream baos = new ByteArrayOutputStream();
50 ASN1OutputStream aos = new ASN1OutputStream( baos );
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52 aos.writeObject( encodeSequence( preAuth ) );
53 aos.close();
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55 return baos.toByteArray();
56 }
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62 protected static DERSequence encodeSequence( PaData[] preAuth )
63 {
64 DERSequence sequence = new DERSequence();
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66 for ( int ii = 0; ii < preAuth.length; ii++ )
67 {
68 sequence.add( encode( preAuth[ii] ) );
69 }
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71 return sequence;
72 }
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81 protected static DERSequence encode( PaData preAuth )
82 {
83 DERSequence sequence = new DERSequence();
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85 sequence.add( new DERTaggedObject( 1, DERInteger.valueOf( preAuth.getPaDataType().getOrdinal() ) ) );
86
87 if ( preAuth.getPaDataValue() != null )
88 {
89 sequence.add( new DERTaggedObject( 2, new DEROctetString( preAuth.getPaDataValue() ) ) );
90 }
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92 return sequence;
93 }
94 }