1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 package org.apache.directory.server.kerberos.shared.io.encoder;
21
22
23 import java.io.ByteArrayOutputStream;
24 import java.io.IOException;
25
26 import org.apache.directory.server.kerberos.shared.messages.value.EncryptedData;
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;
32
33
34
35
36
37
38 public class EncryptedDataEncoder
39 {
40
41
42
43
44
45
46
47 public static byte[] encode( EncryptedData encryptedData ) throws IOException
48 {
49 ByteArrayOutputStream baos = new ByteArrayOutputStream();
50 ASN1OutputStream aos = new ASN1OutputStream( baos );
51
52 aos.writeObject( encodeSequence( encryptedData ) );
53 aos.close();
54
55 return baos.toByteArray();
56 }
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71 public static DERSequence encodeSequence( EncryptedData encryptedData )
72 {
73 DERSequence sequence = new DERSequence();
74
75 sequence.add( new DERTaggedObject( 0, DERInteger.valueOf( encryptedData.getEType().getOrdinal() ) ) );
76
77 if ( encryptedData.hasKvno() )
78 {
79 sequence.add( new DERTaggedObject( 1, DERInteger.valueOf( encryptedData.getKvno() ) ) );
80 }
81
82 sequence.add( new DERTaggedObject( 2, new DEROctetString( encryptedData.getCipher() ) ) );
83
84 return sequence;
85 }
86 }