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| 1 | /* | ||
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 3 | * | ||
| 4 | * This code is free software; you can redistribute it and/or modify it | ||
| 5 | * under the terms of the GNU General Public License version 2 only, as | ||
| 6 | * published by the Free Software Foundation. Oracle designates this | ||
| 7 | * particular file as subject to the "Classpath" exception as provided | ||
| 8 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 9 | * | ||
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 13 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 14 | * accompanied this code). | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License version | ||
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 19 | * | ||
| 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 21 | * or visit www.oracle.com if you need additional information or have any | ||
| 22 | * questions. | ||
| 23 | */ | ||
| 24 | |||
| 25 | /* | ||
| 26 | * | ||
| 27 | * (C) Copyright IBM Corp. 1999 All Rights Reserved. | ||
| 28 | * Copyright 1997 The Open Group Research Institute. All rights reserved. | ||
| 29 | */ | ||
| 30 | |||
| 31 | package sun.security.krb5.internal; | ||
| 32 | |||
| 33 | import sun.security.krb5.*; | ||
| 34 | import sun.security.util.*; | ||
| 35 | import java.util.Vector; | ||
| 36 | import java.io.IOException; | ||
| 37 | import java.math.BigInteger; | ||
| 38 | |||
| 39 | /** | ||
| 40 | * Implements the ASN.1 EncAPRepPart type. | ||
| 41 | * | ||
| 42 | * <xmp> | ||
| 43 | * EncAPRepPart ::= [APPLICATION 27] SEQUENCE { | ||
| 44 | * ctime [0] KerberosTime, | ||
| 45 | * cusec [1] Microseconds, | ||
| 46 | * subkey [2] EncryptionKey OPTIONAL, | ||
| 47 | * seq-number [3] UInt32 OPTIONAL | ||
| 48 | * } | ||
| 49 | * </xmp> | ||
| 50 | * | ||
| 51 | * <p> | ||
| 52 | * This definition reflects the Network Working Group RFC 4120 | ||
| 53 | * specification available at | ||
| 54 | * <a href="http://www.ietf.org/rfc/rfc4120.txt"> | ||
| 55 | * http://www.ietf.org/rfc/rfc4120.txt</a>. | ||
| 56 | */ | ||
| 57 | public class EncAPRepPart { | ||
| 58 | |||
| 59 | public KerberosTime ctime; | ||
| 60 | public int cusec; | ||
| 61 | EncryptionKey subKey; //optional | ||
| 62 | Integer seqNumber; //optional | ||
| 63 | |||
| 64 | public EncAPRepPart( | ||
| 65 | KerberosTime new_ctime, | ||
| 66 | int new_cusec, | ||
| 67 | EncryptionKey new_subKey, | ||
| 68 | Integer new_seqNumber) { | ||
| 69 | ctime = new_ctime; | ||
| 70 | cusec = new_cusec; | ||
| 71 | subKey = new_subKey; | ||
| 72 | seqNumber = new_seqNumber; | ||
| 73 | } | ||
| 74 | |||
| 75 | public EncAPRepPart(byte[] data) | ||
| 76 | throws Asn1Exception, IOException { | ||
| 77 | init(new DerValue(data)); | ||
| 78 | } | ||
| 79 | |||
| 80 | public EncAPRepPart(DerValue encoding) | ||
| 81 | throws Asn1Exception, IOException { | ||
| 82 | init(encoding); | ||
| 83 | } | ||
| 84 | |||
| 85 | /** | ||
| 86 | * Initializes an EncaPRepPart object. | ||
| 87 | * @param encoding a single DER-encoded value. | ||
| 88 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 89 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 90 | */ | ||
| 91 | private void init(DerValue encoding) throws Asn1Exception, IOException { | ||
| 92 | DerValue der, subDer; | ||
| 93 | if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x1B) | ||
| 94 | || (encoding.isApplication() != true) | ||
| 95 | || (encoding.isConstructed() != true)) { | ||
| 96 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 97 | } | ||
| 98 | der = encoding.getData().getDerValue(); | ||
| 99 | if (der.getTag() != DerValue.tag_Sequence) { | ||
| 100 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 101 | } | ||
| 102 | ctime = KerberosTime.parse(der.getData(), (byte) 0x00, true); | ||
| 103 | subDer = der.getData().getDerValue(); | ||
| 104 | if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x01) { | ||
| 105 | cusec = subDer.getData().getBigInteger().intValue(); | ||
| 106 | } else { | ||
| 107 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 108 | } | ||
| 109 | if (der.getData().available() > 0) { | ||
| 110 | subKey = EncryptionKey.parse(der.getData(), (byte) 0x02, true); | ||
| 111 | } else { | ||
| 112 | subKey = null; | ||
| 113 | seqNumber = null; | ||
| 114 | } | ||
| 115 | if (der.getData().available() > 0) { | ||
| 116 | subDer = der.getData().getDerValue(); | ||
| 117 | if ((subDer.getTag() & 0x1F) != 0x03) { | ||
| 118 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 119 | } | ||
| 120 | seqNumber = new Integer(subDer.getData().getBigInteger().intValue()); | ||
| 121 | } else { | ||
| 122 | seqNumber = null; | ||
| 123 | } | ||
| 124 | if (der.getData().available() > 0) { | ||
| 125 | throw new Asn1Exception(Krb5.ASN1_BAD_ID); | ||
| 126 | } | ||
| 127 | } | ||
| 128 | |||
| 129 | /** | ||
| 130 | * Encodes an EncAPRepPart object. | ||
| 131 | * @return byte array of encoded EncAPRepPart object. | ||
| 132 | * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | ||
| 133 | * @exception IOException if an I/O error occurs while reading encoded data. | ||
| 134 | */ | ||
| 135 | public byte[] asn1Encode() throws Asn1Exception, IOException { | ||
| 136 | Vector<DerValue> v = new Vector<>(); | ||
| 137 | DerOutputStream temp = new DerOutputStream(); | ||
| 138 | v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, | ||
| 139 | true, (byte) 0x00), ctime.asn1Encode())); | ||
| 140 | temp.putInteger(BigInteger.valueOf(cusec)); | ||
| 141 | v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, | ||
| 142 | true, (byte) 0x01), temp.toByteArray())); | ||
| 143 | if (subKey != null) { | ||
| 144 | v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, | ||
| 145 | true, (byte) 0x02), subKey.asn1Encode())); | ||
| 146 | } | ||
| 147 | if (seqNumber != null) { | ||
| 148 | temp = new DerOutputStream(); | ||
| 149 | // encode as an unsigned integer (UInt32) | ||
| 150 | temp.putInteger(BigInteger.valueOf(seqNumber.longValue())); | ||
| 151 | v.addElement(new DerValue(DerValue.createTag(DerValue.TAG_CONTEXT, | ||
| 152 | true, (byte) 0x03), temp.toByteArray())); | ||
| 153 | } | ||
| 154 | DerValue der[] = new DerValue[v.size()]; | ||
| 155 | v.copyInto(der); | ||
| 156 | temp = new DerOutputStream(); | ||
| 157 | temp.putSequence(der); | ||
| 158 | DerOutputStream out = new DerOutputStream(); | ||
| 159 | out.write(DerValue.createTag(DerValue.TAG_APPLICATION, | ||
| 160 | true, (byte) 0x1B), temp); | ||
| 161 | return out.toByteArray(); | ||
| 162 | } | ||
| 163 | |||
| 164 | public final EncryptionKey getSubKey() { | ||
| 165 | return subKey; | ||
| 166 | } | ||
| 167 | |||
| 168 | public final Integer getSeqNumber() { | ||
| 169 | return seqNumber; | ||
| 170 | } | ||
| 171 | } | ||