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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.krb5.EncryptionKey; | |
| 35 | +import sun.security.util.*; | |
| 36 | +import java.util.Vector; | |
| 37 | +import java.io.IOException; | |
| 38 | +import java.math.BigInteger; | |
| 39 | + | |
| 40 | +/** | |
| 41 | + * Implements the ASN.1 EncKDCRepPart type. | |
| 42 | + * | |
| 43 | + * <xmp> | |
| 44 | + * EncKDCRepPart ::= SEQUENCE { | |
| 45 | + * key [0] EncryptionKey, | |
| 46 | + * last-req [1] LastReq, | |
| 47 | + * nonce [2] UInt32, | |
| 48 | + * key-expiration [3] KerberosTime OPTIONAL, | |
| 49 | + * flags [4] TicketFlags, | |
| 50 | + * authtime [5] KerberosTime, | |
| 51 | + * starttime [6] KerberosTime OPTIONAL, | |
| 52 | + * endtime [7] KerberosTime, | |
| 53 | + * renew-till [8] KerberosTime OPTIONAL, | |
| 54 | + * srealm [9] Realm, | |
| 55 | + * sname [10] PrincipalName, | |
| 56 | + * caddr [11] HostAddresses OPTIONAL | |
| 57 | + * } | |
| 58 | + * </xmp> | |
| 59 | + * | |
| 60 | + * <p> | |
| 61 | + * This definition reflects the Network Working Group RFC 4120 | |
| 62 | + * specification available at | |
| 63 | + * <a href="http://www.ietf.org/rfc/rfc4120.txt"> | |
| 64 | + * http://www.ietf.org/rfc/rfc4120.txt</a>. | |
| 65 | + */ | |
| 66 | +public class EncKDCRepPart { | |
| 67 | + | |
| 68 | + public EncryptionKey key; | |
| 69 | + public LastReq lastReq; | |
| 70 | + public int nonce; | |
| 71 | + public KerberosTime keyExpiration; //optional | |
| 72 | + public TicketFlags flags; | |
| 73 | + public KerberosTime authtime; | |
| 74 | + public KerberosTime starttime; //optional | |
| 75 | + public KerberosTime endtime; | |
| 76 | + public KerberosTime renewTill; //optional | |
| 77 | + public Realm srealm; | |
| 78 | + public PrincipalName sname; | |
| 79 | + public HostAddresses caddr; //optional | |
| 80 | + public int msgType; //not included in sequence | |
| 81 | + | |
| 82 | + public EncKDCRepPart( | |
| 83 | + EncryptionKey new_key, | |
| 84 | + LastReq new_lastReq, | |
| 85 | + int new_nonce, | |
| 86 | + KerberosTime new_keyExpiration, | |
| 87 | + TicketFlags new_flags, | |
| 88 | + KerberosTime new_authtime, | |
| 89 | + KerberosTime new_starttime, | |
| 90 | + KerberosTime new_endtime, | |
| 91 | + KerberosTime new_renewTill, | |
| 92 | + Realm new_srealm, | |
| 93 | + PrincipalName new_sname, | |
| 94 | + HostAddresses new_caddr, | |
| 95 | + int new_msgType) { | |
| 96 | + key = new_key; | |
| 97 | + lastReq = new_lastReq; | |
| 98 | + nonce = new_nonce; | |
| 99 | + keyExpiration = new_keyExpiration; | |
| 100 | + flags = new_flags; | |
| 101 | + authtime = new_authtime; | |
| 102 | + starttime = new_starttime; | |
| 103 | + endtime = new_endtime; | |
| 104 | + renewTill = new_renewTill; | |
| 105 | + srealm = new_srealm; | |
| 106 | + sname = new_sname; | |
| 107 | + caddr = new_caddr; | |
| 108 | + msgType = new_msgType; | |
| 109 | + } | |
| 110 | + | |
| 111 | + public EncKDCRepPart() { | |
| 112 | + } | |
| 113 | + | |
| 114 | + public EncKDCRepPart(byte[] data, int rep_type) | |
| 115 | + throws Asn1Exception, IOException, RealmException { | |
| 116 | + init(new DerValue(data), rep_type); | |
| 117 | + } | |
| 118 | + | |
| 119 | + public EncKDCRepPart(DerValue encoding, int rep_type) | |
| 120 | + throws Asn1Exception, IOException, RealmException { | |
| 121 | + init(encoding, rep_type); | |
| 122 | + } | |
| 123 | + | |
| 124 | + /** | |
| 125 | + * Initializes an EncKDCRepPart object. | |
| 126 | + * | |
| 127 | + * @param encoding a single DER-encoded value. | |
| 128 | + * @param rep_type type of the encrypted reply message. | |
| 129 | + * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | |
| 130 | + * @exception IOException if an I/O error occurs while reading encoded data. | |
| 131 | + * @exception RealmException if an error occurs while decoding an Realm object. | |
| 132 | + */ | |
| 133 | + protected void init(DerValue encoding, int rep_type) | |
| 134 | + throws Asn1Exception, IOException, RealmException { | |
| 135 | + DerValue der, subDer; | |
| 136 | + //implementations return the incorrect tag value, so | |
| 137 | + //we don't use the above line; instead we use the following | |
| 138 | + msgType = (encoding.getTag() & (byte) 0x1F); | |
| 139 | + if (msgType != Krb5.KRB_ENC_AS_REP_PART && | |
| 140 | + msgType != Krb5.KRB_ENC_TGS_REP_PART) { | |
| 141 | + throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| 142 | + } | |
| 143 | + der = encoding.getData().getDerValue(); | |
| 144 | + if (der.getTag() != DerValue.tag_Sequence) { | |
| 145 | + throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| 146 | + } | |
| 147 | + key = EncryptionKey.parse(der.getData(), (byte) 0x00, false); | |
| 148 | + lastReq = LastReq.parse(der.getData(), (byte) 0x01, false); | |
| 149 | + subDer = der.getData().getDerValue(); | |
| 150 | + if ((subDer.getTag() & (byte) 0x1F) == (byte) 0x02) { | |
| 151 | + nonce = subDer.getData().getBigInteger().intValue(); | |
| 152 | + } else { | |
| 153 | + throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| 154 | + } | |
| 155 | + keyExpiration = KerberosTime.parse(der.getData(), (byte) 0x03, true); | |
| 156 | + flags = TicketFlags.parse(der.getData(), (byte) 0x04, false); | |
| 157 | + authtime = KerberosTime.parse(der.getData(), (byte) 0x05, false); | |
| 158 | + starttime = KerberosTime.parse(der.getData(), (byte) 0x06, true); | |
| 159 | + endtime = KerberosTime.parse(der.getData(), (byte) 0x07, false); | |
| 160 | + renewTill = KerberosTime.parse(der.getData(), (byte) 0x08, true); | |
| 161 | + srealm = Realm.parse(der.getData(), (byte) 0x09, false); | |
| 162 | + sname = PrincipalName.parse(der.getData(), (byte) 0x0A, false); | |
| 163 | + if (der.getData().available() > 0) { | |
| 164 | + caddr = HostAddresses.parse(der.getData(), (byte) 0x0B, true); | |
| 165 | + } | |
| 166 | + if (der.getData().available() > 0) { | |
| 167 | + throw new Asn1Exception(Krb5.ASN1_BAD_ID); | |
| 168 | + } | |
| 169 | + } | |
| 170 | + | |
| 171 | + /** | |
| 172 | + * Encodes an EncKDCRepPart object. | |
| 173 | + * @param rep_type type of encrypted reply message. | |
| 174 | + * @return byte array of encoded EncKDCRepPart object. | |
| 175 | + * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. | |
| 176 | + * @exception IOException if an I/O error occurs while reading encoded data. | |
| 177 | + */ | |
| 178 | + public byte[] asn1Encode(int rep_type) throws Asn1Exception, | |
| 179 | + IOException { | |
| 180 | + DerOutputStream temp = new DerOutputStream(); | |
| 181 | + DerOutputStream bytes = new DerOutputStream(); | |
| 182 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 183 | + true, (byte) 0x00), key.asn1Encode()); | |
| 184 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 185 | + true, (byte) 0x01), lastReq.asn1Encode()); | |
| 186 | + temp.putInteger(BigInteger.valueOf(nonce)); | |
| 187 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 188 | + true, (byte) 0x02), temp); | |
| 189 | + | |
| 190 | + if (keyExpiration != null) { | |
| 191 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 192 | + true, (byte) 0x03), keyExpiration.asn1Encode()); | |
| 193 | + } | |
| 194 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 195 | + true, (byte) 0x04), flags.asn1Encode()); | |
| 196 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 197 | + true, (byte) 0x05), authtime.asn1Encode()); | |
| 198 | + if (starttime != null) { | |
| 199 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 200 | + true, (byte) 0x06), starttime.asn1Encode()); | |
| 201 | + } | |
| 202 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 203 | + true, (byte) 0x07), endtime.asn1Encode()); | |
| 204 | + if (renewTill != null) { | |
| 205 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 206 | + true, (byte) 0x08), renewTill.asn1Encode()); | |
| 207 | + } | |
| 208 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 209 | + true, (byte) 0x09), srealm.asn1Encode()); | |
| 210 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 211 | + true, (byte) 0x0A), sname.asn1Encode()); | |
| 212 | + if (caddr != null) { | |
| 213 | + bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, | |
| 214 | + true, (byte) 0x0B), caddr.asn1Encode()); | |
| 215 | + } | |
| 216 | + //should use the rep_type to build the encoding | |
| 217 | + //but other implementations do not; it is ignored and | |
| 218 | + //the cached msgType is used instead | |
| 219 | + temp = new DerOutputStream(); | |
| 220 | + temp.write(DerValue.tag_Sequence, bytes); | |
| 221 | + bytes = new DerOutputStream(); | |
| 222 | + bytes.write(DerValue.createTag(DerValue.TAG_APPLICATION, | |
| 223 | + true, (byte) msgType), temp); | |
| 224 | + return bytes.toByteArray(); | |
| 225 | + } | |
| 226 | +} | |