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.ktab;

    32 

    33 import sun.security.krb5.*;

    34 import sun.security.krb5.internal.*;

    35 import java.io.UnsupportedEncodingException;

    36 

    37 /**

    38  * This class represents a Key Table entry. Each entry contains the service principal of

    39  * the key, time stamp, key version and secret key itself.

    40  *

    41  * @author Yanni Zhang

    42  */

    43 public class KeyTabEntry implements KeyTabConstants {

    44     PrincipalName service;

    45     Realm realm;

    46     KerberosTime timestamp;

    47     int keyVersion;

    48     int keyType;

    49     byte[] keyblock = null;

    50     boolean DEBUG = Krb5.DEBUG;

    51 

    52     public KeyTabEntry (PrincipalName new_service, Realm new_realm, KerberosTime new_time,

    53                         int new_keyVersion, int new_keyType, byte[] new_keyblock) {

    54         service = new_service;

    55         realm = new_realm;

    56         timestamp = new_time;

    57         keyVersion = new_keyVersion;

    58         keyType = new_keyType;

    59         if (new_keyblock != null) {

    60             keyblock = new_keyblock.clone();

    61         }

    62     }

    63 

    64     public PrincipalName getService() {

    65         return service;

    66     }

    67 

    68     public EncryptionKey getKey() {

    69         EncryptionKey key = new EncryptionKey(keyblock,

    70                                               keyType,

    71                                               keyVersion);

    72         return key;

    73     }

    74 

    75     public String getKeyString() {

    76         StringBuilder sb = new StringBuilder("0x");

    77         for (int i = 0; i < keyblock.length; i++) {

    78             sb.append(String.format("%02x", keyblock[i]&0xff));

    79         }

    80         return sb.toString();

    81     }

    82     public int entryLength() {

    83         int totalPrincipalLength = 0;

    84         String[] names = service.getNameStrings();

    85         for (int i = 0; i < names.length; i++) {

    86             try {

    87                 totalPrincipalLength += principalSize + names[i].getBytes("8859_1").length;

    88             } catch (UnsupportedEncodingException exc) {

    89             }

    90         }

    91 

    92         int realmLen = 0;

    93         try {

    94             realmLen = realm.toString().getBytes("8859_1").length;

    95         } catch (UnsupportedEncodingException exc) {

    96         }

    97 

    98         int size = principalComponentSize +  realmSize + realmLen

    99             + totalPrincipalLength + principalTypeSize

   100             + timestampSize + keyVersionSize

   101             + keyTypeSize + keySize + keyblock.length;

   102 

   103         if (DEBUG) {

   104             System.out.println(">>> KeyTabEntry: key tab entry size is " + size);

   105         }

   106         return size;

   107     }

   108 

   109     public KerberosTime getTimeStamp() {

   110         return timestamp;

   111     }

   112 }