1 /*
   2  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 6313661
  27  * @summary Basic tests for TlsRsaPremasterSecret generator
  28  * @author Andreas Sterbenz
  29  */
  30 
  31 import java.security.Security;
  32 import java.security.Provider;
  33 
  34 import javax.crypto.KeyGenerator;
  35 import javax.crypto.SecretKey;
  36 import java.util.Formatter;
  37 
  38 import sun.security.internal.spec.TlsRsaPremasterSecretParameterSpec;
  39 
  40 public class TestPremaster {
  41 
  42     public static void main(String[] args) throws Exception {
  43         Provider provider = Security.getProvider("SunJCE");
  44 
  45         KeyGenerator kg;
  46 
  47         kg = KeyGenerator.getInstance("SunTlsRsaPremasterSecret", provider);
  48 
  49         try {
  50             kg.generateKey();
  51             throw new Exception("no exception");
  52         } catch (IllegalStateException e) {
  53             System.out.println("OK: " + e);
  54         }
  55 
  56         int[] protocolVersions = {0x0300, 0x0301, 0x0302, 0x0400};
  57         for (int clientVersion : protocolVersions) {
  58             for (int serverVersion : protocolVersions) {
  59                 test(kg, clientVersion, serverVersion);
  60                 if (serverVersion >= clientVersion) {
  61                     break;
  62                 }
  63             }
  64         }
  65 
  66         System.out.println("Done.");
  67     }
  68 
  69     private static void test(KeyGenerator kg,
  70             int clientVersion, int serverVersion) throws Exception {
  71 
  72         System.out.printf(
  73                 "Testing RSA pre-master secret key generation between " +
  74                 "client (0x%04X) and server(0x%04X)%n",
  75                 clientVersion, serverVersion);
  76         kg.init(new TlsRsaPremasterSecretParameterSpec(
  77                                     clientVersion, serverVersion));
  78 
  79         SecretKey key = kg.generateKey();
  80         byte[] encoded = key.getEncoded();
  81         if (encoded != null) {  // raw key material may be not extractable
  82             if (encoded.length != 48) {
  83                 throw new Exception("length: " + encoded.length);
  84             }
  85             int v = versionOf(encoded[0], encoded[1]);
  86             if (clientVersion != v) {
  87                 if (serverVersion != v || clientVersion >= 0x0302) {
  88                     throw new Exception(String.format(
  89                         "version mismatch: (0x%04X) rather than (0x%04X) " +
  90                         "is used in pre-master secret", v, clientVersion));
  91                 }
  92                 System.out.printf("Use compatible version (0x%04X)%n", v);
  93             }
  94             System.out.println("Passed, version matches!");
  95        } else {
  96             System.out.println("Raw key material is not extractable");
  97        }
  98     }
  99 
 100     private static int versionOf(int major, int minor) {
 101         return ((major & 0xFF) << 8) | (minor & 0xFF);
 102     }
 103 }