mcs/class/corlib/Test/System.Security.Cryptography/SymmetricAlgorithm2Test.cs

   1 //
   2 // SymmetricAlgorithm2Test.cs -
   3 //      Non generated NUnit Test Cases for SymmetricAlgorithm
   4 //
   5 // Author:
   6 //      Sebastien Pouliot  <spouliot@ximian.com>
   7 //
   8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using NUnit.Framework;
  31 using System;
  32 using System.IO;
  33 using System.Security.Cryptography;
  34 using System.Text;
  35
  36 namespace MonoTests.System.Security.Cryptography {
  37
  38         // SymmetricAlgorithm is a abstract class - so most of it's functionality wont
  39         // be tested here (but will be in its descendants).
  40
  41         [TestFixture]
  42         public class SymmetricAlgorithm2Test : Assertion {
  43
  44                 public void AssertEquals (string msg, byte[] array1, byte[] array2)
  45                 {
  46                         AllTests.AssertEquals (msg, array1, array2);
  47                 }
  48
  49                 [Test]
  50                 public void KeySize_SameSize ()
  51                 {
  52                         using (SymmetricAlgorithm algo = SymmetricAlgorithm.Create ()) {
  53                                 // get a copy of the key
  54                                 byte[] key = algo.Key;
  55                                 int ks = algo.KeySize;
  56                                 // set the key size
  57                                 algo.KeySize = ks;
  58                                 // did it change the key ? Yes!
  59                                 Assert ("Key", BitConverter.ToString (key) != BitConverter.ToString (algo.Key));
  60                         }
  61                 }
  62
  63                 [Test]
  64                 public void BlockSize_SameSize ()
  65                 {
  66                         using (SymmetricAlgorithm algo = SymmetricAlgorithm.Create ()) {
  67                                 // get a copy of the IV
  68                                 byte[] iv = algo.IV;
  69                                 int bs = algo.BlockSize;
  70                                 // set the iv size
  71                                 algo.BlockSize = bs;
  72                                 // did it change the IV ? No!
  73                                 Assert ("IV", BitConverter.ToString (iv) == BitConverter.ToString (algo.IV));
  74                         }
  75                 }
  76
  77                 [Test]
  78                 [ExpectedException (typeof (CryptographicException))]
  79                 public void InvalidBlockSize ()
  80                 {
  81                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  82                         algo.BlockSize = 255;
  83                 }
  84
  85                 [Test]
  86                 [ExpectedException (typeof (CryptographicException))]
  87                 public void InvalidFeedbackSize ()
  88                 {
  89                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  90                         algo.FeedbackSize = algo.BlockSize + 1;
  91                 }
  92
  93                 [Test]
  94                 [ExpectedException (typeof (ArgumentNullException))]
  95                 public void IV_Null ()
  96                 {
  97                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  98                         algo.IV = null;
  99                 }
 100
 101                 [Test]
 102 #if NET_2_0
 103                 [ExpectedException (typeof (CryptographicException))]
 104 #endif
 105                 public void IV_None ()
 106                 {
 107                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 108                         algo.IV = new byte [0]; // e.g. stream ciphers
 109                 }
 110
 111                 [Test]
 112                 [ExpectedException (typeof (CryptographicException))]
 113                 public void IV_TooBig ()
 114                 {
 115                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 116                         algo.IV = new byte [algo.BlockSize + 1];
 117                 }
 118
 119                 [Test]
 120                 [ExpectedException (typeof (ArgumentNullException))]
 121                 public void Key_Null ()
 122                 {
 123                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 124                         algo.Key = null;
 125                 }
 126
 127                 [Test]
 128                 [ExpectedException (typeof (CryptographicException))]
 129                 public void Key_WrongSize ()
 130                 {
 131                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 132                         algo.Key = new byte [255];
 133                 }
 134
 135                 [Test]
 136                 [ExpectedException (typeof (CryptographicException))]
 137                 public void KeySize_WrongSize ()
 138                 {
 139                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 140                         int n = 0;
 141                         while (algo.ValidKeySize (++n));
 142                         algo.KeySize = n;
 143                 }
 144
 145                 [Test]
 146                 [ExpectedException (typeof (CryptographicException))]
 147                 public void InvalidCipherMode ()
 148                 {
 149                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 150                         algo.Mode = (CipherMode) 255;
 151                 }
 152
 153                 [Test]
 154                 [ExpectedException (typeof (CryptographicException))]
 155                 public void InvalidPaddingMode ()
 156                 {
 157                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 158                         algo.Padding = (PaddingMode) 255;
 159                 }
 160
 161                 [Test]
 162 #if NET_2_0
 163                 [ExpectedException (typeof (CryptographicException))]
 164 #endif
 165                 public void FeedbackZero ()
 166                 {
 167                         // thanks to Yakk for the sample
 168                         DES des = new DESCryptoServiceProvider();
 169                         des.FeedbackSize = 0;
 170                         des.Padding = PaddingMode.None;
 171                         des.Mode = CipherMode.ECB;
 172                         des.Key = new byte [8] { 8, 7, 6, 5, 4, 3, 2, 1 };
 173
 174                         ICryptoTransform enc = des.CreateEncryptor ();
 175                         byte[] response = new byte [16];
 176                         byte[] challenge = new byte [16] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
 177
 178                         enc.TransformBlock (challenge, 0, challenge.Length, response, 0);
 179                         AssertEquals ("7A-64-CD-1B-4F-EE-B5-92-54-90-53-E9-83-71-A6-0C", BitConverter.ToString (response));
 180                 }
 181         }
 182 }