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 {
  43
  44                 [Test]
  45                 public void KeySize_SameSize ()
  46                 {
  47                         using (SymmetricAlgorithm algo = SymmetricAlgorithm.Create ()) {
  48                                 // get a copy of the key
  49                                 byte[] key = algo.Key;
  50                                 int ks = algo.KeySize;
  51                                 // set the key size
  52                                 algo.KeySize = ks;
  53                                 // did it change the key ? Yes!
  54                                 Assert.AreNotEqual (BitConverter.ToString (key), BitConverter.ToString (algo.Key), "Key");
  55                         }
  56                 }
  57
  58                 [Test]
  59                 public void BlockSize_SameSize ()
  60                 {
  61                         using (SymmetricAlgorithm algo = SymmetricAlgorithm.Create ()) {
  62                                 // get a copy of the IV
  63                                 byte[] iv = algo.IV;
  64                                 int bs = algo.BlockSize;
  65                                 // set the iv size
  66                                 algo.BlockSize = bs;
  67                                 // did it change the IV ? No!
  68                                 Assert.AreEqual (BitConverter.ToString (iv), BitConverter.ToString (algo.IV), "IV");
  69                         }
  70                 }
  71
  72                 [Test]
  73                 [ExpectedException (typeof (CryptographicException))]
  74                 public void InvalidBlockSize ()
  75                 {
  76                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  77                         algo.BlockSize = 255;
  78                 }
  79
  80                 [Test]
  81                 [ExpectedException (typeof (CryptographicException))]
  82                 public void InvalidFeedbackSize ()
  83                 {
  84                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  85                         algo.FeedbackSize = algo.BlockSize + 1;
  86                 }
  87
  88                 [Test]
  89                 [ExpectedException (typeof (ArgumentNullException))]
  90                 public void IV_Null ()
  91                 {
  92                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
  93                         algo.IV = null;
  94                 }
  95
  96                 [Test]
  97                 [ExpectedException (typeof (CryptographicException))]
  98                 public void IV_None ()
  99                 {
 100                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 101                         algo.IV = new byte [0]; // e.g. stream ciphers
 102                 }
 103
 104                 [Test]
 105                 [ExpectedException (typeof (CryptographicException))]
 106                 public void IV_TooBig ()
 107                 {
 108                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 109                         algo.IV = new byte [algo.BlockSize + 1];
 110                 }
 111
 112                 [Test]
 113                 [ExpectedException (typeof (ArgumentNullException))]
 114                 public void Key_Null ()
 115                 {
 116                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 117                         algo.Key = null;
 118                 }
 119
 120                 [Test]
 121                 [ExpectedException (typeof (CryptographicException))]
 122                 public void Key_WrongSize ()
 123                 {
 124                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 125                         algo.Key = new byte [255];
 126                 }
 127
 128                 [Test]
 129                 [ExpectedException (typeof (CryptographicException))]
 130                 public void KeySize_WrongSize ()
 131                 {
 132                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 133                         int n = 0;
 134                         while (algo.ValidKeySize (++n));
 135                         algo.KeySize = n;
 136                 }
 137
 138                 [Test]
 139                 [ExpectedException (typeof (CryptographicException))]
 140                 public void InvalidCipherMode ()
 141                 {
 142                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 143                         algo.Mode = (CipherMode) 255;
 144                 }
 145
 146                 [Test]
 147                 [ExpectedException (typeof (CryptographicException))]
 148                 public void InvalidPaddingMode ()
 149                 {
 150                         SymmetricAlgorithm algo = SymmetricAlgorithm.Create ();
 151                         algo.Padding = (PaddingMode) 255;
 152                 }
 153
 154                 [Test]
 155                 [ExpectedException (typeof (CryptographicException))]
 156                 public void FeedbackZero ()
 157                 {
 158                         // thanks to Yakk for the sample
 159                         DES des = new DESCryptoServiceProvider();
 160                         des.FeedbackSize = 0;
 161                         des.Padding = PaddingMode.None;
 162                         des.Mode = CipherMode.ECB;
 163                         des.Key = new byte [8] { 8, 7, 6, 5, 4, 3, 2, 1 };
 164
 165                         ICryptoTransform enc = des.CreateEncryptor ();
 166                         byte[] response = new byte [16];
 167                         byte[] challenge = new byte [16] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
 168
 169                         enc.TransformBlock (challenge, 0, challenge.Length, response, 0);
 170                         Assert.AreEqual ("7A-64-CD-1B-4F-EE-B5-92-54-90-53-E9-83-71-A6-0C", BitConverter.ToString (response));
 171                 }
 172         }
 173 }