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

   1 //
   2 // RSAOAEPKeyExchangeDeformatterTest.cs - NUnit Test Cases for RSAOAEPKeyExchangeDeformatter
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (sebastien@ximian.com)
   6 //
   7 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // (C) 2004 Novell (http://www.novell.com)
   9 //
  10
  11 using NUnit.Framework;
  12 using System;
  13 using System.Security.Cryptography;
  14
  15 namespace MonoTests.System.Security.Cryptography {
  16
  17         [TestFixture]
  18         public class RSAOAEPKeyExchangeDeformatterTest : Assertion {
  19
  20                 protected static RSA key;
  21
  22                 [SetUp]
  23                 void SetUp ()
  24                 {
  25                         // generating a keypair is REALLY long and the framework
  26                         // makes sure that we generate one (even if create an object
  27                         // to import an existing key)
  28                         if (key == null) {
  29                                 key = RSA.Create ();
  30                                 key.ImportParameters (AllTests.GetRsaKey (true));
  31                         }
  32                 }
  33
  34                 public void AssertEquals (string msg, byte[] array1, byte[] array2)
  35                 {
  36                         AllTests.AssertEquals (msg, array1, array2);
  37                 }
  38
  39                 // LAMESPEC: RSAOAEPKeyExchangeDeformatter.RNG versus RSAOAEPKeyExchangeFormatter.Rng
  40                 [Test]
  41                 public void Properties ()
  42                 {
  43                         RSAOAEPKeyExchangeDeformatter keyex = new RSAOAEPKeyExchangeDeformatter ();
  44                         keyex.SetKey (key);
  45                         Assertion.AssertNull("RSAOAEPKeyExchangeDeformatter.Parameters", keyex.Parameters);
  46                         Assertion.AssertEquals("RSAOAEPKeyExchangeDeformatter.ToString()", "System.Security.Cryptography.RSAOAEPKeyExchangeDeformatter", keyex.ToString ());
  47                 }
  48
  49                 // TestExchangeMin (1)
  50                 // Test vector (EM) generated by CryptoAPI on Windows XP
  51                 [Test]
  52                 public void CapiExchangeMin ()
  53                 {
  54                         byte[] M = { 0x01 };
  55                         byte[] EM = { 0x4D, 0x5F, 0x26, 0x67, 0x88, 0x07, 0xF1, 0xB5, 0x85, 0x33, 0xDA, 0x8B, 0xD6, 0x9E, 0x9B, 0x56, 0xE6, 0x54, 0x49, 0xF3, 0x4A, 0x8B, 0x5B, 0xB2, 0xCB, 0x10, 0x50, 0x91, 0x85, 0xBC, 0xE1, 0x5E, 0xDC, 0x8A, 0xAE, 0x63, 0xAD, 0x57, 0xC3, 0x03, 0x78, 0xDD, 0xCE, 0xCD, 0x46, 0x71, 0x43, 0x2F, 0x7F, 0xA4, 0x6A, 0x93, 0xE4, 0xB7, 0x4C, 0x36, 0x92, 0x5C, 0xFF, 0xAC, 0x32, 0xE8, 0x71, 0x1E, 0x69, 0xD6, 0x8C, 0xB5, 0x65, 0xA5, 0x83, 0xC2, 0x3F, 0xED, 0x35, 0x6F, 0x03, 0x0D, 0x4B, 0xE1, 0x0F, 0x7B, 0x5D, 0x0A, 0x68, 0x90, 0x71, 0xA0, 0xD6, 0xC0, 0xEC, 0x6B, 0x24, 0x45, 0x3D, 0x9C, 0x11, 0xD9, 0xC8, 0xFB, 0xC8, 0x8F, 0xDB, 0x48, 0x70, 0x1F, 0xC4, 0x7D, 0x83, 0x58, 0x95, 0xDC, 0x36, 0xA0, 0x68, 0xE1, 0xCF, 0x2D, 0xA9, 0x8A, 0xF0, 0xB8, 0xA6, 0x0D, 0x6E, 0xA6, 0x9C, 0xBC };
  56
  57                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
  58                         try {
  59                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
  60                                 AssertEquals ("RSAOAEPKeyExchangeDeformatter 1", M, Mback);
  61                         }
  62                         catch (CryptographicException ce) {
  63                                 // not supported by every version of Windows - Minimum: Windows XP
  64                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
  65                         }
  66                 }
  67
  68                 // test with a message 128 bits (16 bytes) long
  69                 // Test vector (EM) generated by CryptoAPI on Windows XP
  70                 [Test]
  71                 public void CapiExchange128 ()
  72                 {
  73                         byte[] M = { 0xd4, 0x36, 0xe9, 0x95, 0x69, 0xfd, 0x32, 0xa7, 0xc8, 0xa0, 0x5b, 0xbc, 0x90, 0xd3, 0x2c, 0x49 };
  74                         byte[] EM = { 0x6D, 0xAA, 0xBC, 0x7C, 0xE7, 0x7C, 0xE6, 0x16, 0x72, 0x6F, 0xBE, 0xAF, 0x26, 0xBF, 0x87, 0x77, 0xB5, 0x47, 0x25, 0x37, 0x01, 0xC7, 0xD8, 0x18, 0xA8, 0x09, 0x0F, 0x1F, 0x13, 0x24, 0xD0, 0x2A, 0xD4, 0xDC, 0x5A, 0x2D, 0x91, 0x6D, 0x11, 0x6C, 0x1A, 0x67, 0xB2, 0xFC, 0xA3, 0xE7, 0xF4, 0xEF, 0xDC, 0xEC, 0xB2, 0xAF, 0x42, 0xB5, 0xD9, 0x7A, 0x6D, 0xE5, 0x76, 0xBA, 0x7D, 0x04, 0xCA, 0x17, 0xB0, 0x06, 0x88, 0x4D, 0xE8, 0xCC, 0x82, 0xEA, 0x13, 0xC8, 0x12, 0x05, 0x05, 0xC6, 0xB0, 0x4B, 0x53, 0x1D, 0x07, 0xFA, 0x09, 0x64, 0x30, 0xCD, 0x5C, 0xE3, 0x41, 0xB1, 0x25, 0x94, 0x05, 0x5A, 0xC2, 0xD8, 0x2E, 0xC4, 0x39, 0x51, 0x73, 0x75, 0x0C, 0x4B, 0x2F, 0x4B, 0xAD, 0x04, 0x54, 0x32, 0x30, 0x94, 0xF4, 0xFE, 0x92, 0xF4, 0xB4, 0x54, 0x07, 0x22, 0xCD, 0xB5, 0xB2, 0x01, 0x95, 0xA0 };
  75
  76                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
  77                         try {
  78                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
  79                                 AssertEquals ("RSAOAEPKeyExchangeFormatter 1", M, Mback);
  80                         }
  81                         catch (CryptographicException ce) {
  82                                 // not supported by every version of Windows - Minimum: Windows XP
  83                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
  84                         }
  85                 }
  86
  87                 // test with a message 160 bits (20 bytes) long
  88                 // Test vector (EM) generated by CryptoAPI on Windows XP
  89                 [Test]
  90                 public void CapiExchange192 ()
  91                 {
  92                         byte[] M = { 0xd4, 0x36, 0xe9, 0x95, 0x69, 0xfd, 0x32, 0xa7, 0xc8, 0xa0, 0x5b, 0xbc, 0x90, 0xd3, 0x2c, 0x49, 0x00, 0x00, 0x00, 0x00 };
  93                         byte[] EM = { 0x72, 0x0A, 0x0E, 0xA0, 0x8C, 0x40, 0x69, 0x9D, 0x78, 0xBC, 0x94, 0x4B, 0x2C, 0x14, 0xC0, 0xC8, 0x13, 0x8B, 0x6D, 0x2F, 0x01, 0xE3, 0x45, 0x33, 0xE7, 0x9B, 0x87, 0xDB, 0x37, 0xBD, 0xA9, 0x63, 0xCC, 0x94, 0x8F, 0xBB, 0x1D, 0x61, 0xA1, 0x5E, 0x6A, 0x33, 0xBD, 0xD5, 0xC8, 0x22, 0x40, 0xB1, 0x32, 0xFB, 0x6F, 0x2A, 0x3B, 0x8A, 0x15, 0x4E, 0xC1, 0x25, 0xF0, 0x34, 0x17, 0x9A, 0x68, 0x34, 0x27, 0x5B, 0x49, 0xC5, 0xEA, 0x4D, 0x7F, 0x07, 0x4C, 0xAC, 0xF8, 0xE3, 0xD7, 0x9E, 0x72, 0xB0, 0xD1, 0xAD, 0x9E, 0x9C, 0xBB, 0xC6, 0x79, 0x14, 0x63, 0x5E, 0x13, 0xD1, 0x02, 0xDE, 0x57, 0xB5, 0xBC, 0x57, 0x68, 0xAC, 0xE3, 0xEF, 0x79, 0xED, 0xAF, 0xC0, 0xBB, 0xFE, 0xB3, 0xA6, 0x4C, 0xE8, 0x79, 0xE2, 0x3A, 0xB3, 0x37, 0x97, 0x90, 0x05, 0xCF, 0xB9, 0x1A, 0x92, 0xEC, 0x73, 0xC5, 0x8D };
  94
  95                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
  96                         try {
  97                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
  98                                 AssertEquals ("RSAOAEPKeyExchangeFormatter 1", M, Mback);
  99                         }
 100                         catch (CryptographicException ce) {
 101                                 // not supported by every version of Windows - Minimum: Windows XP
 102                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 103                         }
 104                 }
 105
 106                 // Max = (key size in bytes) - 2 * (hash length) - 2
 107                 // Test vector (EM) generated by CryptoAPI on Windows XP
 108                 [Test]
 109                 public void CapiExchangeMax ()
 110                 {
 111                         byte[] M = new byte [(key.KeySize >> 3) - 2 * 20 - 2];
 112                         byte[] EM = { 0x45, 0x31, 0xA7, 0x4A, 0xE5, 0x8B, 0xC7, 0x0C, 0x5C, 0x8B, 0xE6, 0xAB, 0xC5, 0x99, 0xF3, 0x31, 0xB9, 0x64, 0xFA, 0x19, 0x4A, 0x41, 0xF3, 0x49, 0x05, 0x0B, 0x28, 0xD5, 0x96, 0x43, 0x0E, 0xEB, 0x62, 0x0B, 0x22, 0xFE, 0x5F, 0x92, 0x4F, 0x60, 0xB9, 0xAE, 0x7F, 0xAA, 0xC8, 0x82, 0x66, 0xD7, 0x19, 0xCF, 0xC0, 0x69, 0x1C, 0xAA, 0x7E, 0x95, 0x5D, 0x70, 0x3D, 0x4A, 0x1D, 0x3B, 0x55, 0xBC, 0x7D, 0x36, 0xCF, 0x98, 0x09, 0xF8, 0x20, 0x92, 0x34, 0x79, 0x0B, 0x1A, 0x91, 0xE5, 0xFB, 0x94, 0xAD, 0x2A, 0x15, 0x6E, 0x3D, 0xF4, 0xA5, 0x6F, 0x6B, 0xAE, 0x77, 0x80, 0x3C, 0xF5, 0xCC, 0x84, 0x3A, 0xF9, 0xCE, 0x9F, 0x06, 0xF6, 0xCC, 0xA8, 0x75, 0xE1, 0x55, 0x56, 0xA5, 0x76, 0x50, 0x28, 0xA7, 0x3E, 0x91, 0x11, 0x5C, 0x82, 0x7C, 0x1A, 0x92, 0x02, 0x74, 0xCC, 0xA9, 0x6C, 0xFC, 0xA4 };
 113
 114                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
 115                         try {
 116                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
 117                                 AssertEquals ("RSAOAEPKeyExchangeFormatter 1", M, Mback);
 118                         }
 119                         catch (CryptographicException ce) {
 120                                 // not supported by every version of Windows - Minimum: Windows XP
 121                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 122                         }
 123                 }
 124
 125                 // TestExchangeMin (1)
 126                 // Test vector (EM) generated by Mono on Windows
 127                 [Test]
 128                 public void MonoExchangeMin()
 129                 {
 130                         byte[] M = { 0x01 };
 131                         byte[] EM = { 0x75, 0x06, 0x33, 0xB4, 0x47, 0xDB, 0x9C, 0x72, 0x1A, 0x09, 0x48, 0xEA, 0xF3, 0xED, 0xCF, 0xA7, 0x6D, 0x09, 0x8E, 0xF5, 0xC9, 0x70, 0x18, 0xF7, 0x22, 0xCC, 0xEC, 0xCB, 0xD3, 0x2B, 0xE7, 0xE3, 0x0A, 0x47, 0xF4, 0xE1, 0x66, 0x73, 0xEA, 0x7F, 0x5B, 0x27, 0x32, 0x62, 0x9D, 0x0C, 0x2F, 0x88, 0x2E, 0x3A, 0x37, 0x6C, 0x0C, 0x09, 0x1D, 0xF3, 0xE1, 0x80, 0x66, 0x26, 0x29, 0x97, 0x3D, 0xB7, 0xE6, 0x01, 0xD0, 0x88, 0x9C, 0x68, 0x3F, 0x62, 0x7C, 0x71, 0x36, 0xDA, 0xC3, 0xE2, 0x93, 0x20, 0x95, 0xF8, 0x15, 0x89, 0x73, 0x24, 0xDF, 0xFB, 0x72, 0xD9, 0x63, 0x19, 0x84, 0x41, 0x92, 0x3C, 0x71, 0x36, 0xB9, 0x09, 0x24, 0xD6, 0x8E, 0x2D, 0x5A, 0xF2, 0x4B, 0xF4, 0xCD, 0x58, 0xEB, 0x4E, 0xE4, 0x97, 0xB3, 0x09, 0xED, 0xCF, 0x6A, 0x6D, 0xBC, 0xE4, 0xD4, 0x8D, 0xEC, 0xA6, 0x35, 0x53 };
 132
 133                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
 134                         try {
 135                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
 136                                 AssertEquals ("RSAOAEPKeyExchangeDeformatter Min", M, Mback);
 137                         }
 138                         catch (CryptographicException ce) {
 139                                 // not supported by every version of Windows - Minimum: Windows XP
 140                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 141                         }
 142                 }
 143
 144                 // test with a message 128 bits (16 bytes) long
 145                 // Test vector (EM) generated by Mono on Windows
 146                 [Test]
 147                 public void MonoExchange128()
 148                 {
 149                         byte[] M = { 0xd4, 0x36, 0xe9, 0x95, 0x69, 0xfd, 0x32, 0xa7, 0xc8, 0xa0, 0x5b, 0xbc, 0x90, 0xd3, 0x2c, 0x49 };
 150                         byte[] EM = { 0x3A, 0x18, 0xE7, 0xF7, 0x45, 0x32, 0x5B, 0x60, 0x46, 0x2A, 0x20, 0x1A, 0x69, 0x98, 0x84, 0x68, 0x76, 0xC0, 0x01, 0x7D, 0x37, 0xE7, 0xEB, 0x72, 0x18, 0xD7, 0xF3, 0xE5, 0x1B, 0x2C, 0xB2, 0x47, 0x86, 0x9D, 0x90, 0xE8, 0x38, 0x43, 0x0C, 0x58, 0x59, 0xDB, 0x2A, 0x46, 0xBA, 0x15, 0xD9, 0x79, 0x77, 0xB5, 0x8B, 0xA7, 0x06, 0x15, 0xE1, 0xBF, 0xA2, 0xA7, 0x69, 0xC6, 0x6A, 0x6C, 0x4F, 0x87, 0xA3, 0xA1, 0xBC, 0x21, 0x46, 0x68, 0x61, 0xEC, 0x1E, 0xE1, 0x2B, 0xEF, 0xD7, 0xE0, 0x61, 0xAF, 0xF5, 0xDA, 0x27, 0xCB, 0xFC, 0x98, 0x0C, 0x12, 0x59, 0x45, 0x64, 0x75, 0x58, 0xB5, 0x5B, 0x7A, 0x9B, 0x76, 0x68, 0x14, 0x9F, 0xAB, 0x64, 0xC7, 0x4E, 0xB7, 0xFF, 0x7D, 0x3D, 0xA3, 0x11, 0x9E, 0xE8, 0x06, 0xAF, 0x5D, 0xA3, 0xEB, 0x8E, 0x1E, 0x38, 0x5D, 0x0D, 0xC3, 0x8C, 0xC3, 0xF0, 0x57 };
 151
 152                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
 153                         try {
 154                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
 155                                 AssertEquals ("RSAOAEPKeyExchangeFormatter 128", M, Mback);
 156                         }
 157                         catch (CryptographicException ce) {
 158                                 // not supported by every version of Windows - Minimum: Windows XP
 159                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 160                         }
 161                 }
 162
 163                 // test with a message 160 bits (20 bytes) long
 164                 // Test vector (EM) generated by Mono on Windows
 165                 [Test]
 166                 public void MonoExchange192()
 167                 {
 168                         byte[] M = { 0xd4, 0x36, 0xe9, 0x95, 0x69, 0xfd, 0x32, 0xa7, 0xc8, 0xa0, 0x5b, 0xbc, 0x90, 0xd3, 0x2c, 0x49, 0x00, 0x00, 0x00, 0x00 };
 169                         byte[] EM = { 0xAD, 0xFA, 0x95, 0x2E, 0xCE, 0x23, 0xBE, 0xA5, 0x77, 0x81, 0x34, 0x98, 0x64, 0x58, 0x02, 0xAB, 0x62, 0x28, 0x97, 0x84, 0x6D, 0xF3, 0xE1, 0x9D, 0xB2, 0x04, 0xA8, 0xB0, 0x1D, 0x48, 0xFC, 0x94, 0x1A, 0x3A, 0xB1, 0x72, 0x39, 0xE1, 0xFE, 0x25, 0xF6, 0x6E, 0x64, 0xA5, 0x84, 0xA3, 0x2F, 0x3D, 0x49, 0x4F, 0x7F, 0xD1, 0x45, 0x74, 0xFB, 0x42, 0x6F, 0x50, 0x5C, 0x19, 0x44, 0xB8, 0x0F, 0x3B, 0x31, 0x94, 0x8E, 0xC2, 0x44, 0x47, 0xA2, 0xE9, 0x6E, 0x7F, 0x58, 0x49, 0x38, 0xB9, 0x2C, 0xB8, 0x0E, 0xA9, 0x7A, 0x86, 0x2B, 0xDB, 0xED, 0x5A, 0x16, 0x48, 0x41, 0x84, 0x3B, 0xE3, 0xA8, 0x26, 0x01, 0xAE, 0x09, 0x41, 0xB3, 0x95, 0xC5, 0xA4, 0x5A, 0x82, 0xC3, 0x37, 0x57, 0xD9, 0x03, 0x53, 0x8D, 0x28, 0x24, 0xA4, 0x37, 0x2A, 0xA9, 0xC7, 0x66, 0xAD, 0xAC, 0x5F, 0x3A, 0xF0, 0xE5, 0x90 };
 170
 171                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
 172                         try {
 173                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
 174                                 AssertEquals ("RSAOAEPKeyExchangeFormatter 192", M, Mback);
 175                         }
 176                         catch (CryptographicException ce) {
 177                                 // not supported by every version of Windows - Minimum: Windows XP
 178                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 179                         }
 180                 }
 181
 182                 // Max = (key size in bytes) - 2 * (hash length) - 2
 183                 // Test vector (EM) generated by Mono on Windows
 184                 [Test]
 185                 public void MonoExchangeMax()
 186                 {
 187                         byte[] M = new byte [(key.KeySize >> 3) - 2 * 20 - 2];
 188                         byte[] EM = { 0x6C, 0x3E, 0x71, 0x14, 0xAD, 0xDE, 0x46, 0x26, 0x42, 0xA8, 0x84, 0x40, 0xCC, 0x06, 0x73, 0xCC, 0x88, 0x76, 0x40, 0x08, 0x93, 0xE5, 0x5F, 0xFF, 0x7D, 0x02, 0x88, 0xE9, 0x2D, 0xF6, 0x90, 0xA1, 0x8F, 0x64, 0x9A, 0x79, 0x67, 0x63, 0xA5, 0xBE, 0xCE, 0x7F, 0x48, 0x65, 0x8F, 0x53, 0x24, 0x70, 0x4F, 0x2A, 0x61, 0x7C, 0x95, 0xB6, 0xD0, 0x1D, 0x6F, 0x92, 0xA5, 0x2B, 0xB9, 0x13, 0x6B, 0xD2, 0xEB, 0x1D, 0x4F, 0x1E, 0x51, 0x6D, 0x65, 0xA6, 0x97, 0xE8, 0x60, 0x4B, 0x19, 0xE4, 0x23, 0xDC, 0x22, 0xED, 0x23, 0x02, 0x5E, 0x0C, 0x0B, 0x99, 0x5D, 0xBA, 0xFC, 0xBD, 0x75, 0x2F, 0x3E, 0xCD, 0x33, 0xBF, 0x08, 0xD5, 0x31, 0x68, 0x7C, 0x51, 0x2E, 0xBF, 0x8A, 0xBF, 0xA9, 0x8F, 0x0A, 0xDF, 0xB0, 0x91, 0xB1, 0x95, 0x03, 0x37, 0x3C, 0x77, 0x61, 0x75, 0x06, 0x61, 0xD8, 0x94, 0x04, 0x42 };
 189
 190                         AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
 191                         try {
 192                                 byte[] Mback = keyback.DecryptKeyExchange (EM);
 193                                 AssertEquals ("RSAOAEPKeyExchangeFormatter Max", M, Mback);
 194                         }
 195                         catch (CryptographicException ce) {
 196                                 // not supported by every version of Windows - Minimum: Windows XP
 197                                 Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
 198                         }
 199                 }
 200
 201                 // TestExchangeTooBig
 202                 [Test]
 203                 [ExpectedException (typeof (CryptographicException))]
 204                 public void ExchangeTooBig()
 205                 {
 206                         AsymmetricKeyExchangeDeformatter keyex = new RSAOAEPKeyExchangeDeformatter (key);
 207                         byte[] EM = new byte [(key.KeySize >> 3) + 1];
 208                         // invalid format
 209                         byte[] M = keyex.DecryptKeyExchange (EM);
 210                 }
 211
 212                 [Test]
 213                 public void Parameters ()
 214                 {
 215                         RSAOAEPKeyExchangeDeformatter keyex = new RSAOAEPKeyExchangeDeformatter (key);
 216                         keyex.Parameters = "Mono";
 217                         AssertNull ("Parameters", keyex.Parameters);
 218                 }
 219
 220                 [Test]
 221                 [ExpectedException (typeof (NullReferenceException))]
 222                 public void ExchangeNoKey ()
 223                 {
 224                         AsymmetricKeyExchangeDeformatter keyex = new RSAOAEPKeyExchangeDeformatter ();
 225                         byte[] M = keyex.DecryptKeyExchange (new byte [(key.KeySize >> 3) - 2 * 20 - 2]);
 226                 }
 227
 228                 [Test]
 229                 [ExpectedException (typeof (InvalidCastException))]
 230                 public void ExchangeDSAKey ()
 231                 {
 232                         DSA dsa = DSA.Create ();
 233                         AsymmetricKeyExchangeDeformatter keyex = new RSAOAEPKeyExchangeDeformatter (dsa);
 234                 }
 235         }
 236 }