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

   1 //
   2 // DSASignatureDeformatterTest.cs - NUnit Test Cases for DSASignatureDeformatter
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2002 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 using NUnit.Framework;
  11 using System;
  12 using System.Security;
  13 using System.Security.Cryptography;
  14
  15 namespace MonoTests.System.Security.Cryptography {
  16
  17 public class DSASignatureDeformatterTest : TestCase {
  18         protected DSASignatureDeformatter def;
  19         protected static DSA dsa;
  20         protected static RSA rsa;
  21
  22         protected override void SetUp ()
  23         {
  24                 def = new DSASignatureDeformatter ();
  25                 // key generation is VERY long so one time is enough
  26                 if (dsa == null)
  27                         dsa = DSA.Create ();
  28                 if (rsa == null)
  29                         rsa = RSA.Create ();
  30         }
  31
  32         protected override void TearDown () {}
  33
  34         public void TestConstructors ()
  35         {
  36                 // empty constructor
  37                 DSASignatureDeformatter def = new DSASignatureDeformatter ();
  38                 AssertNotNull ("DSASignatureDeformatter()", def);
  39                 // AsymmetricAlgorithm constructor (with null)
  40                 def = new DSASignatureDeformatter (null);
  41                 AssertNotNull ("DSASignatureDeformatter(null)", def);
  42                 // AsymmetricAlgorithm constructor (with DSA)
  43                 def = new DSASignatureDeformatter (dsa);
  44                 AssertNotNull ("DSASignatureDeformatter(dsa)", def);
  45                 // AsymmetricAlgorithm constructor (with RSA)
  46                 try {
  47                         def = new DSASignatureDeformatter (rsa);
  48                         Fail ("Expected InvalidCastException but got none");
  49                 }
  50                 catch (InvalidCastException) {
  51                         // this is expected
  52                 }
  53                 catch (Exception e) {
  54                         Fail ("Expected InvalidCastException but got " + e.ToString ());
  55                 }
  56         }
  57
  58         // Method is documented as unused so...
  59         public void TestSetHash ()
  60         {
  61                 // null is ok
  62                 try {
  63                         def.SetHashAlgorithm (null);
  64                 }
  65                 catch (ArgumentNullException) {
  66                         // do nothing, this is what we expect
  67                 }
  68                 catch (Exception e) {
  69                         Fail ("Expected ArgumentNullException but got " + e.ToString ());
  70                 }
  71                 // SHA1
  72                 try {
  73                         def.SetHashAlgorithm ("SHA1");
  74                 }
  75                 catch (Exception e) {
  76                         Fail ("Unexpected exception: " + e.ToString ());
  77                 }
  78                 // MD5 (bad)
  79                 try {
  80                         def.SetHashAlgorithm ("MD5");
  81                 }
  82                 catch (CryptographicUnexpectedOperationException) {
  83                         // do nothing, this is what we expect
  84                 }
  85                 catch (Exception e) {
  86                         Fail ("Expected CryptographicUnexpectedOperationException but got " + e.ToString ());
  87                 }
  88         }
  89
  90         public void TestSetKey ()
  91         {
  92                 // here null is ok
  93                 try {
  94                         def.SetKey (null);
  95                 }
  96                 catch (Exception e) {
  97                         Fail ("Unexpected exception: " + e.ToString ());
  98                 }
  99                 // RSA (bad)
 100                 try {
 101                         def.SetKey (rsa);
 102                         Fail ("Expected InvalidCastException but got none");
 103                 }
 104                 catch (InvalidCastException) {
 105                         // do nothing, this is what we expect
 106                 }
 107                 catch (Exception e) {
 108                         Fail ("Expected InvalidCastException but got: " + e.ToString ());
 109                 }
 110                 // DSA
 111                 try {
 112                         def.SetKey (dsa);
 113                 }
 114                 catch (Exception e) {
 115                         Fail ("Unexpected exception: " + e.ToString ());
 116                 }
 117         }
 118
 119         public void TestVerify ()
 120         {
 121                 byte[] hash = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13 };
 122                 byte[] sign = { 0x50, 0xd2, 0xb0, 0x8b, 0xcd, 0x5e, 0xb2, 0xc2, 0x35, 0x82, 0xd3, 0x76, 0x07, 0x79, 0xbb, 0x55, 0x98, 0x72, 0x43, 0xe8,
 123                                       0x74, 0xc9, 0x35, 0xf8, 0xc9, 0xbd, 0x69, 0x2f, 0x08, 0x34, 0xfa, 0x5a, 0x59, 0x23, 0x2a, 0x85, 0x7b, 0xa3, 0xb3, 0x82 };
 124                 bool ok = false;
 125                 try {
 126                         ok = def.VerifySignature (hash, sign);
 127                 }
 128                 catch (CryptographicUnexpectedOperationException) {
 129                         // do nothing, this is what we expect
 130                 }
 131                 catch (Exception e) {
 132                         Fail ("Expected CryptographicUnexpectedOperationException but got " + e.ToString ());
 133                 }
 134
 135                 dsa.ImportParameters (AllTests.GetKey (false));
 136                 def.SetKey (dsa);
 137
 138                 // missing signature
 139                 try {
 140                         ok = def.VerifySignature (hash, null);
 141                         Fail ("Expected ArgumentNullException but got none");
 142                 }
 143                 catch (ArgumentNullException) {
 144                         // do nothing, this is what we expect
 145                 }
 146                 catch (Exception e) {
 147                         Fail ("Expected ArgumentNullException but got " + e.ToString ());
 148                 }
 149
 150                 // missing hash
 151                 try {
 152                         byte[] s = null; // overloaded method
 153                         ok = def.VerifySignature (s, sign);
 154                         Fail ("Expected ArgumentNullException but got none");
 155                 }
 156                 catch (ArgumentNullException) {
 157                         // do nothing, this is what we expect
 158                 }
 159                 catch (Exception e) {
 160                         Fail ("Expected ArgumentNullException but got " + e.ToString ());
 161                 }
 162
 163                 ok = def.VerifySignature (hash, sign);
 164                 Assert ("verified signature", ok);
 165
 166                 byte[] badSign = { 0x49, 0xd2, 0xb0, 0x8b, 0xcd, 0x5e, 0xb2, 0xc2, 0x35, 0x82, 0xd3, 0x76, 0x07, 0x79, 0xbb, 0x55, 0x98, 0x72, 0x43, 0xe8,
 167                                          0x74, 0xc9, 0x35, 0xf8, 0xc9, 0xbd, 0x69, 0x2f, 0x08, 0x34, 0xfa, 0x5a, 0x59, 0x23, 0x2a, 0x85, 0x7b, 0xa3, 0xb3, 0x82 };
 168                 ok = def.VerifySignature (hash, badSign);
 169                 Assert ("didn't verified bad signature", !ok);
 170         }
 171 }
 172
 173 }