1 // 2 // TripleDESTest.cs - NUnit Test Cases for TripleDES 3 // 4 // Author: 5 // Sebastien Pouliot (sebastien@ximian.com) 6 // 7 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com) 8 // 9 // Permission is hereby granted, free of charge, to any person obtaining 10 // a copy of this software and associated documentation files (the 11 // "Software"), to deal in the Software without restriction, including 12 // without limitation the rights to use, copy, modify, merge, publish, 13 // distribute, sublicense, and/or sell copies of the Software, and to 14 // permit persons to whom the Software is furnished to do so, subject to 15 // the following conditions: 16 // 17 // The above copyright notice and this permission notice shall be 18 // included in all copies or substantial portions of the Software. 19 // 20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 // 28 29 using NUnit.Framework; 30 using System; 31 using System.Security.Cryptography; 32 33 namespace MonoTests.System.Security.Cryptography { 34 35 [TestFixture] 36 public class TripleDESTest { 37 38 [Test] DefaultProperties()39 public void DefaultProperties () 40 { 41 TripleDES algo = TripleDES.Create (); 42 Assert.AreEqual (64, algo.BlockSize, "BlockSize"); 43 Assert.AreEqual (8, algo.FeedbackSize, "FeedbackSize"); 44 Assert.AreEqual (192, algo.KeySize, "KeySize"); 45 Assert.AreEqual (CipherMode.CBC, algo.Mode, "Mode"); 46 Assert.AreEqual (PaddingMode.PKCS7, algo.Padding, "Padding"); 47 Assert.AreEqual (1, algo.LegalBlockSizes.Length, "LegalBlockSizes"); 48 Assert.AreEqual (64, algo.LegalBlockSizes [0].MaxSize, "LegalBlockSizes.MaxSize"); 49 Assert.AreEqual (64, algo.LegalBlockSizes [0].MinSize, "LegalBlockSizes.MinSize"); 50 Assert.AreEqual (0, algo.LegalBlockSizes [0].SkipSize, "LegalBlockSizes.SkipSize"); 51 Assert.AreEqual (1, algo.LegalKeySizes.Length, "LegalKeySizes"); 52 Assert.AreEqual (192, algo.LegalKeySizes [0].MaxSize, "LegalKeySizes.MaxSize"); 53 Assert.AreEqual (128, algo.LegalKeySizes [0].MinSize, "LegalKeySizes.MinSize"); 54 Assert.AreEqual (64, algo.LegalKeySizes [0].SkipSize, "LegalKeySizes.SkipSize"); 55 } 56 57 [Test] Key()58 public void Key () 59 { 60 TripleDES algo = TripleDES.Create (); 61 algo.GenerateKey (); 62 algo.GenerateIV (); 63 Assert.AreEqual (192, algo.KeySize, "Key Size"); 64 Assert.AreEqual (24, algo.Key.Length, "Key Length"); 65 Assert.AreEqual (8, algo.IV.Length, "IV Length"); 66 } 67 68 [Test] 69 [ExpectedException (typeof (ArgumentNullException))] KeyNull()70 public void KeyNull () 71 { 72 TripleDES algo = TripleDES.Create (); 73 algo.Key = null; 74 } 75 76 [Test] 77 [ExpectedException (typeof (CryptographicException))] KeyWeak128bits()78 public void KeyWeak128bits () 79 { 80 byte[] wk128 = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }; 81 TripleDES algo = TripleDES.Create (); 82 algo.Key = wk128; 83 } 84 85 [Test] 86 [ExpectedException (typeof (CryptographicException))] KeyWeak192bits_AB()87 public void KeyWeak192bits_AB () 88 { 89 byte[] wk192 = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD }; 90 TripleDES algo = TripleDES.Create (); 91 algo.Key = wk192; 92 } 93 94 [Test] 95 [ExpectedException (typeof (CryptographicException))] KeyWeak192bits_BC()96 public void KeyWeak192bits_BC () 97 { 98 byte[] wk192 = { 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }; 99 TripleDES algo = TripleDES.Create (); 100 algo.Key = wk192; 101 } 102 103 [Test] 104 [ExpectedException (typeof (CryptographicException))] KeyWrongLength()105 public void KeyWrongLength () 106 { 107 byte[] wk64 = { 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD, 0xCD }; 108 TripleDES algo = TripleDES.Create (); 109 algo.Key = wk64; 110 } 111 112 [Test] UseOneDesWeakKeyIn128bitsKey()113 public void UseOneDesWeakKeyIn128bitsKey () 114 { 115 // the first 8 bytes are a DES weak key 116 byte[] wk128 = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }; 117 TripleDES algo = TripleDES.Create (); 118 algo.Key = wk128; 119 } 120 121 [Test] UseOneDesWeakKeyIn192bitsKey()122 public void UseOneDesWeakKeyIn192bitsKey () 123 { 124 // the bytes 8-16 are a DES weak key 125 byte[] wk192 = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }; 126 TripleDES algo = TripleDES.Create (); 127 algo.Key = wk192; 128 } 129 130 [Test] 131 [ExpectedException (typeof (CryptographicException))] IsSemiWeakKey_Null()132 public void IsSemiWeakKey_Null () 133 { 134 TripleDES.IsWeakKey (null); 135 } 136 } 137 } 138