2 // SHA256Test.cs - NUnit Test Cases for SHA256
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2002 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004, 2007-2008 Novell, Inc (http://www.novell.com)
11 using NUnit.Framework;
14 using System.Security.Cryptography;
17 namespace MonoTests.System.Security.Cryptography {
20 // a. FIPS PUB 180-2: Secure Hash Standard
21 // http://csrc.nist.gov/publications/fips/fips180-2/fip180-2.txt
23 // SHA256 is a abstract class - so most of the test included here wont be tested
24 // on the abstract class but should be tested in ALL its descendants.
27 public class SHA256Test : HashAlgorithmTest {
30 public override void SetUp ()
32 hash = SHA256.Create ();
35 // the hash algorithm only exists as a managed implementation
36 public override bool ManagedHashImplementation {
40 // test vectors from NIST FIPS 186-2
42 private string input1 = "abc";
43 private string input2 = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
45 public void FIPS186_Test1 (SHA256 hash)
47 string className = hash.ToString ();
48 byte[] result = { 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
49 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
50 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
51 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad };
52 byte[] input = Encoding.Default.GetBytes (input1);
54 string testName = className + " 1";
55 FIPS186_a (testName, hash, input, result);
56 FIPS186_b (testName, hash, input, result);
57 FIPS186_c (testName, hash, input, result);
58 FIPS186_d (testName, hash, input, result);
59 FIPS186_e (testName, hash, input, result);
62 public void FIPS186_Test2 (SHA256 hash)
64 string className = hash.ToString ();
65 byte[] result = { 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
66 0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
67 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
68 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1 };
69 byte[] input = Encoding.Default.GetBytes (input2);
71 string testName = className + " 2";
72 FIPS186_a (testName, hash, input, result);
73 FIPS186_b (testName, hash, input, result);
74 FIPS186_c (testName, hash, input, result);
75 FIPS186_d (testName, hash, input, result);
76 FIPS186_e (testName, hash, input, result);
79 public void FIPS186_Test3 (SHA256 hash)
81 string className = hash.ToString ();
82 byte[] result = { 0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92,
83 0x81, 0xa1, 0xc7, 0xe2, 0x84, 0xd7, 0x3e, 0x67,
84 0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97, 0x20, 0x0e,
85 0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0 };
86 byte[] input = new byte [1000000];
87 for (int i = 0; i < 1000000; i++)
90 string testName = className + " 3";
91 FIPS186_a (testName, hash, input, result);
92 FIPS186_b (testName, hash, input, result);
93 FIPS186_c (testName, hash, input, result);
94 FIPS186_d (testName, hash, input, result);
95 FIPS186_e (testName, hash, input, result);
98 public void FIPS186_a (string testName, SHA256 hash, byte[] input, byte[] result)
100 byte[] output = hash.ComputeHash (input);
101 Assert.AreEqual (result, output, testName + ".a.1");
102 Assert.AreEqual (result, hash.Hash, testName + ".a.2");
103 // required or next operation will still return old hash
107 public void FIPS186_b (string testName, SHA256 hash, byte[] input, byte[] result)
109 byte[] output = hash.ComputeHash (input, 0, input.Length);
110 Assert.AreEqual (result, output, testName + ".b.1");
111 Assert.AreEqual (result, hash.Hash, testName + ".b.2");
112 // required or next operation will still return old hash
116 public void FIPS186_c (string testName, SHA256 hash, byte[] input, byte[] result)
118 MemoryStream ms = new MemoryStream (input);
119 byte[] output = hash.ComputeHash (ms);
120 Assert.AreEqual (result, output, testName + ".c.1");
121 Assert.AreEqual (result, hash.Hash, testName + ".c.2");
122 // required or next operation will still return old hash
126 public void FIPS186_d (string testName, SHA256 hash, byte[] input, byte[] result)
128 byte[] output = hash.TransformFinalBlock (input, 0, input.Length);
129 // LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
130 // AssertEquals( testName + ".d.1", result, output );
131 Assert.IsNotNull (output, testName + ".d.1");
132 Assert.AreEqual (result, hash.Hash, testName + ".d.2");
133 // required or next operation will still return old hash
137 public void FIPS186_e (string testName, SHA256 hash, byte[] input, byte[] result)
139 byte[] copy = new byte [input.Length];
140 for (int i=0; i < input.Length - 1; i++)
141 hash.TransformBlock (input, i, 1, copy, i);
142 byte[] output = hash.TransformFinalBlock (input, input.Length - 1, 1);
143 // LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
144 // AssertEquals (testName + ".e.1", result, output);
145 Assert.IsNotNull (output, testName + ".e.1");
146 Assert.AreEqual (result, hash.Hash, testName + ".e.2");
147 // required or next operation will still return old hash
152 public override void Create ()
154 // Note: These tests will only be valid without a "machine.config" file
155 // or a "machine.config" file that do not modify the default algorithm
157 const string defaultSHA256 = "System.Security.Cryptography.SHA256Managed";
159 // try to build the default implementation
160 SHA256 hash = SHA256.Create ();
161 Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create()");
163 // try to build, in every way, a SHA256 implementation
164 hash = SHA256.Create ("SHA256");
165 Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create('SHA256')");
166 hash = SHA256.Create ("SHA-256");
167 Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create('SHA-256')");
171 [ExpectedException (typeof (InvalidCastException))]
172 public void CreateIncorrect ()
174 // try to build an incorrect hash algorithms
175 hash = SHA256.Create ("MD5");
179 public void CreateInvalid ()
181 // try to build invalid implementation
182 hash = SHA256.Create ("InvalidHash");
183 Assert.IsNull (hash, "SHA256.Create('InvalidHash')");
187 [ExpectedException (typeof (ArgumentNullException))]
188 public override void CreateNull ()
190 // try to build null implementation
191 hash = SHA256.Create (null);
194 // none of those values changes for any implementation of defaultSHA256
196 public virtual void StaticInfo ()
198 string className = hash.ToString ();
199 Assert.AreEqual (256, hash.HashSize, className + ".HashSize");
200 Assert.AreEqual (1, hash.InputBlockSize, className + ".InputBlockSize");
201 Assert.AreEqual (1, hash.OutputBlockSize, className + ".OutputBlockSize");