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 // (C) 2004 Novell 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 protected override void SetUp ()
32 hash = SHA256.Create ();
35 // test vectors from NIST FIPS 186-2
37 private string input1 = "abc";
38 private string input2 = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
40 public void FIPS186_Test1 (SHA256 hash)
42 string className = hash.ToString ();
43 byte[] result = { 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
44 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
45 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
46 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad };
47 byte[] input = Encoding.Default.GetBytes (input1);
49 string testName = className + " 1";
50 FIPS186_a (testName, hash, input, result);
51 FIPS186_b (testName, hash, input, result);
52 FIPS186_c (testName, hash, input, result);
53 FIPS186_d (testName, hash, input, result);
54 FIPS186_e (testName, hash, input, result);
57 public void FIPS186_Test2 (SHA256 hash)
59 string className = hash.ToString ();
60 byte[] result = { 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
61 0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
62 0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
63 0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1 };
64 byte[] input = Encoding.Default.GetBytes (input2);
66 string testName = className + " 2";
67 FIPS186_a (testName, hash, input, result);
68 FIPS186_b (testName, hash, input, result);
69 FIPS186_c (testName, hash, input, result);
70 FIPS186_d (testName, hash, input, result);
71 FIPS186_e (testName, hash, input, result);
74 public void FIPS186_Test3 (SHA256 hash)
76 string className = hash.ToString ();
77 byte[] result = { 0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92,
78 0x81, 0xa1, 0xc7, 0xe2, 0x84, 0xd7, 0x3e, 0x67,
79 0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97, 0x20, 0x0e,
80 0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0 };
81 byte[] input = new byte [1000000];
82 for (int i = 0; i < 1000000; i++)
85 string testName = className + " 3";
86 FIPS186_a (testName, hash, input, result);
87 FIPS186_b (testName, hash, input, result);
88 FIPS186_c (testName, hash, input, result);
89 FIPS186_d (testName, hash, input, result);
90 FIPS186_e (testName, hash, input, result);
93 public void FIPS186_a (string testName, SHA256 hash, byte[] input, byte[] result)
95 byte[] output = hash.ComputeHash (input);
96 AssertEquals (testName + ".a.1", result, output);
97 AssertEquals (testName + ".a.2", result, hash.Hash);
98 // required or next operation will still return old hash
102 public void FIPS186_b (string testName, SHA256 hash, byte[] input, byte[] result)
104 byte[] output = hash.ComputeHash (input, 0, input.Length);
105 AssertEquals (testName + ".b.1", result, output);
106 AssertEquals (testName + ".b.2", result, hash.Hash);
107 // required or next operation will still return old hash
111 public void FIPS186_c (string testName, SHA256 hash, byte[] input, byte[] result)
113 MemoryStream ms = new MemoryStream (input);
114 byte[] output = hash.ComputeHash (ms);
115 AssertEquals (testName + ".c.1", result, output);
116 AssertEquals (testName + ".c.2", result, hash.Hash);
117 // required or next operation will still return old hash
121 public void FIPS186_d (string testName, SHA256 hash, byte[] input, byte[] result)
123 byte[] output = hash.TransformFinalBlock (input, 0, input.Length);
124 // LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
125 // AssertEquals( testName + ".d.1", result, output );
126 AssertEquals (testName + ".d", result, hash.Hash);
127 // required or next operation will still return old hash
131 public void FIPS186_e (string testName, SHA256 hash, byte[] input, byte[] result)
133 byte[] copy = new byte [input.Length];
134 for (int i=0; i < input.Length - 1; i++)
135 hash.TransformBlock (input, i, 1, copy, i);
136 byte[] output = hash.TransformFinalBlock (input, input.Length - 1, 1);
137 // LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
138 // AssertEquals (testName + ".e.1", result, output);
139 AssertEquals (testName + ".e", result, hash.Hash);
140 // required or next operation will still return old hash
145 public override void Create ()
147 // Note: These tests will only be valid without a "machine.config" file
148 // or a "machine.config" file that do not modify the default algorithm
150 const string defaultSHA256 = "System.Security.Cryptography.SHA256Managed";
152 // try to build the default implementation
153 SHA256 hash = SHA256.Create ();
154 AssertEquals ("SHA256.Create()", hash.ToString (), defaultSHA256);
156 // try to build, in every way, a SHA256 implementation
157 hash = SHA256.Create ("SHA256");
158 AssertEquals ("SHA256.Create('SHA256')", hash.ToString (), defaultSHA256);
159 hash = SHA256.Create ("SHA-256");
160 AssertEquals ("SHA256.Create('SHA-256')", hash.ToString (), defaultSHA256);
164 [ExpectedException (typeof (InvalidCastException))]
165 public void CreateIncorrect ()
167 // try to build an incorrect hash algorithms
168 hash = SHA256.Create ("MD5");
172 public void CreateInvalid ()
174 // try to build invalid implementation
175 hash = SHA256.Create ("InvalidHash");
176 AssertNull ("SHA256.Create('InvalidHash')", hash);
180 [ExpectedException (typeof (ArgumentNullException))]
181 public override void CreateNull ()
183 // try to build null implementation
184 hash = SHA256.Create (null);
187 // none of those values changes for any implementation of defaultSHA256
189 public virtual void StaticInfo ()
191 string className = hash.ToString ();
192 AssertEquals (className + ".HashSize", 256, hash.HashSize);
193 AssertEquals (className + ".InputBlockSize", 1, hash.InputBlockSize);
194 AssertEquals (className + ".OutputBlockSize", 1, hash.OutputBlockSize);