206 lines
6.7 KiB
C#
206 lines
6.7 KiB
C#
//
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// SHA256Test.cs - NUnit Test Cases for SHA256
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//
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// Author:
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// Sebastien Pouliot <sebastien@ximian.com>
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//
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// (C) 2002 Motus Technologies Inc. (http://www.motus.com)
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// Copyright (C) 2004, 2007-2008 Novell, Inc (http://www.novell.com)
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//
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using NUnit.Framework;
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using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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namespace MonoTests.System.Security.Cryptography {
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// References:
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// a. FIPS PUB 180-2: Secure Hash Standard
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// http://csrc.nist.gov/publications/fips/fips180-2/fip180-2.txt
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// SHA256 is a abstract class - so most of the test included here wont be tested
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// on the abstract class but should be tested in ALL its descendants.
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[TestFixture]
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public class SHA256Test : HashAlgorithmTest {
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[SetUp]
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public override void SetUp ()
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{
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hash = SHA256.Create ();
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}
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// the hash algorithm only exists as a managed implementation
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public override bool ManagedHashImplementation {
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get { return true; }
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}
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// test vectors from NIST FIPS 186-2
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private string input1 = "abc";
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private string input2 = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
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public void FIPS186_Test1 (SHA256 hash)
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{
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string className = hash.ToString ();
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byte[] result = { 0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
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0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
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0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
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0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad };
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byte[] input = Encoding.Default.GetBytes (input1);
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string testName = className + " 1";
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FIPS186_a (testName, hash, input, result);
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FIPS186_b (testName, hash, input, result);
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FIPS186_c (testName, hash, input, result);
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FIPS186_d (testName, hash, input, result);
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FIPS186_e (testName, hash, input, result);
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}
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public void FIPS186_Test2 (SHA256 hash)
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{
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string className = hash.ToString ();
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byte[] result = { 0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
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0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
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0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
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0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1 };
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byte[] input = Encoding.Default.GetBytes (input2);
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string testName = className + " 2";
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FIPS186_a (testName, hash, input, result);
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FIPS186_b (testName, hash, input, result);
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FIPS186_c (testName, hash, input, result);
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FIPS186_d (testName, hash, input, result);
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FIPS186_e (testName, hash, input, result);
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}
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public void FIPS186_Test3 (SHA256 hash)
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{
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string className = hash.ToString ();
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byte[] result = { 0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92,
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0x81, 0xa1, 0xc7, 0xe2, 0x84, 0xd7, 0x3e, 0x67,
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0xf1, 0x80, 0x9a, 0x48, 0xa4, 0x97, 0x20, 0x0e,
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0x04, 0x6d, 0x39, 0xcc, 0xc7, 0x11, 0x2c, 0xd0 };
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byte[] input = new byte [1000000];
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for (int i = 0; i < 1000000; i++)
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input[i] = 0x61; // a
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string testName = className + " 3";
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FIPS186_a (testName, hash, input, result);
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FIPS186_b (testName, hash, input, result);
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FIPS186_c (testName, hash, input, result);
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FIPS186_d (testName, hash, input, result);
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FIPS186_e (testName, hash, input, result);
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}
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public void FIPS186_a (string testName, SHA256 hash, byte[] input, byte[] result)
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{
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byte[] output = hash.ComputeHash (input);
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Assert.AreEqual (result, output, testName + ".a.1");
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Assert.AreEqual (result, hash.Hash, testName + ".a.2");
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// required or next operation will still return old hash
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hash.Initialize ();
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}
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public void FIPS186_b (string testName, SHA256 hash, byte[] input, byte[] result)
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{
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byte[] output = hash.ComputeHash (input, 0, input.Length);
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Assert.AreEqual (result, output, testName + ".b.1");
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Assert.AreEqual (result, hash.Hash, testName + ".b.2");
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// required or next operation will still return old hash
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hash.Initialize ();
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}
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public void FIPS186_c (string testName, SHA256 hash, byte[] input, byte[] result)
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{
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MemoryStream ms = new MemoryStream (input);
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byte[] output = hash.ComputeHash (ms);
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Assert.AreEqual (result, output, testName + ".c.1");
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Assert.AreEqual (result, hash.Hash, testName + ".c.2");
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// required or next operation will still return old hash
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hash.Initialize ();
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}
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public void FIPS186_d (string testName, SHA256 hash, byte[] input, byte[] result)
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{
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byte[] output = hash.TransformFinalBlock (input, 0, input.Length);
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// LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
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// AssertEquals( testName + ".d.1", result, output );
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Assert.IsNotNull (output, testName + ".d.1");
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Assert.AreEqual (result, hash.Hash, testName + ".d.2");
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// required or next operation will still return old hash
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hash.Initialize ();
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}
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public void FIPS186_e (string testName, SHA256 hash, byte[] input, byte[] result)
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{
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byte[] copy = new byte [input.Length];
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for (int i=0; i < input.Length - 1; i++)
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hash.TransformBlock (input, i, 1, copy, i);
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byte[] output = hash.TransformFinalBlock (input, input.Length - 1, 1);
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// LAMESPEC or FIXME: TransformFinalBlock doesn't return HashValue !
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// AssertEquals (testName + ".e.1", result, output);
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Assert.IsNotNull (output, testName + ".e.1");
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Assert.AreEqual (result, hash.Hash, testName + ".e.2");
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// required or next operation will still return old hash
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hash.Initialize ();
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}
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[Test]
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public override void Create ()
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{
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// Note: These tests will only be valid without a "machine.config" file
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// or a "machine.config" file that do not modify the default algorithm
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// configuration.
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const string defaultSHA256 = "System.Security.Cryptography.SHA256Managed";
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// try to build the default implementation
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SHA256 hash = SHA256.Create ();
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Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create()");
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// try to build, in every way, a SHA256 implementation
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hash = SHA256.Create ("SHA256");
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Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create('SHA256')");
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hash = SHA256.Create ("SHA-256");
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Assert.AreEqual (hash.ToString (), defaultSHA256, "SHA256.Create('SHA-256')");
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}
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[Test]
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[ExpectedException (typeof (InvalidCastException))]
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public void CreateIncorrect ()
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{
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// try to build an incorrect hash algorithms
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hash = SHA256.Create ("MD5");
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}
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[Test]
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public void CreateInvalid ()
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{
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// try to build invalid implementation
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hash = SHA256.Create ("InvalidHash");
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Assert.IsNull (hash, "SHA256.Create('InvalidHash')");
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}
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[Test]
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[ExpectedException (typeof (ArgumentNullException))]
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public override void CreateNull ()
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{
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// try to build null implementation
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hash = SHA256.Create (null);
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}
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// none of those values changes for any implementation of defaultSHA256
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[Test]
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public virtual void StaticInfo ()
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{
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string className = hash.ToString ();
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Assert.AreEqual (256, hash.HashSize, className + ".HashSize");
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Assert.AreEqual (1, hash.InputBlockSize, className + ".InputBlockSize");
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Assert.AreEqual (1, hash.OutputBlockSize, className + ".OutputBlockSize");
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}
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}
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}
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