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