using Microsoft.VisualStudio.TestPlatform.UnitTestFramework; using ModernKeePassLib.Cryptography; using ModernKeePassLib.Cryptography.Hash; using ModernKeePassLib.Utility; namespace ModernKeePassLib.Test.Cryptography.Hash { [TestClass] public class HmacTests { [TestMethod] public void TestHmac1() { // Test vectors from RFC 4231 var pbKey = new byte[20]; for (var i = 0; i < pbKey.Length; ++i) pbKey[i] = 0x0B; var pbMsg = StrUtil.Utf8.GetBytes("Hi There"); var pbExpc = new byte[] { 0xB0, 0x34, 0x4C, 0x61, 0xD8, 0xDB, 0x38, 0x53, 0x5C, 0xA8, 0xAF, 0xCE, 0xAF, 0x0B, 0xF1, 0x2B, 0x88, 0x1D, 0xC2, 0x00, 0xC9, 0x83, 0x3D, 0xA7, 0x26, 0xE9, 0x37, 0x6C, 0x2E, 0x32, 0xCF, 0xF7 }; HmacEval(pbKey, pbMsg, pbExpc); } [TestMethod] public void TestHmac2() { var pbKey = new byte[131]; for (var i = 0; i < pbKey.Length; ++i) pbKey[i] = 0xAA; var pbMsg = StrUtil.Utf8.GetBytes( "This is a test using a larger than block-size key and " + "a larger than block-size data. The key needs to be " + "hashed before being used by the HMAC algorithm."); var pbExpc = new byte[] { 0x9B, 0x09, 0xFF, 0xA7, 0x1B, 0x94, 0x2F, 0xCB, 0x27, 0x63, 0x5F, 0xBC, 0xD5, 0xB0, 0xE9, 0x44, 0xBF, 0xDC, 0x63, 0x64, 0x4F, 0x07, 0x13, 0x93, 0x8A, 0x7F, 0x51, 0x53, 0x5C, 0x3A, 0x35, 0xE2 }; HmacEval(pbKey, pbMsg, pbExpc); } [TestMethod] public void TestHmacSha1ComputeHash() { var expectedHash = "AC2C2E614882CE7158F69B7E3B12114465945D01"; var message = StrUtil.Utf8.GetBytes("testing123"); var key = StrUtil.Utf8.GetBytes("hello"); using (var result = new HMACSHA1(key)) { Assert.AreEqual(ByteToString(result.ComputeHash(message)), expectedHash); } } [TestMethod] public void TestHmacSha256ComputeHash() { var expectedHash = "09C1BD2DE4E5659C0EFAF9E6AE4723E9CF96B69609B4E562F6AFF1745D7BF4E0"; var message = StrUtil.Utf8.GetBytes("testing123"); var key = StrUtil.Utf8.GetBytes("hello"); using (var result = new HMACSHA256(key)) { Assert.AreEqual(ByteToString(result.ComputeHash(message)), expectedHash); } } private static string ByteToString(byte[] buff) { string sbinary = ""; for (int i = 0; i < buff.Length; i++) { sbinary += buff[i].ToString("X2"); // hex format } return (sbinary); } [TestMethod] public void TestHmacOtp() { var pbSecret = StrUtil.Utf8.GetBytes("12345678901234567890"); var vExp = new []{ "755224", "287082", "359152", "969429", "338314", "254676", "287922", "162583", "399871", "520489" }; for (var i = 0; i < vExp.Length; ++i) { Assert.AreEqual(HmacOtp.Generate(pbSecret, (ulong)i, 6, false, -1), vExp[i]); } } private static void HmacEval(byte[] pbKey, byte[] pbMsg, byte[] pbExpc) { using (var h = new HMACSHA256(pbKey)) { h.TransformBlock(pbMsg, 0, pbMsg.Length, pbMsg, 0); h.TransformFinalBlock(MemUtil.EmptyByteArray, 0, 0); byte[] pbHash = h.Hash; Assert.IsTrue(MemUtil.ArraysEqual(pbHash, pbExpc)); // Reuse the object h.Initialize(); h.TransformBlock(pbMsg, 0, pbMsg.Length, pbMsg, 0); h.TransformFinalBlock(MemUtil.EmptyByteArray, 0, 0); pbHash = h.Hash; Assert.IsTrue(MemUtil.ArraysEqual(pbHash, pbExpc)); } } } }