DSInternals/Src/DSInternals.Common.Test/Cryptography/LMHashTester.cs

using DSInternals.Common;
using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Security;

namespace DSInternals.Common.Cryptography.Test
{
    [TestClass]
    public class LMHashTester
    {
        [TestMethod]
        public void LMHash_EmptyInput()
        {
            SecureString password = string.Empty.ToSecureString();
            string result = LMHash.ComputeHash(password).ToHex(true);
            string expected = "AAD3B435B51404EEAAD3B435B51404EE";
            Assert.AreEqual(expected, result);
        }
        [TestMethod]
        [ExpectedException(typeof(ArgumentNullException))]
        public void LMHash_NullInput()
        {
            LMHash.ComputeHash(null);
        }
        [TestMethod]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void LMHash_LongInput()
        {
            // LM Hash history contains aad3b435b51404eeaad3b435b51404ee, hash of empty string
            SecureString password = "17CharsLongString".ToSecureString();
            string result = LMHash.ComputeHash(password).ToHex(true);
        }
        [TestMethod]
        public void LMHash_UnicodeInput()
        {
            // Taken from AD, so the correctness of the expected result is guaranteed
            SecureString password = "♠".ToSecureString();
            string result = LMHash.ComputeHash(password).ToHex(false);
            string expected = "5a5503d0e85f58abaad3b435b51404ee";
            Assert.AreEqual(expected, result);
        }

        [TestMethod]
        public void LMHash_InputWithDiacriticalMarks()
        {
            // Taken from AD, so the correctness of the expected result is guaranteed
            SecureString password = "Č".ToSecureString();
            string result = LMHash.ComputeHash(password).ToHex(false);
            string expected = "f9393d97e7a1873caad3b435b51404ee";
            Assert.AreEqual(expected, result);
        }

        [TestMethod]
        public void LMHash_TestVector1()
        {
            SecureString password = "Pa$$w0rd".ToSecureString();
            string result = LMHash.ComputeHash(password).ToHex(true);
            string expected = "727E3576618FA1754A3B108F3FA6CB6D";
            Assert.AreEqual(expected, result);
        }
    }
}