Adjust project descriptions (#12)

* Adjust package description

.github/workflows/cd.yaml

@@ -21,6 +21,7 @@ jobs:
       Test_Project_Path: SystemExtensions.Tests\SystemExtensions.NetStandard.Tests.csproj
       DI_Test_Project_Path: SystemExtensions.DependencyInjection.Tests\SystemExtensions.NetStandard.DependencyInjection.Tests.csproj
       Source_Project_Path: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
+      Core_Project_Path: SystemExtensions.NetCore\SystemExtensions.NetCore.csproj
       Actions_Allow_Unsecure_Commands: true
 
     steps:
@@ -32,7 +33,7 @@ jobs:
     - name: Install .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '5.0.202'
+        dotnet-version: '6.0.x'
 
     - name: Setup MSBuild.exe
       uses: microsoft/setup-msbuild@v1.0.1
@@ -45,17 +46,35 @@ jobs:
     - name: Build SystemExtensions.NetStandard project
       run: dotnet build SystemExtensions.NetStandard -c $env:Configuration
 
+    - name: Build SystemExtensions.NetCore project
+      run: dotnet build SystemExtensions.NetCore -c $env:Configuration
+
     - name: Build SystemExtensions.NetStandard.DependencyInjection project
       run: dotnet build SystemExtensions.NetStandard.DependencyInjection -c $env:Configuration
 
+    - name: Build SystemExtensions.NetStandard.Security project
+      run: dotnet build SystemExtensions.NetStandard.Security -c $env:Configuration
+
     - name: Push SystemExtensions.NetStandard nuget package
       uses: brandedoutcast/publish-nuget@v2.5.5
       with:
          PROJECT_FILE_PATH: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
          NUGET_KEY: ${{secrets.NUGET_API_KEY}}
 
+    - name: Push SystemExtensions.NetCore nuget package
+      uses: brandedoutcast/publish-nuget@v2.5.5
+      with:
+         PROJECT_FILE_PATH: SystemExtensions.NetCore\SystemExtensions.NetCore.csproj
+         NUGET_KEY: ${{secrets.NUGET_API_KEY}}
+
     - name: Push SystemExtensions.NetStandard.DependencyInjection nuget package
       uses: brandedoutcast/publish-nuget@v2.5.5
       with:
          PROJECT_FILE_PATH: SystemExtensions.NetStandard.DependencyInjection\SystemExtensions.NetStandard.DependencyInjection.csproj
+         NUGET_KEY: ${{secrets.NUGET_API_KEY}}
+
+    - name: Push SystemExtensions.NetStandard.Security nuget package
+      uses: brandedoutcast/publish-nuget@v2.5.5
+      with:
+         PROJECT_FILE_PATH: SystemExtensions.NetStandard.Security\SystemExtensions.NetStandard.Security.csproj
          NUGET_KEY: ${{secrets.NUGET_API_KEY}}

.github/workflows/ci.yaml

@@ -22,6 +22,7 @@ jobs:
       Solution_Path: SystemExtensions.sln
       Test_Project_Path: SystemExtensions.Tests\SystemExtensions.NetStandard.Tests.csproj
       DI_Test_Project_Path: SystemExtensions.DependencyInjection.Tests\SystemExtensions.NetStandard.DependencyInjection.Tests.csproj
+      Sec_Test_Project_Path: SystemExtensions.NetStandard.Security.Tests\SystemExtensions.NetStandard.Security.Tests.csproj
       Source_Project_Path: SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj
       Actions_Allow_Unsecure_Commands: true
 
@@ -34,7 +35,7 @@ jobs:
     - name: Install .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '5.0.202'
+        dotnet-version: '6.0.x'
 
     - name: Setup MSBuild.exe
       uses: microsoft/setup-msbuild@v1.0.1
@@ -45,6 +46,9 @@ jobs:
     - name: Execute DI Unit Tests
       run: dotnet test $env:DI_Test_Project_Path
 
+    - name: Execute Security Unit Tests
+      run: dotnet test $env:Sec_Test_Project_Path
+
     - name: Restore Project
       run: msbuild $env:Solution_Path /t:Restore /p:Configuration=$env:Configuration /p:RuntimeIdentifier=$env:RuntimeIdentifier
       env:

SystemExtensions.DependencyInjection.Tests/Configuration/UpdateableOptionsWrapperTests.cs

@@ -3,6 +3,7 @@ using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Moq;
 using System;
 using System.Configuration;
+using System.Extensions.Configuration;
 
 namespace SystemExtensions.DependencyInjection.Tests.Configuration
 {

SystemExtensions.DependencyInjection.Tests/Logging/LoggerResolverTests.cs

@@ -4,7 +4,6 @@ using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Moq;
 using System;
 using System.Logging;
-using System.Windows.Extensions.Logging;
 
 namespace SystemExtensions.DependencyInjection.Tests.Logging
 {

SystemExtensions.DependencyInjection.Tests/SystemExtensions.NetStandard.DependencyInjection.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>

SystemExtensions.NetCore/Extensions/ObjectExtensions.cs

@@ -0,0 +1,22 @@
+using System.Runtime.CompilerServices;
+
+namespace System.Core.Extensions;
+
+public static class ObjectExtensions
+{
+    public static T ThrowIfNull<T>([ValidatedNotNull] this T obj, [CallerArgumentExpression("obj")] string? paramName = null)
+        where T : class
+    {
+        if (obj is null)
+        {
+            throw new ArgumentNullException(paramName);
+        }
+
+        return obj;
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    sealed class ValidatedNotNullAttribute : Attribute
+    {
+    }
+}

SystemExtensions.NetCore/SystemExtensions.NetCore.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+	<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <Nullable>enable</Nullable>
+    <RootNamespace>System</RootNamespace>
+	<PackageLicenseFile>LICENSE</PackageLicenseFile>
+	<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+	<Version>1.0.1</Version>
+	<Authors>Alexandru Macocian</Authors>
+	<RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+	<Description>Extensions for the System namespace</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+	<None Include="../LICENSE">
+		<Pack>True</Pack>
+		<PackagePath></PackagePath>
+	</None>
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.DependencyInjection/Configuration/UpdateableOptionsResolver.cs

@@ -1,4 +1,5 @@
 using Slim.Resolvers;
+using System.Extensions.Configuration;
 
 namespace System.Configuration
 {

SystemExtensions.NetStandard.DependencyInjection/Configuration/UpdateableOptionsWrapper.cs

@@ -1,6 +1,6 @@
-using System.Extensions;
+using System.Configuration;
 
-namespace System.Configuration
+namespace System.Extensions.Configuration
 {
     public sealed class UpdateableOptionsWrapper<T> : IUpdateableOptions<T>
         where T : class

SystemExtensions.NetStandard.DependencyInjection/Extensions/ServiceManagerExtensions.cs

@@ -104,6 +104,23 @@ namespace System.Extensions
             return serviceManager;
         }
 
+        /// <summary>
+        /// Register a <see cref="ILoggerFactory"/> with a <see cref="CVLoggerProvider"/>.
+        /// </summary>
+        /// <param name="serviceManager"></param>
+        /// <returns></returns>
+        public static IServiceManager RegisterCVLoggerFactory(this IServiceManager serviceManager)
+        {
+            serviceManager.RegisterScoped<ILoggerFactory, LoggerFactory>(sp =>
+            {
+                LoggerFactory loggerFactory = new();
+                loggerFactory.AddProvider(new CVLoggerProvider(sp.GetService<ILogsWriter>()));
+                return loggerFactory;
+            });
+
+            return serviceManager;
+        }
+
         public static IServiceManager RegisterLoggerFactory(this IServiceManager serviceManager, Func<Slim.IServiceProvider, ILoggerFactory> loggerFactory)
         {
             serviceManager.ThrowIfNull(nameof(serviceManager));

SystemExtensions.NetStandard.DependencyInjection/Logging/CVLoggerProvider.cs

@@ -7,7 +7,7 @@ namespace System.Logging
     public sealed class CVLoggerProvider : ICVLoggerProvider
     {
         private readonly ILogsWriter logsManager;
-        private CorrelationVector correlationVector;
+        private readonly CorrelationVector correlationVector;
 
         public CVLoggerProvider(ILogsWriter logsWriter)
         {
@@ -28,11 +28,6 @@ namespace System.Logging
 
         public ILogger CreateLogger(string categoryName)
         {
-            if (this.correlationVector is not null)
-            {
-                this.correlationVector = CorrelationVector.Extend(this.correlationVector.ToString());
-            }
-
             return new CVLogger(categoryName, this);
         }
 

SystemExtensions.NetStandard.DependencyInjection/Logging/LoggerResolver.cs

@@ -2,7 +2,7 @@
 using Slim.Resolvers;
 using System.Linq;
 
-namespace System.Windows.Extensions.Logging
+namespace System.Logging
 {
     public sealed class LoggerResolver : IDependencyResolver
     {
@@ -25,7 +25,7 @@ namespace System.Windows.Extensions.Logging
             }
             else if (type == typeof(ILogger))
             {
-                return ResolveLogger(serviceProvider, type);
+                return ResolveLogger(serviceProvider);
             }
             else
             {
@@ -41,7 +41,7 @@ namespace System.Windows.Extensions.Logging
             return createLoggerMethod.MakeGenericMethod(categoryTypes.First()).Invoke(null, new object[] { loggerFactory });
         }
 
-        private static object ResolveLogger(Slim.IServiceProvider serviceProvider, Type type)
+        private static object ResolveLogger(Slim.IServiceProvider serviceProvider)
         {
             var loggerFactory = serviceProvider.GetService<ILoggerFactory>();
             return loggerFactory.CreateLogger(string.Empty);

SystemExtensions.NetStandard.DependencyInjection/SystemExtensions.NetStandard.DependencyInjection.csproj

@@ -6,9 +6,10 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <LangVersion>latest</LangVersion>
-    <Version>1.1.0</Version>
+    <Version>1.1.7</Version>
     <Authors>Alexandru Macocian</Authors>
     <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+    <Description>Extensions for the Slim Dependency Injection engine</Description>
   </PropertyGroup>
 
   <ItemGroup>
@@ -20,9 +21,9 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CorrelationVector" Version="1.0.42" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
-    <PackageReference Include="Slim" Version="1.5.1" />
-    <PackageReference Include="SystemExtensions.NetStandard" Version="1.3.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="6.0.0" />
+    <PackageReference Include="Slim" Version="1.6.0" />
+    <PackageReference Include="SystemExtensions.NetStandard" Version="1.3.1" />
   </ItemGroup>
 
 </Project>

SystemExtensions.NetStandard.Security.Tests/AesEncrypterTests.cs

@@ -0,0 +1,105 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Security.Encryption;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests
+{
+    [TestClass]
+    public class AesEncrypterTests
+    {
+        private ISymmetricEncrypter symmetricEncrypter;
+        private string keyString;
+        private byte[] keyBytes;
+        private byte[] ivBytes;
+        private string ivString;
+        private string toEncryptString;
+        private byte[] toEncryptBytes;
+
+        [TestInitialize]
+        public void TestInitialize()
+        {
+            this.symmetricEncrypter = new AesEncrypter();
+            this.keyBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2 };
+            this.keyString = Convert.ToBase64String(this.keyBytes);
+            this.ivBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6 };
+            this.ivString = Convert.ToBase64String(this.ivBytes);
+            this.toEncryptBytes = Encoding.UTF8.GetBytes("toEncrypt");
+            this.toEncryptString = Convert.ToBase64String(this.toEncryptBytes);
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptStringWithStringKeyStringIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, this.toEncryptString).ConfigureAwait(false);
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+            this.toEncryptString.Should().Be(decrypted);
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptStringWithByteKeyByteIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, this.toEncryptString).ConfigureAwait(false);
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+            this.toEncryptString.Should().Be(decrypted);
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptByteWithStringKeyStringIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, this.toEncryptBytes).ConfigureAwait(false);
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+            this.toEncryptBytes.Should().BeEquivalentTo(decrypted);
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptByteWithByteKeyByteIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, this.toEncryptBytes).ConfigureAwait(false);
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+            this.toEncryptBytes.Should().BeEquivalentTo(decrypted);
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptStreamWithStringKeyStringIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyString, this.ivString, new MemoryStream(this.toEncryptBytes)).ConfigureAwait(false);
+            encrypted.Position = 0;
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyString, this.ivString, encrypted).ConfigureAwait(false);
+
+            this.toEncryptBytes.Should().BeEquivalentTo(((MemoryStream)decrypted).ToArray());
+        }
+
+        [TestMethod]
+        public async Task EncryptDecryptStreamWithByteKeyByteIv()
+        {
+            var encrypted = await this.symmetricEncrypter.Encrypt(this.keyBytes, this.ivBytes, new MemoryStream(this.toEncryptBytes)).ConfigureAwait(false);
+            encrypted.Position = 0;
+            var decrypted = await this.symmetricEncrypter.Decrypt(this.keyBytes, this.ivBytes, encrypted).ConfigureAwait(false);
+
+            this.toEncryptBytes.Should().BeEquivalentTo(((MemoryStream)decrypted).ToArray());
+        }
+
+        [TestMethod]
+        public void GetEncryptionStreamReturnsCryptoStream()
+        {
+            var encryptionStream = this.symmetricEncrypter.GetEncryptionStream(this.keyBytes, this.ivBytes, new MemoryStream());
+            encryptionStream.Should().BeAssignableTo<CryptoStream>();
+        }
+
+        [TestMethod]
+        public void GetDecryptionStreamReturnsCryptoStream()
+        {
+            var encryptionStream = this.symmetricEncrypter.GetDecryptionStream(this.keyBytes, this.ivBytes, new MemoryStream());
+            encryptionStream.Should().BeAssignableTo<CryptoStream>();
+        }
+    }
+}

SystemExtensions.NetStandard.Security.Tests/CryptoRngProviderTests.cs

@@ -0,0 +1,55 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Linq;
+using System.Security.Rng;
+
+namespace SystemExtensions.NetStandard.Security.Tests
+{
+    [TestClass]
+    public class CryptoRngProviderTests
+    {
+        private CryptoRngProvider cryptoRngProvider;
+
+        [TestInitialize]
+        public void TestInitialize()
+        {
+            this.cryptoRngProvider = new CryptoRngProvider();
+        }
+
+        [TestMethod]
+        public void GetBytes_ShouldSetValues()
+        {
+            var bytes = new byte[100];
+
+            this.cryptoRngProvider.GetBytes(bytes);
+
+            bytes.All(b => b == 0).Should().BeFalse();
+        }
+
+        [TestMethod]
+        public void GetNonZeroBytes_ShouldSetNonZeroValues()
+        {
+            var bytes = new byte[100];
+
+            this.cryptoRngProvider.GetNonZeroBytes(bytes);
+
+            bytes.All(b => b != 0).Should().BeTrue();
+        }
+
+        [TestMethod]
+        public void GetBytes_ShouldReturnBytes()
+        {
+            var bytes = this.cryptoRngProvider.GetBytes(10);
+
+            bytes.Length.Should().Be(10);
+        }
+
+        [TestMethod]
+        public void GetNonZeroBytes_ShouldReturnBytes()
+        {
+            var bytes = this.cryptoRngProvider.GetNonZeroBytes(10);
+
+            bytes.Length.Should().Be(10);
+        }
+    }
+}

SystemExtensions.NetStandard.Security.Tests/Rfc2898DeriveBytesPasswordHashingServiceTests.cs

@@ -0,0 +1,261 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Security.Hashing;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests
+{
+    [TestClass]
+    public sealed class Rfc2898DeriveBytesPasswordHashingServiceTests
+    {
+        private const int TooShortHashLength = 31;
+        private const int DesiredHashLength = 32;
+        private const int Iterations = 10000;
+        private const int TooLittleIterations = 1000;
+
+        private readonly Rfc2898DeriveBytesPasswordHashingService rfc2898DeriveBytesPasswordHashingService = new();
+
+        private byte[] tooShortSaltBytes;
+        private string tooShortSaltString;
+        private byte[] incorrectSaltBytes;
+        private string incorrectSaltString;
+        private byte[] saltBytes;
+        private string saltString;
+        private byte[] passwordBytes;
+        private string passwordString;
+        private byte[] incorrectPasswordBytes;
+        private string incorrectPasswordString;
+
+        [TestInitialize]
+        public void TestInitialize()
+        {
+            this.tooShortSaltBytes = new byte[16];
+            this.tooShortSaltString = Convert.ToBase64String(this.tooShortSaltBytes);
+            this.saltBytes = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
+            this.incorrectSaltBytes = new byte[32];
+            this.incorrectSaltString = Convert.ToBase64String(this.incorrectSaltBytes);
+            this.saltString = Convert.ToBase64String(this.saltBytes);
+            this.passwordBytes = new byte[] { 5, 1, 2, 34, 35, 123, 4, 23, 1, 235, 32, 234 };
+            this.passwordString = Convert.ToBase64String(this.passwordBytes);
+            this.incorrectPasswordBytes = new byte[] { 14, 123, 23, 4, 2, 1, 23, 25 };
+            this.incorrectPasswordString = Convert.ToBase64String(this.incorrectPasswordBytes);
+        }
+
+        [TestMethod]
+        public void PasswordNull_HashBytes_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(null, this.saltBytes, DesiredHashLength, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void PasswordNull_HashString_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(null, this.saltString, DesiredHashLength, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void SaltNull_HashBytes_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, null, DesiredHashLength, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void SaltNull_HashString_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, null, DesiredHashLength, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void HashLengthTooSmall_HashBytes_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, TooShortHashLength, Iterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void HashLengthTooSmall_HashString_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, TooShortHashLength, Iterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void TooLittleIterations_HashBytes_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void TooLittleIterations_HashString_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void TooShortSalt_HashBytes_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<byte[]>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.tooShortSaltBytes, DesiredHashLength, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void TooShortSalt_HashString_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<string>>(() => this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.tooShortSaltString, DesiredHashLength, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void PasswordNull_VerifyBytes_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(null, this.incorrectPasswordBytes, this.saltBytes, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void PasswordNull_VerifyString_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(null, this.incorrectPasswordString, this.saltString, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void HashNull_VerifyBytes_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, null, this.saltBytes, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void HashNull_VerifyString_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, null, this.saltString, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void SaltNull_VerifyBytes_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, this.incorrectPasswordBytes, null, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void SaltNull_VerifyString_Throws_ArgumentNullException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, this.incorrectPasswordString, null, Iterations));
+
+            action.Should().Throw<ArgumentNullException>();
+        }
+        [TestMethod]
+        public void TooLittleIterations_VerifyBytes_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordBytes, this.incorrectPasswordBytes, this.saltBytes, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public void TooLittleIterations_VerifyString_Throws_InvalidOperationException()
+        {
+            var action = new Func<Task<bool>>(() => this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(this.passwordString, this.incorrectPasswordString, this.saltString, TooLittleIterations));
+
+            action.Should().Throw<InvalidOperationException>();
+        }
+        [TestMethod]
+        public async Task HashBytes_ReturnsHashedBytes()
+        {
+            var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+            hashedBytes.Should().NotBeNull();
+            hashedBytes.Should().HaveCount(DesiredHashLength);
+        }
+        [TestMethod]
+        public async Task HashString_ReturnsHashedString()
+        {
+            var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+            hashedString.Should().NotBeNull();
+            var hashedBytes = Convert.FromBase64String(hashedString);
+            hashedBytes.Should().HaveCount(DesiredHashLength);
+        }
+        [TestMethod]
+        public async Task VerifyBytes_CorrectPassword_ReturnsTrue()
+        {
+            var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.saltBytes, Iterations);
+
+            result.Should().BeTrue();
+        }
+        [TestMethod]
+        public async Task VerifyString_CorrectPassword_ReturnsTrue()
+        {
+            var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.saltString, Iterations);
+
+            result.Should().BeTrue();
+        }
+        [TestMethod]
+        public async Task VerifyBytes_IncorrectPassword_ReturnsFalse()
+        {
+            var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.incorrectPasswordBytes, this.saltBytes, Iterations);
+
+            result.Should().BeFalse();
+        }
+        [TestMethod]
+        public async Task VerifyString_IncorrectPassword_ReturnsFalse()
+        {
+            var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.incorrectPasswordString, this.saltString, Iterations);
+
+            result.Should().BeFalse();
+        }
+        [TestMethod]
+        public async Task VerifyBytes_IncorrectSalt_ReturnsFalse()
+        {
+            var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.incorrectSaltBytes, Iterations);
+
+            result.Should().BeFalse();
+        }
+        [TestMethod]
+        public async Task VerifyString_IncorrectSalt_ReturnsFalse()
+        {
+            var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.incorrectSaltString, Iterations);
+
+            result.Should().BeFalse();
+        }
+        [TestMethod]
+        public async Task VerifyBytes_IncorrectIterations_ReturnsFalse()
+        {
+            var hashedBytes = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordBytes, this.saltBytes, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedBytes, this.passwordBytes, this.saltBytes, Iterations + 1);
+
+            result.Should().BeFalse();
+        }
+        [TestMethod]
+        public async Task VerifyString_IncorrectIterations_ReturnsFalse()
+        {
+            var hashedString = await this.rfc2898DeriveBytesPasswordHashingService.Hash(this.passwordString, this.saltString, DesiredHashLength, Iterations);
+
+            var result = await this.rfc2898DeriveBytesPasswordHashingService.VerifyPassword(hashedString, this.passwordString, this.saltString, Iterations + 1);
+
+            result.Should().BeFalse();
+        }
+    }
+}

SystemExtensions.NetStandard.Security.Tests/SecureStringTests.cs

@@ -0,0 +1,122 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Security.Encryption;
+
+namespace SystemExtensions.NetStandard.Security.Tests
+{
+    [TestClass]
+    public class SecureStringTests
+    {
+        [TestMethod]
+        public void SecureString_NewSecureString_ReturnsValue()
+        {
+            var str = new SecureString("hello");
+
+            str.Value.Should().Be("hello");
+        }
+
+        [TestMethod]
+        public void SecureStringEmpty_AreEqual()
+        {
+            var str = SecureString.Empty;
+            str.Should().Be(SecureString.Empty);
+        }
+
+        [TestMethod]
+        public void SecureStringEmpty_Equals_StringEmpty()
+        {
+            var ss = SecureString.Empty;
+            var s = string.Empty;
+
+            ss.Should().Be(s);
+        }
+
+        [TestMethod]
+        public void SecureString_Equals_OtherSecureString()
+        {
+            var ss1 = new SecureString("Hello");
+            var ss2 = new SecureString("Hello");
+
+            ss1.Equals(ss2).Should().BeTrue();
+        }
+
+        [TestMethod]
+        [DataRow("hello", "hello", true)]
+        [DataRow("hello", "henlo", false)]
+        public void SecureString_EqualOperator_OtherSecureString(string str1, string str2, bool isEqual)
+        {
+            var ss1 = new SecureString(str1);
+            var ss2 = new SecureString(str2);
+
+            (ss1 == ss2).Should().Be(isEqual);
+        }
+
+        [TestMethod]
+        [DataRow("hello", "hello", false)]
+        [DataRow("hello", "henlo", true)]
+        public void SecureString_DifferentOperator_OtherSecureString(string str1, string str2, bool isDifferent)
+        {
+            var ss1 = new SecureString(str1);
+            var ss2 = new SecureString(str2);
+
+            (ss1 != ss2).Should().Be(isDifferent);
+        }
+
+        [TestMethod]
+        [DataRow("hello", "hello", true)]
+        [DataRow("hello", "henlo", false)]
+        public void SecureString_EqualOperator_String(string str1, string str2, bool isEqual)
+        {
+            var ss1 = new SecureString(str1);
+
+            (ss1 == str2).Should().Be(isEqual);
+        }
+
+        [TestMethod]
+        [DataRow("hello", "hello", false)]
+        [DataRow("hello", "henlo", true)]
+        public void SecureString_DifferentOperator_String(string str1, string str2, bool isDifferent)
+        {
+            var ss1 = new SecureString(str1);
+
+            (ss1 != str2).Should().Be(isDifferent);
+        }
+
+        [TestMethod]
+        public void SecureString_PlusOperator_SecureString()
+        {
+            var ss1 = new SecureString("Hello ");
+            var ss2 = new SecureString("World");
+
+            (ss1 + ss2).Should().Be("Hello World");
+        }
+
+        [TestMethod]
+        public void SecureString_PlusOperator_String()
+        {
+            var ss1 = new SecureString("Hello ");
+            var ss2 = "World";
+
+            (ss1 + ss2).Should().Be("Hello World");
+        }
+
+        [TestMethod]
+        public void SecureString_PlusOperator_Char()
+        {
+            var ss1 = new SecureString("Hello ");
+            var c = 'W';
+
+            (ss1 + c).Should().Be("Hello W");
+        }
+
+        [TestMethod]
+        public void SecureString_WithOptionalEntropy_Matches()
+        {
+            SecureString.AddOptionalEntropy(new byte[] { 10, 20, 25, 34, 56, 12, 10, 81, 200, 155, 123, 144, 123, 192, 122, 1 });
+            var ss1 = new SecureString("Hello");
+            var ss2 = new SecureString("Hello");
+
+            ss1.Should().Be(ss2);
+        }
+    }
+}

SystemExtensions.NetStandard.Security.Tests/Sha256HashingServiceTests.cs

@@ -0,0 +1,48 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.IO;
+using System.Security.Hashing;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SystemExtensions.NetStandard.Security.Tests
+{
+    [TestClass]
+    public sealed class Sha256HashingServiceTests
+    {
+        private readonly IHashingService hashingService = new Sha256HashingService();
+        private string toHashtString;
+        private byte[] toHashtBytes;
+        private Stream toHashStream;
+
+        [TestInitialize]
+        public void TestInitialize()
+        {
+            this.toHashtBytes = Encoding.UTF8.GetBytes("toEncrypt");
+            this.toHashtString = Convert.ToBase64String(this.toHashtBytes);
+            this.toHashStream = new MemoryStream(this.toHashtBytes);
+        }
+
+        [TestMethod]
+        public async Task HashString()
+        {
+            var hash = await this.hashingService.Hash(this.toHashtString).ConfigureAwait(false);
+            hash.Should().BeOfType<string>();
+        }
+
+        [TestMethod]
+        public async Task HashBytes()
+        {
+            var hash = await this.hashingService.Hash(this.toHashtBytes).ConfigureAwait(false);
+            hash.Should().BeOfType<byte[]>();
+        }
+
+        [TestMethod]
+        public async Task HashStream()
+        {
+            var hash = await this.hashingService.Hash(this.toHashStream).ConfigureAwait(false);
+            hash.Should().BeAssignableTo<Stream>();
+        }
+    }
+}

SystemExtensions.NetStandard.Security.Tests/SystemExtensions.NetStandard.Security.Tests.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="5.10.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.3" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.3" />
+    <PackageReference Include="coverlet.collector" Version="3.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SystemExtensions.NetStandard.Security\SystemExtensions.NetStandard.Security.csproj" />
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.Security/Encryption/AesEncrypter.cs

@@ -0,0 +1,214 @@
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+using System.Security.Utilities;
+
+namespace System.Security.Encryption
+{
+    public sealed class AesEncrypter : ISymmetricEncrypter
+    {
+        public async Task<string> Decrypt(string key, string iv, string value)
+        {
+            using var valueStream = BytesToStream(StringToBytes(value));
+            using var decryptedStream = await DecryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+            return StreamToString(decryptedStream);
+        }
+
+        public async Task<string> Decrypt(byte[] key, byte[] iv, string value)
+        {
+            using var valueStream = BytesToStream(StringToBytes(value));
+            using var decryptedStream = await DecryptInternal(key, iv, valueStream).ConfigureAwait(false);
+            return StreamToString(decryptedStream);
+        }
+
+        public async Task<byte[]> Decrypt(string key, string iv, byte[] value)
+        {
+            using var valueStream = BytesToStream(value);
+            using var decryptedStream = await DecryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+            return StreamToBytes(decryptedStream);
+        }
+
+        public async Task<byte[]> Decrypt(byte[] key, byte[] iv, byte[] value)
+        {
+            using var valueStream = BytesToStream(value);
+            using var decryptedStream = await DecryptInternal(key, iv, valueStream).ConfigureAwait(false);
+            return StreamToBytes(decryptedStream);
+        }
+
+        public async Task<Stream> Decrypt(string key, string iv, Stream value)
+        {
+            return await DecryptInternal(StringToBytes(key), StringToBytes(iv), value).ConfigureAwait(false);
+        }
+
+        public async Task<Stream> Decrypt(byte[] key, byte[] iv, Stream value)
+        {
+            return await DecryptInternal(key, iv, value).ConfigureAwait(false);
+        }
+
+        public async Task<string> Encrypt(string key, string iv, string value)
+        {
+            using var valueStream = BytesToStream(StringToBytes(value));
+            using var encryptedStream = await EncryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+            return StreamToString(encryptedStream);
+        }
+
+        public async Task<string> Encrypt(byte[] key, byte[] iv, string value)
+        {
+            using var valueStream = BytesToStream(StringToBytes(value));
+            using var encryptedStream = await EncryptInternal(key, iv, valueStream).ConfigureAwait(false);
+            return StreamToString(encryptedStream);
+        }
+
+        public async Task<byte[]> Encrypt(string key, string iv, byte[] value)
+        {
+            using var valueStream = BytesToStream(value);
+            using var encryptedStream = await EncryptInternal(StringToBytes(key), StringToBytes(iv), valueStream).ConfigureAwait(false);
+            return StreamToBytes(encryptedStream);
+        }
+
+        public async Task<byte[]> Encrypt(byte[] key, byte[] iv, byte[] value)
+        {
+            using var valueStream = BytesToStream(value);
+            using var encryptedStream = await EncryptInternal(key, iv, valueStream).ConfigureAwait(false);
+            return StreamToBytes(encryptedStream);
+        }
+
+        public async Task<Stream> Encrypt(string key, string iv, Stream value)
+        {
+            return value is null
+                ? throw new ArgumentNullException(nameof(value))
+                : await EncryptInternal(StringToBytes(key), StringToBytes(iv), value).ConfigureAwait(false);
+        }
+
+        public async Task<Stream> Encrypt(byte[] key, byte[] iv, Stream value)
+        {
+            return value is null
+                ? throw new ArgumentNullException(nameof(value))
+                : await EncryptInternal(key, iv, value).ConfigureAwait(false);
+        }
+
+        public Stream GetEncryptionStream(string key, string iv, Stream outStream)
+        {
+            return GetEncryptionStreamInternal(StringToBytes(key), StringToBytes(iv), outStream);
+        }
+
+        public Stream GetEncryptionStream(byte[] key, byte[] iv, Stream outStream)
+        {
+            return GetEncryptionStreamInternal(key, iv, outStream);
+        }
+
+        public Stream GetDecryptionStream(string key, string iv, Stream inStream)
+        {
+            return GetDecryptionStreamInternal(StringToBytes(key), StringToBytes(iv), inStream);
+        }
+
+        public Stream GetDecryptionStream(byte[] key, byte[] iv, Stream inStream)
+        {
+            return GetDecryptionStreamInternal(key, iv, inStream);
+        }
+
+        private static byte[] StreamToBytes(Stream value)
+        {
+            value.Position = 0;
+            var buffer = new byte[1024];
+            using var ms = new MemoryStream();
+            var read = -1;
+            do
+            {
+                read = value.Read(buffer, 0, buffer.Length);
+                ms.Write(buffer, 0, read);
+            } while (read > 0);
+            return ms.ToArray();
+        }
+
+        private static string StreamToString(Stream value)
+        {
+            return Convert.ToBase64String(StreamToBytes(value));
+        }
+
+        private static byte[] StringToBytes(string value)
+        {
+            return Convert.FromBase64String(value);
+        }
+
+        private static Stream BytesToStream(byte[] value)
+        {
+            return new MemoryStream(value);
+        }
+
+        private static async Task<Stream> EncryptInternal(byte[] key, byte[] iv, Stream toEncryptStream)
+        {
+            if (key.Length < 32)
+            {
+                throw new ArgumentException($"{nameof(key)} must be at least 32 bytes");
+            }
+
+            if (iv.Length < 16)
+            {
+                throw new ArgumentException($"{nameof(iv)} must be at least 16 bytes");
+            }
+
+            key = key.Take(32).ToArray();
+            iv = iv.Take(16).ToArray();
+
+
+            var encryptedMemoryStream = new MemoryStream();
+            using var cryptoStream = GetEncryptionStreamInternal(key, iv, encryptedMemoryStream);
+            await toEncryptStream.CopyToAsync(cryptoStream).ConfigureAwait(false);
+            if (!cryptoStream.HasFlushedFinalBlock)
+            {
+                cryptoStream.FlushFinalBlock();
+            }
+
+            encryptedMemoryStream.Position = 0;
+            return encryptedMemoryStream;
+        }
+
+        private static async Task<Stream> DecryptInternal(byte[] key, byte[] iv, Stream toDecryptStream)
+        {
+            if (key.Length < 32)
+            {
+                throw new ArgumentException($"{nameof(key)} must be at least 32 bytes");
+            }
+
+            if (iv.Length < 16)
+            {
+                throw new ArgumentException($"{nameof(iv)} must be at least 16 bytes");
+            }
+
+            key = key.Take(32).ToArray();
+            iv = iv.Take(16).ToArray();
+
+
+            var decryptedMemoryStream = new MemoryStream();
+            using var cryptoStream = GetDecryptionStreamInternal(key, iv, toDecryptStream);
+            await cryptoStream.CopyToAsync(decryptedMemoryStream).ConfigureAwait(false);
+            if (!cryptoStream.HasFlushedFinalBlock)
+            {
+                cryptoStream.FlushFinalBlock();
+            }
+
+            decryptedMemoryStream.Position = 0;
+            return decryptedMemoryStream;
+        }
+
+        private static CryptoStream GetEncryptionStreamInternal(byte[] key, byte[] iv, Stream encryptedStream)
+        {
+            using var aes = Aes.Create();
+            aes.Padding = PaddingMode.PKCS7;
+            var crypto = aes.CreateEncryptor(key, iv);
+            var cryptoStream = new NotClosingCryptoStream(encryptedStream, crypto, CryptoStreamMode.Write);
+            return cryptoStream;
+        }
+
+        private static CryptoStream GetDecryptionStreamInternal(byte[] key, byte[] iv, Stream encryptedStream)
+        {
+            using var aes = Aes.Create();
+            aes.Padding = PaddingMode.PKCS7;
+            var crypto = aes.CreateDecryptor(key, iv);
+            var cryptoStream = new NotClosingCryptoStream(encryptedStream, crypto, CryptoStreamMode.Read);
+            return cryptoStream;
+        }
+    }
+}

SystemExtensions.NetStandard.Security/Encryption/ISymmetricEncrypter.cs

@@ -0,0 +1,25 @@
+using System.IO;
+using System.Threading.Tasks;
+
+namespace System.Security.Encryption
+{
+    public interface ISymmetricEncrypter
+    {
+        Stream GetEncryptionStream(string key, string iv, Stream outStream);
+        Stream GetEncryptionStream(byte[] key, byte[] iv, Stream outStream);
+        Stream GetDecryptionStream(string key, string iv, Stream inStream);
+        Stream GetDecryptionStream(byte[] key, byte[] iv, Stream inStream);
+        Task<string> Encrypt(string key, string iv, string value);
+        Task<string> Encrypt(byte[] key, byte[] iv, string value);
+        Task<byte[]> Encrypt(string key, string iv, byte[] value);
+        Task<byte[]> Encrypt(byte[] key, byte[] iv, byte[] value);
+        Task<Stream> Encrypt(string key, string iv, Stream value);
+        Task<Stream> Encrypt(byte[] key, byte[] iv, Stream value);
+        Task<string> Decrypt(string key, string iv, string value);
+        Task<string> Decrypt(byte[] key, byte[] iv, string value);
+        Task<byte[]> Decrypt(string key, string iv, byte[] value);
+        Task<byte[]> Decrypt(byte[] key, byte[] iv, byte[] value);
+        Task<Stream> Decrypt(string key, string iv, Stream value);
+        Task<Stream> Decrypt(byte[] key, byte[] iv, Stream value);
+    }
+}

SystemExtensions.NetStandard.Security/Encryption/SecureString.cs

@@ -0,0 +1,102 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace System.Security.Encryption
+{
+    public sealed class SecureString
+    {
+        private static byte[] optionalEntropy;
+        private byte[] encryptedValue;
+
+        public string Value {
+            get => this.encryptedValue is not null ? Encoding.UTF8.GetString(ProtectedData.Unprotect(this.encryptedValue, optionalEntropy, DataProtectionScope.CurrentUser)) : null;
+            private set => this.encryptedValue = ProtectedData.Protect(Encoding.UTF8.GetBytes(value), optionalEntropy, DataProtectionScope.CurrentUser);
+        }
+
+        public SecureString(string value)
+        {
+            this.Value = value;
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (obj is string)
+            {
+                return this == (obj as string);
+            }
+            else if (obj is SecureString)
+            {
+                return this == (obj as SecureString);
+            }
+            else
+            {
+                return base.Equals(obj);
+            }
+        }
+        public override int GetHashCode()
+        {
+            return this.Value.GetHashCode();
+        }
+        public override string ToString()
+        {
+            return this.Value;
+        }
+
+        public static readonly SecureString Empty = new(string.Empty);
+        public static implicit operator string(SecureString ss) => ss is null ? string.Empty : ss.Value;
+        public static implicit operator SecureString(string s) => new(s);
+        public static SecureString operator +(SecureString ss1, SecureString ss2)
+        {
+            if (ss1 is null)
+            {
+                throw new ArgumentNullException(nameof(ss1));
+            }
+
+            if (ss2 is null)
+            {
+                throw new ArgumentNullException(nameof(ss2));
+            }
+
+            return new SecureString(ss1.Value + ss2.Value);
+        }
+        public static SecureString operator +(SecureString ss1, string s2)
+        {
+            if (ss1 is null)
+            {
+                throw new ArgumentNullException(nameof(ss1));
+            }
+
+            return new SecureString(ss1.Value + s2);
+        }
+        public static SecureString operator +(SecureString ss1, char c)
+        {
+            if (ss1 is null)
+            {
+                throw new ArgumentNullException(nameof(ss1));
+            }
+
+            return new SecureString(ss1.Value + c);
+        }
+        public static bool operator ==(SecureString ss1, SecureString ss2)
+        {
+            return ss1?.Value == ss2?.Value;
+        }
+        public static bool operator !=(SecureString ss1, SecureString ss2)
+        {
+            return !(ss1 == ss2);
+        }
+        public static bool operator ==(SecureString ss1, string s2)
+        {
+            return ss1?.Value == s2;
+        }
+        public static bool operator !=(SecureString ss1, string s2)
+        {
+            return !(ss1?.Value == s2);
+        }
+
+        public static void AddOptionalEntropy(byte[] entropy)
+        {
+            optionalEntropy = entropy;
+        }
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/IHashingService.cs

@@ -0,0 +1,12 @@
+using System.IO;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing
+{
+    public interface IHashingService
+    {
+        Task<string> Hash(string raw);
+        Task<byte[]> Hash(byte[] raw);
+        Task<Stream> Hash(Stream raw);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/IPasswordHashingService.cs

@@ -0,0 +1,47 @@
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing
+{
+    public interface IPasswordHashingService
+    {
+        /// <summary>
+        /// Hash provided raw password and return the hashed value.
+        /// </summary>
+        /// <param name="raw">Base64 encoded password.</param>
+        /// <param name="salt">Base64 encoded salt to be used for hashing.</param>
+        /// <param name="length">Length of the resulting hash.</param>
+        /// <param name="iterations">Number of hashing iterations to be performed.</param>
+        /// <remarks>
+        /// The length of the hash will vary due to the base64 encoding of the resulting hash.
+        /// </remarks>
+        /// <returns>Base64 encoded hashed password.</returns>
+        Task<string> Hash(string raw, string salt, int length, int iterations);
+        /// <summary>
+        /// Hash provided raw password and return the hashed value.
+        /// </summary>
+        /// <param name="raw">Password to be hashed.</param>
+        /// <param name="salt">Salt to be used for hashing.</param>
+        /// <param name="length">Length of the resulting hash.</param>
+        /// <param name="iterations">Number of hashing iterations to be performed.</param>
+        /// <returns>Hashed password.</returns>
+        Task<byte[]> Hash(byte[] raw, byte[] salt, int length, int iterations);
+        /// <summary>
+        /// Verify provided password against a hashed password.
+        /// </summary>
+        /// <param name="hash">Base64 encoding of the previously hashed password.</param>
+        /// <param name="password">Base64 encoding of the password to be verified.</param>
+        /// <param name="salt">Salt used to hash the previous password.</param>
+        /// <param name="iterations">Number of iterations used to hash the previous password.</param>
+        /// <returns>Returns true if password matches the previously hashed password. Otherwise returns false.</returns>
+        Task<bool> VerifyPassword(string hash, string password, string salt, int iterations);
+        /// <summary>
+        /// Verify provided password against a hashed password.
+        /// </summary>
+        /// <param name="hash">Previously hashed password.</param>
+        /// <param name="password">Password to be verified.</param>
+        /// <param name="salt">Salt used to hash the previous password.</param>
+        /// <param name="iterations">Number of iterations used to hash the previous password.</param>
+        /// <returns>Returns true if password matches the previously hashed password. Otherwise returns false.</returns>
+        Task<bool> VerifyPassword(byte[] hash, byte[] password, byte[] salt, int iterations);
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/Rfc2898DeriveBytesPasswordHashingService.cs

@@ -0,0 +1,101 @@
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing
+{
+    public sealed class Rfc2898DeriveBytesPasswordHashingService : IPasswordHashingService
+    {
+        private const int MinimumIterations = 10000;
+        private const int MinimumHashLength = 32;
+
+        public Rfc2898DeriveBytesPasswordHashingService()
+        {
+        }
+
+        public async Task<string> Hash(string raw, string salt, int length, int iterations)
+        {
+            this.ValidateHashArguments(raw, salt, length, iterations);
+
+            var rawBytes = Convert.FromBase64String(raw);
+            var saltBytes = Convert.FromBase64String(salt);
+            var hashBytes = await this.HashInternal(rawBytes, saltBytes, length, iterations);
+            return Convert.ToBase64String(hashBytes);
+        }
+        public Task<byte[]> Hash(byte[] raw, byte[] salt, int length, int iterations)
+        {
+            this.ValidateHashArguments(raw, salt, length, iterations);
+
+            return this.HashInternal(raw, salt, length, iterations);
+        }
+        public Task<bool> VerifyPassword(string hash, string password, string salt, int iterations)
+        {
+            this.ValidateVerifyArguments(hash, password, salt, iterations);
+            var hashBytes = Convert.FromBase64String(hash);
+            var saltBytes = Convert.FromBase64String(salt);
+            var passwordBytes = Convert.FromBase64String(password);
+            return this.VerifyPasswordInternal(hashBytes, passwordBytes, saltBytes, iterations);
+        }
+        public Task<bool> VerifyPassword(byte[] hash, byte[] password, byte[] salt, int iterations)
+        {
+            this.ValidateVerifyArguments(hash, password, salt, iterations);
+            return this.VerifyPasswordInternal(hash, password, salt, iterations);
+        }
+
+        private void ValidateHashArguments(object raw, object salt, int length, int iterations)
+        {
+            _ = raw ?? throw new ArgumentNullException(nameof(raw));
+            _ = salt ?? throw new ArgumentNullException(nameof(salt));
+
+            if (iterations < MinimumIterations)
+            {
+                throw new InvalidOperationException($"Unable to perform secure hash. Iteration count must be over {MinimumIterations}");
+            }
+
+            if (length < MinimumHashLength)
+            {
+                throw new InvalidOperationException($"Unable to perform secure hash. Hash length must be over {MinimumHashLength}");
+            }
+        }
+        private void ValidateVerifyArguments(object hash, object password, object salt, int iterations)
+        {
+            _ = hash ?? throw new ArgumentNullException(nameof(hash));
+            _ = salt ?? throw new ArgumentNullException(nameof(salt));
+            _ = password ?? throw new ArgumentNullException(nameof(password));
+
+            if (iterations < MinimumIterations)
+            {
+                throw new InvalidOperationException($"Unable to verify hash. Iteration count must be over {MinimumIterations}");
+            }
+        }
+        private Task<byte[]> HashInternal(byte[] raw, byte[] salt, int length, int iterations)
+        {
+            using var pbkdf2 = new Rfc2898DeriveBytes(raw, salt, iterations);
+            var hash = pbkdf2.GetBytes(length);
+            return Task.FromResult(hash);
+        }
+        private Task<bool> VerifyPasswordInternal(byte[] hash, byte[] password, byte[] salt, int iterations)
+        {
+            using var pbkdf2 = new Rfc2898DeriveBytes(password, salt, iterations);
+            var hashToVerify = pbkdf2.GetBytes(hash.Length);
+            var lengthToVerify = Math.Max(hash.Length, hashToVerify.Length);
+            var match = true;
+            if (lengthToVerify <= 0)
+            {
+                return Task.FromResult(false);
+            }
+
+            for(var i = 0; i < lengthToVerify; i++)
+            {
+                if (i < hash.Length && i < hashToVerify.Length)
+                {
+                    if (hashToVerify[i].Equals(hash[i]) is false)
+                    {
+                        match = false;
+                    }
+                }
+            }
+
+            return Task.FromResult(match && hash.Length.Equals(hashToVerify.Length));
+        }
+    }
+}

SystemExtensions.NetStandard.Security/Hashing/Sha256HashingService.cs

@@ -0,0 +1,62 @@
+using System.IO;
+using System.Security.Cryptography;
+using System.Threading.Tasks;
+
+namespace System.Security.Hashing
+{
+    public sealed class Sha256HashingService : IHashingService
+    {
+        public async Task<string> Hash(string raw)
+        {
+            using var rawStream = BytesToStream(StringToBytes(raw));
+            using var hashedStream = await HashInternal(rawStream).ConfigureAwait(false);
+            return StreamToString(hashedStream);
+        }
+        public async Task<byte[]> Hash(byte[] raw)
+        {
+            using var rawStream = BytesToStream(raw);
+            using var hashedStream = await HashInternal(rawStream).ConfigureAwait(false);
+            return StreamToBytes(hashedStream);
+        }
+        public async Task<Stream> Hash(Stream raw)
+        {
+            return await HashInternal(raw);
+        }
+
+        private static byte[] StreamToBytes(Stream value)
+        {
+            value.Position = 0;
+            var buffer = new byte[1024];
+            using var ms = new MemoryStream();
+            var read = -1;
+            do
+            {
+                read = value.Read(buffer, 0, buffer.Length);
+                ms.Write(buffer, 0, read);
+            } while (read > 0);
+            return ms.ToArray();
+        }
+        private static string StreamToString(Stream value)
+        {
+            return Convert.ToBase64String(StreamToBytes(value));
+        }
+        private static byte[] StringToBytes(string value)
+        {
+            return Convert.FromBase64String(value);
+        }
+        private static Stream BytesToStream(byte[] value)
+        {
+            return new MemoryStream(value);
+        }
+        private static async Task<Stream> HashInternal(Stream raw)
+        {
+            if (raw is null)
+            {
+                throw new ArgumentNullException(nameof(raw));
+            }
+
+            using var sha256 = SHA256.Create();
+            return await Task.Run(() => new MemoryStream(sha256.ComputeHash(raw)));
+        }
+    }
+}

SystemExtensions.NetStandard.Security/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Macocian Alexandru Victor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

SystemExtensions.NetStandard.Security/Rng/CryptoRngProvider.cs

@@ -0,0 +1,59 @@
+using System.Security.Cryptography;
+
+namespace System.Security.Rng
+{
+    public sealed class CryptoRngProvider : ICryptoRngProvider, IDisposable
+    {
+        private readonly RNGCryptoServiceProvider rngProvider;
+        private bool disposedValue;
+
+        public CryptoRngProvider()
+        {
+            this.rngProvider = new RNGCryptoServiceProvider();
+        }
+        public CryptoRngProvider(CspParameters cspParams)
+        {
+            this.rngProvider = new RNGCryptoServiceProvider(cspParams);
+        }
+
+
+        public void GetBytes(byte[] data)
+        {
+            this.rngProvider.GetBytes(data);
+        }
+        public void GetNonZeroBytes(byte[] data)
+        {
+            this.rngProvider.GetNonZeroBytes(data);
+        }
+        public byte[] GetBytes(int byteCount)
+        {
+            var bytes = new byte[byteCount];
+            this.GetBytes(bytes);
+            return bytes;
+        }
+        public byte[] GetNonZeroBytes(int byteCount)
+        {
+            var bytes = new byte[byteCount];
+            this.GetNonZeroBytes(bytes);
+            return bytes;
+        }
+
+        private void Dispose(bool disposing)
+        {
+            if (!this.disposedValue)
+            {
+                if (disposing)
+                {
+                    this.rngProvider.Dispose();
+                }
+
+                this.disposedValue = true;
+            }
+        }
+        public void Dispose()
+        {
+            this.Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}

SystemExtensions.NetStandard.Security/Rng/ICryptoRngProvider.cs

@@ -0,0 +1,28 @@
+namespace System.Security.Rng
+{
+    public interface ICryptoRngProvider
+    {
+        /// <summary>
+        /// Populate provided array of bytes with cryptographically secure random bytes.
+        /// </summary>
+        /// <param name="data">Array of bytes to be populated.</param>
+        public void GetBytes(byte[] data);
+        /// <summary>
+        /// Return an array of cryptographically secure random bytes.
+        /// </summary>
+        /// <param name="byteCount">Length of the returned array.</param>
+        /// <returns>Array containing cryptographically secure random values.</returns>
+        public byte[] GetBytes(int byteCount);
+        /// <summary>
+        /// Populate provided array of bytes with cryptographically secure random non-zero bytes.
+        /// </summary>
+        /// <param name="data">Array of bytes to be populated.</param>
+        public void GetNonZeroBytes(byte[] data);
+        /// <summary>
+        /// Return an array of cryptographically secure random non-zero bytes.
+        /// </summary>
+        /// <param name="byteCount">Length of the returned array.</param>
+        /// <returns>Array containing cryptographically secure random non-zero values.</returns>
+        public byte[] GetNonZeroBytes(int byteCount);
+    }
+}

SystemExtensions.NetStandard.Security/SystemExtensions.NetStandard.Security.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <LangVersion>latest</LangVersion>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <PackageLicenseFile>LICENSE</PackageLicenseFile>
+    <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+    <RootNamespace>System</RootNamespace>
+    <Version>1.2.3</Version>
+    <Authors>Alexandru Macocian</Authors>
+    <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+    <Description>Security extensions for the System namespace</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="../LICENSE">
+      <Pack>True</Pack>
+      <PackagePath></PackagePath>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="5.0.0" />
+  </ItemGroup>
+
+</Project>

SystemExtensions.NetStandard.Security/Utilities/NotClosingCryptoStream.cs

@@ -0,0 +1,23 @@
+using System.IO;
+using System.Security.Cryptography;
+
+namespace System.Security.Utilities
+{
+    internal sealed class NotClosingCryptoStream : CryptoStream
+    {
+        public NotClosingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
+            : base(stream, transform, mode)
+        {
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            if (!this.HasFlushedFinalBlock)
+            {
+                this.FlushFinalBlock();
+            }
+
+            base.Dispose(false);
+        }
+    }
+}

SystemExtensions.NetStandard/Collections/AVLTree.cs

@@ -60,7 +60,7 @@ namespace System.Collections.Generic
         public void Add(T value)
         {
             count++;
-            AVLNode<T> newItem = new AVLNode<T>(value);
+            var newItem = new AVLNode<T>(value);
             if (root == null)
             {
                 root = newItem;
@@ -77,7 +77,7 @@ namespace System.Collections.Generic
         /// <returns>True if the value is in the tree.</returns>
         public bool Contains(T value)
         {
-            AVLNode<T> node = Find(value, root);
+            var node = Find(value, root);
             if (node == null)
             {
                 return false;
@@ -105,12 +105,12 @@ namespace System.Collections.Generic
         /// </summary>
         public void Clear()
         {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
+            var queue = new Queue<AVLNode<T>>();
             queue.Enqueue(root);
 
             while (queue.Count > 0)
             {
-                AVLNode<T> currentNode = queue.Dequeue();
+                var currentNode = queue.Dequeue();
                 if (currentNode.Left != null)
                 {
                     queue.Enqueue(currentNode.Left);
@@ -134,11 +134,11 @@ namespace System.Collections.Generic
         /// <param name="arrayIndex">Starting index of the provided array.</param>
         public void CopyTo(T[] array, int arrayIndex)
         {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
+            var queue = new Queue<AVLNode<T>>();
             queue.Enqueue(root);
             while (queue.Count > 0)
             {
-                AVLNode<T> currentNode = queue.Dequeue();
+                var currentNode = queue.Dequeue();
                 array[arrayIndex++] = currentNode.Value;
                 if (currentNode.Left != null)
                 {
@@ -164,7 +164,7 @@ namespace System.Collections.Generic
         /// <returns>Array containing the values contained in the tree.</returns>
         public T[] ToArray()
         {
-            T[] array = new T[count];
+            var array = new T[count];
             CopyTo(array, 0);
             return array;
         }
@@ -191,7 +191,7 @@ namespace System.Collections.Generic
         }
         private AVLNode<T> BalanceTree(AVLNode<T> current)
         {
-            int b_factor = BalanceFactor(current);
+            var b_factor = BalanceFactor(current);
             if (b_factor > 1)
             {
                 if (BalanceFactor(current.Left) > 0)
@@ -299,7 +299,9 @@ namespace System.Collections.Generic
                     return current;
                 }
                 else
+                {
                     return Find(target, current.Left);
+                }
             }
             else
             {
@@ -308,7 +310,9 @@ namespace System.Collections.Generic
                     return current;
                 }
                 else
+                {
                     return Find(target, current.Right);
+                }
             }
 
         }
@@ -318,46 +322,46 @@ namespace System.Collections.Generic
         }
         private int GetHeight(AVLNode<T> current)
         {
-            int height = 0;
+            var height = 0;
             if (current != null)
             {
-                int l = GetHeight(current.Left);
-                int r = GetHeight(current.Right);
-                int m = Max(l, r);
+                var l = GetHeight(current.Left);
+                var r = GetHeight(current.Right);
+                var m = Max(l, r);
                 height = m + 1;
             }
             return height;
         }
         private int BalanceFactor(AVLNode<T> current)
         {
-            int l = GetHeight(current.Left);
-            int r = GetHeight(current.Right);
-            int b_factor = l - r;
+            var l = GetHeight(current.Left);
+            var r = GetHeight(current.Right);
+            var b_factor = l - r;
             return b_factor;
         }
         private AVLNode<T> RotateRR(AVLNode<T> parent)
         {
-            AVLNode<T> pivot = parent.Right;
+            var pivot = parent.Right;
             parent.Right = pivot.Left;
             pivot.Left = parent;
             return pivot;
         }
         private AVLNode<T> RotateLL(AVLNode<T> parent)
         {
-            AVLNode<T> pivot = parent.Left;
+            var pivot = parent.Left;
             parent.Left = pivot.Right;
             pivot.Right = parent;
             return pivot;
         }
         private AVLNode<T> RotateLR(AVLNode<T> parent)
         {
-            AVLNode<T> pivot = parent.Left;
+            var pivot = parent.Left;
             parent.Left = RotateRR(pivot);
             return RotateLL(parent);
         }
         private AVLNode<T> RotateRL(AVLNode<T> parent)
         {
-            AVLNode<T> pivot = parent.Right;
+            var pivot = parent.Right;
             parent.Right = RotateLL(pivot);
             return RotateRR(parent);
         }
@@ -367,12 +371,12 @@ namespace System.Collections.Generic
         }
         private IEnumerator<T> GetEnumerator(AVLNode<T> rootNode)
         {
-            Queue<AVLNode<T>> queue = new Queue<AVLNode<T>>();
+            var queue = new Queue<AVLNode<T>>();
             queue.Enqueue(rootNode);
 
             while (queue.Count > 0)
             {
-                AVLNode<T> currentNode = queue.Dequeue();
+                var currentNode = queue.Dequeue();
                 yield return currentNode.Value;
                 if (currentNode.Left != null)
                 {

SystemExtensions.NetStandard/Collections/BinaryHeap.cs

@@ -88,7 +88,7 @@ namespace System.Collections.Generic
             {
                 Capacity = 2 * Capacity;
             }
-            int position = ++count;
+            var position = ++count;
             for (; position > 1 && value.CompareTo(items[position / 2]) < 0; position /= 2)
             {
                 items[position] = items[position / 2];
@@ -105,7 +105,7 @@ namespace System.Collections.Generic
             {
                 throw new IndexOutOfRangeException("Heap is empty!");
             }
-            T min = items[1];
+            var min = items[1];
             items[1] = items[count--];
             BubbleDown(1);
             return min;
@@ -120,7 +120,7 @@ namespace System.Collections.Generic
             {
                 throw new IndexOutOfRangeException("Heap is empty!");
             }
-            T min = items[1];
+            var min = items[1];
             return min;
         }
         /// <summary>
@@ -129,7 +129,7 @@ namespace System.Collections.Generic
         /// <returns>Array with values sorted as in heap</returns>
         public T[] ToArray()
         {
-            T[] newArray = new T[count];
+            var newArray = new T[count];
             Array.Copy(items, 1, newArray, 0, count);
             return newArray;
         }
@@ -168,7 +168,7 @@ namespace System.Collections.Generic
         /// <returns>Enumerator that iterates over the heap.</returns>
         public IEnumerator<T> GetEnumerator()
         {
-            for (int i = 0; i < count; i++)
+            for (var i = 0; i < count; i++)
             {
                 yield return items[i + 1];
             }
@@ -181,7 +181,7 @@ namespace System.Collections.Generic
         /// <param name="index">Index of element to bubble</param>
         private void BubbleDown(int index)
         {
-            T temp = items[index];
+            var temp = items[index];
             int childIndex;
             for (; 2 * index <= count; index = childIndex)
             {

SystemExtensions.NetStandard/Collections/FibonacciHeap.cs

@@ -49,7 +49,7 @@
         /// <param name="value">Value to be added.</param>
         public void Add(T value)
         {
-            FibonacciNode<T> node = new FibonacciNode<T>
+            var node = new FibonacciNode<T>
             {
                 Value = value,
                 Marked = false,
@@ -77,7 +77,7 @@
         /// <returns>Minimum value.</returns>
         public T Remove()
         {
-            FibonacciNode<T> currentRoot = root;
+            var currentRoot = root;
             if (currentRoot != null)
             {
                 root = RemoveMinimum(root);
@@ -96,7 +96,7 @@
         /// <param name="value">New value to be assigned to the node.</param>
         public void DecreaseKey(T oldValue, T value)
         {
-            FibonacciNode<T> node = Find(root, oldValue);
+            var node = Find(root, oldValue);
             root = DecreaseKey(root, node, value);
         }
         /// <summary>
@@ -129,7 +129,7 @@
             {
                 return null;
             }
-            T[] array = new T[count];
+            var array = new T[count];
             if (count == 1)
             {
                 array[0] = root.Value;
@@ -137,7 +137,7 @@
             }
             else
             {
-                int index = 0;
+                var index = 0;
                 RecursiveFillArray(root, ref array, ref index);
                 return array;
             }
@@ -160,7 +160,7 @@
         /// <param name="index">Index of the next unintialized element in the array.</param>
         private void RecursiveFillArray(FibonacciNode<T> currentNode, ref T[] array, ref int index)
         {
-            FibonacciNode<T> oldNode = currentNode;
+            var oldNode = currentNode;
             do
             {
                 array[index] = currentNode.Value;
@@ -178,12 +178,12 @@
         /// <param name="currentNode">Current node in the iteration.</param>
         private IEnumerator<T> GetEnumerator(FibonacciNode<T> currentNode)
         {
-            Queue<FibonacciNode<T>> queue = new Queue<FibonacciNode<T>>();
+            var queue = new Queue<FibonacciNode<T>>();
             queue.Enqueue(currentNode);
             while (queue.Count > 0)
             {
                 currentNode = queue.Dequeue();
-                FibonacciNode<T> oldNode = currentNode;
+                var oldNode = currentNode;
                 do
                 {
                     yield return currentNode.Value;
@@ -204,7 +204,7 @@
         {
             if (node != null)
             {
-                FibonacciNode<T> current = node;
+                var current = node;
                 do
                 {
                     Remove(current.Child);
@@ -234,12 +234,12 @@
             }
             if (node1.Value.CompareTo(node2.Value) > 0)
             {
-                FibonacciNode<T> temp = node1;
+                var temp = node1;
                 node1 = node2;
                 node2 = temp;
             }
-            FibonacciNode<T> node1Next = node1.Next;
-            FibonacciNode<T> node2Prev = node2.Previous;
+            var node1Next = node1.Next;
+            var node2Prev = node2.Previous;
             node1.Next = node2;
             node2.Previous = node1;
             node1Next.Previous = node2Prev;
@@ -268,7 +268,7 @@
             {
                 return;
             }
-            FibonacciNode<T> current = node;
+            var current = node;
             do
             {
                 current.Marked = false;
@@ -299,12 +299,12 @@
                 return node;
             }
 
-            FibonacciNode<T>[] trees = new FibonacciNode<T>[64];
+            var trees = new FibonacciNode<T>[64];
             while (true)
             {
                 if (trees[node.Degree] != null)
                 {
-                    FibonacciNode<T> t = trees[node.Degree];
+                    var t = trees[node.Degree];
                     if (t == node)
                     {
                         break;
@@ -344,8 +344,8 @@
                 }
                 node = node.Next;
             }
-            FibonacciNode<T> min = node;
-            FibonacciNode<T> start = node;
+            var min = node;
+            var start = node;
             do
             {
                 if (node.Value.CompareTo(min.Value) < 0)
@@ -397,7 +397,7 @@
                 if (node.Value.CompareTo(node.Parent.Value) < 0)
                 {
                     root = Cut(root, node);
-                    FibonacciNode<T> parent = node.Parent;
+                    var parent = node.Parent;
                     node.Parent = null;
                     while (parent != null && parent.Marked)
                     {
@@ -429,7 +429,7 @@
         /// <returns></returns>
         private FibonacciNode<T> Find(FibonacciNode<T> root, T value)
         {
-            FibonacciNode<T> node = root;
+            var node = root;
             if (node == null)
             {
                 return null;
@@ -440,7 +440,7 @@
                 {
                     return node;
                 }
-                FibonacciNode<T> ret = Find(node.Child, value);
+                var ret = Find(node.Child, value);
                 if (ret != null)
                 {
                     return ret;

SystemExtensions.NetStandard/Collections/SkipList.cs

@@ -50,7 +50,7 @@
             random = new Random();
             head = new NodeSet<T>(default, maxLevel);
             end = head;
-            for (int i = 0; i <= maxLevel; i++)
+            for (var i = 0; i <= maxLevel; i++)
             {
                 head.Next[i] = end;
             }
@@ -64,8 +64,8 @@
         /// <param name="item">Item to be added.</param>
         public void Add(T item)
         {
-            NodeSet<T> curNode = head;
-            int newLevel = 0;
+            var curNode = head;
+            var newLevel = 0;
             while (random.Next(0, 2) > 0 && newLevel < maxLevel)
             {
                 newLevel++;
@@ -74,7 +74,7 @@
             {
                 level = newLevel;
             }
-            NodeSet<T> newNode = new NodeSet<T>(item, newLevel);
+            var newNode = new NodeSet<T>(item, newLevel);
             for (var i = 0; i <= newLevel; i++)
             {
                 if (i > curNode.Level)
@@ -97,8 +97,8 @@
         /// <returns>True if removal was successful.</returns>
         public bool Remove(T item)
         {
-            bool removed = false;
-            NodeSet<T> curNode = head;
+            var removed = false;
+            var curNode = head;
             for (var i = 0; i <= maxLevel; i++)
             {
                 if (i > curNode.Level)
@@ -134,7 +134,7 @@
         /// </summary>
         public void Clear()
         {
-            for (int i = 0; i < maxLevel; i++)
+            for (var i = 0; i < maxLevel; i++)
             {
                 head.Next[i] = end;
             }
@@ -160,7 +160,7 @@
         /// <param name="arrayIndex">Index to start insertion in the array.</param>
         public void CopyTo(T[] array, int arrayIndex)
         {
-            NodeSet<T> node = head.Next[0];
+            var node = head.Next[0];
             while (node != end)
             {
                 array[arrayIndex] = node.Key;
@@ -174,9 +174,9 @@
         /// <returns>Array filled with elements from the collection.</returns>
         public T[] ToArray()
         {
-            T[] array = new T[count];
-            int index = 0;
-            NodeSet<T> curNode = head.Next[0];
+            var array = new T[count];
+            var index = 0;
+            var curNode = head.Next[0];
             while (curNode != end)
             {
                 array[index] = curNode.Key;
@@ -191,7 +191,7 @@
         /// <returns></returns>
         public IEnumerator<T> GetEnumerator()
         {
-            NodeSet<T> curNode = head.Next[0];
+            var curNode = head.Next[0];
             while (curNode != end)
             {
                 yield return curNode.Key;
@@ -206,9 +206,9 @@
         }
         private NodeSet<T> Find(T key)
         {
-            NodeSet<T> curNode = head;
+            var curNode = head;
 
-            for (int i = level; i >= 0; i--)
+            for (var i = level; i >= 0; i--)
             {
                 while (curNode.Next[i] != end)
                 {

SystemExtensions.NetStandard/Collections/Treap.cs

@@ -97,8 +97,8 @@
         {
             if (root != null)
             {
-                T[] array = new T[count];
-                int index = 0;
+                var array = new T[count];
+                var index = 0;
                 ToArray(root, ref array, ref index);
                 return array;
             }
@@ -221,7 +221,7 @@
             {
                 if (node.Key.CompareTo(key) < 0)
                 {
-                    Node<T> found = Find(node.Left, key);
+                    var found = Find(node.Left, key);
                     if (found == null)
                     {
                         found = Find(node.Right, key);
@@ -230,7 +230,7 @@
                 }
                 else if (node.Key.CompareTo(key) > 0)
                 {
-                    Node<T> found = Find(node.Right, key);
+                    var found = Find(node.Right, key);
                     if (found == null)
                     {
                         found = Find(node.Left, key);
@@ -255,7 +255,7 @@
         }
         private IEnumerator<T> GetEnumerator(Node<T> currentNode)
         {
-            Queue<Node<T>> queue = new Queue<Node<T>>();
+            var queue = new Queue<Node<T>>();
             queue.Enqueue(currentNode);
             while (queue.Count > 0)
             {

SystemExtensions.NetStandard/Extensions/BytesExtensions.cs

@@ -6,10 +6,13 @@ namespace System.Extensions
     {
         public static byte[] ReadAllBytes(this Stream stream)
         {
-            if (stream is null) throw new ArgumentNullException(nameof(stream));
+            if (stream is null)
+            {
+                throw new ArgumentNullException(nameof(stream));
+            }
 
             var buffer = new byte[256];
-            using (MemoryStream ms = new MemoryStream())
+            using (var ms = new MemoryStream())
             {
                 int read;
                 while ((read = stream.Read(buffer, 0, 256)) > 0)

SystemExtensions.NetStandard/Extensions/LinqExtensions.cs

@@ -22,7 +22,10 @@ namespace System.Extensions
 
         public static ICollection<T> ClearAnd<T>(this ICollection<T> collection)
         {
-            if (collection is null) throw new ArgumentNullException(nameof(collection));
+            if (collection is null)
+            {
+                throw new ArgumentNullException(nameof(collection));
+            }
 
             collection.Clear();
             return collection;
@@ -30,10 +33,17 @@ namespace System.Extensions
         
         public static ICollection<T> AddRange<T>(this ICollection<T> collection, IEnumerable<T> values)
         {
-            if (collection is null) throw new ArgumentNullException(nameof(collection));
-            if (values is null) throw new ArgumentNullException(nameof(values));
+            if (collection is null)
+            {
+                throw new ArgumentNullException(nameof(collection));
+            }
 
-            foreach(var item in values)
+            if (values is null)
+            {
+                throw new ArgumentNullException(nameof(values));
+            }
+
+            foreach (var item in values)
             {
                 collection.Add(item);
             }
@@ -43,8 +53,15 @@ namespace System.Extensions
 
         public static int IndexOfWhere<T>(this ICollection<T> collection, Func<T, bool> selector)
         {
-            if (collection is null) throw new ArgumentNullException(nameof(collection));
-            if (selector is null) throw new ArgumentNullException(nameof(selector));
+            if (collection is null)
+            {
+                throw new ArgumentNullException(nameof(collection));
+            }
+
+            if (selector is null)
+            {
+                throw new ArgumentNullException(nameof(selector));
+            }
 
             var index = 0;
             foreach (var item in collection)

SystemExtensions.NetStandard/Extensions/ObjectExtensions.cs

@@ -1,7 +1,31 @@
-namespace System.Extensions
+using Newtonsoft.Json;
+
+namespace System.Extensions
 {
     public static class ObjectExtensions
     {
+        public static T Deserialize<T>(this string serialized)
+            where T : class
+        {
+            if (serialized.IsNullOrWhiteSpace())
+            {
+                throw new ArgumentException("Provided serialized string cannot be null or whitespace", nameof(serialized));
+            }
+
+            return JsonConvert.DeserializeObject<T>(serialized);
+        }
+
+        public static string Serialize<T>(this T obj)
+            where T : class
+        {
+            if (obj is null)
+            {
+                throw new ArgumentNullException(nameof(obj));
+            }
+
+            return JsonConvert.SerializeObject(obj);
+        }
+
         public static T Cast<T>(this object obj)
         {
             return (T)obj;
@@ -19,7 +43,10 @@
 
         public static T ThrowIfNull<T>([ValidatedNotNull] this T obj, string name) where T : class
         {
-            if (obj is null) throw new ArgumentNullException(name);
+            if (obj is null)
+            {
+                throw new ArgumentNullException(name);
+            }
 
             return obj;
         }

SystemExtensions.NetStandard/Extensions/Optional.cs

@@ -40,8 +40,15 @@
         }
         public Optional<T> Do(Action<T> onSome, Action onNone)
         {
-            if (onSome is null) throw new ArgumentNullException(nameof(onSome));
-            if (onNone is null) throw new ArgumentNullException(nameof(onNone));
+            if (onSome is null)
+            {
+                throw new ArgumentNullException(nameof(onSome));
+            }
+
+            if (onNone is null)
+            {
+                throw new ArgumentNullException(nameof(onNone));
+            }
 
             if (this is Some)
             {
@@ -67,8 +74,15 @@
         }
         public Optional<V> Switch<V>(Func<T, V> onSome, Func<V> onNone)
         {
-            if (onSome is null) throw new ArgumentNullException($"{nameof(onSome)}");
-            if (onNone is null) throw new ArgumentNullException($"{nameof(onNone)}");
+            if (onSome is null)
+            {
+                throw new ArgumentNullException($"{nameof(onSome)}");
+            }
+
+            if (onNone is null)
+            {
+                throw new ArgumentNullException($"{nameof(onNone)}");
+            }
 
             if (this is Some)
             {

SystemExtensions.NetStandard/Extensions/Result.cs

@@ -43,9 +43,15 @@
         }
         public Result<TSuccess, TFailure> Do(Action onSuccess, Action onFailure)
         {
-            if (onSuccess is null) throw new ArgumentNullException(nameof(onSuccess));
+            if (onSuccess is null)
+            {
+                throw new ArgumentNullException(nameof(onSuccess));
+            }
 
-            if (onFailure is null) throw new ArgumentNullException(nameof(onFailure));
+            if (onFailure is null)
+            {
+                throw new ArgumentNullException(nameof(onFailure));
+            }
 
             if (value is TSuccess)
             {
@@ -71,9 +77,15 @@
         }
         public Result<TSuccess, TFailure> Do(Action<TSuccess> onSuccess, Action<TFailure> onFailure)
         {
-            if (onSuccess is null) throw new ArgumentNullException(nameof(onSuccess));
+            if (onSuccess is null)
+            {
+                throw new ArgumentNullException(nameof(onSuccess));
+            }
 
-            if (onFailure is null) throw new ArgumentNullException(nameof(onFailure));
+            if (onFailure is null)
+            {
+                throw new ArgumentNullException(nameof(onFailure));
+            }
 
             if (value is TSuccess success)
             {
@@ -99,9 +111,15 @@
         }
         public T Switch<T>(Func<TSuccess, T> onSuccess, Func<TFailure, T> onFailure)
         {
-            if (onSuccess is null) throw new ArgumentNullException(nameof(onSuccess));
+            if (onSuccess is null)
+            {
+                throw new ArgumentNullException(nameof(onSuccess));
+            }
 
-            if (onFailure is null) throw new ArgumentNullException(nameof(onFailure));
+            if (onFailure is null)
+            {
+                throw new ArgumentNullException(nameof(onFailure));
+            }
 
             if (value is TSuccess success)
             {
@@ -127,9 +145,15 @@
         }
         public Result<V, K> Switch<V, K>(Func<TSuccess, V> onSuccess, Func<TFailure, K> onFailure)
         {
-            if (onSuccess is null) throw new ArgumentNullException(nameof(onSuccess));
+            if (onSuccess is null)
+            {
+                throw new ArgumentNullException(nameof(onSuccess));
+            }
 
-            if (onFailure is null) throw new ArgumentNullException(nameof(onFailure));
+            if (onFailure is null)
+            {
+                throw new ArgumentNullException(nameof(onFailure));
+            }
 
             if (value is TSuccess success)
             {

SystemExtensions.NetStandard/Extensions/StreamExtensions.cs

@@ -7,8 +7,15 @@ namespace System.Extensions
     {
         public static void DoWhileReading(this Stream stream, Action<int, byte[]> action, int bufferLength = 256)
         {
-            if (stream is null) throw new ArgumentNullException(nameof(stream));
-            if (action is null) throw new ArgumentNullException(nameof(action));
+            if (stream is null)
+            {
+                throw new ArgumentNullException(nameof(stream));
+            }
+
+            if (action is null)
+            {
+                throw new ArgumentNullException(nameof(action));
+            }
 
             var buffer = new byte[bufferLength];
             var read = stream.Read(buffer, 0, bufferLength);
@@ -21,7 +28,10 @@ namespace System.Extensions
 
         public static byte[] ReadBytes(this Stream stream, int count)
         {
-            if (stream is null) throw new ArgumentNullException(nameof(stream));
+            if (stream is null)
+            {
+                throw new ArgumentNullException(nameof(stream));
+            }
 
             var buffer = new byte[count];
             stream.Read(buffer, 0, count);
@@ -30,9 +40,15 @@ namespace System.Extensions
 
         public static Stream Rewind(this Stream stream)
         {
-            if (stream is null) throw new ArgumentNullException(nameof(stream));
+            if (stream is null)
+            {
+                throw new ArgumentNullException(nameof(stream));
+            }
 
-            if (!stream.CanSeek) throw new InvalidOperationException("Stream doesn't support rewinding");
+            if (!stream.CanSeek)
+            {
+                throw new InvalidOperationException("Stream doesn't support rewinding");
+            }
 
             stream.Seek(0, SeekOrigin.Begin);
             return stream;
@@ -41,17 +57,19 @@ namespace System.Extensions
         public static string ReadUntil(this StreamReader sr, string delim)
         {
             var sb = new StringBuilder();
-            bool found = false;
+            var found = false;
 
             while (!found && !sr.EndOfStream)
             {
-                for (int i = 0; i < delim.Length; i++)
+                for (var i = 0; i < delim.Length; i++)
                 {
-                    char c = (char)sr.Read();
+                    var c = (char)sr.Read();
                     sb.Append(c);
 
                     if (c != delim[i])
+                    {
                         break;
+                    }
 
                     if (i == delim.Length - 1)
                     {

SystemExtensions.NetStandard/Extensions/TaskExtensions.cs

@@ -44,13 +44,17 @@ namespace System.Extensions
         public static async Task RunPeriodicAsync(this Action onTick, TimeSpan dueTime, TimeSpan interval, CancellationToken token)
         {
             if (dueTime > TimeSpan.Zero)
+            {
                 await Task.Delay(dueTime, token).ConfigureAwait(false);
+            }
 
             while (!token.IsCancellationRequested)
             {
                 onTick?.Invoke();
                 if (interval > TimeSpan.Zero)
+                {
                     await Task.Delay(interval, token).ConfigureAwait(false);
+                }
             }
         }
 
@@ -95,7 +99,7 @@ namespace System.Extensions
             var oldContext = SynchronizationContext.Current;
             var synch = new ExclusiveSynchronizationContext();
             SynchronizationContext.SetSynchronizationContext(synch);
-            T ret = default(T);
+            var ret = default(T);
             synch.Post(async _ =>
             {
                 try

SystemExtensions.NetStandard/Extensions/Try.cs

@@ -46,7 +46,10 @@ namespace System.Extensions
 
         public TResult Finally(Action act)
         {
-            if (act is null) throw new ArgumentNullException(nameof(act));
+            if (act is null)
+            {
+                throw new ArgumentNullException(nameof(act));
+            }
 
             try
             {

SystemExtensions.NetStandard/SystemExtensions.NetStandard.csproj

@@ -2,13 +2,15 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
+	<LangVersion>latest</LangVersion>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <RootNamespace>System</RootNamespace>
-    <Version>1.3.0</Version>
+    <Version>1.3.2</Version>
     <Authors>Alexandru Macocian</Authors>
     <RepositoryUrl>https://github.com/AlexMacocian/SystemExtensions</RepositoryUrl>
+    <Description>Extensions for the System namespace</Description>
   </PropertyGroup>
 
   <ItemGroup>
@@ -18,4 +20,8 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+  </ItemGroup>
+
 </Project>

SystemExtensions.NetStandard/Threading/PriorityThreadPool.cs

@@ -174,7 +174,7 @@ namespace System.Threading
             threadpool = new List<WorkerThread>();
             tasks = new PriorityQueue<QueueEntry>();
             maxThreads = System.Environment.ProcessorCount;
-            for (int i = 0; i < maxThreads; i++)
+            for (var i = 0; i < maxThreads; i++)
             {
                 this.CreateAndStartWorkerThread();
             }
@@ -194,7 +194,7 @@ namespace System.Threading
             threadpool = new List<WorkerThread>();
             tasks = new PriorityQueue<QueueEntry>();
             this.maxThreads = Math.Max(maxThreads, 1);
-            for (int i = 0; i < maxThreads; i++)
+            for (var i = 0; i < maxThreads; i++)
             {
                 this.CreateAndStartWorkerThread();
             }
@@ -216,23 +216,23 @@ namespace System.Threading
         {
             threadpool = new List<WorkerThread>();
             tasks = new PriorityQueue<QueueEntry>();
-            for (int i = 0; i < lowest; i++)
+            for (var i = 0; i < lowest; i++)
             {
                 this.CreateAndStartWorkerThread(ThreadPriority.Lowest);
             }
-            for (int i = 0; i < belowNormal; i++)
+            for (var i = 0; i < belowNormal; i++)
             {
                 this.CreateAndStartWorkerThread(ThreadPriority.BelowNormal);
             }
-            for (int i = 0; i < normal; i++)
+            for (var i = 0; i < normal; i++)
             {
                 this.CreateAndStartWorkerThread(ThreadPriority.Normal);
             }
-            for (int i = 0; i < aboveNormal; i++)
+            for (var i = 0; i < aboveNormal; i++)
             {
                 this.CreateAndStartWorkerThread(ThreadPriority.AboveNormal);
             }
-            for (int i = 0; i < highest; i++)
+            for (var i = 0; i < highest; i++)
             {
                 this.CreateAndStartWorkerThread(ThreadPriority.Highest);
             }
@@ -247,7 +247,11 @@ namespace System.Threading
         /// <param name="taskPriority">Priority of task. Affects its position into the queue.</param>
         public void QueueUserWorkItem(WaitCallback waitCallback, object callbackState, TaskPriority taskPriority)
         {
-            while (!Monitor.TryEnter(tasksLock)) ;
+            while (!Monitor.TryEnter(tasksLock))
+            {
+                ;
+            }
+
             tasks.Enqueue(new QueueEntry(taskPriority, waitCallback, callbackState));
             Monitor.Exit(tasksLock);
         }
@@ -307,7 +311,11 @@ namespace System.Threading
 
                     thisWorkerThread.Working = true;
                     QueueEntry task = null;
-                    while (!Monitor.TryEnter(tasksLock)) ;
+                    while (!Monitor.TryEnter(tasksLock))
+                    {
+                        ;
+                    }
+
                     if (tasks.Count > 0)
                     {
                         task = tasks.Dequeue();
@@ -316,7 +324,7 @@ namespace System.Threading
                     if (task != null)
                     {
                         System.Diagnostics.Debug.WriteLine(Thread.CurrentThread.Name + " - Running task!");
-                        WaitCallback waitCallback = task.WaitCallback;
+                        var waitCallback = task.WaitCallback;
                         waitCallback.Invoke(task.Object);
                     }
                     thisWorkerThread.Working = false;
@@ -328,7 +336,7 @@ namespace System.Threading
         /// </summary>
         private void ObserverLoop()
         {
-            Statistics statistics = new Statistics();
+            var statistics = new Statistics();
             while (true)
             {
                 //Observer operates on a 100ms loop. Due to the low priority of the thread itself, this loop will almost always take
@@ -346,7 +354,7 @@ namespace System.Threading
                 //This part of code updates the statistics of the threadpool.
                 if (statistics.Initialized)
                 {
-                    double loopDuration = (DateTime.Now - statistics.LastUpdate).TotalMilliseconds;
+                    var loopDuration = (DateTime.Now - statistics.LastUpdate).TotalMilliseconds;
                     if (statistics.LoopFrequency == 0)
                     {
                         statistics.LoopFrequency = loopDuration;
@@ -387,7 +395,7 @@ namespace System.Threading
                 if (tasks.Count > 0)
                 {
                     //If there are tasks pending, find a thread with priority under Normal and upgrade its priority.
-                    Thread t = FindThreadWithLowPriority();
+                    var t = FindThreadWithLowPriority();
                     if (t != null)
                     {
                         UpgradeThreadPriority(t);
@@ -396,7 +404,7 @@ namespace System.Threading
                 else
                 {
                     //If there are no tasks pending, find a thread with priority above Lowest and downgrade its priority.
-                    Thread t = FindThreadWithAcceptablePriority();
+                    var t = FindThreadWithAcceptablePriority();
                     if (t != null)
                     {
                         DowngradeThreadPriority(t);
@@ -423,7 +431,7 @@ namespace System.Threading
                         //If thread is currently working, notify it to close.
                         //Else, abort the thread.
                         //Reset counter to 0.
-                        WorkerThread worker = threadpool[threadpool.Count - 1];
+                        var worker = threadpool[threadpool.Count - 1];
                         if (worker.Working)
                         {
                             worker.Running = false;
@@ -444,7 +452,7 @@ namespace System.Threading
         /// <returns>Thread with low priority.</returns>
         private Thread FindThreadWithLowPriority()
         {
-            foreach (WorkerThread t in threadpool)
+            foreach (var t in threadpool)
             {
                 if (t.Thread.Priority == ThreadPriority.Lowest || t.Thread.Priority == ThreadPriority.BelowNormal)
                 {
@@ -459,7 +467,7 @@ namespace System.Threading
         /// <returns>Thread with BelowNormal or Normal priority.</returns>
         private Thread FindThreadWithAcceptablePriority()
         {
-            foreach (WorkerThread t in threadpool)
+            foreach (var t in threadpool)
             {
                 if (t.Thread.Priority == ThreadPriority.Normal || t.Thread.Priority == ThreadPriority.BelowNormal)
                 {
@@ -538,7 +546,7 @@ namespace System.Threading
                         this.observerCancellationTokenSource.Cancel();
                         this.observer.Join();
                     }
-                    foreach (WorkerThread worker in threadpool)
+                    foreach (var worker in threadpool)
                     {
                         worker.CancellationTokenSource.Cancel();
                         worker.Thread.Join();

SystemExtensions.Tests/Collections/AVLTreeTests.cs

@@ -20,7 +20,7 @@ namespace System.Collections.Tests
         {
             try
             {
-                for (int i = 0; i < 100; i++)
+                for (var i = 0; i < 100; i++)
                 {
                     avlTree.Add(i * 20 - (50 + i));
                 }
@@ -38,7 +38,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ContainsTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
@@ -52,7 +52,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void RemoveTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
@@ -68,7 +68,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
@@ -82,24 +82,24 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void CopyToTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
 
-            int[] array = new int[100];
+            var array = new int[100];
             avlTree.CopyTo(array, 0);
         }
 
         [TestMethod()]
         public void GetEnumeratorTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
-            int count = 0;
-            foreach(int value in avlTree)
+            var count = 0;
+            foreach(var value in avlTree)
             {
                 count++;
                 System.Diagnostics.Debug.WriteLine(value);
@@ -114,34 +114,34 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ToArrayTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
 
-            int[] array = avlTree.ToArray();
+            var array = avlTree.ToArray();
         }
 
         [TestMethod()]
         public void Serialize()
         {
-            AVLTree<int> avlTree2 = new AVLTree<int>();
-            for (int i = 0; i < 100; i++)
+            var avlTree2 = new AVLTree<int>();
+            for (var i = 0; i < 100; i++)
             {
                 avlTree.Add(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream())
             {
                 serializer.Serialize(stream, avlTree);
                 stream.Position = 0;
                 avlTree2 = (AVLTree<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> avlTreeEnum = avlTree.GetEnumerator();
-            IEnumerator<int> avlTree2Enum = avlTree2.GetEnumerator();
+            var avlTreeEnum = avlTree.GetEnumerator();
+            var avlTree2Enum = avlTree2.GetEnumerator();
             
-            for(int i = 0; i < 100; i++)
+            for(var i = 0; i < 100; i++)
             {
                 if(avlTreeEnum.Current != avlTree2Enum.Current)
                 {

SystemExtensions.Tests/Collections/BinaryHeapTests.cs

@@ -31,7 +31,7 @@ namespace System.Collections.Tests
         {
             try
             {
-                for (int i = 0; i < 100; i++)
+                for (var i = 0; i < 100; i++)
                 {
                     binaryHeap.Add(i * 20 - (50 + i));
                 }
@@ -52,7 +52,7 @@ namespace System.Collections.Tests
         {
             try
             {
-                int tries = binaryHeap.Count;
+                var tries = binaryHeap.Count;
                 while (binaryHeap.Count > 0)
                 {
                     if (tries == 0)
@@ -72,7 +72,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void MinMaxTest()
         {
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 binaryHeap.Add(i);
             }
@@ -85,7 +85,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest()
         {
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 binaryHeap.Add(i);
             }
@@ -99,12 +99,12 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest2()
         {
-            for (int i = 100; i < 200; i++)
+            for (var i = 100; i < 200; i++)
             {
                 binaryHeap.Add(i);
             }
             binaryHeap.Clear(false);
-            int[] array = binaryHeap.ToArray();
+            var array = binaryHeap.ToArray();
             if (binaryHeap.Count > 0 || binaryHeap.Capacity == 10)
             {
                 Assert.Fail();
@@ -133,11 +133,11 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ToArrayTest()
         {
-            for(int i = 0; i < 1000; i++)
+            for(var i = 0; i < 1000; i++)
             {
                 binaryHeap.Add(i);
             }
-            int[] array = binaryHeap.ToArray();
+            var array = binaryHeap.ToArray();
             if(array.Length != binaryHeap.Count)
             {
                 Assert.Fail();
@@ -151,12 +151,12 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void GetEnumeratorTest()
         {
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 binaryHeap.Add(i);
             }
-            int count = 0;
-            foreach(int value in binaryHeap)
+            var count = 0;
+            foreach(var value in binaryHeap)
             {
                 System.Diagnostics.Debug.WriteLine(value);
                 count++;
@@ -173,22 +173,22 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void Serialize()
         {
-            BinaryHeap<int> binaryHeap2 = new BinaryHeap<int>();
-            for (int i = 0; i < 100; i++)
+            var binaryHeap2 = new BinaryHeap<int>();
+            for (var i = 0; i < 100; i++)
             {
                 binaryHeap.Add(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream()) {
                 serializer.Serialize(stream, binaryHeap);
                 stream.Position = 0;
                 binaryHeap2 = (BinaryHeap<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> binaryHeapEnum = binaryHeap.GetEnumerator();
-            IEnumerator<int> binaryHeapEnum2 = binaryHeap2.GetEnumerator();
+            var binaryHeapEnum = binaryHeap.GetEnumerator();
+            var binaryHeapEnum2 = binaryHeap2.GetEnumerator();
 
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 if (binaryHeapEnum.Current != binaryHeapEnum2.Current)
                 {

SystemExtensions.Tests/Collections/FibonacciHeapTests.cs

@@ -12,7 +12,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void InsertTest()
         {
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 fibonacciHeap.Add(i);
             }
@@ -31,21 +31,21 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void MergeTest()
         {
-            FibonacciHeap<int> fibonacciHeap1 = new FibonacciHeap<int>();
-            FibonacciHeap<int> fibonacciHeap2 = new FibonacciHeap<int>();
+            var fibonacciHeap1 = new FibonacciHeap<int>();
+            var fibonacciHeap2 = new FibonacciHeap<int>();
 
-            for(int i = 0; i < 100; i++)
+            for(var i = 0; i < 100; i++)
             {
                 fibonacciHeap1.Add(i);
             }
 
-            for(int i = 100; i < 300; i++)
+            for(var i = 100; i < 300; i++)
             {
                 fibonacciHeap2.Add(i);
             }
 
             fibonacciHeap1.Merge(fibonacciHeap2);
-            for(int i = 1; i < 300; i++)
+            for(var i = 1; i < 300; i++)
             {
                 if (!fibonacciHeap1.Contains(i))
                 {
@@ -70,11 +70,11 @@ namespace System.Collections.Tests
             {
                 Assert.Fail();
             }
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 fibonacciHeap.Add(i);
             }
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 if (fibonacciHeap.Remove() != i)
                 {
@@ -104,7 +104,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ContainsTest()
         {
-            for(int i = 0; i < 10000; i++)
+            for(var i = 0; i < 10000; i++)
             {
                 fibonacciHeap.Add(i);
             }
@@ -117,7 +117,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest()
         {
-            for(int i = 0; i < 10000; i++)
+            for(var i = 0; i < 10000; i++)
             {
                 fibonacciHeap.Add(i);
             }
@@ -132,14 +132,14 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ToArrayTest()
         {
-            for(int i = 999; i >= 0; i--)
+            for(var i = 999; i >= 0; i--)
             {
                 fibonacciHeap.Add(i);
             }
             fibonacciHeap.Remove();
-            int[] arr = fibonacciHeap.ToArray();
+            var arr = fibonacciHeap.ToArray();
 
-            for(int i = 1; i < 512; i++)
+            for(var i = 1; i < 512; i++)
             {
                 if(arr[i - 1] != i)
                 {
@@ -151,14 +151,14 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void GetEnumeratorTest()
         {
-            for (int i = 999; i >= 0; i--)
+            for (var i = 999; i >= 0; i--)
             {
                 fibonacciHeap.Add(i);
             }
 
-            int count = 0;
+            var count = 0;
 
-            foreach(int value in fibonacciHeap)
+            foreach(var value in fibonacciHeap)
             {
                 System.Diagnostics.Debug.WriteLine(value);
                 count++;
@@ -175,23 +175,23 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void Serialize()
         {
-            FibonacciHeap<int> fibonacciHeap2 = new FibonacciHeap<int>();
-            for (int i = 0; i < 100; i++)
+            var fibonacciHeap2 = new FibonacciHeap<int>();
+            for (var i = 0; i < 100; i++)
             {
                 fibonacciHeap.Add(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream())
             {
                 serializer.Serialize(stream, fibonacciHeap);
                 stream.Position = 0;
                 fibonacciHeap2 = (FibonacciHeap<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> enum1 = fibonacciHeap.GetEnumerator();
-            IEnumerator<int> enum2 = fibonacciHeap2.GetEnumerator();
+            var enum1 = fibonacciHeap.GetEnumerator();
+            var enum2 = fibonacciHeap2.GetEnumerator();
 
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 if (enum1.Current != enum2.Current)
                 {

SystemExtensions.Tests/Collections/PriorityQueueTests.cs

@@ -29,7 +29,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void EnqueueTest()
         {
-            for(int i = 0; i < 100; i++)
+            for(var i = 0; i < 100; i++)
             {
                 priorityQueue.Enqueue(i);
             }
@@ -42,11 +42,11 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void DequeueTest()
         {
-            for(int i = 0; i < 100; i++)
+            for(var i = 0; i < 100; i++)
             {
                 priorityQueue.Enqueue(i);
             }
-            for(int i = 0; i < 100; i++)
+            for(var i = 0; i < 100; i++)
             {
                 if(i != priorityQueue.Dequeue())
                 {
@@ -81,23 +81,23 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void Serialize()
         {
-            PriorityQueue<int> priorityQueue2 = new PriorityQueue<int>();
-            for (int i = 0; i < 100; i++)
+            var priorityQueue2 = new PriorityQueue<int>();
+            for (var i = 0; i < 100; i++)
             {
                 priorityQueue.Enqueue(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream())
             {
                 serializer.Serialize(stream, priorityQueue);
                 stream.Position = 0;
                 priorityQueue2 = (PriorityQueue<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> enum1 = priorityQueue.GetEnumerator();
-            IEnumerator<int> enum2 = priorityQueue2.GetEnumerator();
+            var enum1 = priorityQueue.GetEnumerator();
+            var enum2 = priorityQueue2.GetEnumerator();
 
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 if (enum1.Current != enum2.Current)
                 {

SystemExtensions.Tests/Collections/SkipListTests.cs

@@ -12,19 +12,19 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void SkipListTest()
         {
-            SkipList<int> skipList = new SkipList<int>();
+            var skipList = new SkipList<int>();
         }
 
         [TestMethod()]
         public void SkipListTest2()
         {
-            SkipList<int> skipList = new SkipList<int>(30);
+            var skipList = new SkipList<int>(30);
         }
 
         [TestMethod()]
         public void AddTest()
         {
-            for(int i = 0; i < 200; i++)
+            for(var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
@@ -33,7 +33,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
@@ -47,7 +47,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ContainsTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
@@ -61,13 +61,13 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void CopyToTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
-            int[] array = new int[skipList.Count];
+            var array = new int[skipList.Count];
             skipList.CopyTo(array, 0);
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 if(array[i] != i)
                 {
@@ -79,13 +79,13 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ToArrayTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
-            int[] array = skipList.ToArray();
+            var array = skipList.ToArray();
 
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 if(array[i] != i)
                 {
@@ -97,12 +97,12 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void GetEnumeratorTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
 
-            foreach(int i in skipList)
+            foreach(var i in skipList)
             {
                 System.Diagnostics.Debug.WriteLine(i);
             }
@@ -111,7 +111,7 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void RemoveTest()
         {
-            for (int i = 0; i < 200; i++)
+            for (var i = 0; i < 200; i++)
             {
                 skipList.Add(i);
             }
@@ -126,23 +126,23 @@ namespace System.Collections.Tests
         [Ignore("Binary serialization is obsolete and should not be used anymore")]
         public void Serialize()
         {
-            SkipList<int> skipList2 = new SkipList<int>();
-            for (int i = 0; i < 100; i++)
+            var skipList2 = new SkipList<int>();
+            for (var i = 0; i < 100; i++)
             {
                 skipList.Add(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream())
             {
                 serializer.Serialize(stream, skipList);
                 stream.Position = 0;
                 skipList2 = (SkipList<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> enum1 = skipList.GetEnumerator();
-            IEnumerator<int> enum2 = skipList2.GetEnumerator();
+            var enum1 = skipList.GetEnumerator();
+            var enum2 = skipList2.GetEnumerator();
 
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 if (enum1.Current != enum2.Current)
                 {

SystemExtensions.Tests/Collections/TreapTests.cs

@@ -18,8 +18,8 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void InsertTest()
         {
-            Random random = new Random();
-            for(int i = 0; i < 1000; i++)
+            var random = new Random();
+            for(var i = 0; i < 1000; i++)
             {
                 treap.Add(random.Next(0, 5000));
             }
@@ -41,8 +41,8 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ClearTest()
         {
-            Random random = new Random();
-            for (int i = 0; i < 100; i++)
+            var random = new Random();
+            for (var i = 0; i < 100; i++)
             {
                 treap.Add(random.Next(0, 5000));
             }
@@ -71,12 +71,12 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void ToArrayTest()
         {
-            for(int i = 0; i < 1000; i++)
+            for(var i = 0; i < 1000; i++)
             {
                 treap.Add(i);
             }
-            int[] arr = treap.ToArray();
-            for(int i = 0; i < 1000; i++)
+            var arr = treap.ToArray();
+            for(var i = 0; i < 1000; i++)
             {
                 if(arr[i] != i)
                 {
@@ -88,13 +88,13 @@ namespace System.Collections.Tests
         [TestMethod()]
         public void GetEnumeratorTest()
         {
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
                 treap.Add(i);
             }
 
-            int count = 0;
-            foreach(int value in treap)
+            var count = 0;
+            foreach(var value in treap)
             {
                 System.Diagnostics.Debug.WriteLine(value);
                 count++;
@@ -112,23 +112,23 @@ namespace System.Collections.Tests
         [Ignore("Binary serialization is obsolete and should not be used anymore")]
         public void Serialize()
         {
-            Treap<int> treap2 = new Treap<int>();
-            for (int i = 0; i < 100; i++)
+            var treap2 = new Treap<int>();
+            for (var i = 0; i < 100; i++)
             {
                 treap.Add(i);
             }
-            BinaryFormatter serializer = new BinaryFormatter();
-            string s = string.Empty;
+            var serializer = new BinaryFormatter();
+            var s = string.Empty;
             using (var stream = new MemoryStream())
             {
                 serializer.Serialize(stream, treap);
                 stream.Position = 0;
                 treap2 = (Treap<int>)serializer.Deserialize(stream);
             }
-            IEnumerator<int> enum1 = treap.GetEnumerator();
-            IEnumerator<int> enum2 = treap2.GetEnumerator();
+            var enum1 = treap.GetEnumerator();
+            var enum2 = treap2.GetEnumerator();
 
-            for (int i = 0; i < 100; i++)
+            for (var i = 0; i < 100; i++)
             {
                 if (enum1.Current != enum2.Current)
                 {

SystemExtensions.Tests/Extensions/ObjectExtensionsTests.cs

@@ -0,0 +1,42 @@
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace System.Extensions.Tests;
+
+[TestClass]
+public class ObjectExtensionsTests
+{
+    [TestMethod]
+    public void ThrowIfNull_NetCore_ThrowsWithCorrectName()
+    {
+        object obj = null;
+        try
+        {
+            System.Core.Extensions.ObjectExtensions.ThrowIfNull(obj);
+        }
+        catch (ArgumentNullException ex)
+        {
+            ex.ParamName.Should().Be("obj");
+            return;
+        }
+
+        Assert.Fail("Null object should throw");
+    }
+
+    [TestMethod]
+    public void ThrowIfNull_NetStandard_ThrowsWithCorrectName()
+    {
+        object obj = null;
+        try
+        {
+            ObjectExtensions.ThrowIfNull(obj, nameof(obj));
+        }
+        catch (ArgumentNullException ex)
+        {
+            ex.ParamName.Should().Be("obj");
+            return;
+        }
+
+        Assert.Fail("Null object should throw");
+    }
+}

SystemExtensions.Tests/Http/HttpClientTests.cs

@@ -1,7 +1,5 @@
 using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System;
-using System.Http;
 using System.IO;
 using System.Net;
 using System.Net.Http;
@@ -9,7 +7,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using SystemExtensionsTests.Utils;
 
-namespace SystemExtensionsTests.Http
+namespace System.Http.Tests
 {
     [TestClass]
     public class HttpClientTests
@@ -32,7 +30,7 @@ namespace SystemExtensionsTests.Http
         [TestMethod]
         public async Task HttpClientEmitsCorrectMessages()
         {
-            int messagesEmitted = 0;
+            var messagesEmitted = 0;
             this.httpClient.EventEmitted += (sender, message) =>
             {
                 messagesEmitted++;
@@ -309,7 +307,7 @@ namespace SystemExtensionsTests.Http
             this.handler.ResponseResolverAsync = async (request) =>
             {
                 request.RequestUri.Should().Be(expectedUri);
-                for (int i = 0; i < 10; i++)
+                for (var i = 0; i < 10; i++)
                 {
                     await Task.Delay(100);
                 }

SystemExtensions.Tests/Structures/Int64BitStructTests.cs

@@ -53,7 +53,7 @@ namespace System.Structures.BitStructures.Tests
         [DataRow(int.MaxValue, int.MinValue)]
         public void TestLowHigh(int low, int high)
         {
-            Int64BitStruct int64 = new Int64BitStruct(low, high);
+            var int64 = new Int64BitStruct(low, high);
             Int32BitStruct lowStruct = low;
             Int32BitStruct highStruct = high;
             Assert.IsTrue(int64.Low == lowStruct);

SystemExtensions.Tests/SystemExtensions.NetStandard.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
@@ -18,6 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\SystemExtensions.NetCore\SystemExtensions.NetCore.csproj" />
     <ProjectReference Include="..\SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj" />
   </ItemGroup>
 

SystemExtensions.Tests/Threading/PriorityThreadPoolTests.cs

@@ -49,7 +49,7 @@ namespace System.Threading.Tests
             Thread.Sleep(100);
             try
             {
-                int x = threadPool.NumberOfThreads;
+                var x = threadPool.NumberOfThreads;
                 Assert.Fail();
             }
             catch(Exception e)
@@ -63,17 +63,17 @@ namespace System.Threading.Tests
         {
             threadPool.Dispose();
             threadPool = new PriorityThreadPool();
-            for (int i = 0; i < 10; i++)
+            for (var i = 0; i < 10; i++)
             {
                 threadPool.QueueUserWorkItem(o =>
                 {
-                    for (int x = 0; x < 100; x++)
+                    for (var x = 0; x < 100; x++)
                     {
                         System.Diagnostics.Debug.WriteLine(Thread.CurrentThread.ManagedThreadId + " - " + x);
                     }
                 }, null);
             }
-            for (int i = 0; i < 10; i++)
+            for (var i = 0; i < 10; i++)
             {
                 System.Diagnostics.Debug.WriteLine("=====================================");
                 System.Diagnostics.Debug.WriteLine("Current threads in threadpool: " + threadPool.NumberOfThreads);
@@ -98,11 +98,11 @@ namespace System.Threading.Tests
             {
                 Assert.Fail();
             }
-            for (int i = 0; i < 10; i++)
+            for (var i = 0; i < 10; i++)
             {
                 threadPool.QueueUserWorkItem(o =>
                 {
-                    for (int x = 0; x < 100; x++)
+                    for (var x = 0; x < 100; x++)
                     {
                         System.Diagnostics.Debug.WriteLine(Thread.CurrentThread.ManagedThreadId + " - " + x);
                     }
@@ -126,11 +126,11 @@ namespace System.Threading.Tests
             {
                 Assert.Fail();
             }
-            for (int i = 0; i < 10; i++)
+            for (var i = 0; i < 10; i++)
             {
                 threadPool.QueueUserWorkItem(o =>
                 {
-                    for (int x = 0; x < 100; x++)
+                    for (var x = 0; x < 100; x++)
                     {
                         switch (Thread.CurrentThread.Priority)
                         {
@@ -153,7 +153,7 @@ namespace System.Threading.Tests
                     }
                 }, null);
             }
-            for (int i = 0; i < 50; i++)
+            for (var i = 0; i < 50; i++)
             {
                 System.Diagnostics.Debug.WriteLine("=====================================");
                 System.Diagnostics.Debug.WriteLine("Current threads in threadpool: " + threadPool.NumberOfThreads);
@@ -168,9 +168,9 @@ namespace System.Threading.Tests
         {
             threadPool.Dispose();
             threadPool = new PriorityThreadPool();
-            for (int i = 0; i < 1000; i++)
+            for (var i = 0; i < 1000; i++)
             {
-                TaskPriority taskPriority = TaskPriority.Lowest;
+                var taskPriority = TaskPriority.Lowest;
                 if(i % 10 == 0)
                 {
                     taskPriority = TaskPriority.Highest;

SystemExtensions.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.31005.135
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31815.197
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SystemExtensions.NetStandard", "SystemExtensions.NetStandard\SystemExtensions.NetStandard.csproj", "{4CE9E55C-6016-4631-B8D4-4D763DD05F23}"
 EndProject
@@ -14,6 +14,20 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SystemExtensions.NetStandar
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SystemExtensions.NetStandard.DependencyInjection.Tests", "SystemExtensions.DependencyInjection.Tests\SystemExtensions.NetStandard.DependencyInjection.Tests.csproj", "{1AFA1EEF-CEBA-4046-8466-C9B52979B7DA}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SystemExtensions.NetStandard.Security", "SystemExtensions.NetStandard.Security\SystemExtensions.NetStandard.Security.csproj", "{BFC5BEE7-2569-45EA-9713-CDB32EED57AA}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SystemExtensions.NetStandard.Security.Tests", "SystemExtensions.NetStandard.Security.Tests\SystemExtensions.NetStandard.Security.Tests.csproj", "{341ECE0F-A8DD-49A0-AE3D-B28D72E85130}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SystemExtensions.NetCore", "SystemExtensions.NetCore\SystemExtensions.NetCore.csproj", "{9E6EBBF0-671B-4941-A72B-2CA60C882038}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = ".github", ".github", "{BBA334F6-779A-4A45-8BF3-EA321D0D12CF}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "workflows", "workflows", "{52962B0C-BB5F-4211-A70C-801D0A73CACC}"
+	ProjectSection(SolutionItems) = preProject
+		.github\workflows\cd.yaml = .github\workflows\cd.yaml
+		.github\workflows\ci.yaml = .github\workflows\ci.yaml
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -36,10 +50,25 @@ Global
 		{1AFA1EEF-CEBA-4046-8466-C9B52979B7DA}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{1AFA1EEF-CEBA-4046-8466-C9B52979B7DA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{1AFA1EEF-CEBA-4046-8466-C9B52979B7DA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BFC5BEE7-2569-45EA-9713-CDB32EED57AA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BFC5BEE7-2569-45EA-9713-CDB32EED57AA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BFC5BEE7-2569-45EA-9713-CDB32EED57AA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BFC5BEE7-2569-45EA-9713-CDB32EED57AA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{341ECE0F-A8DD-49A0-AE3D-B28D72E85130}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{341ECE0F-A8DD-49A0-AE3D-B28D72E85130}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{341ECE0F-A8DD-49A0-AE3D-B28D72E85130}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{341ECE0F-A8DD-49A0-AE3D-B28D72E85130}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9E6EBBF0-671B-4941-A72B-2CA60C882038}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9E6EBBF0-671B-4941-A72B-2CA60C882038}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9E6EBBF0-671B-4941-A72B-2CA60C882038}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9E6EBBF0-671B-4941-A72B-2CA60C882038}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{52962B0C-BB5F-4211-A70C-801D0A73CACC} = {BBA334F6-779A-4A45-8BF3-EA321D0D12CF}
+	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {BFA90E90-BD97-40AD-B19E-C723E504369A}
 	EndGlobalSection