Release 2023.0.0 (#1201)

* Assets/logos (#782) * Added logo assets * Added PNG 1260x640 with white border Co-authored-by: 103filgualan <[email protected]> * OPENSSH KeyReader for more keys (#614) * OPENSSH KeyReader for more keys Add support to parse OpenSSH Keys with ECDSA 256/384/521 and RSA. https://github.com/openssh/openssh-portable/blob/master/PROTOCOL.key Change-Id: Iaa9cce0f2522e5fee377a82cb252f81f0b7cc563 * Fix ED25519Key KeyLength * Fix ED25519 PubKey-auth LeadingZeros of BigInteger-Conversion have to be removed before sending the Key. * Add interface to SftpFile #120 (#812) * Create ISftpFile interface. SftpFile sealed. Return ISftpFile from SftpClient instead of SftpFile. Make ISftpClient interface disposable. Co-authored-by: Wojciech Swieboda <[email protected]> * Start MessageListener with ThreadAbstraction.ExecuteThreadLongRunning (#902) * Fix Thread pool exhaustion due to MessageListener running on ThreadPool * Mark long running thread as background * Add async support to SftpClient and SftpFileStream (#819) * Add FEATURE_TAP and net472 target * Add TAP async support to SftpClient and SftpFileStream * Add async support to DnsAbstraction and SocketAbstraction * Add async support to *Connector and refactor the hierarchy * Add ConnectAsync to BaseClient * Add CODEOWNERS file. * Fix virus false-positive by Defender on Renci.SSHNet.Tests.dll (#867) Co-authored-by: Pedro Fonseca <[email protected]> * Add unit tests for task-based asynchronous API (#906) * Fix runtime and culture dependant tests. * Set C# 7.3 in Tests.csproj to limit intellisense's suggestions under different targets * Add SftpClientTest.*Async * Add SftpFileStreamTest_OpenAsync_* * Add SftpFileStreamTest_WriteAsync_* * Add SftpFileStreamTest_ReadAsync_* * Align AppVeyor script with Test project target frameworks * correct 'Documenation' to 'Documentation' (#838) in the documentation's window title * Agent auth and Keygen (#794) * Allow to set PrivateKeyFile Key directly So you can add your own Key-Classes to SSH.NET * Add ED25519 ctor for just pub key part. * Make ECDSA Key Bits accessible You cant export imported CngKeys. To be able to export them to agent or Key-Files make the private bits also accessible. * Better NETFRAMEWORK vs NETSTANDARD handling * Add Comment Property to Key * Add IPrivateKeySource So Extension can add own PrivateKeyFiles, e.g. PuttyKeyFile. * Use cryptographically secure random number generator. Fixes CVE-2022-29245. * Remove unused import. * Add IBaseClient for BaseClient and ISftpClient to inherit from (#975) Add IBaseClient for BaseClient and ISftpClient to inherit from * fix typo (#999) * Fix Seek Operations in SftpFileStream (#910) * Fix offset operations in SftpFileStream.Seek * Fix seek exception message and add default case for invalid seek origin * Use named params when throwing ArgumentException * Add tests for seeking from end of file * Add back copyright to license. (#1060) Fixes #1059. * Removing old target frameworks (#1109) Remove support for legacy / deprecated target frameworks while adding support for .NET 6.0 (and higher). The supported target frameworks are now: * .NETFramework 4.6.2 (and higher) * .NET Standard 2.0 * .NET 6.0 (and higher) * Remove old features [Part 1] (#1117) Remove obsolete feature switches (now that we've remove support for legacy target frameworks) and remove corresponding conditional code. * Remove FEATURE_DIRECTORYINFO_ENUMERATEFILES (#1119) * Remove FEATURE_DIRECTORYINFO_ENUMERATEFILES * Add exception documentation * Fix some (lots of) issues reported by analyzers. (#1125) Fix some (lots of) issues reported by analyzers. * Round 2 of analyzer fixes and general cleanup. (#1132) * Analyzer fixes round 3. (#1135) * Replace Array<T>.Empty with Array.Empty<T>() (#1137) * Replace IsNullOrWhiteSpace extension (#1142) * Use License Expression for NuGet Package licenseUrl is deprecated, see NuGet/Announcements#32 * Integration tests * Remove todos * Update CODEOWNERS * Use correct SSH.NET * ListDirectoryAsync return IAsyncEnumerable (#1126) * ListDirectoryAsync return IAsyncEnumerable * Fix documentation * Update README.md * Fix * Add Sftp ListDirectoryAsync test * Revert * Integration tests for ListDirectoryAsync with IAsyncEnumerable * Fix the assembly resolution build warning (#1165) * Delete performance/longrunning tests (#1143) Co-authored-by: Wojciech Nagórski <[email protected]> * Move Integration tests (#1173) * Renci.SshNet.IntegrationTests * Renci.SshNet.TestTools.OpenSSH * Move integration tests to main repo * Move old tests to new integration tests * Move old integration tests to new integration tests * Move more tests * Move authentication tests * Move SshClientTests * Fix some tests * Remove duplicated test * Poc of ProcessDisruptor * Rename * Some fixes * Remove performance tests * Small improvements * Add a benchmarks project (#1151) * Add a benchmarks project * Small improvements --------- Co-authored-by: Wojciech Nagórski <[email protected]> * Use ExceptionDispatchInfo to retain call stack in Session.WaitOnHandle() (#936) * Use ExceptionDispatchInfo to retain call stack in Session.WaitOnHandle() * merge * Update src/Renci.SshNet/Session.cs Co-authored-by: Rob Hague <[email protected]> --------- Co-authored-by: Wojciech Nagórski <[email protected]> Co-authored-by: Rob Hague <[email protected]> * Support SHA256 fingerprints for host key validation (#1098) * Add tests for HostKeyEventArgs * Add SHA256 fingerprint support * Add support for RSA SHA-2 public key algorithms (#1177) * Abstract out the hash algorithm from RsaDigitalSignature * Add integration tests * Add DigitalSignature property to KeyHostAlgorithm * Add IHostAlgorithmsProvider interface * Verify the host signature * Fix HostKeyEventArgsTest after merge * Remove PubkeyAcceptedAlgorithms ssh-rsa * Add test coverage for RSA keys in PrivateKeyFile * Obsolete IPrivateKeySource --------- Co-authored-by: Wojciech Nagórski <[email protected]> * Improvements after #1177 (#1180) * Use ExceptionDispatchInfo in more places (#1182) Co-authored-by: Wojciech Nagórski <[email protected]> * Try to "fix" the flaky test (#1185) * Enable DSA tests (#1181) Co-authored-by: Wojciech Nagórski <[email protected]> * FingerPrints (#1186) * Use OS-agnostic socket error codes to allow tests run on different OSes (#1179) SocketErrorCode is OS agnostic, ErrorCode is OS specific. On Windows ErrorCode = (int) SocketErrorCode, but on Mac and Unix it is not. For example ExitCode for HostNotFound (11001) on Windows is 11001, on Mac & Unix is -131073. So testing for ExitCode == 11001 fails on Mac & Unix. Co-authored-by: Wojciech Nagórski <[email protected]> * Fix for channel session semaphore from thread blocking (#1071) * Merging fix from @clivetong into our own SSH.NET fork - The following article describes some of the issues with the double check lock that we have seen issues with: https://www.sudhanshutheone.com/posts/double-check-lock-csharp * Merging fix from @clivetong into our own SSH.NET fork - The following article describes some of the issues with the double check lock that we have seen issues with: https://www.sudhanshutheone.com/posts/double-check-lock-csharp * Update Channel to fix AppVeyor failure (field should be readonly) * Update ISftpClient for #120 (#1193) * Implement set last write and access time (#1194) * Add/migrate hmac+cipher integration tests (#1189) * Add/migrate hmac+cipher integration tests * fix integration tests --------- Co-authored-by: Wojciech Nagórski <[email protected]> * Update tests for SetLastAccessTime(Utc) to also verify the time component and the Kind of the DateTime value returned by GetLastAccessTime(Utc). (#1198) --------- Co-authored-by: Filippo Gualandi <[email protected]> Co-authored-by: 103filgualan <[email protected]> Co-authored-by: Stefan Rinkes <[email protected]> Co-authored-by: wxtsxt <[email protected]> Co-authored-by: Wojciech Swieboda <[email protected]> Co-authored-by: Igor Milavec <[email protected]> Co-authored-by: drieseng <[email protected]> Co-authored-by: Pedro Fonseca <[email protected]> Co-authored-by: Pedro Fonseca <[email protected]> Co-authored-by: Maximiliano Jabase <[email protected]> Co-authored-by: Owen Krueger <[email protected]> Co-authored-by: Masuri <[email protected]> Co-authored-by: LemonPi314 <[email protected]> Co-authored-by: Gert Driesen <[email protected]> Co-authored-by: Rob Hague <[email protected]> Co-authored-by: Rob Hague <[email protected]> Co-authored-by: Marius Thesing <[email protected]> Co-authored-by: Dāvis Mošenkovs <[email protected]> Co-authored-by: Dmitry Tsarevich <[email protected]> Co-authored-by: Patrick Yates <[email protected]>
sshnet · Oct 10, 2023 · 2bbfee4 · 2bbfee4
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diff --git a/.editorconfig b/.editorconfig
diff --git a/.gitignore b/.gitignore
@@ -22,3 +22,6 @@ project.lock.json
 
 # Build outputs
 build/target/
+
+# Benchmark results
+BenchmarkDotNet.Artifacts/
diff --git a/CODEOWNERS b/CODEOWNERS
@@ -0,0 +1 @@
+*   @drieseng @WojciechNagorski
diff --git a/Directory.Build.props b/Directory.Build.props
@@ -0,0 +1,44 @@
+<Project>
+    <Import Project="$(MSBuildThisFileFullPath).user" Condition="Exists('$(MSBuildThisFileFullPath).user')" />
+
+    <!--
+        Assembly Info properties that apply to all projects/assemblies.
+    -->
+    <PropertyGroup>
+        <SignAssembly>true</SignAssembly>
+        <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)src\Renci.SshNet.snk</AssemblyOriginatorKeyFile>
+        <GenerateDocumentationFile>true</GenerateDocumentationFile>
+        <LangVersion>latest</LangVersion>
+        <WarningLevel>9999</WarningLevel>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+        <AutoGenerateBindingRedirects>false</AutoGenerateBindingRedirects>
+    </PropertyGroup>
+
+    <!--
+        Code analysis properties.
+    -->
+    <PropertyGroup>
+        <EnableNETAnalyzers>false</EnableNETAnalyzers>
+        <AnalysisLevel>preview-All</AnalysisLevel>
+        <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
+    </PropertyGroup>
+
+    <!--
+        Add the stylecop config to each project.
+    -->
+    <ItemGroup>
+        <AdditionalFiles Include="..\..\stylecop.json" Link="stylecop.json" />
+    </ItemGroup>
+
+    <!--
+        Use fixed version of analyzers.
+    -->
+    <ItemGroup>
+        <!--
+        <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0-preview1.23165.1" PrivateAssets="all" />
+        <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.435" PrivateAssets="all" />
+        <PackageReference Include="Meziantou.Analyzer" Version="2.0.54" PrivateAssets="all" />
+        <PackageReference Include="SonarAnalyzer.CSharp" Version="8.55.0.65544" PrivateAssets="all" />
+        -->        
+    </ItemGroup>
+</Project>
diff --git a/LICENSE b/LICENSE
@@ -1,5 +1,7 @@
 The MIT License (MIT)
 
+Copyright (c) Renci, Oleg Kapeljushnik, Gert Driesen and contributors
+
 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

diff --git a/README.md b/README.md
@@ -80,7 +80,7 @@ the missing test once you figure things out.  🤓
 * RSA in OpenSSL PEM and ssh.com format
 * DSA in OpenSSL PEM and ssh.com format
 * ECDSA 256/384/521 in OpenSSL PEM format
-* ED25519 in OpenSSH key format
+* ECDSA 256/384/521, ED25519 and RSA in OpenSSH key format
 
 Private keys can be encrypted using one of the following cipher methods:
 * DES-EDE3-CBC
@@ -97,6 +97,8 @@ Private keys can be encrypted using one of the following cipher methods:
 * ecdsa-sha2-nistp256
 * ecdsa-sha2-nistp384
 * ecdsa-sha2-nistp521
+* rsa-sha2-512
+* rsa-sha2-256
 * ssh-rsa
 * ssh-dss
 
@@ -116,15 +118,9 @@ Private keys can be encrypted using one of the following cipher methods:
 
 ## Framework Support
 **SSH.NET** supports the following target frameworks:
-* .NET Framework 3.5
-* .NET Framework 4.0 (and higher)
-* .NET Standard 1.3
-* .NET Standard 2.0
-* Silverlight 4
-* Silverlight 5
-* Windows Phone 7.1
-* Windows Phone 8.0
-* Universal Windows Platform 10
+* .NETFramework 4.6.2 (and higher)
+* .NET Standard 2.0 and 2.1
+* .NET 6 (and higher)
 
 ## Usage
 
@@ -149,45 +145,18 @@ using (var client = new SftpClient(connectionInfo))
 Establish a SSH connection using user name and password, and reject the connection if the fingerprint of the server does not match the expected fingerprint:
 
 ```cs
-byte[] expectedFingerPrint = new byte[] {
-                                            0x66, 0x31, 0xaf, 0x00, 0x54, 0xb9, 0x87, 0x31,
-                                            0xff, 0x58, 0x1c, 0x31, 0xb1, 0xa2, 0x4c, 0x6b
-                                        };
+string expectedFingerPrint = "LKOy5LvmtEe17S4lyxVXqvs7uPMy+yF79MQpHeCs/Qo";
 
 using (var client = new SshClient("sftp.foo.com", "guest", "pwd"))
 {
     client.HostKeyReceived += (sender, e) =>
         {
-            if (expectedFingerPrint.Length == e.FingerPrint.Length)
-            {
-                for (var i = 0; i < expectedFingerPrint.Length; i++)
-                {
-                    if (expectedFingerPrint[i] != e.FingerPrint[i])
-                    {
-                        e.CanTrust = false;
-                        break;
-                    }
-                }
-            }
-            else
-            {
-                e.CanTrust = false;
-            }
+            e.CanTrust = expectedFingerPrint.Equals(e.FingerPrintSHA256);
         };
     client.Connect();
 }
 ```
 
-## Building SSH.NET
-
-Software                          | net35 | net40 | netstandard1.3 | netstandard2.0 | sl4 | sl5 | wp71 | wp8 | uap10.0 |
---------------------------------- | :---: | :---: | :------------: | :------------: | :-: | :-: | :--: | :-: | :-----: |
-Windows Phone SDK 8.0             |       |       |                |                | x   | x   | x    | x   |
-Visual Studio 2012 Update 5       | x     | x     |                |                | x   | x   | x    | x   |
-Visual Studio 2015 Update 3       | x     | x     |                |                |     | x   |      | x   | x
-Visual Studio 2017                | x     | x     | x              | x              |     |     |      |     | 
-Visual Studio 2019                | x     | x     | x              | x              |     |     |      |     | 
-
 ## Supporting SSH.NET
 
 Do you or your company rely on **SSH.NET** in your projects? If you want to encourage us to keep on going and show us that you appreciate our work, please consider becoming a [sponsor](https://github.com/sponsors/sshnet) through GitHub Sponsors.
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,14 +1,14 @@
-os: Visual Studio 2019
+os: Visual Studio 2022
 
 before_build:
-  - nuget restore src\Renci.SshNet.VS2019.sln
+  - nuget restore src\Renci.SshNet.sln
 
 build:
-  project: src\Renci.SshNet.VS2019.sln
+  project: src\Renci.SshNet.sln
   verbosity: minimal
 
 test_script:
 - cmd: >-
-    vstest.console /logger:Appveyor src\Renci.SshNet.Tests\bin\Debug\net40\Renci.SshNet.Tests.dll /TestCaseFilter:"TestCategory!=integration&TestCategory!=LongRunning"
-
-    vstest.console /logger:Appveyor src\Renci.SshNet.Tests\bin\Debug\net35\Renci.SshNet.Tests.dll /TestCaseFilter:"TestCategory!=integration&TestCategory!=LongRunning"
+    vstest.console /logger:Appveyor src\Renci.SshNet.Tests\bin\Debug\net462\Renci.SshNet.Tests.dll /TestCaseFilter:"TestCategory!=integration" --blame
+    
+    vstest.console /logger:Appveyor src\Renci.SshNet.Tests\bin\Debug\net7.0\Renci.SshNet.Tests.dll /TestCaseFilter:"TestCategory!=integration" --blame
diff --git a/build/build.proj b/build/build.proj
@@ -8,86 +8,41 @@
 		<MSBuildTasksPackageId>MSBuildTasks</MSBuildTasksPackageId>
 		<MSBuildTasksPackageVersion>1.5.0.214</MSBuildTasksPackageVersion>
 	</PropertyGroup>
-
-	<ItemGroup>
-		<VisualStudioVersionClassic Include="2012">
-			<SolutionFile>$(MSBuildThisFileDirectory)..\src\Renci.SshNet.VS2012.sln</SolutionFile>
-			<ToolsVersion>14.0</ToolsVersion>
-			<VisualStudioVersion>14.0</VisualStudioVersion>
-		</VisualStudioVersionClassic>
-		<VisualStudioVersionClassic Include="2015">
-			<SolutionFile>$(MSBuildThisFileDirectory)..\src\Renci.SshNet.VS2015.sln</SolutionFile>
-			<ToolsVersion>14.0</ToolsVersion>
-			<VisualStudioVersion>14.0</VisualStudioVersion>
-		</VisualStudioVersionClassic>
-	</ItemGroup>
-
-	<ItemGroup>
-		<VisualStudioVersionModern Include="2019">
-			<SolutionFile>$(MSBuildThisFileDirectory)..\src\Renci.SshNet.VS2019.sln</SolutionFile>
-			<VisualStudioVersion>16.0</VisualStudioVersion>
-		</VisualStudioVersionModern>
-	</ItemGroup>
 
 	<ItemGroup>
-		<TargetFrameworkClassic Include="Windows Phone Silverlight 7.1">
-			<OutputDirectory>Renci.SshNet.WindowsPhone\bin\$(Configuration)</OutputDirectory>
-			<Moniker>wp71</Moniker>
-		</TargetFrameworkClassic>
-		<TargetFrameworkClassic Include="Windows Phone Silverlight 8.0">
-			<OutputDirectory>Renci.SshNet.WindowsPhone8\bin\$(Configuration)</OutputDirectory>
-			<Moniker>wp8</Moniker>
-		</TargetFrameworkClassic>
-		<TargetFrameworkClassic Include="Silverlight 4">
-			<OutputDirectory>Renci.SshNet.Silverlight\bin\$(Configuration)</OutputDirectory>
-			<Moniker>sl4</Moniker>
-		</TargetFrameworkClassic>
-		<TargetFrameworkClassic Include="Silverlight 5">
-			<OutputDirectory>Renci.SshNet.Silverlight5\bin\$(Configuration)</OutputDirectory>
-			<Moniker>sl5</Moniker>
-		</TargetFrameworkClassic>
-		<TargetFrameworkClassic Include="Universal Windows Platform 10">
-			<OutputDirectory>Renci.SshNet.UAP10\bin\$(Configuration)</OutputDirectory>
-			<Moniker>uap10</Moniker>
-		</TargetFrameworkClassic>
+		<VisualStudioVersionModern Include="2022">
+			<SolutionFile>$(MSBuildThisFileDirectory)..\src\Renci.SshNet.sln</SolutionFile>
+			<VisualStudioVersion>17.0</VisualStudioVersion>
+		</VisualStudioVersionModern>
 	</ItemGroup>
 
 	<ItemGroup>
-		<TargetFrameworkModern Include=".NET Framework 3.5">
-			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\net35</OutputDirectory>
-			<Moniker>net35</Moniker>
-		</TargetFrameworkModern>
-		<TargetFrameworkModern Include=".NET Framework 4.0">
-			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\net40</OutputDirectory>
-			<Moniker>net40</Moniker>
-		</TargetFrameworkModern>
-		<TargetFrameworkModern Include=".NETStandard 1.3">
-			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\netstandard1.3</OutputDirectory>
-			<Moniker>netstandard1.3</Moniker>
+		<TargetFrameworkModern Include=".NET Framework 4.6.2">
+			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\net462</OutputDirectory>
+			<Moniker>net462</Moniker>
 		</TargetFrameworkModern>
 		<TargetFrameworkModern Include=".NETStandard 2.0">
 			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\netstandard2.0</OutputDirectory>
 			<Moniker>netstandard2.0</Moniker>
 		</TargetFrameworkModern>
+		<TargetFrameworkModern Include=".NETStandard 2.1">
+			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\netstandard2.1</OutputDirectory>
+			<Moniker>netstandard2.1</Moniker>
+		</TargetFrameworkModern>
+		<TargetFrameworkModern Include=".NET 6.0">
+			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\net6.0</OutputDirectory>
+			<Moniker>net6.0</Moniker>
+		</TargetFrameworkModern>
+		<TargetFrameworkModern Include=".NET 7.0">
+			<OutputDirectory>Renci.SshNet\bin\$(Configuration)\net7.0</OutputDirectory>
+			<Moniker>net7.0</Moniker>
+		</TargetFrameworkModern>
 	</ItemGroup>
-
-	<Target Name="CleanClassic" DependsOnTargets="CleanSolutionClassic">
-		<RemoveDir Directories="$(MSBuildThisFileDirectory)target"/>
-	</Target>
-
+
 	<Target Name="CleanModern" DependsOnTargets="CleanSolutionModern">
 		<RemoveDir Directories="$(MSBuildThisFileDirectory)target"/>
 	</Target>
 
-	<Target Name="CleanSolutionClassic" Outputs="%(VisualStudioVersionClassic.Identity)">
-		<ItemGroup>
-			<ProjectToBuild Remove="@(ProjectToBuild)"/>
-			<ProjectToBuild Include="%(VisualStudioVersionClassic.SolutionFile)">
-				<Properties>Configuration=Release;VisualStudioVersion=%(VisualStudioVersionClassic.VisualStudioVersion)</Properties>
-			</ProjectToBuild>
-		</ItemGroup>
-		<MSBuild Projects="@(ProjectToBuild)" ToolsVersion="%(VisualStudioVersionClassic.ToolsVersion)" Targets="Clean"/>
-	</Target>
 
 	<Target Name="CleanSolutionModern" Outputs="%(VisualStudioVersionModern.Identity)">
 		<ItemGroup>
@@ -99,26 +54,11 @@
 		<MSBuild Projects="@(ProjectToBuild)" Targets="Clean"/>
 	</Target>
 
-	<Target Name="RestoreNuGetPackagesClassic" DependsOnTargets="DownloadNuGet" Outputs="%(VisualStudioVersionClassic.Identity)">
-		<Message Text="Restoring nuget packages for '%(VisualStudioVersionClassic.SolutionFile)'..." Importance="High"/>
-		<Exec Command="$(NuGetExe) restore &quot;%(VisualStudioVersionClassic.SolutionFile)&quot;"/>
-	</Target>
-
 	<Target Name="RestoreNuGetPackagesModern" DependsOnTargets="DownloadNuGet" Outputs="%(VisualStudioVersionModern.Identity)">
 		<Message Text="Restoring nuget packages for '%(VisualStudioVersionModern.SolutionFile)'..." Importance="High"/>
 		<Exec Command="$(NuGetExe) restore &quot;%(VisualStudioVersionModern.SolutionFile)&quot;"/>
 	</Target>
-
-	<Target Name="BuildClassic" DependsOnTargets="RestoreNuGetPackagesClassic" Outputs="%(VisualStudioVersionClassic.Identity)">
-		<ItemGroup>
-			<ProjectToBuild Remove="@(ProjectToBuild)"/>
-			<ProjectToBuild Include="%(VisualStudioVersionClassic.SolutionFile)">
-				<Properties>Configuration=Release;VisualStudioVersion=%(VisualStudioVersionClassic.VisualStudioVersion)</Properties>
-			</ProjectToBuild>
-		</ItemGroup>
-		<MSBuild Projects="@(ProjectToBuild)" ToolsVersion="%(VisualStudioVersionClassic.ToolsVersion)" Targets="Rebuild"/>
-	</Target>
-
+
 	<Target Name="BuildModern" DependsOnTargets="RestoreNuGetPackagesModern" Outputs="%(VisualStudioVersionModern.Identity)">
 		<ItemGroup>
 			<ProjectToBuild Remove="@(ProjectToBuild)"/>
@@ -131,12 +71,7 @@
 
 	<Target Name="Package" DependsOnTargets="CreateNuGetPackage;CreateBinPackage;GenerateHelpFile"/>
 
-	<Target Name="ValidatePackage" DependsOnTargets="ValidatePackageClassic;ValidatePackageModern"/>
-
-	<Target Name="ValidatePackageClassic" DependsOnTargets="CheckNuGetPackageDirectory" Outputs="%(TargetFrameworkClassic.Identity)">
-		<Error Text="The 'Renci.SshNet.dll' file is not available for %(TargetFrameworkClassic.Identity) in $(NuGetPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)." Condition="!Exists('$(NuGetPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)\Renci.SshNet.dll')"/>
-		<Error Text="The 'Renci.SshNet.xml' file is not available for %(TargetFrameworkClassic.Identity) in $(NuGetPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)." Condition="!Exists('$(NuGetPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)\Renci.SshNet.xml')"/>
-	</Target>
+	<Target Name="ValidatePackage" DependsOnTargets="ValidatePackageModern"/>
 
 	<Target Name="ValidatePackageModern" DependsOnTargets="CheckNuGetPackageDirectory" Outputs="%(TargetFrameworkModern.Identity)">
 		<Error Text="The 'Renci.SshNet.dll' file is not available for %(TargetFrameworkModern.Identity) in $(NuGetPackageDirectory)\lib\%(TargetFrameworkModern.Moniker)." Condition="!Exists('$(NuGetPackageDirectory)\lib\%(TargetFrameworkModern.Moniker)\Renci.SshNet.dll')"/>
@@ -153,16 +88,6 @@
 		<Move SourceFiles="$(MSBuildThisFileDirectory)target\help\SshNet.Help.chm" DestinationFiles="$(MSBuildThisFileDirectory)target\SSH.NET-$(ReleaseVersion)-help.chm"/>
 	</Target>
 
-	<Target Name="PreparePackageClassic" DependsOnTargets="BuildClassic;CheckNuGetPackageDirectory;CheckBinaryZipPackageDirectory" Outputs="%(TargetFrameworkClassic.Identity)">
-		<ItemGroup>
-			<BuildOutput Remove="@(BuildOutput)"/>
-			<BuildOutput Include="$(MSBuildThisFileDirectory)..\src\%(TargetFrameworkClassic.OutputDirectory)\Renci.SshNet.dll"/>
-			<BuildOutput Include="$(MSBuildThisFileDirectory)..\src\%(TargetFrameworkClassic.OutputDirectory)\Renci.SshNet.xml"/>
-		</ItemGroup>
-		<Copy SourceFiles="@(BuildOutput)" DestinationFolder="$(NuGetPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)"/>
-		<Copy SourceFiles="@(BuildOutput)" DestinationFolder="$(BinPackageDirectory)\lib\%(TargetFrameworkClassic.Moniker)"/>
-	</Target>
-
 	<Target Name="PreparePackageModern" DependsOnTargets="BuildModern;CheckNuGetPackageDirectory" Outputs="%(TargetFrameworkModern.Identity)">
 		<ItemGroup>
 			<BuildOutput Remove="@(BuildOutput)"/>

diff --git a/build/nuget/SSH.NET.nuspec b/build/nuget/SSH.NET.nuspec
@@ -6,7 +6,7 @@
         <title>SSH.NET</title>
         <authors>Renci</authors>
         <owners>olegkap,drieseng</owners>
-        <licenseUrl>https://github.com/sshnet/SSH.NET/blob/master/LICENSE</licenseUrl>
+        <license type="expression">MIT</license>
         <projectUrl>https://github.com/sshnet/SSH.NET/</projectUrl>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>SSH.NET is a Secure Shell (SSH) library for .NET, optimized for parallelism and with broad framework support.</description>
@@ -16,37 +16,18 @@
         <language>en-US</language>
         <tags>ssh scp sftp</tags>
         <dependencies>
-          <group targetFramework="net35" />
-          <group targetFramework="net40" />
-          <group targetFramework="netstandard1.3">
-            <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
-            <dependency id="System.Diagnostics.TraceSource" version="4.3.0" />
-            <dependency id="System.Net.NameResolution" version="4.3.0" />
-            <dependency id="System.Net.Sockets" version="4.3.0" />
-            <dependency id="System.Threading.Thread" version="4.3.0" />
-            <dependency id="System.Threading.ThreadPool" version="4.3.0" />
-            <dependency id="System.Threading.Timer" version="4.3.0" />
-            <dependency id="System.Xml.XmlDocument" version="4.3.0" />
-            <dependency id="System.Xml.XPath.XmlDocument" version="4.3.0" />
-          </group>
+          <group targetFramework="net462" />
           <group targetFramework="netstandard2.0">
             <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
-          </group>
-          <group targetFramework="sl4">
-            <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
-          </group>
-          <group targetFramework="sl5">
-            <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
-          </group>
-          <group targetFramework="wp71">
+          </group>          
+          <group targetFramework="netstandard2.1">
             <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
           </group>
-          <group targetFramework="wp8">
+          <group targetFramework="net6.0">
             <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
           </group>
-          <group targetFramework="uap10.0">
+          <group targetFramework="net7.0">
             <dependency id="SshNet.Security.Cryptography" version="[1.3.0]" />
-            <dependency id="System.Xml.XPath.XmlDocument" version="4.3.0" />
           </group>
         </dependencies>
     </metadata>