diff --git a/lib/csharp/src/Thrift.45.csproj b/lib/csharp/src/Thrift.45.csproj
index 4e28b25..146e7f8 100644
--- a/lib/csharp/src/Thrift.45.csproj
+++ b/lib/csharp/src/Thrift.45.csproj
@@ -46,6 +46,12 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>thrift.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -118,6 +124,9 @@
     <Folder Include="Server\Collections\" />
     <Folder Include="Server\Protocol\" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="thrift.snk" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/lib/csharp/src/Thrift.csproj b/lib/csharp/src/Thrift.csproj
index a1a37ae..da69554 100644
--- a/lib/csharp/src/Thrift.csproj
+++ b/lib/csharp/src/Thrift.csproj
@@ -70,6 +70,12 @@
     <WarningLevel>4</WarningLevel>
     <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>thrift.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core">
@@ -150,8 +156,11 @@
       <Install>true</Install>
     </BootstrapperPackage>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="thrift.snk" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSHARP.Targets" />
   <ProjectExtensions>
     <VisualStudio AllowExistingFolder="true" />
   </ProjectExtensions>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/lib/csharp/src/thrift.snk b/lib/csharp/src/thrift.snk
new file mode 100644
index 0000000..97bc581
--- /dev/null
+++ b/lib/csharp/src/thrift.snk
Binary files differ
diff --git a/lib/netcore/Thrift/Thrift.csproj b/lib/netcore/Thrift/Thrift.csproj
index e806fed..6a2ccc3 100644
--- a/lib/netcore/Thrift/Thrift.csproj
+++ b/lib/netcore/Thrift/Thrift.csproj
@@ -14,6 +14,8 @@
     <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
     <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
     <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>thrift.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/lib/netcore/Thrift/thrift.snk b/lib/netcore/Thrift/thrift.snk
new file mode 100644
index 0000000..97bc581
--- /dev/null
+++ b/lib/netcore/Thrift/thrift.snk
Binary files differ
diff --git a/lib/netstd/Thrift/Thrift.csproj b/lib/netstd/Thrift/Thrift.csproj
index 70d9df3..46d530e 100644
--- a/lib/netstd/Thrift/Thrift.csproj
+++ b/lib/netstd/Thrift/Thrift.csproj
@@ -36,6 +36,9 @@
 
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>thrift.snk</AssemblyOriginatorKeyFile>
+    <DelaySign>false</DelaySign>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/lib/netstd/Thrift/thrift.snk b/lib/netstd/Thrift/thrift.snk
new file mode 100644
index 0000000..97bc581
--- /dev/null
+++ b/lib/netstd/Thrift/thrift.snk
Binary files differ