diff --git a/Directory.Build.props b/Directory.Build.props
index 497a1e0e..b7ae9d12 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -5,4 +5,10 @@
 		<AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
 		<AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
 	</PropertyGroup>
+
+	<PropertyGroup Condition="Exists('$(MSBuildThisFileDirectory)/Sources/Key.snk')">
+		<SignAssembly>true</SignAssembly>
+		<AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)/Sources/Key.snk</AssemblyOriginatorKeyFile>
+	</PropertyGroup>
+
 </Project>
\ No newline at end of file
diff --git a/Sources/Key.snk b/Sources/Key.snk
new file mode 100644
index 00000000..e10e4889
Binary files /dev/null and b/Sources/Key.snk differ
diff --git a/Sources/Towel/Towel.csproj b/Sources/Towel/Towel.csproj
index b4391e08..33a43ac4 100644
--- a/Sources/Towel/Towel.csproj
+++ b/Sources/Towel/Towel.csproj
@@ -48,13 +48,31 @@
 			<DependentUpon>Omnitree.tt</DependentUpon>
 		</Compile>
 		<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
-			<_Parameter1>Towel_Testing</_Parameter1>
+			<_Parameter1>
+			Towel_Testing, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d7
+			40c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc95
+			0abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0f
+			c3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d
+			872ad2bb
+		</_Parameter1>
 		</AssemblyAttribute>
 		<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
-			<_Parameter1>Towel_Benchmarking</_Parameter1>
+			<_Parameter1>
+			Towel_Benchmarking, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d7
+			40c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc95
+			0abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0f
+			c3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d
+			872ad2bb
+		</_Parameter1>
 		</AssemblyAttribute>
 		<AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleToAttribute">
-			<_Parameter1>Towel_Generating</_Parameter1>
+			<_Parameter1>
+			Towel_Generating, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d7
+			40c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc95
+			0abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0f
+			c3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d
+			872ad2bb
+		</_Parameter1>
 		</AssemblyAttribute>
 	</ItemGroup>
 </Project>