diff --git a/BsDiff.snk b/BsDiff.snk
new file mode 100644
index 0000000..bab5426
Binary files /dev/null and b/BsDiff.snk differ
diff --git a/Directory.Build.props b/Directory.Build.props
index bd4ba5f..2439eae 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -21,6 +21,8 @@
     <IsPackable>false</IsPackable>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)BsDiff.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/BsDiff/BsDiff.csproj b/src/BsDiff/BsDiff.csproj
index ba2c7cd..376a815 100644
--- a/src/BsDiff/BsDiff.csproj
+++ b/src/BsDiff/BsDiff.csproj
@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <InternalsVisibleTo Include="BsDiff.Tests" />
+    <InternalsVisibleTo Include="BsDiff.Tests" Key="0024000004800000940000000602000000240000525341310004000001000100c5c13d681a79e257114a10a41004c6b1e84dd1c8724baaa9762b4dd0cf02952f79e2d38e59822bd05298aa6d1e14af2228b083c0622a14977e0a6b105e21f51386d9769807064218f1cb2df187d146fc8e5c7b6e30d3e03a369f83cd49df80164bcba605d45727a7fa0d96d7cfefdff05bb7ffde5a6146e8d8fce5b1d90a48c5" />
   </ItemGroup>
 
   <ItemGroup>