Add catalog signing for unsigned apphost template files#127888
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jesuszarate wants to merge 1 commit intodotnet:mainfrom
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Add catalog signing for unsigned apphost template files#127888jesuszarate wants to merge 1 commit intodotnet:mainfrom
jesuszarate wants to merge 1 commit intodotnet:mainfrom
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The apphost template files (apphost.exe, singlefilehost.exe, comhost.dll) are intentionally unsigned because the .NET SDK modifies them at build time via HostWriter.CreateAppHost(). However, the Visual Studio signing scan flags them as non-compliant. This change adds a catalog file (.cat) containing SHA256 hashes of the template files. The catalog is signed with MicrosoftDotNet500 via Arcade signing and shipped alongside the templates in the AppHostPack NuGet package and MSI. This provides integrity verification for VS signing compliance without breaking the SDK workflow. Fixes the VS signing scan finding for 54 apphost template PE files across .NET 8/9/10 architectures. Related: dotnet#3694
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Summary
The apphost template files (\�pphost.exe, \singlefilehost.exe, \comhost.dll) are intentionally unsigned because the .NET SDK modifies them at build time via \HostWriter.CreateAppHost(). However, the Visual Studio signing scan (SignVerify) flags them as non-compliant unsigned PE binaries.
This change adds a catalog file (.cat) containing SHA256 hashes of the template files. The catalog is signed with \MicrosoftDotNet500\ via Arcade signing and shipped alongside the templates in the AppHostPack NuGet package and MSI. This provides integrity verification for VS signing compliance without breaking the SDK workflow.
Changes
Context
Risk
Low — This is a purely additive change. The unsigned template files are not modified. The .cat\ file is a new artifact that provides integrity verification only. The target only runs on Windows builds.