How to work around the PFX signing not supported error when publishing .NET Core

Question

I've been trying to sign assemblies with a PFX file. All worked fine, I accessed Properties/Signing at Visual Studio yet whenever I run the dotnet publish command, I get this error:

C:\Program Files\dotnet\sdk\2.1.201\Microsoft.Common.CurrentVersion.targets(3210,5): error PFX signing not supported on .NET Core

I've been looking for a way to work around this, yet with no luck so far.

Answer 1

So I figured I should go with SNK signing instead of PFX, considering it's no longer supported by PFX.

Answer 2

1. Export public key from the PFX: sn -p key.pfx key.pub
2. Enable delayed signing for your assembly by adding <DelaySign>true</DelaySign> to the project file or by AssemblyDelaySignAttribute. Use a public key from step 1 instead of the PFX for signing.
3. Re-sign your assembly after build: sn -R assembly.dll key.pfx

https://learn.microsoft.com/en-us/dotnet/framework/tools/sn-exe-strong-name-tool