Run Only signed powershell scripts from c#


I have a windows service that downloads a script and then runs it.

I’ve been trying to make my windows service more secure, making it accept only signed power-shell scripts.

I have ran the Set-ExecutionPolicy AllSigned command on the server, and this works in the windows power shell command prompt.

However, my code still runs both signed and unsigned scripts, even if the set-executionpolicy is set to restricted.

I have tried two approaches:

RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();

And another approach:

In both situations the code runs unsigned scripts as well.

Have I missed something?


I found the solution. The only way to restrict the code from running unsigned scripts was to check the scripts myself with Get-AuthenticodSignature:




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