How To Sign A Script With PowerShell

This tutorial will discuss how to sign a PowerShell script. I will first configure the PowerShell Execution Policy to require signed scripts, then demonstrate the behavior when an unsigned script is executed. I will then use an X509 certificate to sign and validate a PowerShell script.

When you start enforcing signed scripts in a production environment, it’s important that you leverage a CI/CD platform to automate this process and keep your certificate in a safe place. It would not be recommended to manually sign certificates at scale. Enforcing signing can drastically improve security posture of your infrastructure, especially when it’s seamlessly integrated with your automation platform.

Prerequisites include: - Any powershell script to be signed - Any x509 certificate