Requires makecert.exe. Download and install platform SDK for windows.
http://www.hanselman.com/blog/SigningPowerShellScripts.aspx
Open a command prompt
C:
CD C:\Program Files\Microsoft SDKs\Windows\v7.0\Bin
makecert -n "CN=PowerShell Local Certificate Root" -a sha1 -eku 1.3.6.1.5.5.7.3.3 -r -sv root.pvk root.cer -ss Root -sr localMachine
makecert -pe -n "CN=PowerShell User" -ss MY -a sha1 -eku 1.3.6.1.5.5.7.3.3 -iv root.pvk -ic root.cer
Get-ChildItem cert:\CurrentUser\My -codesignSet-ExecutionPolicy AllSigned Set-AuthenticodeSignature -Certificate @(Get-ChildItem cert:\CurrentUser\My -codesigning)[0] -FilePath C:\script.ps1
add this function to Microsoft.PowerShell_profile.ps1
function Sign-Script(
[string] $file=$(throw '$file is required'))
{
$cert = @(gci cert:\currentuser\my -codesigning)[0]
Set-AuthenticodeSignature $file $cert
}
Use function to sign a script
Sign-Script .\Microsoft.PowerShell_profile.ps1
get-command sign-script
get-help sign-script