You can use Get-PfxCertificate to load digital certificates from PFX files, and then use the certificate to sign script files, for example:
$pfxpath = 'C:\PathToPfxFile\testcert.pfx' $cert = Get-PfxCertificate -FilePath $pfxpath $cert Get-ChildItem -Path c:\myscripts -Filter *.ps1 | Set-AuthenticodeSignature -Certificate $cert
However, Get-PfxCertificate will interactively ask for the password that you specified when you originally exported the certificate to the PFX file.
To import a certificate unattended, try this code instead:
$pfxpath = 'C:\PathToPfxFile\testcert.pfx' $password = 'topsecret' Add-Type -AssemblyName System.Security $cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2 $cert.Import($pfxpath, $password, 'Exportable') $cert
