Custom Process + PowerShell Cert signing
You may need to sign PowerShell scripts you use for your deviceTRUST Custom Processes. File format can be a challenge with script signing. Read here how to format the signed PowerShell scrips properly.
Script signing signs the given script with all details, including content, name, file properties, and format. A change in the file format can be a cog in the machine if unrecognized.
We use a PowerShell script here to guide you through the signing process.
The situation
Your PowerShell Execution Policy might be set to “Signed Scripts only”. This way, the execution of any PowerShell script that has not been signed with a trusted code signing certificate will be denied from running.
The issue
Codesigning being enforced will affect PowerShell based Custom Processes in deviceTRUST Actions. Unsigned scripts will be triggered, but not executed.
This is valid for embedded scripts.
… as well as for externally triggered scripts.
The second issue
Now, even if you signed the cert with your certificate, you might see the same issue: The script is being blocked from execution. The signing is not accepted.
The solution
Opening the script in your favourite text editor before signing, you’ll notice the file format being (for example and most likely) “UTF-8”.
Set the file format to “UTF-8 with BOM” and save. Then sign again.
This will result in a sucessfully executed script.
Anything shown is valid for PowerShell scripts, be the embedded or referenced as file.
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DIESER DIENST KANN ÜBERSETZUNGEN ENTHALTEN, DIE VON GOOGLE BEREITGESTELLT WERDEN. GOOGLE LEHNT JEDE AUSDRÜCKLICHE ODER STILLSCHWEIGENDE GEWÄHRLEISTUNG IN BEZUG AUF DIE ÜBERSETZUNGEN AB, EINSCHLIESSLICH JEGLICHER GEWÄHRLEISTUNG DER GENAUIGKEIT, ZUVERLÄSSIGKEIT UND JEGLICHER STILLSCHWEIGENDEN GEWÄHRLEISTUNG DER MARKTGÄNGIGKEIT, DER EIGNUNG FÜR EINEN BESTIMMTEN ZWECK UND DER NICHTVERLETZUNG VON RECHTEN DRITTER.
CE SERVICE PEUT CONTENIR DES TRADUCTIONS FOURNIES PAR GOOGLE. GOOGLE EXCLUT TOUTE GARANTIE RELATIVE AUX TRADUCTIONS, EXPRESSE OU IMPLICITE, Y COMPRIS TOUTE GARANTIE D'EXACTITUDE, DE FIABILITÉ ET TOUTE GARANTIE IMPLICITE DE QUALITÉ MARCHANDE, D'ADÉQUATION À UN USAGE PARTICULIER ET D'ABSENCE DE CONTREFAÇON.
ESTE SERVICIO PUEDE CONTENER TRADUCCIONES CON TECNOLOGÍA DE GOOGLE. GOOGLE RENUNCIA A TODAS LAS GARANTÍAS RELACIONADAS CON LAS TRADUCCIONES, TANTO IMPLÍCITAS COMO EXPLÍCITAS, INCLUIDAS LAS GARANTÍAS DE EXACTITUD, FIABILIDAD Y OTRAS GARANTÍAS IMPLÍCITAS DE COMERCIABILIDAD, IDONEIDAD PARA UN FIN EN PARTICULAR Y AUSENCIA DE INFRACCIÓN DE DERECHOS.
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ESTE SERVIÇO PODE CONTER TRADUÇÕES FORNECIDAS PELO GOOGLE. O GOOGLE SE EXIME DE TODAS AS GARANTIAS RELACIONADAS COM AS TRADUÇÕES, EXPRESSAS OU IMPLÍCITAS, INCLUINDO QUALQUER GARANTIA DE PRECISÃO, CONFIABILIDADE E QUALQUER GARANTIA IMPLÍCITA DE COMERCIALIZAÇÃO, ADEQUAÇÃO A UM PROPÓSITO ESPECÍFICO E NÃO INFRAÇÃO.