JS7 JobScheduler

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Table of Contents

Introduction

SOS digitally signs PowerShell scripts that are offered for download:. The signature is included inside the script, usually from from a number of comments that follow the script code.

  • Users can verify a script's signature to prove
    • that the script in fact was created and signed by SOS,
    • that the script's signature is valid.
  • Use the built-in Get-AuthenticodeSignature PowerShell cmdlet for Windows to verify the signature of a given PowerShell script, for example New-JS7WorkflowFromExcel.ps1 available for download from the JS7 - How to import jobs and workflows from Excel article.
    • At the time of writing the Get-AuthenticodeSignature cmdlet is not available for Unix.
    • For PowerShell cmdlets offered by the JS7 - Download page users can apply instructions offered by the JS7 - Verifying releases article for Unix and Windows platforms.

Verifying Signatures

Find the following example how to verify a PowerShell script's signature:

Code Block
languagepowershell
Get-AuthenticodeSignature C:\download\New-JS7WorkflowFromExcel.ps1 | Format-List


SignerCertificate      : [Subject]
                           CN=SOS Software- und Organisations-Service GmbH, O=SOS Software- und Organisations-Service GmbH, S=Berlin, C=DE,
                         OID.2.5.4.15=Private Organization, OID.1.3.6.1.4.1.311.60.2.1.3=DE, SERIALNUMBER=HRB 21015

                         [Issuer]
                           CN=Sectigo Public Code Signing CA EV R36, O=Sectigo Limited, C=GB

                         [Serial Number]
                           4B0F8D82F0B376B297B6EADA4EA6D4EC

                         [Not Before]
                           30.05.2023 02:00:00

                         [Not After]
                           30.05.2026 01:59:59

                         [Thumbprint]
                           2B03EA68F103E80D83228ABCF88A3B448CC8B257

TimeStamperCertificate : [Subject]
                           CN="Sectigo RSA Time Stamping Signer #4", O=Sectigo Limited, S=Manchester, C=GB

                         [Issuer]
                           CN=Sectigo RSA Time Stamping CA, O=Sectigo Limited, L=Salford, S=Greater Manchester, C=GB

                         [Serial Number]
                           394C25E17CA06D27A865E23BD91D22D4

                         [Not Before]
                           03.05.2023 02:00:00

                         [Not After]
                           03.08.2034 01:59:59

                         [Thumbprint]
                           AE62AF750A0CBD47D6461F7568E2BC8CE7CA4F94

Status                 : Valid
StatusMessage          : Signature verified.
Path                   : C:\download\New-JS7WorkflowFromExcel.ps1
SignatureType          : Authenticode
IsOSBinary             : False

...

Further Resources