test-CertificateSubject.ps1
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function test-CertificateSubject { Param ( [Parameter(Mandatory = $true)] [string]$msGraphCertificateSubject ) out-logfile -string "Entering test-CertificateSubject" out-logfile -string "Testing to ensure that certificate subject is propertly x500 distinguished name (DN) formatted string." try { $null = [System.Security.Cryptography.X509Certificates.X500DistinguishedName]::new($msGraphCertificateSubject) } catch { out-logfile -string "Certificate subject is not properly x500 distinguished name (DN) formatted." out-logfile -string "CERTIFICATE_SUBJECT_FORMAT_EXCEPTION: Certificate subject is not properly x500 distinguished name (DN) formatted" -isError:$TRUE } out-logfile -string "Testing to ensure that certificate is in LocalMachine\My or CurrentUser\My" if (Get-ChildItem "Cert:\LocalMachine\My\*" | where-object {$_.subject -eq $msGraphCertificateSubject}) { out-logfile -string "Certificate found in LocalMachine\My" } elseif (Get-ChildItem "Cert:\CurrentUser\My\*" | where-object {$_.subject -eq $msGraphCertificateSubject}) { out-logfile -string "Certificate found in CurrentUser\My" } else { out-logfile -string "Certificate not found in LocalMachine\My or CurrentUser\My" out-logfile -string "CERTIFICATE_NOT_FOUND_BY_SUBJECT_EXCEPTION" -isError:$TRUE } } |