public/new-SpnAuthCert.ps1
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function new-SpnAuthCert{ <# Author = "Jos Lieben (jos@lieben.nu)" CompanyName = "Lieben Consultancy" Copyright = "https://www.lieben.nu/liebensraum/commercial-use/" #> Param( [Parameter(Mandatory=$true)]$tenantId ) $pfxPath = "$env:USERPROFILE\Desktop\$tenantId.pfx" $cerPath = "$env:USERPROFILE\Desktop\$tenantId.cer" $password = ConvertTo-SecureString -String $(-join ((33..126) | Get-Random -Count 46 | % { [char]$_ })) -Force -AsPlainText $cert = New-SelfSignedCertificate -Subject "CN=$tenantId" -KeyAlgorithm RSA -KeyLength 2048 ` -CertStoreLocation "Cert:\CurrentUser\My" -NotAfter (Get-Date).AddDays(7) Export-PfxCertificate -Cert $cert -FilePath $pfxPath -Password $password Export-Certificate -Cert $cert -FilePath $cerPath Write-Host "Certificate generated successfully!" Write-Host "CER file: $cerPath (Import this into Entra ID)" Write-Host "PFX file: $pfxPath (Ensure this is imported on your automation machine)" } |