Add-AzServicePrincipalCertificate.ps1
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function Add-AzServicePrincipalCertificate { <# .SYNOPSIS Add a new Certificate to the specified Azure AD Application .PARAMETER ApplicationId The application id of the application to add the credentials to .PARAMETER CertificatePath Path to the .cer file to add .EXAMPLE Add-AzServicePrincipalCertificate -ApplicationId 84f121e6-bb47-568f-912f-410c1824ebe1 -CertificatePath C:\Temp\MyNewCert.cer #> [CmdletBinding()] param( [parameter(Mandatory, Position = 0)] [ValidateNotNullOrEmpty()] [string]$ApplicationId, [parameter(Mandatory, Position = 1)] [ValidateScript( { if (Test-Path -Path $_) { $true } else { throw "Invalid certificate path: $_" } }) ] [string]$CertificatePath ) $CertificatePath = Resolve-Path $CertificatePath $Cer = New-Object -TypeName System.Security.Cryptography.X509Certificates.X509Certificate2($CertificatePath) $BinCert = $Cer.GetRawCertData() $CredValue = [System.Convert]::ToBase64String($BinCert) New-AzADAppCredential -ApplicationId $ApplicationId -CertValue $CredValue -StartDate $Cer.NotBefore -EndDate $Cer.NotAfter } |