ConvertFrom-AadBase64Certificate.ps1
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<#
.SYNOPSIS Converts a single Base64Encoded certificate (Not Chained Ceritificate) to a Custom PSObject for easy readability .DESCRIPTION Converts a single Base64Encoded certificate (Not Chained Ceritificate) to a Custom PSObject for easy readability .PARAMETER Base64String The Base64Encoded Certificate .EXAMPLE ConvertFrom-AadBase64Certificate -Base64String "MIIHkDCCBnigAwIBAgIRALENqydLHXg/u+VM04+dg2QwDQYJKoZIhvcNAQELBQAwgZ..." .NOTES General notes #> function ConvertFrom-AadBase64Certificate { [cmdletbinding(DefaultParameterSetName="Default")] param( [parameter(Mandatory=$true,Position=0,ValueFromPipeline=$true,ParameterSetName="Default")] [String] $Base64String, [parameter(Mandatory=$true,Position=0,ValueFromPipeline=$true,ParameterSetName="Path")] [String] $Path ) if($Path) { $Base64String = Get-Content -Path $Path -Raw if(-not $Base64String) { return } } if(-not $Base64String.StartsWith("MII") -and -not $Base64String.StartsWith("-----BEGIN")) { $Base64String = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($Base64String)); #$Base64String = $CertString -split "`n" #$Base64String = $CertString.Replace("`n","") #$Base64String = $CertString.Replace("`r","") <# foreach($string in $result) { if(-not $string.StartsWith("-----")) { $StringBuilder += $string } } $Base64String = $StringBuilder #> } $bytes = [System.Text.Encoding]::UTF8.GetBytes($Base64String) $cert = new-object System.Security.Cryptography.X509Certificates.X509Certificate2 -ArgumentList @(,$bytes) $kid = ConvertFrom-AadThumbprintToBase64String -Thumbprint $cert.Thumbprint $Properties = @{ Kid = $kid; Thumbprint = $cert.Thumbprint; NotAfter = $cert.NotAfter; NotBefore = $cert.NotBefore; Subject = $cert.Subject; Issuer = $cert.Issuer; Certificate = $cert; } $Object = new-object PSObject -Property $Properties return $Object } |