Convert PFX SSL certificate to base64 in PowerShell and PowerShell Core.

    Several resources in Azure requires sending the SSL cert data, you can get this by generating it from the SSL PFX file.

    Regular powershell

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    $fileContentBytes = get-content 'your-cert.pfx' -Encoding Byte
[System.Convert]::ToBase64String($fileContentBytes) | Out-File ‘pfx-encoded-bytes.txt’

    PowerShell Core

    The first -Encoding Byte will cause an error in PowerShell Core, so you will actually neeed to use AsByteStream.

    PowerShell Core Error

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    Set-Content : Cannot bind parameter ‘Encoding’. Cannot convert the “Byte” value of type “System.String” to type “System.Text.Encoding”.

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    $Set-Content -Path 'your-cert.pfx' -AsByteStream
[System.Convert]::ToBase64String($fileContentBytes) | Out-File ‘pfx-encoded-bytes.txt’