Convert-CertificateToBase64String.ps1
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function Convert-CertificateToBase64String { <# .SYNOPSIS Converts a certificate object to a Base64 string .PARAMETER Thumbprint Thumbprint of the certificate to convert .PARAMETER FilePath Certificate file to convert to Base64 string .PARAMETER Password Password to be used for the Private Key (pfx) certificate .EXAMPLE Convert-CertificateToBase64String -Thumbprint 0B2C5E31A344F7BC85E78100B90DF95399C289FC .EXAMPLE Convert-CertificateToBase64String -FilePath C:\Temp\certificate.cer #> param( [parameter(ParameterSetName = 'thumbprint')] [string]$Thumbprint, [parameter(ParameterSetName = 'file')] [ValidateScript( { Test-Path $_ })] [string]$FilePath, [parameter()] [securestring]$Password ) if ($PSCmdlet.ParameterSetName -eq 'file') { $Cer = New-Object -TypeName System.Security.Cryptography.X509Certificates.X509Certificate2($FilePath) $BinCert = $Cer.GetRawCertData() [System.Convert]::ToBase64String($BinCert) } if ($PSCmdlet.ParameterSetName -eq 'thumbprint') { $cert = (Get-ChildItem cert: -Recurse | Where-Object Thumbprint -Match $Thumbprint)[0] $type = [System.Security.Cryptography.X509Certificates.X509ContentType]::pfx $bytes = $cert[0].export($type, $Password) [system.convert]::ToBase64String($bytes) } } |