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Use a PEM TLS Client Certificate

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Demonstrates the Chilkat MailMan.SetSslClientCertPem method, which sets the client-side certificate for SSL/TLS connections, loading it from PEM data or from a PEM file. The first argument may contain the PEM text itself or a path to a PEM file; the second is the PEM password. This example loads the client certificate from a PEM file.

Background: PEM is the familiar Base64 text format bracketed by -----BEGIN CERTIFICATE----- lines, and a single PEM can hold both a certificate and its (optionally encrypted) private key. It is the common format in Unix/OpenSSL environments, whereas PFX is more typical on Windows. Because this method accepts either the PEM text or a filename, you can supply credentials straight from a config value or secret store without writing them to disk.

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Local $bSuccess = False

;  Demonstrates the MailMan.SetSslClientCertPem method, which sets the client-side
;  certificate for SSL/TLS connections, loading it from PEM data or from a PEM file.  The
;  1st argument may contain PEM text or a PEM file path; the 2nd is the PEM password.

$oMailman = ObjCreate("Chilkat.MailMan")

;  Configure the SMTP server connection.
$oMailman.SmtpHost = "smtp.example.com"
$oMailman.SmtpPort = 465
$oMailman.SmtpSsl = True
$oMailman.SmtpUsername = "user@example.com"
$oMailman.SmtpPassword = "myPassword"

;  Load the client certificate from a PEM file.
$bSuccess = $oMailman.SetSslClientCertPem("qa_data/certs/client.pem","pem_password")
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oMailman.VerifySmtpLogin()
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Connected using a PEM TLS client certificate." & @CRLF)

;  Note: The path "qa_data/certs/client.pem" is a relative local filesystem path,
;  relative to the current working directory of the running application.