PowerShell

Use a PEM TLS Client Certificate

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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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $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.

$mailman = New-Object Chilkat.MailMan

#  Configure the SMTP server connection.
$mailman.SmtpHost = "smtp.example.com"
$mailman.SmtpPort = 465
$mailman.SmtpSsl = $true
$mailman.SmtpUsername = "user@example.com"
$mailman.SmtpPassword = "myPassword"

#  Load the client certificate from a PEM file.
$success = $mailman.SetSslClientCertPem("qa_data/certs/client.pem","pem_password")
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$success = $mailman.VerifySmtpLogin()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Connected using a PEM TLS client certificate.")

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