Perl

Set an FTPS Client Certificate from PEM

Demonstrates the Chilkat Ftp2.SetSslClientCertPem method, which configures a client certificate and private key from PEM. The first argument may be the PEM text or a PEM file path, and the second is the private-key password (empty when the key is not encrypted).

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the PEM-based form of setting the mutual-TLS client certificate — convenient when the certificate and key already live in a .pem file, the common format from OpenSSH and Unix tooling. Use SetSslClientCertPfx instead for a PKCS#12 .pfx/.p12 bundle. As with any client certificate, set it before connecting.

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use strict;
use warnings;
use Chilkat2;

# Demonstrates the Ftp2.SetSslClientCertPem method, which configures a client certificate and
# private key from PEM.  The 1st argument is the PEM text or a PEM file path, and the 2nd is the
# private-key password (empty when the key is not encrypted).

my $ftp = Chilkat2::Ftp2->new;

$ftp->Hostname('ftp.example.com');
$ftp->Username('myFtpLogin');

# Normally you would not hard-code the password in source.  You should instead obtain it
# from an interactive prompt, environment variable, or a secrets vault.
$ftp->Password('myPassword');

# Use explicit FTPS (AUTH TLS) on the standard FTP port.
$ftp->AuthTls(1);

# Provide the PEM client certificate before connecting.  The password should come from a secure
# source rather than being hard-coded.
my $pemPassword = 'myPemPassword';
my $success = $ftp->SetSslClientCertPem('qa_data/client.pem', $pemPassword);
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

$success = $ftp->Connect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

print "Connected with a PEM client certificate.\n";

$success = $ftp->Disconnect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}