(Perl) Secure FTP with Client Certificate

Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$ftp = chilkat::CkFtp2->new();

$ftp->put_Hostname("ftp.***.com");
$ftp->put_Port(21);
$ftp->put_Username("test");
$ftp->put_Password("test");

# This example will use explict TLS/SSL.
# Establish an explicit secure channel after connection
# on the standard FTP port 21.
$ftp->put_AuthTls(1);

# The Ssl property is for establishing an implicit SSL connection
# on port 990.  Because this example uses explicit SSL, it 
# should remain 0.
$ftp->put_Ssl(0);

# Load a certificate from a .pfx
# A PFX may contain several certs, including the certificates
# in a chain of authority.
$certStore = chilkat::CkCertStore->new();

$password = "***";
# Load the certs from a PFX into an in-memory certificate store:
$success = $certStore->LoadPfxFile("chilkat.pfx",$password);
if ($success != 1) {
    print $certStore->lastErrorText() . "\r\n";
    exit;
}

# Find the exact cert we'll use:

# cert is a Cert
$cert = $certStore->FindCertBySubject("Chilkat Software, Inc.");
if ($certStore->get_LastMethodSuccess() == 0) {
    print "Certificate not found!" . "\r\n";
    exit;
}

# Use this certificate for our secure (SSL/TLS) connection:
$success = $ftp->SetSslClientCert($cert);

# Connect and login to the FTP server.  The connection is 
# made secure because of the AuthTls setting.
$success = $ftp->Connect();
if ($success != 1) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}
else {
    # LastErrorText contains information even when
    # successful. This allows you to visually verify
    # that the secure connection actually occurred.
    print $ftp->lastErrorText() . "\r\n";
}

print "Secure FTP Channel Established!" . "\r\n";

# Do whatever you're doing to do ...
# upload files, download files, etc...

# .....
# .....

$success = $ftp->Disconnect();