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.

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use chilkat();

$ftp = new chilkat::CkFtp2();

#  Any string unlocks the component for the 1st 30-days.
$success = $ftp->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

$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 = new chilkat::CkCertStore();

$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 CkCert
$cert = $certStore->FindCertBySubject("Chilkat Software, Inc.");
if ($cert eq null ) {
    print "Certificate not found!" . "\r\n";
    exit;
}

#  Use this certificate for our secure (SSL/TLS) connection:
$ftp->SetSslClientCert($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() . "\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!" . "\n";

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

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

$ftp->Disconnect();