(Perl) Using WS_FTP Self-signed Certificate file (.crt) and Private Key File. (.key)

Demonstrates how to use a self-signed certificate created by WS_FTP with Chilkat FTP2.

Note: It is usually not necessary for the FTP client to use a client-side certificate. Most FTP servers using SSL and TLS connections (explicit or implicit) do not require client-side certs. In addition, some high-security FTP servers require "real" certificates -- meaning certificates issued by a real certificate authority with a chain of authentication that leads to a trusted root certificate. The certificates created by WS_FTP are self-signed and untrusted.

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.

# Important:  Before running this program, convert your
# .crt and .key files to a .p12 using OpenSSL:
# The command is this:
# openssl pkcs12 -export -in test.crt -inkey test.key -out test.p12
# 

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

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

# 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);

# Create an instance of a certificate store object, load a .p12 file,
# locate the certificate we need, and use it for signing.
# (a P12/PFX file may contain more than one certificate.)
$certStore = chilkat::CkCertStore->new();
# The 1st argument is the filename, the 2nd arg is the 
# .p12 file's password.  (OpenSSL will prompty you to set a password
# when converting the .crt and .key into a .p12).
$success = $certStore->LoadPfxFile("test.p12","secret");
if ($success != 1) {
    print $certStore->lastErrorText() . "\r\n";
    exit;
}

# cert is a Cert
$cert = $certStore->FindCertBySubjectCN("Your cert's common name");
if ($certStore->get_LastMethodSuccess() == 0) {
    print $certStore->lastErrorText() . "\r\n";
    exit;
}

$success = $ftp->SetSslClientCert($cert);

# Connect and login to the FTP server.
$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";
print $ftp->lastErrorText() . "\r\n";

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

# ...
# ...

$success = $ftp->Disconnect();