Lua Requires Chilkat v10.1.2+

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

See more FTP Examples

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.

Lua

local chilkat = require("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
--

local ftp = chilkat.Ftp2.new()

ftp.hostname = "ftp.example.com"
ftp.port = 21
ftp.username = "testLogin"
ftp.password = "testPassword"

-- This example will use explict TLS/SSL.
-- Establish an explicit secure channel after connection
-- on the standard FTP port 21.
ftp.auth_tls = true

-- The Ssl property is for establishing an implicit SSL connection
-- on port 990.  Because this example uses explicit SSL, it
-- should remain false.
ftp.ssl = false

-- 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.)
local certStore = chilkat.CertStore.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).
local success = certStore:load_pfx_file("test.p12", "secret")
if not success then
    print(certStore.last_error_text)
    return
end

local jsonCN = chilkat.JsonObject.new()
jsonCN:update_string("CN", "cert common name")

local cert = chilkat.Cert.new()
success = certStore:find_cert(jsonCN, cert)
if not success then
    print(certStore.last_error_text)
    return
end

success = ftp:set_ssl_client_cert(cert)

-- Connect and login to the FTP server.
success = ftp:connect()
if not success then
    print(ftp.last_error_text)
    return
else
    -- LastErrorText contains information even when
    -- successful. This allows you to visually verify
    -- that the secure connection actually occurred.
    print(ftp.last_error_text)
end

print("Secure FTP Channel Established!")
print(ftp.last_error_text)

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

-- ...
-- ...

success = ftp:disconnect()