C++

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.

C++

#include <CkFtp2.h>
#include <CkCertStore.h>
#include <CkJsonObject.h>
#include <CkCert.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  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
    //  

    CkFtp2 ftp;

    ftp.put_Hostname("ftp.example.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(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.put_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.)
    CkCertStore certStore;
    //  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 != true) {
        std::cout << certStore.lastErrorText() << "\r\n";
        return;
    }

    CkJsonObject jsonCN;
    jsonCN.UpdateString("CN","cert common name");

    CkCert cert;
    success = certStore.FindCert(jsonCN,cert);
    if (success == false) {
        std::cout << certStore.lastErrorText() << "\r\n";
        return;
    }

    success = ftp.SetSslClientCert(cert);

    //  Connect and login to the FTP server.
    success = ftp.Connect();
    if (success != true) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }
    else {
        //  LastErrorText contains information even when
        //  successful. This allows you to visually verify
        //  that the secure connection actually occurred.
        std::cout << ftp.lastErrorText() << "\r\n";
    }

    std::cout << "Secure FTP Channel Established!" << "\r\n";
    std::cout << ftp.lastErrorText() << "\r\n";

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

    //  ...
    //  ...

    success = ftp.Disconnect();
    }