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.

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// Needs #include <CkFtp2.h>
// Needs #include <CkCertStore.h>
// Needs #include <CkCert.h>

    CkString strOut;

    //  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;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = ftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  You may use this account for testing.
    //  This account allows for directory listings and files
    //  to be downloaded.  However, file uploads are not allowed.
    ftp.put_Hostname("ftp.secureftp-test.com");
    ftp.put_Username("test");
    ftp.put_Password("test");

    //  Automatically establish an AUTH TLS secure channel
    //  after connecting on the standard FTP port 21.
    ftp.put_AuthTls(true);

    //  The Ssl property is for establishing an implicit SSL connection
    //  on port 990.  Do not set it.
    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) {
        strOut.append(certStore.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkCert *cert = 0;
    cert = certStore.FindCertBySubjectCN("Your cert's common name");
    if (cert == 0 ) {
        strOut.append(certStore.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    ftp.SetSslClientCert(*cert);

    delete cert;

    //  Connect and login to the FTP server.
    success = ftp.Connect();
    if (success != true) {
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }
    else {
        //  LastErrorText contains information even when
        //  successful. This allows you to visually verify
        //  that the secure connection actually occurred.
        strOut.append(ftp.lastErrorText());
        strOut.append("\r\n");
    }

    strOut.append("Secure FTP Channel Established!\r\n");
    strOut.append(ftp.lastErrorText());
    strOut.append("\r\n");

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

    ftp.Disconnect();

    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());