Set an FTPS Client Certificate from a PFX File

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Demonstrates the Chilkat Ftp2.SetSslClientCertPfx method, which loads a client certificate and private key from a PFX/P12 file. The first argument is the file path and the second is its password.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: A PFX (PKCS #12) file bundles a certificate with its private key in one password-protected file — the format Windows and many corporate PKI tools export. This is the counterpart to SetSslClientCertPem for mutual-TLS authentication when your credentials are packaged as a single .pfx. Set it before connecting.

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bool success = false;

//  Demonstrates the Ftp2.SetSslClientCertPfx method, which loads a client certificate and private
//  key from a PFX/P12 file.  The 1st argument is the PFX file path and the 2nd is its password.

Chilkat.Ftp2 ftp = new Chilkat.Ftp2();

ftp.Hostname = "ftp.example.com";
ftp.Username = "myFtpLogin";

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
ftp.Password = "myPassword";

//  Use explicit FTPS (AUTH TLS) on the standard FTP port.
ftp.AuthTls = true;

//  Provide the PFX client certificate before connecting.  The password should come from a secure
//  source rather than being hard-coded.
string pfxPassword = "myPfxPassword";
success = ftp.SetSslClientCertPfx("qa_data/client.pfx",pfxPassword);
if (success == false) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

success = ftp.Connect();
if (success == false) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

Debug.WriteLine("Connected with a PFX client certificate.");

success = ftp.Disconnect();
if (success == false) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}