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Delphi DLL

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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Delphi DLL
var
success: Boolean;
ftp: HCkFtp2;
pfxPassword: PWideChar;

begin
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.

ftp := CkFtp2_Create();

CkFtp2_putHostname(ftp,'ftp.example.com');
CkFtp2_putUsername(ftp,'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.
CkFtp2_putPassword(ftp,'myPassword');

//  Use explicit FTPS (AUTH TLS) on the standard FTP port.
CkFtp2_putAuthTls(ftp,True);

//  Provide the PFX client certificate before connecting.  The password should come from a secure
//  source rather than being hard-coded.
pfxPassword := 'myPfxPassword';
success := CkFtp2_SetSslClientCertPfx(ftp,'qa_data/client.pfx',pfxPassword);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

success := CkFtp2_Connect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;
Memo1.Lines.Add('Connected with a PFX client certificate.');

success := CkFtp2_Disconnect(ftp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

CkFtp2_Dispose(ftp);