(Delphi ActiveX) Transition from Cert.ExportPrivateKey to Cert.GetPrivateKey

Provides instructions for replacing deprecated ExportPrivateKey method calls with GetPrivateKey.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
cert: TChilkatCert;
privatekeyObj: IPrivateKey;
privatekeyOut: TPrivateKey;
success: Integer;

begin
cert := TChilkatCert.Create(Self);

// ------------------------------------------------------------------------
// The ExportPrivateKey method is deprecated:

privatekeyObj := cert.ExportPrivateKey();
if (cert.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using GetPrivateKey.
// Your application creates a new, empty PrivateKey object which is passed 
// in the last argument and filled upon success.

privatekeyOut := TPrivateKey.Create(Self);
success := cert.GetPrivateKey(privatekeyOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;
end;