(Delphi ActiveX) Convert to DER encoded X.509 Certificate (.cer, .crt)

Loads a digital certificate from any format and saves to a binary DER encoded X.509 Certificate (.cer, .crt).

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;
success: Integer;

begin
cert := TChilkatCert.Create(Self);

// LoadFromFile will load virtually any certificate format file.
// It will auto-recognize the format and load appropiately.
// In this case, load a PEM format certificate and convert to DER.
success := cert.LoadFromFile('/Users/chilkat/testData/pem/chilkat.pem');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

success := cert.ExportCertDerFile('chilkat.der');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Converted certificate from PEM to DER format.');
end;