Convert Certificate from PEM to DER

Convert a PEM formatted certificate file (.cer, .crt, .pem) to DER format (.cer, .der). The Chilkat certificate class/object is a freeware component that is included in many of the Chilkat downloads.

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATCERTIFICATELib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
cert: TChilkatCert;
success: Integer;

begin
cert := TChilkatCert.Create(Self);

//  LoadFromFile will load either PEM and DER formatted files.
//  It automatically recognizes the file format based on the
//  file contents.
success := cert.LoadFromFile('chilkat.crt');
if (success <> 1) then
  begin
    ShowMessage(cert.LastErrorText);

  end;

ShowMessage(cert.SubjectDN);

success := cert.ExportCertDerFile('chilkat.der');
if (success <> 1) then
  begin
    ShowMessage(cert.LastErrorText);

  end;

ShowMessage('success!');
end;