Delphi ActiveX

Load PEM and List Certificates

Demonstrates how to load a PEM containing certificates and accesses each individual certificate. Delphi ActiveX

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
success: Integer;
pem: TChilkatPem;
i: Integer;
numCerts: Integer;
cert: IChilkatCert;

begin
success := 0;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

success := 0;

pem := TChilkatPem.Create(Self);

// Load the .p7b from a file.
success := pem.LoadPemFile('/Users/chilkat/testData/p7b/cacert_mozilla.pem');
if (success <> 1) then
  begin
    Memo1.Lines.Add(pem.LastErrorText);
    Exit;
  end;

numCerts := pem.NumCerts;
if (numCerts = 0) then
  begin
    Memo1.Lines.Add(('Error: Expected the PEM to contain certificates.'));
    Exit;
  end;

// Access each certificate and show the Subject CN (Common Name)
for i := 1 to numCerts do
  begin
    cert := pem.GetCert(i - 1);
    Memo1.Lines.Add(IntToStr(i) + ': ' + cert.SubjectCN);

  end;
end;