(Delphi ActiveX) Find and Load Certificate by Thumbprint

Demonstrates how to find and load a certificate by SHA1 thumbprint. This is a Microsoft Windows-only example. It assumes the certificate is already installed on the Windows system.

Note: This example requires Chilkat v9.5.0.83 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;
success: Integer;

begin
// This example requires Chilkat v9.5.0.83 or greater.

cert := TChilkatCert.Create(Self);

// The thumbprint can be passed in any encoding, such as hex, base64, etc.
// The 2nd argument indicates the encoding of the 1st argument.
success := cert.LoadByThumbprint('ea5a129c1919a52d238ee28d9f3a8f345b768388','hex');
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Found: ' + cert.SubjectDN);
end;