(Delphi ActiveX) Find a Certificate in the "Other People" Windows Certificate Store

Demonstrates how to open the "Current User --> Other People" Windows certificate store, and locates a certificate matching an email address.

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
certStore: TChilkatCertStore;
readOnly: Integer;
success: Integer;
cert: IChilkatCert;

begin
certStore := TChilkatCertStore.Create(Self);

// The "AddressBook" is the "Other People" certificate store as shown in certmgr.msc
readOnly := 1;
success := certStore.OpenWindowsStore('CurrentUser','AddressBook',readOnly);
if (success <> 1) then
  begin
    Memo1.Lines.Add(certStore.LastErrorText);
    Exit;
  end;

cert := certStore.FindCertByRfc822Name('sales.edifact@somewhere.com');
if (certStore.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(certStore.LastErrorText);
    Exit;
  end;

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