(Delphi DLL) Find Certificate by Subject CN (Common Name)

See more Cert Store Examples

Note: Requires Chilkat v10.1.2 or later.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Cert, CertStore, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
certStore: HCkCertStore;
readOnly: Boolean;
success: Boolean;
json: HCkJsonObject;
cert: HCkCert;

begin
certStore := CkCertStore_Create();

// This opens the Current User certificate store on Windows,
// On MacOS and iOS it opens the default Keychain.
readOnly := False;
success := CkCertStore_OpenCurrentUserStore(certStore,readOnly);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCertStore__lastErrorText(certStore));
    Exit;
  end;

// Find the certificate having a Subject CN = "Example ABC".
json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'CN','Example ABC');

cert := CkCert_Create();
success := CkCertStore_FindCert(certStore,json,cert);
if (success = True) then
  begin
    // Show the full distinguished name of the certificate.
    Memo1.Lines.Add('Found: ' + CkCert__subjectDN(cert));
  end
else
  begin
    Memo1.Lines.Add('Not found.');
  end;

CkCertStore_Dispose(certStore);
CkJsonObject_Dispose(json);
CkCert_Dispose(cert);

end;