Delphi DLL

Find a Certificate in the "Other People" Windows Certificate Store

See more Certificates Examples

Demonstrates how to open the "Current User --> Other People" Windows certificate store, and locates a certificate matching an email address. Delphi 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
success: Boolean;
certStore: HCkCertStore;
readOnly: Boolean;
jsonE: HCkJsonObject;
cert: HCkCert;

begin
success := False;

certStore := CkCertStore_Create();

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

// Find the certificate for the email address:
jsonE := CkJsonObject_Create();
CkJsonObject_UpdateString(jsonE,'email','joe@example.com');

cert := CkCert_Create();
success := CkCertStore_FindCert(certStore,jsonE,cert);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCertStore__lastErrorText(certStore));
    Exit;
  end;

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

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

end;