(Delphi DLL) Load P7B and Iterate Certificates

Demonstrates how to load a .p7b containing one or more certificates access each of them.

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, Global, Cert, Pem;

...

procedure TForm1.Button1Click(Sender: TObject);
var
chilkatGlob: HCkGlobal;
success: Boolean;
pem: HCkPem;
numCerts: Integer;
i: Integer;
cert: HCkCert;

begin
// Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
chilkatGlob := CkGlobal_Create();
success := CkGlobal_UnlockBundle(chilkatGlob,'Anything for 30-day trial.');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkGlobal__lastErrorText(chilkatGlob));
    Exit;
  end;

// The Chilkat PEM class was introduced in v9.5.0.49.  
// It requires the bundle to be unlocked, as shown above.
pem := CkPem_Create();

// Load the .p7b from a file.
success := CkPem_LoadP7bFile(pem,'../myCertFiles/myP7b.p7b');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkPem__lastErrorText(pem));
    Exit;
  end;

// Note: If the app already has the p7b loaded in memory, the LoadP7b method
// may be called instead.  (see the online reference documentation)

// Iterate over the certificates.
numCerts := CkPem_getNumCerts(pem);
i := 0;

while i < numCerts do
  begin

    cert := CkPem_GetCert(pem,i);
    Memo1.Lines.Add('Certificate ' + IntToStr(i) + ' : ' + CkCert__subjectDN(cert));
    CkCert_Dispose(cert);

    i := i + 1;
  end;

CkGlobal_Dispose(chilkatGlob);
CkPem_Dispose(pem);

end;