(Delphi DLL) PKCS11 Find Private Key by Label

See more PKCS11 Examples

Demonstrates how to find a private key based on a user-specified label.

Note: This example requires Chilkat v9.5.0.96 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, Pkcs11, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
pkcs11: HCkPkcs11;
pin: PWideChar;
userType: Integer;
success: Boolean;
jsonTemplate: HCkJsonObject;
privKeyHandle: Cardinal;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

pkcs11 := CkPkcs11_Create();

// Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
// For example:
CkPkcs11_putSharedLibPath(pkcs11,'C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS11.dll');

// Use your HSM's PIN.
pin := '0000';

// Normal user = 1
userType := 1;

// Establish a logged-on user session with the HSM.
success := CkPkcs11_QuickSession(pkcs11,userType,pin);
if (success = False) then
  begin
    Memo1.Lines.Add(CkPkcs11__lastErrorText(pkcs11));
    Exit;
  end;

// Provide a template to find a PKCS11 object.
jsonTemplate := CkJsonObject_Create();

// Find an RSA private key with the label "MySshKey".
// Here's an example of how the key was originally imported: 
// PKCS11 Import SSH Key
CkJsonObject_UpdateString(jsonTemplate,'class','private_key');
CkJsonObject_UpdateString(jsonTemplate,'key_type','rsa');
CkJsonObject_UpdateString(jsonTemplate,'label','MySshKey');

privKeyHandle := CkPkcs11_FindObject(pkcs11,jsonTemplate);
if (privKeyHandle = 0) then
  begin
    Memo1.Lines.Add(CkPkcs11__lastErrorText(pkcs11));
    Exit;
  end;

// The private key handle is only valid during the PKCS11 session.
// If you wish to use the private key in another PKCS11 session,
// you'll first need to find it.  See:  
Memo1.Lines.Add('private key handle: ' + IntToStr(privKeyHandle));

// Do whatever you wish with the private key handle...
// ...
// ...

CkPkcs11_Logout(pkcs11);
CkPkcs11_CloseSession(pkcs11);

CkPkcs11_Dispose(pkcs11);
CkJsonObject_Dispose(jsonTemplate);

end;