(Delphi DLL) PKCS11 Generate Secret Key (such as AES)

See more PKCS11 Examples

Generates a symmetric secret key such as AES on the HSM.

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;
keyType: PWideChar;
json: HCkJsonObject;
keyHandle: 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.
// (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
CkPkcs11_putSharedLibPath(pkcs11,'C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll');

// Establish a logged-on session.
pin := '0000';
userType := 1;
success := CkPkcs11_QuickSession(pkcs11,userType,pin);
if (success = False) then
  begin
    Memo1.Lines.Add(CkPkcs11__lastErrorText(pkcs11));
    Exit;
  end;

// Let's generate a 256-bit AES key on the token, which will exist for the duration of this session.
// Symmetric keys, such as AES keys, are typically created (or imported) and used during a single session.

// Other possible values for keyType are "AES XTS", "Blowfish", "Twofish", "ChaCha20", and others. 
// In virtually all cases, you'll want to create an AES key.
keyType := 'AES';

// Specify attributes and abilities (how this key can be used) by providing a JSON template.
json := CkJsonObject_Create();

// The key can be extracted or wrapped.
CkJsonObject_UpdateBool(json,'extractable',True);

// Allow the key to be used for encryption, decryption, wrapping other keys, and unwrapping other keys.
CkJsonObject_UpdateBool(json,'encrypt',True);
CkJsonObject_UpdateBool(json,'decrypt',True);
CkJsonObject_UpdateBool(json,'wrap',True);
CkJsonObject_UpdateBool(json,'unwrap',True);

// Indicate a 256-bit AES key is to be generated by setting the value_len attribute equal to the key size in bytes.
// (32 bytes * 8 bits/byte = 256 bits)
CkJsonObject_UpdateInt(json,'value_len',32);

keyHandle := CkPkcs11_GenSecretKey(pkcs11,keyType,json);
if (keyHandle = 0) then
  begin
    Memo1.Lines.Add(CkPkcs11__lastErrorText(pkcs11));
    Memo1.Lines.Add('Failed to generate an AES key.');
  end
else
  begin
    Memo1.Lines.Add('key handle = ' + IntToStr(keyHandle));
    Memo1.Lines.Add('Success.');
  end;

CkPkcs11_Logout(pkcs11);
CkPkcs11_CloseSession(pkcs11);

CkPkcs11_Dispose(pkcs11);
CkJsonObject_Dispose(json);

end;