(Delphi DLL) Transition from RandomizeKey to GenRandomBytesENC

Provides instructions for replacing deprecated RandomizeKey method calls with GenRandomBytesENC.

Note: This example requires Chilkat v11.0.0 or greater.

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, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: HCkCrypt2;
randomKeyBase64: PWideChar;

begin
crypt := CkCrypt2_Create();

CkCrypt2_putCryptAlgorithm(crypt,'aes');
CkCrypt2_putCipherMode(crypt,'cbc');
CkCrypt2_putKeyLength(crypt,256);
// ...

// ------------------------------------------------------------------------
// The RandomizeKey method is deprecated:

// Generates and sets a random 32-byte (256-bit) secret key.
CkCrypt2_RandomizeKey(crypt);

// ------------------------------------------------------------------------
// Do the equivalent using GenRandomBytesENC followed by SetEncodedKey

CkCrypt2_putEncodingMode(crypt,'base64');
randomKeyBase64 := CkCrypt2__genRandomBytesENC(crypt,32);
CkCrypt2_SetEncodedKey(crypt,randomKeyBase64,'base64');

CkCrypt2_Dispose(crypt);

end;