Pascal (Lazarus/Delphi)

ScMinidriver - Change Smart Card PIN (or USB token PIN)

See more ScMinidriver Examples

Demonstrates how to change the PIN for a smart card or USB token. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.ScMinidriver;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  scmd: TScMinidriver;
  readerName: string;
  currentPin: string;
  newPin: string;
  retval: Integer;

begin
  success := False;

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

  scmd := TScMinidriver.Create;

  //  Reader names (smart card readers or USB tokens) can be discovered
  //  via List Readers or Find Smart Cards
  readerName := 'Alcor Micro USB Smart Card Reader 0';
  success := scmd.AcquireContext(readerName);
  if (success = False) then
    begin
      WriteLn(scmd.LastErrorText);
      Exit;
    end;

  //  If successful, the name of the currently inserted smart card is available:
  WriteLn('Card name: ' + scmd.CardName);

  //  Change the "user" PIN.  (Typically, you'll always be using the "user" PIN.)
  currentPin := '0000';
  newPin := '1234';
  retval := scmd.PinChange('user',currentPin,newPin);
  if (retval = -1) then
    begin
      WriteLn('The PIN is already blocked.');
      Exit;
    end;
  if (retval = -2) then
    begin
      WriteLn('The PinChange function failed for some unanticipated reason');
      WriteLn(scmd.LastErrorText);
      Exit;
    end;
  if (retval = 0) then
    begin
      WriteLn('PIN successfully changed.');
    end
  else
    begin
      WriteLn('Current PIN is incorrect.');
      WriteLn('Number of attempts remaining = ' + retval);
    end;

  scmd.DeleteContext();


  scmd.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.