Dart

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

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Demonstrates how to change the PIN for a smart card or USB token. Dart

import 'package:chilkat/chilkat.dart';

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

  final scmd = CkScMinidriver();

  // Reader names (smart card readers or USB tokens) can be discovered
  // via List Readers or Find Smart Cards
  final readerName = 'Alcor Micro USB Smart Card Reader 0';
  try {
    scmd.acquireContext(readerName);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // If successful, the name of the currently inserted smart card is available:
  print('Card name: ${scmd.cardName}');

  // Change the "user" PIN.  (Typically, you'll always be using the "user" PIN.)
  final currentPin = '0000';
  final newPin = '1234';
  final retval = scmd.pinChange('user', currentPin, newPin);
  if (retval == -1) {
    print('The PIN is already blocked.');
    return;
  }

  if (retval == -2) {
    print('The PinChange function failed for some unanticipated reason');
    print(scmd.lastErrorText);
    return;
  }

  if (retval == 0) {
    print('PIN successfully changed.');
  } else {
    print('Current PIN is incorrect.');
    print('Number of attempts remaining = $retval');
  }

  scmd.deleteContext();
}