addTmrAccess method

String addTmrAccess(SealdTmrRecipientWithRights recipient)

Add a TMR access to this session for the given authentication factor.

recipients - A TMR recipient with its associated rights. Returns the ID of the created TMR access.

Implementation

String addTmrAccess(SealdTmrRecipientWithRights recipient) {
  // Dart FFI forces us to copy the data from Uint8List to a newly allocated Pointer<Uint8>
  final Pointer<Uint8> nativeOverEncryptionKey =
      calloc<Uint8>(recipient.overEncryptionKey.length);
  final pointerListOverEncryptionKey =
      nativeOverEncryptionKey.asTypedList(recipient.overEncryptionKey.length);
  pointerListOverEncryptionKey.setAll(0, recipient.overEncryptionKey);

  final Pointer<Pointer<Utf8>> result = calloc<Pointer<Utf8>>();
  final Pointer<Pointer<NativeSealdError>> err =
      calloc<Pointer<NativeSealdError>>();

  final Pointer<Utf8> nativeRecipientType = recipient.type.toNativeUtf8();
  final Pointer<Utf8> nativeRecipientValue = recipient.value.toNativeUtf8();

  final SealdRecipientRights currentRights =
      recipient.rights ?? SealdRecipientRights();
  final int resultCode = _bindings.SealdEncryptionSession_AddTmrAccess(
      _ptr.pointer(),
      nativeRecipientType,
      nativeRecipientValue,
      nativeOverEncryptionKey,
      recipient.overEncryptionKey.length,
      currentRights.read ? 1 : 0,
      currentRights.forward ? 1 : 0,
      currentRights.revoke ? 1 : 0,
      result,
      err);

  calloc.free(nativeRecipientType);
  calloc.free(nativeRecipientValue);
  calloc.free(nativeOverEncryptionKey);
  if (resultCode != 0) {
    calloc.free(result);
    throw SealdException._fromCPtr(err);
  } else {
    final String accessId = result.value.toDartString();
    calloc.free(result.value);
    calloc.free(result);
    calloc.free(err);
    return accessId;
  }
}