PasskeyBinding.fromJson constructor

PasskeyBinding.fromJson(Map<String, Object?> json, { bool allowLocalhost = false, })

Implementation

factory PasskeyBinding.fromJson(
  Map<String, Object?> json, {
  bool allowLocalhost = false,
}) {
  final keys = {
    'version',
    if (json['version'] == 3) ...['route', 'verification', 'transports'],
    'prf',
    'domain',
    'credentialId',
    'userId',
    'publicKeyCose',
    'input',
    'backupEligible',
    'backupState',
    'signCount',
  };
  if (json.length != keys.length ||
      !keys.every(json.containsKey) ||
      json['version'] is! int ||
      ![2, 3].contains(json['version']) ||
      (json['version'] == 3 &&
          (json['route'] != 'hardware' ||
              json['verification'] != 'required' ||
              json['transports'] is! List ||
              (json['transports'] as List).any((v) => v is! String))) ||
      json['backupEligible'] is! bool ||
      json['backupState'] is! bool ||
      json['signCount'] is! int ||
      json['prf'] != 'webauthn-prf-v1' ||
      json['domain'] is! String) {
    throw const PasskeyException(PasskeyErrorCode.invalidBinding);
  }
  return PasskeyBinding(
    allowLocalhost: allowLocalhost,
    route: json['version'] == 3 ? PasskeyRoute.hardware : PasskeyRoute.system,
    transports: json['version'] == 3
        ? (json['transports'] as List).cast<String>()
        : const [],
    domain: json['domain']! as String,
    credentialId: _decode(json['credentialId'], 1024),
    userId: _decode(json['userId'], 64),
    publicKeyCose: _decode(json['publicKeyCose'], 4096),
    input: _decode(json['input'], 1024),
    authenticatorState: AuthenticatorState(
      backupEligible: json['backupEligible']! as bool,
      backupState: json['backupState']! as bool,
      signCount: json['signCount']! as int,
    ),
  );
}