fetchRootKey method

@override Future<BinaryBlob> fetchRootKey()

By default, the agent is configured to talk to the main Internet Computer, and verifies responses using a hard-coded public key.

This function will instruct the agent to ask the endpoint for its public key, and use that instead. This is required when talking to a local test instance, for example.

Only use this when you are not talking to the main Internet Computer, otherwise you are prone to man-in-the-middle attacks! Do not call this function by default.

Implementation

@override
Future<BinaryBlob> fetchRootKey() async {
  if (_rootKeyFetched == false) {
    var key =
        (((await status())["root_key"]) as Uint8Buffer).buffer.asUint8List();
    // Hex-encoded version of the replica root key
    rootKey = blobFromUint8Array(key);
    _rootKeyFetched = true;
  }
  return Future.value(rootKey!);
}