readExternalWallet static method

List<AddressObject>? readExternalWallet(Uint8List? fileBytes, { bool isIngoreVerification = false, })

Reads an external wallet from a byte array and returns a list of AddressObject.

Parameters:

• fileBytes: The byte array representing the external wallet file.
• isIngoreVerification: ignore the verification of addresses with a signature in order to quickly import large addresses or addresses locked in a file

Returns: A list of AddressObject parsed from the byte array, or null if the fileBytes is null or empty.

Implementation

static List<AddressObject>? readExternalWallet(Uint8List? fileBytes,
    {bool isIngoreVerification = false}) {
  final List<AddressObject> addresses = [];
  if (fileBytes == null || fileBytes.isEmpty) {
    return null;
  }

  try {
    int cursor = 0;

    while (cursor + 625 <= fileBytes.length) {
      Uint8List current = fileBytes.sublist(cursor, cursor + 625);
      cursor += 626;

      var hash = String.fromCharCodes(current.sublist(1, current[0] + 1));
      var custom =
          String.fromCharCodes(current.sublist(42, 42 + current[41]));

      AddressObject addressObject = AddressObject(
          hash: hash,
          custom: custom.isEmpty ? null : custom,
          publicKey:
              String.fromCharCodes(current.sublist(83, 83 + current[82])),
          privateKey:
              String.fromCharCodes(current.sublist(339, 339 + current[338])));

      var keyPair = KeyPair(
          publicKey: addressObject.publicKey,
          privateKey: addressObject.privateKey);

      if (keyPair.isValid()) {
        if (isIngoreVerification) {
          addresses.add(addressObject);
        } else {
          bool verification = NosoSigner().verifyKeysPair(keyPair);
          if (verification) {
            addresses.add(addressObject);
          }
        }
      }
    }
    return addresses.isEmpty ? null : addresses;
  } catch (e) {
    print("Error readExternalWallet: $e");
    return null;
  }
}