oath_external_totp
==================

This Python package is free software licensed under the GNU General Public
License version 3 or later (GPL-3.0-or-later). See the file COPYING for the
full license text.

Derived work
------------

The time synchronization logic in this package was derived from modifications
to GNU OATH Toolkit 2.6.13 (oathtool), specifically:

  - oathtool/google_time.c
  - oathtool/ntp_time.c
  - oathtool/oathtool.c (get_external_totp_time integration)

Original project
----------------

  GNU OATH Toolkit 2.6.13
  Copyright (C) 2009-2025 Simon Josefsson
  https://www.nongnu.org/oath-toolkit/
  Licensed under GPL-3.0-or-later

Time sync modifications (C)
---------------------------

  Copyright (C) 2025 Lucas Moreira
  Licensed under GPL-3.0-or-later

Python port
-----------

  Copyright (C) 2025 Lucas Moreira
  Licensed under GPL-3.0-or-later
  Ported from the C modules listed above into pure Python (time_sync.py).

Third-party dependencies
------------------------

  pyotp - MIT License
  https://github.com/pyotp/pyotp
