livingstonetech

#!/usr/bin/env python3
"""
Gist to calculate Time-based One Time Password (TOTP).
This function is designed to be used in two modes:
    - Current Mode
        No timestamp supplied, and the current timestamp is considered.
        This mode gives the totp at the present moment in time.
    - Historic Mode
        Here an explicit timestamp is supplied. This is to calculate a TOTP
        that had occured at a moment in history.