TOTPAuthProject.txt

import hmac
import time
import hashlib
import pyotp

# Create a TOTP instance using a shared secret key
totp = pyotp.TOTP('mysecretkey')

# Get the user's username and password
username = input('Enter your username: ')
password = input('Enter your password: ')

# Generate a random challenge string
challenge = 'randomstring'

# Send the challenge to the user's device
send_challenge_to_device(username, challenge)

# Wait for the response from the user's device
response = receive_response_from_device(username)

# Combine the challenge with the TOTP code to create a response string
response_string = challenge + totp.now()
    
# Authenticate the user
if hmac.compare_digest(response_string, response):
    print('Authentication successful')
else:
    print('Authentication failed')




In this example, we're using the pyotp library to generate TOTP codes based on a shared secret key. The send_challenge_to_device and receive_response_from_device functions are placeholders for the actual code that sends and receives data to and from the user's device. The hmac.compare_digest function is used to securely compare the response string with the response received from the user's device.