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def validate_registration_code(self, registration_code, max_age=3600): # max_age in seconds, default 1 hour try: registration_code_bytes = base64.b64decode(registration_code) except Exception as e: return False, "Invalid registration code format"

class RegistrationCodeGenerator: def __init__(self, secret_key): self.secret_key = secret_key.encode('utf-8') timetophoto registration code hot

# Combine timestamp and unique ID combined_string = timestamp + unique_id max_age=3600): # max_age in seconds

# Create an HMAC object using the secret key and combined string registration_code = hmac.new(self.secret_key, combined_string.encode('utf-8'), hashlib.sha256).digest() timetophoto registration code hot

import uuid import hashlib import hmac import time import base64