Codefest CTF 2018 "Access Denied?" Challenge Source

source.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import random
import user_functions

user = raw_input("Enter your name: ")

if not user_functions.exists(user):
	# generate a code

	count_ = user_functions.generateID(user)%1000	#User ID/ UID in the table is always positive

	generator = "xorshift"
	random.seed(generator)
	count = 0;

	for ch in user:
		ra = random.randint(1, ord(ch))
		rb = (ord(ch) * random.randint(1, len(user))) ^ random.randint(1, ord(ch))

		count += (ra + rb)/2

	
	code = 1

	for i in range(1,count+count_):
		code = (code + random.randint(1, i) ) % 1000000

	final = random.randint(1,9) * 1000000 + code

	#store it in the database
	user_functions.store(user, final)

else:
	#if user already exists, fetch access code
	final = user_functions.get_code(user)

code = raw_input("Enter your access code: ").strip()


while True:
	
	if code.isdigit():
		if (int(code) == final):
			print "The flag is " + user_functions.get_flag(user)
			exit()
		else:
			print "Incorrect access code"
	else:
		print "The code must be an integer"

	code = (raw_input("\nPlease enter the code: "))

	print "\n###############################################"