defrex

from __future__ import unicode_literals, print_function

import re
import colorama


header_regex = re.compile('^HTTP_')

def print_header(key, value):

whatisaphone

import hashlib


class FeistelSHA1:
    rounds = 4  # 4 rounds is sufficient as long as the round function is cryptographically secure
    split = 1 / 2

    def __init__(self, key, rounds=rounds):
        self.subkeys = [hashlib.sha1(bytes((i,)) + key).digest() for i in range(rounds)]