crossoverCode

import random
import math


def swap(source: list, index1: int, index2: int):
    source[index1], source[index2] = source[index2], source[index1]
    return source


def shuffle(source: list, key: any):
    random.seed(key)
    for index1 in range(len(source)):
        index2 = int(math.floor(random.random() * len(source)))
        swap(source, index1, index2)
    return source


def crossoverCode(source: str, key: any):
    chars = []
    chars.extend(source)
    shuffle(chars, key)
    return ''.join(chars)


def main():
    print("Введите шифруемое сообщение:")
    source: str = input()
    print("Введите ключ:")
    key: str = input()
    print("Зашифрованное сообщение:", crossoverCode(source, key))
    return True


main()