keys_list = ['630731459228', '021812365430', '241780340594', '171247046833', '235740410948', '247480137613',
             '001754439284', '460723819352', '632308295147', '384174723610', '597410324048', '246084171733']


ch = ['0', '1', '2', '3', '4', '5', '6', '7', '8',
          '9', 'a', 'b', 'c', 'd', 'e', 'f']


# 转换为二进制列表
def convert(tip):
    tip1 = ''
    for each in tip:
        index = ch.index(each)
        ea = bin(int(index)).replace("0b", '').zfill(4)
        tip1 = tip1 + ea
    tip_list = list(map(int,tip1))
    return tip_list


#  转十六进制
def convert1(x):
    y = 0
    k = 0
    while True:
        k += 1
        i = x % 10
        if i == 1:
            y = y + 2 ** (k - 1)
        x = x // 10
        if x == 0:
            break
    z = ''
    while True:
        k = y % 16
        z = ch[k] + z
        y = y // 16
        if y == 0:
            break
    return z


# 加密
def encrypt(tips):
    tip = tips[4:]
    tip_list = convert(tip)
    nu = len(tip_list)
    # 调换一次顺序
    for i in range(nu):
        tip_list[i], tip_list[nu-1-i] = tip_list[nu-1-i], tip_list[i]
    keys = int(tips[0:4])
    key = keys_list[keys]
    key_list = convert(key)
    secre = []
    secret = []
    for i in range(nu):
        secre.append(tip_list[i] ^ key_list[i])
    for i in range(nu//4):
        re = secre[4*i:i*4+4]
        res = ''.join([str(i) for i in re])
        secret.append(convert1(int(res)))
    return tips[0:4]+"".join(secret)


# 解密
def decrypt(cipher):
    tip = cipher[4:]
    tip_list = convert(tip)
    nu = len(tip_list)
    keys = int(tips[0:4])
    key = keys_list[keys]
    key_list = convert(key)
    secre = []
    secret = []
    for i in range(nu):
        secre.append(tip_list[i] ^ key_list[i])
    # 调换一次顺序
    for i in range(nu):
        secre[i], secre[nu-1-i] = secre[nu-1-i], secre[i]
    for i in range(nu // 4):
        re = secre[4*i:i*4+4]
        res = ''.join([str(i) for i in re])
        secret.append(convert1(int(res)))
    return cipher[0:4] + "".join(secret)

if __name__ == '__main__':
    tips = "000320180975f0ac"

    encrypt = encrypt(tips)
    decrypt = decrypt(encrypt)
    print("加密:", encrypt)
    print("解密:", decrypt)