amazingfate

import sys
from struct import pack as pk, unpack as up

def u32(x):
    return x & 0xFFFFFFFF

def tea_update_custom_mac(mac, v, k):
    v0, v1 = v[0], v[1]
    cur_sum = 0xC6EF3720
    k0, k1, k2, k3 = k[0], k[1], k[2], k[3]