current_time = <current HHMM> pin = (current_time ^ 0xCA7) % 1000000 Enter as 6-digit with leading zeros. Example at 12:34:
So the check is:
pin ^ time = 0xCA7 (within low 16 bits) => pin = time ^ 0xCA7 But pin must be 6 digits (100000 to 999999) and digits sum to 24. Suppose current time = 14:45 → timeInt = 1445 .
We solve for integer X = int(pin):