{}
#!/usr/bin/env python3
"""
GuardPinTime (Java → Python) — fixed time constants
Edit the constants below to compute the code for any date/time.
"""
from datetime import datetime
import hashlib
# =========================================================
# >>>>> EDIT THESE CONSTANTS <<<<<
YEAR = 2025
MONTH = 11 # 1–12 (Java uses month+1, Python already stores it as 1..12)
DAY = 2 # 1–31
HOUR = 10 # 0–23
MINUTE = 30 # 0–59
MASTER_KEY = "timurator"
# =========================================================
def _signed_byte(b: int) -> int:
"""Convert 0..255 → Java signed byte (-128..127)"""
return b - 256 if b > 127 else b
def _java_abs_digit(b: int) -> str:
"""Emulates String.valueOf(Math.abs(byte)).charAt(0)"""
sb = _signed_byte(b)
x = abs(sb)
return str(x)[0] # take first digit of decimal string
def encrypt_time():
# Order and fields follow the decompiled Java exactly:
md = hashlib.sha256()
md.update(str(MONTH).encode("utf-8")) # (month + 1) in Java, month is already 1..12 here
md.update(str(YEAR).encode("utf-8"))
md.update(str(MINUTE).encode("utf-8"))
# Append decimal values of master key bytes (Java: builder.append(byteValue))
key_bytes = MASTER_KEY.encode("utf-8")
decimal_concat = "".join(str(b if b < 128 else b - 256) for b in key_bytes)
md.update(decimal_concat.encode("utf-8"))
digest = md.digest()
# Build 4 characters according to exact Java logic
ch0 = _java_abs_digit(digest[0])
ch1 = _java_abs_digit(digest[DAY % len(digest)]) # day index
ch2 = _java_abs_digit(digest[HOUR % len(digest)]) # hour index
ch3 = _java_abs_digit(digest[-1]) # last byte
return f"{ch0}{ch1}{ch2}{ch3}"
if __name__ == "__main__":
code = encrypt_time()
print("Generated code:", code)