Generate AIDA64 key

aida64keygen.py

"""
Generate AIDA64 key.

AIDA64 download link, edition and version can be changed:
https://download.aida64.com/aida64business750.zip
"""

import random
from datetime import datetime, timezone
from enum import Enum

_ENCODE_DICT = bytes(b"DY14UF3RHWCXLQB6IKJT9N5AGS2PM8VZ7E")


class KeyEdition(Enum):
    BUSINESS = 1
    EXTREME = 2
    ENGINEER = 3
    NETWORK_AUDIT = 4


def generate_key(
    edition: KeyEdition,
    purchase_date=datetime.now(timezone.utc),
    seats=1,
    license_expiry=0,  # 0 days = nerver expire
    maintenance_expiry=3652,  # 3652 days = 10 years
) -> str:
    purchase_date = max(
        datetime(2004, 1, 1, tzinfo=timezone.utc),
        min(purchase_date, datetime(2099, 1, 1, tzinfo=timezone.utc)),
    )
    seats = max(1, min(seats, 797))
    maintenance_expiry = max(1, min(maintenance_expiry, 3652))
    unk1 = random.randint(100, 989)
    unk2 = random.randint(0, 100)
    unk3 = random.randint(0, 100)

    purchase_date_data = (
        (purchase_date.year - 2003) * 512 + purchase_date.month * 32 + purchase_date.day
    )

    key = bytearray(25)
    base = random.randint(0, 2 * len(_ENCODE_DICT))
    key[0:2] = _encode_data(base ^ edition.value ^ 0xBF, 2)
    key[2:4] = _encode_data(base ^ unk1 ^ 0xED, 2)
    key[4:6] = _encode_data(base ^ unk2 ^ 0x77, 2)
    key[6:8] = _encode_data(base ^ unk3 ^ 0xDF, 2)
    key[8:12] = _encode_data(base ^ seats ^ 0x4755, 4)
    key[12:16] = _encode_data(base ^ purchase_date_data ^ 0x7CC1, 4)
    key[16:19] = _encode_data(base ^ license_expiry ^ 0x3FD, 3)
    key[19:22] = _encode_data(base ^ maintenance_expiry ^ 0x935, 3)
    key[22:24] = _encode_data(base, 2)
    key[24] = _encode_data(_get_checksum(key[0:24]), 3)[1]

    key_characters = [chr(k) for k in key]
    for i in range(20, 4, -5):
        key_characters.insert(i, "-")
    return "".join(key_characters)


def _encode_data(data: int, byte_count: int) -> bytearray:
    return bytearray(
        _ENCODE_DICT[(data // (len(_ENCODE_DICT) ** i)) % len(_ENCODE_DICT)]
        for i in reversed(range(byte_count))
    )


def _get_checksum(key_slice: bytes) -> int:
    checksum = 0
    for byte in key_slice:
        checksum ^= byte << 8
        for _ in range(8):
            checksum = (checksum << 1) ^ (0x8201 if checksum & 0x8000 else 0)
    return (checksum & 0xFFFF) % 0x9987


if __name__ == "__main__":
    key = generate_key(KeyEdition.BUSINESS)
    print(key)