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Python tools for licensing

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Some handy tools for the Keygen licensing service. (This is a user contribution, not an official Keygen LLC product. For Keygen software, see here.)

Install with

pip install kgt

and use as

import sys
from kgt import get_online_license_info, ValidationError

info = get_online_license_info(
    account_id="demo", key="DEMO-DAD877-FCBF82-B83D5A-03E644-V3"

The out object contains useful information such as


The validation result can also be safely cached with

import sys
from datetime import datetime, timedelta
from kgt import get_cached_license_info, ValidationError

infi = get_cached_license_info(
    account_id="your accound id",
    key="the license key",
    keygen_verify_key="your Ed25519 128-bit Verify Key",

now = datetime.utcnow()
cache_age = now - out.timestamp
if cache_age > timedelta(days=3) and cache_age < timedelta(days=7):
    print("Warning: Could not validate license. Make sure to get online soon.")
elif cache_age > timedelta(days=7):
    print("Error: Could not validate license. Internet connection needed. Exiting.")

For offline validation, use

from kgt import get_offline_license_info

# or "RSA_2048_PKCS1_SIGN_V2", "RSA_2048_PKCS1_PSS_SIGN_V2":
license_scheme = "ED25519_SIGN"
keygen_verify_key = "your public verify key"
license_key = "your offline license key"

info = get_offline_license_info(license_scheme, license_key, keygen_verify_key)

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