truepy 2.0

A Python library to create TrueLicense license files.

TrueLicense compatible license manager for Python

This package supports managing licenses one the format used by the Java package TrueLicense. Only the version 1 format is supported.

Please see the TrueLicense home page for an exhaustive reference of the license format, or Quick license format description below.

Quick license format description

A license has a validity window in time, an issuer, a holder and various meta data.

It is signed by the holder, and the signature can be verified using the issuer certificate.

The license file is also encrypted with a key derived from a password.

Quick library reference

The main class exported by truepy is truepy.License.

• To generate a new license, use the class method truepy.License.issue.

• To load a license from a file or stream, use the class method truepy.License.load.

• To save a license to a file or stream, use the method truepy.License.store.

• To verify the siganture of a license, use the method truepy.License.verify.

• To read license information, use the truepy.License.license_data attribute; this is of the type truepy.LicenseData.

Loading and storing licenses requires only the license password; these operations do not perform signing and signature verification.

Issuing a new license requires the private key of the issuer certificate.

Verifying a license signature requires the issuer certificate.

Quick application reference

Please run the application with python -m truepy -h for more information.

Release Notes

2.0 - No dependency on OpenSSL

• Changed certificate and signature verification routines to use cryptography instead of pyOpenSSL.

  This changes all methods that take a certificate or a key as parameter.

1.0.1 - License Data Bugfix

• Changed truepy.LicenseData.information to info to be compatible with TrueLicense.

1.0 - Initial Release

• Support for basic license operations for TrueLicense version 1 licenses