Pyarmor is a command line tool used to obfuscate python scripts, bind obfuscated scripts to fixed machine or expire obfuscated scripts.

• The obfuscated scritpt is still a normal .py script, in most of cases the original python scripts can be replaced with obfuscated scripts seamlessly.
• Provide many ways to obfuscate the scripts to balance security and performance
• Rename functions/methods/classes/variables/arguments, irreversible obfuscation
• Convert part of Python functions to C functions, compile them to machine instructions by high optimize option, irreversible obfuscation
• Bind obfuscated scripts to fixed machine or expire obfuscted scripts
• Protect obfuscated scripts by Themida (Only for Windows)

• Python 2 and Python 3¹
• Windows
• Many linuxs, include embedded systems, Raspberry Pi etc.
• Apple Intel and Apple Silicon
• Support arches: x86_64, aarch64, armv7 etc.²

Install

pip install pyarmor

Obfuscate the script foo.py

pyarmor gen foo.py

This command generates an obfuscated script dist/foo.py like this:

    from pyarmor_runtime import __pyarmor__
    __pyarmor__(__name__, __file__, b'\x28\x83\x20\x58....')

Run it

python dist/foo.py

Also look at the getting started

Pyarmor is published as shareware, free trial version never expires, but there are some limitations.

Pyarmor licenses introduces license type, features and limitations for each license type and how to purchase Pyarmor license.

Also read EULA of Pyarmor

Having trouble?

Read this Pyarmor 8.0 Documentation at first.

Try the FAQ – it's got answers to many common questions.

Looking for specific information? Try the documentation index, or the detailed table of contents.

Not found anything? See asking questions in github.

Report bugs according to the issue template.

Send email to [email protected] for business and security issue.

• Website
• Documentation 8.0
• Documentation 7.x

中文资源

• Pyarmor 网站
• Pyarmor 8.0 在线文档
• Pyarmor 7.x 在线文档)

There are significant changes in Pyarmor 8.0. Pyarmor 8.0 has been rewritten, and new features are implemented by new commands: gen, reg, cfg. And they only works for Python 3.7+.

At first release, only x86_64 for windows, linux, macosx works (2023-03-08), and aarch64 for linux and macosx works soon (before 2023-04-01), armv7 and x86 will work about 2023-06-01. For all the other arches only on demand.

For compatibility the old commands like obfuscate etc. are still available, but they're not belong to Pyarmor 8.0

Users prior to 8.0 should read this Import Notes to make judge whether upgrade Pyarmor

Each major version has one file to log changes, it describes the fixed issues, new features, incompatible issues in different versions

It's important to read this carefully before upgrading pyarmor.

• Pyarmor 8.x Change Logs

In future only bug fix for old modes, no new features for old modes.

Most of the old commands could be used normally, but there still have some changes.

There are 3 cases for old users after Pyarmor 8.0 is released:

• Never upgrade to 8.0+

  • SPP mode doesn't work

    In order to use SPP mode, it's necessary to upgrade Pyarmor to 8.0+

  • Command pyarmor register without any argument return 404 error

    It is used to query registration information in old Pyarmor, but now license server doesn't serve this web api.

    Instead use pyarmor -v to make sure it's not trial version.

  • Registering Pyarmor by pyarmor register pyarmor-regcode-xxxxxx.txt can be used no more than 10 times

    If using Pyarmor in CI server or docker, regsiter Pyarmor by the second method described in the registration file "pyarmor-regcode-xxxxxx.txt"

• Upgrade to 8.0 but only use old features

  • Command pyarmor -v only checks and prints new Pyarmor License
  • Command pyarmor -h only prints help for new cli

  There are 2 solutions to make command pyarmor same as before:

  • Export environment variable PYARMOR_CLI=7
  • Recreate command pyarmor link to python -m pyarmor.pyarmor

• Upgrade to 8.0 and use new features

  • Follow new EULA of Pyarmor. Especially for old personal license and it's used in many products, new license only allows one proudct.

  • Not all old licenses could be upgraded to new license freely, refer to Pyarmor licenses

  • The old features need not internect connection, but new features need

  • The old features support Python 2.7~3.10, but new features only support Python 3.7+