pyconcrete

Protect your python script, encrypt .pyc to .pye and decrypt when import it

Protect python script work flow

your_script.py import pyconcrete
pyconcrete will hook import module
when your script do import MODULE, pyconcrete import hook will try to find MODULE.pye first and then decrypt MODULE.pye via _pyconcrete.pyd and execute decrypted data (as .pyc content)
encrypt & decrypt secret key record in _pyconcrete.pyd (like DLL or SO) the secret key would be hide in binary code, can't see it directly in HEX view

Encryption

only support AES 128 bit now
encrypt & decrypt by library OpenAES

Installation

need to input your passphrase create secret key for encrypt python script.
same passphrase will generate the same secret key
installation will add pyconcrete.pth into your site-packages for execute sitecustomize.py under pyconcrete which will automatic import pyconcrete

pip

You must set up environment variable PYCONCRETE_PASSPHRASE for installation continuously.

$ PYCONCRETE_PASSPHRASE=<your passphrase here> pip install pyconcrete

or, if you use an old pip version that supports --egg:

$ pip install pyconcrete --egg --install-option="--passphrase=<your passphrase>"

pyconcrete installed as egg, if you want to uninstall pyconcrete will need to manually delete pyconcrete.pth.

source

get the pyconcrete source code

$ git clone <pyconcrete repo> <pyconcre dir>

install pyconcrete

$ python setup.py install

Usage

Full encrypted

convert all of your .py to *.pye

$ pyconcrete-admin.py compile --source=<your py script>  --pye
$ pyconcrete-admin.py compile --source=<your py module dir> --pye

remove *.py *.pyc or copy *.pye to other folder
main.py encrypted as main.pye, it can't be executed by normal python. You must use pyconcrete to process the main.pye script. pyconcrete(exe) will be installed in your system path (ex: /usr/local/bin)

pyconcrete main.pye
src/*.pye  # your libs

Partial encrypted (pyconcrete as lib)

download pyconcrete source and install by setup.py

$ python setup.py install \
  --install-lib=<your project path> \
  --install-scripts=<where you want to execute pyconcrete-admin.py and pyconcrete(exe)>

import pyconcrete in your main script
- recommendation project layout

main.py       # import pyconcrete and your lib
pyconcrete/*  # put pyconcrete lib in project root, keep it as original files
src/*.pye     # your libs

Test

test in local

$ ./pyconcrete-admin.py test

test in docker environment

$ ./bin/run-test.sh

add test case for pyconcrete.exe
- reference exists test case
- add folder in test/exe_testcases/
- add testing code at test/exe_testcases/src/main.py
- add validator at test/exe_testcases/validator.py

Example

Django with pyconcrete

Building on Linux

Python 3.7 - fix Ubuntu 14.04 build error

x86_64-linux-gnu-gcc: error: unrecognized command line option `-fstack-protector-strong`

Reference by Stackoverflow solution

you should install gcc-4.9 first
symlink /usr/bin/x86_64-linux-gnu-gcc to gcc-4.9
build pycocnrete again
rollback symlink

Building on Windows

Python 2.7 - Visual Studio 2008

https://www.microsoft.com/en-us/download/details.aspx?id=44266

Open VS2008 Command Prompt
set DISTUTILS_USE_SDK=1
set SET MSSdk=1
create distutils.cfg and put inside
```
[build]
compiler=msvc
```

Python 3.5, 3.6, 3.7 - Visual Studio 2015

MSVC 2015 Build Tools

Document

make sure setuptools >= 24.0

python -c 'import setuptools; print(setuptools.__version__)'

Open VS2015 Build Tools Command Prompt
set DISTUTILS_USE_SDK=1
setenv /x64 /release or setenv /x86 /release

Reference

https://matthew-brett.github.io/pydagogue/python_msvc.html https://github.com/cython/cython/wiki/CythonExtensionsOnWindows

Announcement

pyconcrete is an experimental project, there is always a way to decrypt .pye files, but pyconcrete just make it harder.

Falldog/pyconcrete