pyshielder 1.0.4

A robust tool for Python code obfuscation and encryption using Cython.

pyshielder - Python Code Shield

pyshielder is a powerful tool to protect your Python code. It combines advanced multi-layer bytecode obfuscation with native compilation to create highly secure executable scripts.

Features

• Advanced Layering: Compiles code to bytecode, serializes with Marshal, compresses with Zlib, encodes with Base64, and obfuscates the structure.
• Strong Encryption: Wraps the obfuscated payload in a secure loader encrypted with rolling-key XOR.
• Native Compilation: The final loader is compiled into a native C binary using Cython and GCC, executing directly in memory.
• Tamper Resistant: No original source code or simple bytecode is visible. Reverse engineering requires reconstructing multiple layers of obscured logic.
• Self-contained: The output is a single Python script that self-compiles and executes.

Installation

pip install pyshielder

Note: You need gcc (or clang) and python3-dev installed on your system to use the encryption tool and to run the generated protected scripts.

Usage

Command Line Interface

You can use pyshielder directly from the command line:

# Encrypt a file
pyshielder my_script.py

# Specify output directory
pyshielder my_script.py protected_script.py

Python API

from pyshielder import encrypt

# Encrypt a script string
code = "print('Hello, protected world!')"
loader_code = encrypt(code)

# Save the loader to a file
with open("protected_script.py", "w") as f:
    f.write(loader_code)

License

MIT License - see LICENSE for details.